Iveco Error Tree User Manual

Failure tree

IVECO

1328 754 105

Subject to technical changes

Copyright by ZF

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Printed in Germany

ZF Friedrichshafen AG

Competence Contents LKS-T / Editing MC-C

Edition: 2004-02
SW31_13e

1328 754 105

Abbreviations - Contents

Abbreviation Meaning

ABS Anti-locking system
ADVP Digital output power supply (+)
alpha_fp Accelerator pedal position (value in %)
AL Insufficient air (air deficiency)
ASR Anti-slip control
aux_stat_zbr CAN message
BN Vehicle power supply
Buka Terminal tester
CAN Controller Area Network (CAN)
ECU Electronic control unit (Transmission control)
EDC Electronic-diesel-control (EDC) (engine electronics)

Eol_Parameter End of line (entry of vehicle parameter e.g. rear axle ratio)
ERC1_DR CAN message

EST Electronic control (e.g. Intarder control EST 48)
FFR Vehicle controller
Fzg Vehicle
GA Gate
GB Transmission brake
GV Splitter group
GVL Splitter group, low
GVS Splitter group, high
GP Range change group (planetary group)
GPL Range change group, low
GPS Range change group, high
GS Transmission actuator
HG Main transmission
i_HA Rear axle ratio
i.O OK
Ink Incremental (step)
Kitas
K1 Constant 1
K2 Constant 2
KM Short circuit to earth/ground
KP Short circuit to positive
KS Clutch actuator
m_dd_edc Calculated EDC injection rate (driver's request)
m_mbr Current engine brake torque
m_mot_akt Current injection quantity for EDC engine
m_sekret Secondary retarder brake torque from CAN message ERC1 taken from

n_mot Engine speed (rpm)
n_sek Transmission output shaft speed
OEM Original equipment manufacturer
PTO Power-take-off
TC1_FT CAN message
UFB Faultfinding, rectification
v_cc_set Cruise control set requested speed
Valeo Clutch manufacturer
VM Supply ground
WSI Wheel speed information (CAN message)
z_Fbr Foot brake signal
z_kd Kickdown signal
z_low_idle Idling switch signal
z_ret_rück Intarder down-shifting request

Active output speed sensor for speedo

Intarder (Driveline Retarder)

ZF Friedrichshafen AG
LKS-T

ZF-ASTRONIC_1328_754_105

Error number

ZF IVECO

2

2 - A

3

2 - A

4

2 - A

5

2 - A

6

2 - A

7

2 - A

8

2 - A

9

2 - A

10

2 - A

11

B

12

C

E

13

E

14
17

11

18

12

19

13

20

14

21

15

22

16

25

19

26

1A

27

1B

28

1C

29

1D

30

1E

31

1F

32

20

33

21

34

22 - 2A

35

22 - 2A

36

22 - 2A

37

22 - 2A

38

22 - 2A

39

22 - 2A

40

22 - 2A

41

22 - 2A

42

22 - 2A

43

2B

44

2C

45

2D

46

2E

49

31

50

32

51

33

52

34

53

35

54

36

59

3B

60

3C

61

3D

62

3E

63

3F

ZF Friedrichshafen AG
LKS-T 2004-01

ZF-ASTRONIC_1328_754_105

Error number

ZF IVECO

64

40
65
66

42 - 4A
67

42 - 4A
68

42 - 4A
69

42 - 4A
70

42 - 4A
71

42 - 4A
72

42 - 4A
73

42 - 4A
74

42 - 4A
75

4B
76

4C
77

4D
78

4E
81

51
82

52
83

53
84

54
85

55
86

56
89

59
90

59
91

5B
92

5C
93

5D
94

5E
95

5F
96

60
97

61
98

62
99

63

100

64

101

65

102

66

103

67

104

68

105

69

107

6B

108

6C

110

6E

113

71

114

72

75

117

118

76

119

77

120

78

121

79

122

7A

123

7B

124

7C

126

7E

ZF Friedrichshafen AG
LKS-T 2004-01

ZF-ASTRONIC_1328_754_105

Error number

ZF IVECO

127

7F

128

80

129

81

130

82

131

83

132

84

133

85

134

86

135

87

136

88

137

89

138

8A

139

8B

140

8C

141

8D

142

8E

143

8F

144

90

145

91

146

92

147

93

148

94

149

95

150

96

151

97

152

98

153

99

154

9A

155

9B

156

9C

157

9D

158

9E

159

9F

160

A0

163

A3

164

A4

165

A5

166

A6

168

A8

169

A9

170

AA

171

AB

174

AE

175

AF

177

B1

178

B2

179

B3

180

B4

181

B5

182

B6

183

B7

184

B8

ZF Friedrichshafen AG
LKS-T 2004-01

ZF-ASTRONIC_1328_754_105

Error number

ZF IVECO

188

BC

190

BE

191

BF

192

C0

193

C1

194

C2

197

C5

199

C7

226

E2

227

E3

ZF Friedrichshafen AG
LKS-T 2004-01

ZF-ASTRONIC_1328_754_105

Error number

IVECO ZF
11
12
13
14
15
16
19
20
21
31
32
33
34
35
36
40
51
52
53
54
55
56
59
59
60
61
62
63
64
65
66
67
68
69
71
72

75

76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92

17
18
19
20
21
22
25
32
33
49
50
51
52
53
54
64
81
82
83
84
85
86
89
90
96
97
98

99
100
101
102
103
104
105
113
114

117
118
119
120
121
128
129
130
131
132
133
134
135
136
137
144
145
146

ZF Friedrichshafen AG
LKS-T 2004-01

ZF-ASTRONIC_1328_754_105

Error number

IVECO ZF
93
94
95
96
97
98
99
AA
1A
1B
1C
1D
1E
1F
2 - A
2 - A
2 - A
2 - A
2 - A
2 - A
2 - A
2 - A
2 - A
22 - 2A
22 - 2A
22 - 2A
22 - 2A
22 - 2A
22 - 2A
22 - 2A
22 - 2A
22 - 2A
2B
2C
2D
2E
3B
3C
3D
3E
3F
42 - 4A
42 - 4A
42 - 4A
42 - 4A
42 - 4A
42 - 4A
42 - 4A
42 - 4A
42 - 4A
4B
4C
4D
4E

147
148
149
150
151
152
153
170

26
27
28
29
30
31

2
3
4
5
6
7
8

9
10
34
35
36
37
38
39
40
41
42
43
44
45
46
59
60
61
62
63
66
67
68
69
70
71
72
73
74
75
76
77
78

ZF Friedrichshafen AG
LKS-T 2004-01

ZF-ASTRONIC_1328_754_105

Error number

IVECO ZF
5B
5C
5D
5E
5F
6B
6C
6E
7A
7B
7C
7E
7F
8A
8B
8C
8D
8E
8F
9A
9B
9C
9D
9E
9F
A0
A3
A4
A5
A6
A8
A9
AB
AE
AF
B
B1
B2
B3
B4
B5
B6
B7
B8
BC
BE
BF
C
C0
C1
C2
C5
C7

E

91
92
93
94

95
107
108
110
122
123
124
126
127
138
139
140
141
142
143
154
155
156
157
158
159
160
163
164
165
166
168
169
171
174
175

11
177
178
179
180
181
182
183
184
188
190
191

12
192
193
194
197
199

13

ZF Friedrichshafen AG
LKS-T 2004-01

ZF-ASTRONIC_1328_754_105

Error number

IVECO ZF

E

E2
E3

14
226
227

ZF Friedrichshafen AG
LKS-T 2004-01

ZF-ASTRONIC_1328_754_105

Iveco error number: 2 – A, 22 – 2A, 42 – 4A

Error display: In vehicle display: Error 2 – A

Error 22 – 2A
Error 42 – 4A

MobiDig/ Testman: Error 02 – 10 Error 34 – 42 Error 66 – 74

Error description: Error 02 – 10: Short circuit to ground at output to valve Y2 – Y10.

Error 34 - 42: Interruption at output to valve Y2 – Y10.

Error 66 -74: Short circuit to plus (+) at output to valve Y2 – Y10

Error detection: By ECU hardware, if output is activated.

System response: The automatic shift unit is deactivated. If the error occurs during shifting,

the selected gear remains engaged, depending on the driving condition, or
the ECU tries to shift to an equivalent gear. If both options are not possible,
the main transmission (HG) shifts into neutral. Engagement of selected

substitute gears during standstill and driving is possible.
Short-circuited shift valve outputs are deactivated.
Error present during ignition on, engine start impossible.
Follow-up error possible, ZF error number: 155 (9B), 152 (98) , 150 (96)

148 (94), 144 (90), 136 (88). If 2 errors do occur, then, the system is not

available!

Error rectification:

Completely replace

transmission actuator (in acc.

with rep. manual)

Alternative solution

Disassemble transmission

actuator

(upper-lower section)

Replace transmission actuator

lower section

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_02, 34, 66

Iveco error number: B, 2B, 4B

Error display: In vehicle display: B, 2B, 4B
MobiDig/ Testman: 11, 43, 75

Error description: Error 11: Short circuit to plus (+) at output to warning buzzer.

Error 43: Interruption at output to warning buzzer.
Error 74: Short circuit to ground at output to warning buzzer.

Error detection: By ECU hardware, by error 11 if output is activated and by error 43/75, if

output is not activated.

System response: In case of error 11, the warning buzzer is permanently active, and by error

43/75 the warning buzzer cannot be controlled.

Error rectification:

Check output ADM pin 12 on

Iveco range selector

In case of vehicles with MUX (multiplex

unit) ZF check is impossible! OEM task

Conduct measurements with

warning buzzer connected

Conduct measurements without

warning buzzer connected

Further errors related to the Iveco

range selector (PTO, rear light,

ZF CAN)

Ignition off: Disconnect plug pin 12 from
range selector. Resistance measurement
line 12 to ground: as is

Approx. <

1 KOhm

Check/Replace

> 100 KOhm

Check/Replace

range selector

wiring harness,

warning buzzer.

Ignition off: Disconnect plug pin 12 from range
selector. Resistance measurement line 12 to
ground. AS IS:

> 1 MOhm

Lines OK

Check/Replace

range selector

< 1 MOhm
Check/Replace
wiring harness,

warning buzzer.

Check vehicle-end wiring

(Iveco)!

Notice:
Range selector and wiring
Display ZF scope of delivery

Check warning buzzer!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_005_11, 43, 75

Iveco error number: C, 2C, 4C

Error display: In vehicle display: C, 2C, 4C MobiDig/ Testman: 12, 44, 76

Error description: Error 12: Short circuit to ground at output to rear light relay

Error 44: Interruption at output to rear light relay
Error 76: Short circuit to plus (+) at output to rear light relay

Error detection: By ECU hardware, if output is activated.

System response: ECU output is deactivating. Rear light does not function anymore.

No further system restrictions.

Error rectification:

Vehicle with MUX

ZF check impossible!

Further errors related to the

Iveco range selector (PTO,

warning buzzer, ZF CAN)

Replace range selector

Check output ADM pin 5 on

Iveco range selector

Output ADM pin 5 on Iveco

range selector defective

(resistance measurement

approx. 330 Ohm).

Check vehicle-end wiring!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF_ASTRONIC_1328_754_105_12, 44, 76

Iveco error number: D, E

Error display: In vehicle display: D, E MobiDig/ Testman: 13, 14

Error description: Error 13: Short circuit to ground at output to PTO 1.

Error 14: Short circuit to ground at output to PTO 2.

Error detection: By ECU hardware, if output is activated.

System response: During travel, gear shifts are blocked. If the vehicle is at a standstill, the

clutch opens and a shift is automatically made to neutral. Other gear shifts
not possible.

Error rectification:

Vehicle with MUX

ZF check impossible!

Further errors related to the

Iveco range selector (PTO,

warning buzzer, ZF CAN)

Replace range selector

PTO 1: Output ADM pin 13.

PTO 2: Output ADM pin 4.

Check at range selector!

Pin 4 and/or pin 13 on range

selector defective (resistance

measurement approx.

330 Ohm

).

Check relay PTO 1 and/or

PTO 2

Replace relay PTO 1 and/or

PTO 2!

Check vehicle-end wiring!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_13, 14

Iveco error number: 11, 31, 51

Error display: In vehicle display: 11, 31, 51 MobiDig/ Testman: 17, 49, 81

Error description: Error 17 Short circuit to ground at output to valve Y1 (GB).

Error 49 Interruption at output to valve Y1 (GB).
Error 81 Short circuit to plus (+) at output to valve Y1 (GB).

Error detection: By ECU hardware, if output is activated.

System response: During travel, upshifts are handled just as downshifts. Input speed is

synchronized by engine speed.

Upshifts are inhibited if target speed is smaller than engine idling speed.
Prolonged shift time. Stationary: Prolonged teach-in time. Prolonged shift
time when shifting out of neutral. Prolonged shift time out of PTO mode.
The automatic shift unit is deactivated. Driving in manual mode possible.

In case of ZF error 81 (51), gear shifts are inhibited. Shifting into starting

gears and driving off is possible.

Follow-up error possible: ZF error number 155 (9B).

Error rectification:

Replace transmission actuator

(in acc. with rep. manual)

Alternative solution

Disassemble transmission

actuator

(upper-lower section)

Replace transmission actuator

lower section

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_17, 49, 81

Iveco error number: 12, 32, 52

Error display: In vehicle display: 12, 32, 52 MobiDig/ Testman: 18, 50, 82

Error description: Error 18: Short circuit to ground Y17 valve clutch slowly opening.

Error 50: Interruption. Y17 valve clutch slowly opening.
Error 82: Short circuit to plus (+) Y17 valve clutch slowly opening.

Error detection: By ECU hardware, if output is activated.

System response: ECU output is deactivating. Two valves are responsible for opening and two

valves are responsible for closing (fast, slow). If one Close/Open valve fails,
this function is adopted by the other Close/Open valve. Reduced comfort
when maneuvering and starting. If both closing and opening valve fail, the
system is not available. The automatic shift unit is deactivated. Driving in
manual mode possible.

In case of error 82 gear shifting is completely inhibited. The system is not

available. If the error occurs during travel, attempts are made to keep the
clutch engaged. As soon as the vehicle comes to a standstill and the clutch
opens, the system automatically shifts to neutral.

Error rectification:

Ignition OFF

Disconnect clutch actuator from
transmission actuator and connect it to
terminal tester.

Short circuit

to ground

Interruption

AS IS approx.

Replace clutch

< 10 Ohm or

0 Ohm

actuator

AS IS > 22 Ohm

AS IS approx.

10 -20 Ohm

Contact ZF

Replace clutch

actuator

AS IS approx.

10 -22 Ohm

Contact ZF

Measurements at cable connector to
transmission actuator or in terminal tester.
Resistance measurement Y17 valve clutch
slowly opening: Pin 9 (A) to Pin 16/17 (J)

Short circuit

to plus (+)

- Disconnect clutch actuator.

- Ignition on

- Abort diagnosis and new start.

- Read out the error memor

Error interruption in error

memory

Replace clutch actuator

Error short circuit to plus (+) in

the error memory

Bypass ground

y.

Replace transmission actuator

Note

Correct value = 15.6 Ohm. However, to take proper account of temperature-related factors and
measurement errors and/or measurement conditions, ensure system stays within the above-mentioned
tolerance limits!

ZF Friedrichshafen AG ZF-ASTRONIC_1328_754_105_018,50,82
LKS-T 2003-06-25

Iveco error number: 13, 33, 53

Error display: In vehicle display: 13, 33, 53 MobiDig/ Testman: 19, 51, 83

Error description: Error 19: Short circuit to ground Y15 valve clutch slowly closing.

Error 51: Interruption Y15 valve clutch slowly closing.
Error 83: Short circuit to plus (+) Y15 valve clutch slowly closing.

Error detection: By ECU hardware, if output is activated.

System response: ECU output is deactivating. Two valves are responsible for opening and two

valves are responsible for closing (fast, slow). If one Close/Open valve fails,
this function is adopted by the other Close/Open valve. Reduced comfort
when maneuvering and starting. If both closing and opening valve fail, the
system is not available. The automatic shift unit is deactivated. Driving in
manual mode possible.

In case of error 83 gear shifting is completely inhibited. The system is not

available. If the error occurs during travel, attempts are made to keep the
clutch engaged. As soon as the vehicle comes to a standstill and the clutch
opens, the system automatically shifts to neutral.

Error rectification:

Ignition OFF

Disconnect clutch actuator from
transmission actuator and connect it to
terminal tester.

Short circuit

to ground

Interruption

AS IS approx.

< 10 Ohm or

0 Ohm

Replace clutch

actuator

AS IS approx.

10 -20 Ohm

Contact ZF

AS IS > 22 Ohm

Replace clutch

actuator

AS IS approx.

10 - 22 Ohm

Contact ZF

Measurements at cable connector to
transmission actuator or in terminal tester.
Resistance measurement Y15 valve clutch
slowly closing: Pin 7 (A) to Pin 16/17 (J)

Short circuit

to plus (+)

- Disconnect clutch actuator.

- Ignition on

- Abort diagnosis and new start.

- Read ou

t the error memory.

Error interruption in error

memory

Replace clutch actuator

Error short circuit to plus (+) in

the error memory

Bypass ground

Replace transmission actuator

Note

Correct value = 15.6 Ohm. However, to take proper account of temperature-related factors and
measurement errors and/or measurement conditions, ensure system stays within the above-mentioned
tolerance limits!

ZF Friedrichshafen AG ZF-ASTRONIC_1328_754_105_019,51,83
LKS-T 2003-06-25

Iveco error number: 14, 34, 54

Error display: In vehicle display: 14, 34, 54 MobiDig/ Testman: 20, 52, 84

Error description: Error 20: Short circuit to ground Y16 valve, fast opening clutch.

Error 52: Interruption.
Error 84: Short circuit to plus (+)

Error detection: By ECU hardware, if output is activated.

System response: ECU output is deactivating. Two valves are responsible for opening and two

valves are responsible for closing (fast, slow). If one Close/Open valve fails,
this function is adopted by the other Close/Open valve. Reduced comfort
when maneuvering and starting. If both closing and opening valve fail, the
system is not available. The automatic shift unit is deactivated. Driving in
manual mode possible.

In case of error 84 gear shifting is completely inhibited. The system is not

available. If the error occurs during travel, attempts are made to keep the
clutch engaged. As soon as the vehicle comes to a standstill and the clutch
opens, the system automatically shifts to neutral.

Error rectification:

Ignition OFF

Disconnect clutch actuator from
transmission actuator and connect it to
terminal tester.

Short circuit

to ground

Interruption

AS IS approx.

Replace clutch

AS IS approx.

< 10 Ohm or

0 Ohm

actuator

10 - 20 Ohm

Contact ZF

AS IS > 22 Ohm

Replace clutch

actuator

AS IS approx.

10 - 22 Ohm

Contact ZF

Measurements at cable connector to
transmission actuator or in terminal tester.
Resistance measurement
slowly closing:

Pin 12 (D) to Pin 16/17 (J)

Y16 valve clutch

Short circuit

to plus (+)

- Disconnect clutch actuator.

- Ignition on

- Abort diagnosis and new start.

- Read out the error memor

Error interruption in error

memory

Replace clutch actuator

Error short circuit to plus (+) in

Bypass ground

y.

the error memory

Replace transmission actuator

Note

Correct value = 15.6 Ohm. However, to take proper account of temperature-related factors and
measurement errors and/or measurement conditions, ensure system stays within the above-mentioned
tolerance limits!

ZF Friedrichshafen AG ZF-ASTRONIC_1328_754_105_020,52,84
LKS-T 2003-06-25

Iveco error number: 15, 35, 55

Error display: In vehicle display: 15, 35, 55 MobiDig/ Testman: 21, 53, 85

Error description: Error 21: Short circuit to ground Y14 valve clutch fast closing.

Error 53: Interruption Y14 valve clutch fast closing.
Error 85: Short circuit to plus (+) Y14 valve clutch fast closing.

Error detection: By ECU hardware, if output is activated.

System response: ECU output is deactivating. Two valves are responsible for opening and two

valves are responsible for closing (fast, slow). If one Close/Open valve fails,
this function is adopted by the other Close/Open valve. Reduced comfort
when maneuvering and starting. If both closing and opening valve fail, the
system is not available. The automatic shift unit is deactivated. Driving in
manual mode possible.

In case of error 85 gear shifting is completely inhibited. The system is not

available. If the error occurs during travel, attempts are made to keep the
clutch engaged. As soon as the vehicle comes to a standstill and the clutch
opens, the system automatically shifts to neutral.

Error rectification:

Ignition OFF

Disconnect clutch actuator from
transmission actuator and connect it to
terminal tester.

Short circuit

to ground

Interruption

AS IS approx.

Replace clutch

< 10 Ohm or

0 Ohm

actuator

AS IS > 22 Ohm

AS IS approx.

10 - 20 Ohm

Contact ZF

Replace clutch

actuator

AS IS approx.

10 - 22 Ohm

Contact ZF

Measurements at cable connector to
transmission actuator or in terminal tester.
Resistance measurement
slowly closing:

Pin 8 (B) to pin 16/17 (J)

Y14 valve clutch

Short circuit

to plus (+)

- Disconnect clutch actuator.

- Ignition on

- Abort diagnosis and new start.

- Read out the error memor

Error interruption in error

memory

Replace clutch actuator

Error short circuit to plus (+) in

the error memory

Bypass ground

y.

Replace transmission actuator

Note

Correct value = 15.6 Ohm. However, to take proper account of temperature-related factors and
measurement errors and/or measurement conditions, ensure system stays within the above-mentioned
tolerance limits!

ZF Friedrichshafen AG ZF-ASTRONIC_1328_754_105_021,53,85 ZF­LKS-T 2003-06-25

Iveco error number: 16, 36, 56

Error display: In vehicle display: 16, 36, 56 MobiDig/ Testman 22, 54, 86

Error description: Error 22: Short circuit to ground at ADVP output.

Error 54: Interruption at ADVP output.
Error 86: Short circuit to plus (+) at ADVP output.

Error detection: By ECU hardware.

System response: Error 22, 54: During driving, gear shifts are inhibited.

The clutch opens as soon as the vehicle comes to a standstill.

stops, neutral position is automatically engaged

. Other gear shifts not possible.

When vehicle

System not available.

Notice: Regardless of the location where the short circuit is produced

(whether at the n_ab1 sensor, range selector, on the GS (transmission
actuator) or at a location at the wiring harness), with the current system
configuration in place, this will result in the vehicle being stranded.

Error 86: System still available.

Error rectification:

ADVP pin 11 after ignition

ON: Nominal: approx. 24 V

Replace transmission actuator

(in acc. with rep. manual)

Wiring/Range selector

Iveco-end OK

Repair Iveco wiring/range

selector

Check ZF output speed sensor,

sensor 1 (transmission wiring GS

(transmission actuator)– KS (clutch

actuator) – sensor).

Replace/Repair output speed

sensor

Repair/Replace ZF wiring

Replace transmission actuator

(in acc. with rep. manual)

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_22, 54, 86

Iveco error number: 19

Error display: In vehicle display: 19
MobiDig/ Testman 25

Error description: Short circuit to ground at SD output to display.

Error detection: Repeated reading of the signal to be transferred.

System response: ”EE“ message flashing on display. No further system responses.

Error rectification:

MUX vehicles do not use this

output!

Check wiring/plug

transmission actuator pin 9 at

vehicle-end.

Replace vehicle-end wiring.

Display (position/connection)

possibly check pin 1 to pin 3!

Replace/Repair display.

Internal defect at transmission

actuator plug

Replace transmission actuator.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_25

Iveco error number: 1A

Error display: In vehicle display: 1A
MobiDig/ Testman: 26

Error description: CAN engine configuration timeout.

Error detection: An error is set after the message timeout.

System response: The substitute signals saved in the control unit are used since there are no

CAN message signals. Reduced function possible during automatic

operations and starting gear calculation.
Connecting speed for downshifts may be too low.
Poor clutch opening possible when stopping.

Error rectification:

Message is generated in the EDC.

Check whether error is saved in

EDC (timeout).

Error active?

Check fuse box

fuses!

Further errors saved to

transmission electronic unit?

e.g. error 33/113/178

Software possibly old version;

program most recent version.

Conduct CAN bus check as in case

of error 28 because this is a timeout

error!

Error saved in

EDC?

Replace EDC

(OEM)

Check EDC and/or

engine speed

signal (OEM)

Error not saved

in EDC

EDC

deactivation

relay defective?

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_26

Iveco error number: 1B

Error display: In vehicle display: 1B
MobiDig/ Testman: 27

Error description: Signal error engine configuration message.

Error detection: No signal or signal defective.

System response: The substitute signals saved in the control unit are used since there are no

CAN message signals. Reduced function possible during automatic

operations and starting gear calculation.
Connecting speed for downshifts may be too low.
Poor clutch opening possible when stopping.

Error rectification:

Message is generated in the EDC.

Check whether error is saved in

EDC

(timeout).

Further errors saved to

transmission electronic unit?

e.g. error 27, 31

Software possibly old version;

program most recent version.

CAN bus check as in the case of

error 28 because this is a timeout

error!

Error saved in

EDC?

Check EDC and/or

engine speed

signal (OEM)

Error not saved

in EDC!

EDC

deactivation

relay defective?

Replace EDC

(OEM)

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_27

Iveco error number: 1C

Error display: In vehicle display: 1C
MobiDig/ Testman 28

Error description: Signal error "current driveline retarder torque percentage“

Error detection: No signal or signal defective.

System response: The automatic unit fails. Therefore, the drive resistance of the starting gear

cannot be calculated. If vehicle comes to a standstill, mid-starting gear is

selected. No other functional restrictions.

Error rectification:

Ignition off!

Connect terminal tester between
transmission actuator (GS) and
vehicle wiring.
CAN H Pin 8 to GS
CAN L Pin 12 to GS
CAN H+ Pin 14 from GS
CAN L+ Pin 13 from GS

Further CAN errors present

(183, 184, etc.)?

Ignition off!

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!

Further Intarder errors

(e.g. 27, 29)?

Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to

CAN L

AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

Check/Replace Intarder

terminators dama

ged/not connected.

electronics.

Start vehicle again.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_28

Iveco error number: 1D

Error display: In vehicle display: 1D
MobiDig/ Testman 29

Error description: Signal error: "Engine cooling performance increase".

Error detection: No signal or signal defective.

System response: No downshift requests are issued by the Intarder so to increase the engine

speed for improving cooling performance!

Error rectification:

Ignition off!

Connect terminal tester between
transmission actuator (GS) and
vehicle wiring.
CAN H Pin 8 to GS
CAN L Pin 12 to GS
CAN H+ Pin 14 from GS
CAN L+ Pin 13 from GS

Further CAN errors present

(183, 184, etc.)?

Ignition off!

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!

Further Intarder errors

(e.g. 27, 28)?

Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to

CAN L

AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

Check/Replace Intarder

terminators dama

ged/not connected.

electronics.

Start vehicle again.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_29

Iveco error number: 1E

Error display: In vehicle display: 1E
MobiDig/ Testman 30

Error description: Signal error: "Driveline retarder configuration".

Error detection: No signal or signal defective.

System response: The automatic shift unit is deactivated. If vehicle comes to a standstill, mid-

starting gear is selected. No other functional restrictions.

Error rectification:

Ignition off!

Connect terminal tester between
transmission actuator (GS) and
vehicle wiring.
CAN H Pin 8 to GS
CAN L Pin 12 to GS
CAN H+ Pin 14 from GS
CAN L+ Pin 13 from GS

Further CAN errors present

(183, 184, etc.)?

Ignition off!

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!

Further Intarder errors

(e.g. 27, 28)?

Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to

CAN L

AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

Check/Replace Intarder

terminators damaged/not connected.

electronics.

Start vehicle again.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_30

Iveco error number: 1F

Error display: In vehicle display: 1F

MobiDig/ Testman 31

Error description: Signal error: "Present engine retarder torque percentage".

Error detection: No signal or signal defective.

System response: The automatic shift unit is deactivated. If vehicle comes to a standstill, mid-

starting gear is selected. No other functional restrictions. No information

about the engine braking torque. If the engine brake is active, the shift

quality may be reduced. It is assumed that the engine brake is not active.

Error rectification:

Ignition off!

Connect terminal tester between
transmission actuator (GS) and
vehicle wiring.
CAN H Pin 8 to GS
CAN L Pin 12 to GS
CAN H+ Pin 14 from GS
CAN L+ Pin 13 from GS

Further CAN errors present

(183, 184, etc.)?

Ignition off!

CAN bus test with digital multimeter

Further Intarder errors

(e.g. 27, 28)?

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to

CAN L

AS IS: approx. 120 Ohm Connection to one terminator

Check/Replace Intarder

electronics.

AS IS: high ohm reading CAN interrupted and/or both

damaged.

terminators damaged/not connected.

Start vehicle again.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_31

Iveco error number: 20

Error display: In vehicle display: 20

MobiDig/ Testman 32

Error description: Signal error: "Engine retarder configuration".

Error detection: No signal or signal defective.

System response: The automatic shift unit is deactivated. If vehicle comes to a standstill, mid-

starting gear is selected. No other functional restrictions.

Error rectification:

Ignition off!

Connect terminal tester between
transmission actuator (GS) and
vehicle wiring.
CAN H Pin 8 to GS
CAN L Pin 12 to GS
CAN H+ Pin 14 from GS
CAN L+ Pin 13 from GS

Further CAN errors present

(183, 184, etc.)?

Ignition off!

CAN bus test with digital multimeter

Further Intarder errors

(e.g. 27, 28)?

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to

CAN L

AS IS: approx. 120 Ohm Connection to one terminator

Check/Replace Intarder

electronics.

AS IS: high ohm reading CAN interrupted and/or both

damaged.

terminators damaged/not connected.

Start vehicle again.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_32

Iveco error number: 21

Error display: In vehicle display: 21

MobiDig/ Testman 33

Error description: CAN timeout "Motor Retarder configuration".

Error detection: An error is set after the message timeout.

System response: The automatic shift unit is deactivated. If vehicle comes to a standstill, mid-

starting gear is selected. No other functional restrictions.

Error rectification:

Ignition off!

Check fuse box fuses!

Connect terminal tester between
transmission actuator (GS) and
vehicle wiring.
CAN H Pin 8 to GS
CAN L Pin 12 to GS
CAN H+ Pin 14 from GS
CAN L+ Pin 13 from GS

Error active?

Further CAN errors present

(26, 178, 183, 184, etc.)?

Further Intarder errors

(e.g. 27, 28)?

Ignition off!

Check/Replace Intarder

electronics.

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to

CAN L

Start vehicle again.

AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

terminators damaged/not connected.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_33

Iveco error number: 2D, 2E

Error display: In vehicle display: 2D, 2E MobiDig/ Testman: 45, 46

Error description: Error 45: Short circuit to ground at output to PTO 1.

Error 46: Short circuit to ground at output to PTO 2.

Error detection: By ECU hardware, if output is not activated.

System response: PTO1 and/or PTO2 not available.

No further system restrictions.

Error rectification:

Vehicle with MUX

ZF check impossible!

Further errors related to the

Iveco range selector (PTO,

warning buzzer, ZF CAN)

Replace range selector

PTO 1: Output ADM pin 13.

PTO 2: Output ADM pin 4.

Check at range selector!

Pin 4 and/or pin 13 on range

selector defective (resistance

measurement approx.

330 Ohm

).

Check relay PTO 1 and/or

PTO 2

Replace relay PTO 1 and/or

PTO 2!

Check vehicle-end wiring!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_45, 46

Iveco error number: 3B, 3C

Error display: In vehicle display: 3B, 3C MobiDig/ Testman 59, 60

Error description: Error 59: Feedback signal error PTO 1

Error 60: Feedback signal error PTO 2

Error detection: PTO feedback signal error is active (z_pto_ist = 1) and PTO request

(z_pto_an = 0) as well as PTO output (z_pto_soll = 0) are not active.

System response: If the PTO issues a signal that the PTO is activated although the electronics

has not sent a release signal and the PTO has not been activated by the

driver, then the response signal (PTO activated) is considered to be

incorrect. No further system restrictions!

Error rectification:

Measurement with tester and/or

Testman Pro

Check power take-off unit.
Signal can be measured with the
Testman Pro:

Testman Pro

-Test inputs-outputs

-Logbook

-Test device

-Check inputs

Check power take-off unit and

wiring (OEM wiring)

Check all PTO signals:

Tester signal Testman Pro

1. Driver's request z_pto_an SN1A = 1

2. Control signal z_pto_soll SN1F = 1

3. Confirmation signal z_pto_ist SN1R = 1

The following conditions must be satisfied if the PTO is to be
activated:

-Main transmission in NEUTRAL

-No active shift commands

-Engine running and no active engine speed error available

-Vehicle stationary

-Accelerator not actuated (Alpha_FP = 0 %)

-Splitter group in K1 position (ECU automatically switches)

-PTO request activated

Check/Replace relays K4/K6 since there is

no system request issued.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_59, 60

Iveco error number: 3D, 3E

Error display: In vehicle display: 3D, 3E MobiDig/ Testman 61, 62

Error description: Error 61: Deactivation error PTO 1

Error 62: Deactivation error PTO 2

Error detection: No PTO 1/2 response after deactivation request.

System response: During driving, gear shifts are inhibited. As soon as the vehicle comes to a

standstill, the clutch opens and shifting to neutral is automatically effected.

Other gear shifts not possible. System not available.

Error rectification:

Measurement with tester and/or

Testman Pro

In case of software bigger than

31_13e switch-off time

doubled!

Check power take-off unit.
Signal can be measured with the
Testman Pro:

Testman Pro

-Test inputs-outputs

-Logbook

-Test device

-Check inputs

Check power take-off unit,

wiring, and switch

(OEM wiring)

Check all PTO signals:

Tester signal Testman Pro

1. Driver's request z_pto_an SN1A = 1

2. Control signal z_pto_soll SN1F = 1

3. Confirmation signal z_pto_ist SN1R = 1

Check/Replace hardware of the

power take-off unit!

Check/Replace switch of power

take-off!

Check/Replace Iveco wiring!

Check PTO connection (Iveco)

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_61, 62

Iveco error number: 3F, 40

Error display: In vehicle display: 3F, 40 MobiDig/ Testman 63, 64

Error description: Error 63: Activation error PTO 1

Error 64: Activation error PTO 2

Error detection: No PTO 1/2 response after deactivation request.

System response: During driving, gear shifts are inhibited. As soon as the vehicle comes to a

standstill, the clutch opens and shifting to neutral is automatically effected.

Other gear shifts not possible. System not available.

Error rectification:

Measurement with tester and/or

Testman Pro

Check PTO air supply! No air removal at PTO permissible

(vehicle bodybuilder)

Check power take-off unit.
Signal can be measured with the
Testman Pro:

Testman Pro

-Test inputs-outputs

-Logbook

-Test device

-Check inputs

Check power take-off unit,

wiring, and switch

(OEM wiring)

Check all PTO signals:

Tester signal Testman Pro

1. Driver's request z_pto_an SN1A = 1

2. Control signal z_pto_soll SN1F = 1

3. Confirmation signal z_pto_ist SN1R = 1

Check/Replace hardware of the

power take-off unit!

Check/Replace switch of power

take-off!

Check/Replace Iveco wiring!

Check PTO connection (Iveco)

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_63, 64

Iveco error number: 4D, 4E

Error display: In vehicle display: 4D, 4E MobiDig/ Testman: 77, 78

Error description: Error 77: Short circuit to plus (+) at output to PTO 1.

Error 78: Short circuit to plus (+) at output to PTO 2.

Error detection: By ECU hardware, if output is not activated.

System response: During travel, gear shifts are blocked. If the vehicle is at a standstill, the

clutch opens and a shift is automatically made to neutral. System not

available!

Error rectification:

Vehicle with MUX

ZF check impossible!

Further errors related to the

Iveco range selector (PTO,

warning buzzer, ZF CAN)

Replace range selector

PTO 1: Output ADM pin 13.

PTO 2: Output ADM pin 4.

Check at range selector!

Pin 4 and/or pin 13 at range

selector defective (without

re

quest = 24V).

Check relay PTO 1 and/or PTO

2 and/or wiring to relay.

Replace relay PTO 1 and/or

PTO 2!

Repair/check vehicle-end

wirin

g!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_77, 78

Iveco error number: 59

Error display: In vehicle display: 59
MobiDig/ Testman 89

Error description: Short circuit to plus (+) at SD (digital signal) output to display.

Error detection: Repeated reading of the signal to be transferred.

System response: ”EE“ message flashing on display. No further system responses.

Error rectification:

MUX vehicles do not use this

output!

Check wiring/ plug

transmission actuator (GS) pin

9 to vehicle-end.

Replace vehicle-end wiring.

Display (position/connection)

possibly check pin 1 to pin 3!

Replace/Repair display.

Internal defect at transmission

actuator plug

Replace transmission actuator.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_89

Iveco error number: 5A

Error display: In vehicle display: 59
MobiDig/ Testman 90

Error description: Communication error between processor 1 and processor 2

(ECU error).

Error detection: If there is no data sent by the other processor, check sum error of data

between processors 1 and 2, and incomplete transfer of initialization data.

System response: During travel, gear shifts are blocked. As soon as the vehicle comes to a

standstill, the clutch opens and shifting to neutral is automatically effected.

Other gear shifts not possible. System not available.

Error rectification:

Vehicle completely de-

energized

Error 90 still present after that

action?

Re-program transmission

actuator a

gain

Error 90 still present after that

action?

Alternative solution

Completely replace

transmission actuator (in acc.

Separate transmission actuator

into upper and lower section

with rep. manual)

Replace upper section (ECU)
(in acc. with the instructions)

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_90

Iveco error number: 5B

Error display: In vehicle display: 5B
MobiDig/ Testman 91

Error description: CAN EBC1 Timeout

Error detection: An error is set after the message timeout.

System response: The automatic unit fails; therefore the drive resistance and the starting gear

cannot be calculated. If vehicle comes to a standstill, mid-starting gear is

selected.

No other functional restrictions.

Error rectification:

No EBC1 message whatsoever

(timeout).

Message issued by ASR/ABS

electronics.

Check fuse box fuses

And/or error 177

Other CAN errors (timeout

errors) e.g. 180, 181, 182, 183,

184 present.

Ignition off!

Short circuit to
ground at pin 8

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to

CAN L

AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

terminators damaged/not connected.

The message contains the following signals:
z_ABS: ABS operation.
z_ASR_EDC: Signal ASR-EDC-Eingriff

Check signal travel (ABS/ASR)

Iveco.

z_ASR_BR : Status ASR-Bremsbetrieb

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_91

Iveco error number: 5C

Error display: In vehicle display: 5C
MobiDig/ Testman 92

Error description: Signal error: "ABS active"

Error detection: No signal or signal incorrect.

System response: The automatic unit fails;

cannot be calculated.

therefore the drive resistance and the starting gear

If vehicle comes to a standstill, mid-starting gear is

selected. No other functional restrictions.

Error rectification:

No z_ABS signal (signal

contained in EBC1 message).

Error 91 present "EBC1

timeout" message issued by

ABS/ASR electronics.

Ignition off!

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to CAN L
AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

terminators damaged/not connected.

Check signal travel (ABS/ASR)

Iveco task!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_92

Iveco error number: 5D

Error display: In vehicle display: 5D
MobiDig/ Testman 93

Error description: Signal error: "ASR engine control unit active".

Error detection: No signal or signal incorrect.

System response: The automatic unit fails;

cannot be calculated.

therefore the drive resistance and the starting gear

If vehicle comes to a standstill, mid-starting gear is

selected. No other functional restrictions.

Error rectification:

No z_ASR signal (signal

contained in EBC1 message).

Error 91 present "EBC1

timeout" message issued by

ABS/ASR electronics.

Ignition off!

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to

CAN L

AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

terminators damaged/not connected.

Check signal travel (ABS/ASR)

Iveco task!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_93

Iveco error number: 5E

Error display: In vehicle display: 5E
MobiDig/ Testman 94

Error description: Signal error: "ASR engine control unit active".

Error detection: No signal or signal incorrect.

System response: The automatic unit fails; therefore the drive resistance and the starting gear

cannot be calculated. If vehicle comes to a standstill, mid-starting gear is

selected. No other functional restrictions.

Error rectification:

No z_ASR signal (signal

contained in EBC1 message).

Error 91 present "EBC1

timeout" message issued by

ABS/ASR electronics.

Ignition off!

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to

CAN L

AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

terminators damaged/not connected.

Check signal travel (ABS/ASR)

Aufgabe von DAF!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_94

Iveco error number: 5F

Error display: In vehicle display: 5F
MobiDig/ Testman 95

Error description: Signal error: "Cruise control active".

Error detection: No signal or signal incorrect.

System response: The automatic shift unit is deactivated.

No other functional restrictions.

Error rectification:

No z_cc_status signal (signal

contained in CCVS message).

Error 182 present "CCVS

timeout” message issued by

EDC.

Ignition off!

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to

CAN L

AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

terminators dama

ged/not connected.

Check signal travel (EDC)

Iveco task!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_95

Iveco error number: 60

Error display: In vehicle display: 60
MobiDig/ Testman 96

Error description: Signal error: "Set cruise control speed".

Error detection: active and no signal or signal defective.

System response: No further functional restrictions. Gear-hunting possible in cruise control

mode.

Error rectification:

No z_cc_set signal or signal

(signal contained in CCVS

message).

Error 182 present "CCVS

timeout” message issued by

EDC.

Ignition off!

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to

CAN L

AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

terminators damaged/not connected.

Check signal travel (EDC)

Iveco task!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_96

Iveco error number: 61

Error display: In vehicle display: 61
MobiDig/ Testman 97

Error description: Signal error: "Engine speed".

Error detection: No signal / signal defective or engine speed > plausible value

System response: While vehicle is in motion clutch is time-controlled during gearshifts.

Reduced closing comfort after the shift.

During upshifts, the engine speed cannot be controlled.
Maneuvering mode not available.

When moving off, clutch is time-controlled.

Reduced closing comfort when maneuvering and setting off.

Error rectification:

Engine speed n_mot

incorrect/missing (signal

contained in EEC1

Error set at n_mot plausible

> 3800 rpm and/or n_mot Signal

missing for longer than 0.8 sec.

Check engine speed in error memory

under environmental conditions!

Engine speed n_mot = 0 rpm

Signal fehlt

Engine speed

n_mot >= 3800 rpm

Signal present!

Clarify with Iveco why

engine speed/vehicle speed

so high!

N_AB > 2500 1/min

CAN error 180 "EEC1 time-

out" and/or other time-out

errors 181, 182 present.

Ignition off!

Check signal travel

(engine speed sensor,

wiring).

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to CAN L
AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high Ohm CAN interrupted and/or both

terminators damaged/not connected.

EDC errors 26, 167, 171

present and in EDC no error

saved.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_97

Check EDC deactivation

relay, possibly defective!

Iveco error number: 62

Error display: In vehicle display: 62
MobiDig/ Testman 98

Error description: Signal error: "Transmission input speed".

Error detection: Plausibility check.

System response: During travel, shift times are longer. When upshifting and downshifting, the

clutch is sometimes closed when the transmission is in neutral, to substitute

the input speed of the engine. If a gear is selected, input speed is substituted

by output speed.

If the vehicle is at a standstill, longer N-gear engagement time.

Reduced closing comfort when manoeuvring and setting off.

Notice: Possible as follow-up error of error 97!

Error rectification:

No transmission input speed

n_sek or transmission input

speed incorrect.

Error occurs when

vehicle is started.

Error occurs

during travel.

During check

phase ignition

OFF again.

Check release

bearing (jamming,

broken)

Error 102 set?

Insufficient air

pressure. Software

error.

Check EOL parameters

(i_HA), software status (12 or

16 gears).

Software

modification

higher than 13e.

Error set at n_sek plausible > 3800

rpm and/or n_sek signal missing for

lon

ger than 0.9 sec.

Check engine speed in error memory

under environmental conditions!

Transmission Input Speed

n_sek >= 3800 rpm

Signal present!

Check engine

Transmission input speed n_sek >= 0 rpm

No signal, check signal travel.

speed/vehicle speed!
N_AB > 2500 1/min

(transmission speed sensor, wiring).

Check counting disc in

transmission.

Check sensor/wiring in

Replace/Secure

counting disc.

Sensor/Wiring defective.

transmission actuator.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_98

Disassemble/replace

transmission.

Replace transmission actuator

(in acc. with rep. manual)

Iveco error number: 63

Error display: In vehicle display: 63
MobiDig/ Testman: 99

Error description: Signal error: "Output speed signal 1".

Error detection: Verification check

System response: Depending on the system version, the output speed signal is calculated from

the redundant output speed information. Redundant speed information is

adopted, depending on vehicle speed signal by CAN or by speedometer

CAN output speed signal.

Error rectification:

No output sensor 1 speed signal

or signal defective.

Replace defective output sensor 1

UFB L02/03!

Error 100/101 set

Output speed

> 2500 rpm

Vehicle speed

too high!

Check vehicle circuit

(vehicle end)

Pin 4/5 to 16/17.

Re-establish supply

voltage.

Check vehicle's ADVP on

transmission actuator output.

Ignition off!

tester. Ignition on!

Install terminal

Range selector failure possible

(e. g. 110).

Pin 18 to pin 6

(transmission end)

Nominal approx 24 volts

Check transmission actuator –

wiring – output speed sensor

plug connections.

Replace damaged component

transmission actuator, wiring

incl. clutch actuator, speed

sensor.

Cyclic test from transmission actuator wiring harness connector to speed
sensor connector:
GS connector Speed sensor connector
ADVP pin 18 to pin 1 (UE)
EF pin 11 to pin 3 (A1)

No cycle:

Replace clutch

actuator with cable

ti

p.

VMGA2 pin 6 to pin 2 (U0)

Replace speed sensor!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_99

Iveco error number: 64

Error display: In vehicle display: 64
MobiDig/ Testman 100

Error description: Signal error: "Output speed signal 2".

Error detection: No signal or signal defective.

System response: If output speed 1 (transmission end) is available, no system functional

restrictions.

Error rectification:

No output sensor 2 speed signal

or signal defective.

Replace defective output sensor

UFB L02/03!

Error 99,101, 101

set

Output speed

> 2500 rpm

Vehicle speed

too high!

Is there a sensor error occurring

at the same time?

Can be read out with

MobiDig/Testman!

Rectify sensor error (possibly
replace transmission actuator)

ZF!

Signal coming from

CAN/speedo drive

Check speedo

(DAF)

TCO1 message.

NOTE: Please do not confuse

Check vehicle-end wiring. DAF!

the two output speed sensors.

Other errors, e.g. ZF error no.

91, 100, 177.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_100

Short circuit to ground to pin 8

(KM - CAN H) possible

Iveco error number: 65

Error display: In vehicle display: 65
MobiDig/ Testman 101

Error description: Both "output speed signals” defective.

Error detection: Verification check

System response: During travel, gear shifts are inhibited. If the vehicle comes to a standstill,

the clutch opens and shifting to neutral is automatically effected. Other gear

shifts not possible. System not available.

Error rectification:

Speed signal of both output

sensors missing or defective.

Replace defective output sensor

UFB L02/03!

Error 99, 100 set

Output speed

> 2500 rpm

Vehicle speed

too high!

Is there a sensor error occurring

at the same time?

Can be read out with

MobiDig/Testman!

Rectify sensor error (possibly
replace transmission actuator)

ZF!

Sensor speed fitted the wrong

way round?

Wiring correctly connected?

Gear selected and displayed ->

no power transmission.

Fit sensor correctly! Connect Kitas

speedo sensor to vehicle

Check wiring (sensor 1 to

Astronic, sensor 2 vehicle end).

Wear of selector fork

Disassemble/replace

transmission.

Check signal travel as with

error 99 and 100.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_101

Iveco error number: 66

Error display: In vehicle display: 66
MOBIDIG/Testman 102

Error description: Plausibility error between "transmission input speed" and "output speed 1".

Error detection: Relationship between input speed and output speed does not correspond to

the ratio of the selected gear.

System response: During travel, gear shifts are inhibited, including attempts to shift to neutral.
Starting gears can be selected and setting off with the starting gear is

possible.

Error rectification:

Plausibility error between

transmission input speed n_sek

and output speed n_ab_1.

At a speed difference between

n_sek (measured) and

n_ge_soll (calculated) > ± 100

1/min an error is set.

(N_ab_1 * i_Istgang) – (n_sek) > ± 100 1/min

Check EOL parameters

(i_HA)

Enter correct value!

Check software

e.g. 16-speed programmed

rather than 12-speed.

Program correct software!

Signal check as with error

99,100, 101.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_102

Iveco error number: 67

Error display: In vehicle display: 67
MobiDig/ Testman 103

Error description: CAN signal error "vehicle speed"

(CCVS Wheel-based vehicle speed)

Error detection: If vehicle speed exceeds the defined threshold value.

System response: Early or late downshifts may arise in automatic mode. No further

restrictions.

Error rectification:

Vehicle speed V_FZG too

high (signal contained in

CCVS messa

ge).

Message is sent from EDC!

Further CAN errors present

in the error memory (e.g.

26, 180, 181, 182)?

Ignition off!

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to CAN L
AS IS: approx. 120 Ohm Connection to terminator damaged.
AS IS: high ohm reading CAN interrupted and/or both

terminators damaged/not connected.

Error not saved in EDC error

memory?

Check EDC deactivation

relay, possibly defective!

(Iveco)

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_103

Iveco error number: 68

Error display: In vehicle display: 68
MobiDig/ Testman 104

Error description: Overvoltage of vehicle main power system

Error detection: Voltage higher “U_Bordnetz_max”

System response: No system restrictions during driving. If error present before ignition ON,

the transmission remains in the check phase, system not available.

Error rectification:

Vehicle voltage too high.

Error present before

ignition ON.

Vehicle remains in check

phase!

Measure vehicle voltage

before transmission

actuator.

Correct vehicle voltage
Nominal: 18V – 29.5V

Out of range.

Measure vehicle voltage

Iveco!!

after transmission

actuator.

Correct vehicle voltage
Nominal: 18V – 29.5V

Out of range.

Replace

transmission

actuator

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_104

Iveco error number: 69

Error display: In vehicle display: 69
MobiDig/ Testman 105

Error description: Undervoltage of vehicle main power system

Error detection: Voltage lower „U_bordnetz_min_grenzw“

System response: During travel and if the vehicle is at a standstill, gear shifts are inhibited. If a

gear is engaged and the driver switches off the ignition, the control unit tries

to shift to neutral. The automatic unit is deactivated after a certain period of

time. If a PTO is activated and the corresponding relay cannot be connected,

the PTO is deactivated. Follow-up errors, due to undervoltage are not

displayed.

Error rectification:

Vehicle voltage too

low.

Already with ignition

ON.

Transmission control

unit is not activated!

Vehicle voltage < 9V
ECU data storage not

guaranteed.

Measure vehicle

voltage before

transmission actuator.

Correct vehicle voltage

Nominal: 18V – 29.5V

Out of range.

Iveco.

Measure vehicle

voltage after

transmission actuator.

Correct vehicle voltage

Nominal: 18V – 29.5V

Out of range.

Replace transmission

actuator

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_105

Iveco error number: 6B

Error display: In vehicle display: 6B
MobiDig/ Testman 107

Error description: Faulty voltage supply of the clutch travel sensor (AU output).

Error detection: Voltage outside range.

System response: The automatic shift unit is deactivated. During travel, the clutch is opened

and closed in a time-controlled manner. Maneuvering not possible. If the

vehicle does not set off within a certain amount of time, the transmission

automatically shifts to neutral. The new starting gear must be selected using

the range selector. Vehicle setting off is difficult and jerky!

Error rectification:

Voltage supply from clutch

actuator outside range.

Cable harness

interruption on

transmission end, short

circuit to plus

(+)/ground to pin 15.

Error currently present

Disconnect clutch actuator

(disconnect plug-in connection

to transmission actuator) and

measure voltage on

transmission actuator output

(ignition on).

Measure voltage

between

pin 15 and pin 16

Nominal =

4.75 V – 5.25 V

Out of range.

Replace transmission

actuator!

Within range.

Terminal tester between

Out of range.

transmission actuator and

clutch actuator

Ignition on

Measure voltage between pin

15 and pin 16

Replace clutch actuator.

Nominal = 4.75 V – 5.25 V

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_107

Iveco error number: 6C

(

Error display: In vehicle display: 6C
MobiDig/ Testman 108

Error description: Range selector error

Error detection: Through switch plausibility check in range selector.

System response: Control lever

: No shifting possible during travel. At standstill the ”last
starting gear“ is selected in the manual mode (half-automatic mode), the
automatic starting gear in automatic mode. If neutral is activated or existing
at standstill, the starting gear is not engaged.
Neutral switch

: No shifting possible during travel. At standstill a starting
gear can be selected and the vehicle can be driven with a starting gear
selected.

R gear selector signals

: If there is a fault (no signal) in one of the two
Reverse gear switches at a standstill and if the tip-action speed range
selector is pulled backwards (-/--), the low-ratio Reverse gear (RL) is
engaged.

Error rectification:

Range selector error missing!

Ignition off!

Terminal tester between vehicle

and transmission actuator

connector to vehicle).

Measure on transmission actuator

output ADVP pin 11 to VM pin 16.

Check range selector voltage

supply (ignition ON)

Nominal = 24 V.

Ignition off!

Measure on transmission actuator,

output ADVP pin 7 VM pin 8.

Measure on range selector, input

VPE pin 6 to VM pin 8.

Check ZF CAN bus

Pin 3 and pin 6.

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to CAN L
AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

CAN bus OK

terminators damaged/not connected.

Check < 19.5 V

transmission actuator.

Check < 19.5 V wiring.

Check < 19.5 V terminal

30 wiring.

Check and/or
replace range

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_005_108

Replace CAN bus wiring and/or CAN modules (possibly range

selector, transmission actuator).

Iveco error number: 6E

Error display: In vehicle display: 6E
MobiDig/ Testman 110

Error description: ZF CAN Timeout

Error detection: ZF-CAN information can neither be sent nor received.

System response: If the error is detected with ignition ON, the system is not available. While

driving, gear shifting is not possible. If vehicle comes to a standstill, the last
starting gear selected (with the rotary switch) is engaged. Further driving
possible only with starting gear. If reverse gear is selected, the transmission
automatically shifts to neutral. No range selector message. System not
available!

Error rectification:

Timeout ZF CAN

Ignition off!

Terminal tester between vehicle

and transmission actuator

(connector to vehicle).

Check ADVP

interruption.

Check vehicle wiring and/or

range selector

Output speed sensor

1and/or ADVP

connection in

transmission actuator

defective.

Check ZF CAN bus

Pin 3 and pin 6.

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to CAN L
AS IS: approx. 120 Ohm Connection to one terminator

damaged.

CAN bus OK (60 Ohm)

AS IS: high ohm reading CAN interrupted and/or both

terminators damaged/not connected.

CAN bus faulty

Replace CAN bus wiring and/or CAN modules (possibly range

selector, transmission actuator).

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_110

Iveco error number: 71

Error display: In vehicle display: 71
MobiDig/ Testman 113

Error description: CAN “Driveline Retarder configuration” timeout.

Error detection: An error is set after the message timeout.

System response: The automatic unit is no longer available. Manual shifting still possible.

If vehicle comes to a standstill, mid-starting gear is selected.
No other functional restrictions.

Error rectification:

Timeout Driveline Retarder

Confi

guration.

Check/Replace Intarder

electronics.

Further Timeout errors present?

Yes

Ignition OFF!

No

Connect terminal tester between transmission actuator
(GS) and vehicle wiring.
CAN H Pin 8 to GS
CAN L Pin 12 to GS
CAN H+ Pin 14 from GS
CAN L+ Pin 13 from GS

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to CAN L
AS IS: approx. 120 Ohm Connection to terminator damaged.
AS IS: high ohm reading CAN interrupted and/or both

Check/Replace Intarder

electronics.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_113

terminators damaged/not connected.

Iveco error number: 72

Error display: In vehicle display: 72
MobiDig/ Testman 114

Error description: Clutch closes accidentally when vehicle is stationary with gear

engaged.

Error detection: At standstill and gear engaged, clutch closing!

System response: When vehicle stops, shifting is effected to neutral. No further system

restrictions.

Error rectification:

Check clutch parts and clutch

installation place

(contamination etc.)!

Reduced error frequency

(e.g. 2 x on 50000 km).

Clean clutch installation space!

High error frequency

(e.g. 50 x on 50000 km).

Grease release fork driving points –
release bearing (OLISTA Longtime

3EP from Optimol)

Disassemble transmission, check

clutch!

Clean clutch installation space!

Replace release fork and release

If anything unusual is detected on

bearing!

the clutch (driver/thrust plate).

Grease release fork driving points –

release bearing! Grease input shaft

Replace parts affected!

slightly!

(OLISTA Longtime 3EP from

O

ptimol)

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_114

Iveco error number: 75

Error display: In vehicle display: 75
MobiDig/ Testman: 117

Error description: Error in clutch teach-in process.

Error detection: Clutch does not move even though the clutch valves have been activated.

Condition: No clutch travel sensor error (ZF 124), no engine speed error
(ZF 97), no input speed error (ZF 98).

System response: System not available.

Error rectification:

Clutch teach-in error

Air supply OK!

Error 117 occurs immediately

after en

gine is started.

Check clutch actuator (KS) installation
situation. Signal for absolute clutch stroke
with clutch closed (100%) < 24mm.
e. g. incorrect clutch rod fitted! Rod not
attached.
Clutch valve error present?

Error occurs about 5 min. after

Sensor error, program software for special
variant (extended areas).
Check sensor values on transmission
actuator; temperature difference > 10°C;
replace transmission actuator.
(transmission actuator < No. 15000)

end of learn-in phase with engine

running.

-Specified clutch fitted.

Check peripheral clutch parts.

-Release bearing jamming/broken.

- Fork broken.

- Calculate/check push rod length and/or
installation dimensions.

- Clutch actuator does not move when the engine
is started (replace clutch actuator).

Replace parts affected!

Iveco/ZF

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_117

Iveco error number: 76

Error display: In vehicle display: 76
MobiDig/ Testman: 118

Error description: Clutch not opening.

Error detection: No clutch travel modification although opening valves were activated.

Condition: No clutch travel sensor error (ZF 124), no engine speed error
(ZF 97), no input speed error (ZF 98).

System response: During driving, gear shifts are inhibited. If the vehicle comes to a standstill,

attempts are made to open the clutch. When vehicle stops, neutral position is
automatically engaged. Other gear shifts not possible. System not available.

Error rectification:

Further clutch errors present:

ZF 18, 20

Replace clutch actuator.

Air supply OK? Re-establish air supply!

Check peripheral clutch parts!

- Clutch actuator leaking and/or valve is

jamming!

- Specified clutch fitted.

- Release bearing jamming/damaged.

- Fork broken.

- Rod jammed.

-Clutch actuator does not move when the

Check transmission actuator for

sensor error!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_118

Replace parts affected!

Iveco/ZF

Iveco error number: 77

Error display: In vehicle display: 77
MobiDig/ Testman: 119

Error description: Clutch not closing/not transferring engine torque.

Error detection: Clutch sensor does not detect closing. Engine speed is unlike input speed.

Condition: No clutch travel sensor error (ZF 124), no engine speed error
(ZF 97), no input speed error (ZF 98).

System response: During driving, gear shifts are inhibited. If the vehicle comes to a standstill,

attempts are made to open the clutch. When vehicle stops, neutral position is
automatically engaged. Other gear shifts not possible. System not available.

Error rectification:

Further clutch errors present:

ZF 19

, 21

Replace clutch actuator.

Air supply OK? Re-establish air supply!

Check peripheral clutch parts!

- Clutch actuator leaking and/or valve is

jamming!

- Specified clutch fitted.

- Release bearing jamming/damaged.

- Fork broken.

- Rod jammed.

-Clutch actuator does not move when the

Check transmission actuator for

sensor error!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_119

Replace parts affected!

Iveco/ZF

Iveco error number: 78, 79, 7A, 7B

Error display: In vehicle display: 78, 79, 7A, 7B MobiDig/ Testman 120, 121, 122, 123

Error description: Mechanical error on clutch actuator valve:

Y17 valve, clutch slowly opening (error 120),
Y15 valve, clutch slowly closing (error 122),
Y16 valve, clutch quickly opening (error 121),
Y14 valve, clutch quickly closing (error 123).

Error detection: Clutch does not open/close although valves have been activated.

System response: The automatic unit is not available. Manual shifting possible.

If one valve fails, this function is adopted by the other Close/Open valve.

Reduced comfort when maneuvering and starting. If both closing and
opening valves fail, the system is not available.

Error rectification:

Ignition off!

Replace clutch actuator

(in acc. with rep. manual)

If error is still present:

Check peripheral clutch parts on

function!

- Clutch actuator leaking and/or valve is
jamming!

- Specified clutch fitted.

- Release bearing jamming/damaged.

- Fork broken.

- Rod jammed.

-Clutch actuator does not move when the
engine is started

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_120, 123

Iveco error number: 7C

Error display: In vehicle display: 7C
MobiDig/ Testman 124

Error description: Signal error clutch travel.

Error detection: Clutch travel sensor signal outside the range

(plausibility check).

System response: While vehicle is in motion, clutch is opened and closed in a time-controlled

manner. Maneuvering impossible. If the vehicle does not set off after a gear
has engaged, the transmission is automatically shifted to neutral. The new
starting gear must be selected using the range selector. Reduced closing
comfort while starting.

Error rectification:

Current error after clutch parts

and/or clutch actuator change.

Correct with Testman PRO

F_124

Check adjustment dimension tappet

on clutch actuator.

Check/set in acc. with Iveco

setting specification

Error Iveco 6B (ZF 107) present.

No

Yes

Check pin 15 AU clutch actuator

power supply Nominal:

4.75 V - 5.25 V

Check output signal on transmission

side pin 10 EU1 (with terminal

tester) to clutch actuator

Nominal: 0.2 V -4.9 V

If signal is out of range, then

replace clutch actuator

Smaller/bigger

4.75V – 5.25V

Replace

transmission

4.75V – 5.25V

Replace clutch actuator, and/or

interruption or short circuit to

ground on pin 10, 15.

Error still present

Check pilot

bearing!

Demount

transmission

actuator.

Check counting disc input speed.

Play on gear ring max. 3mm >3mm probably

pulling pin damaged.

Dismount, re

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_124

pair/replace transmission.

Replace pilot

bearing
(Iveco)

The spring lock washer is centered in the

release cage by 2 centering straps. On this

vehicle, a centering strap sprang from the

Check lock washer

of release bearing!

groove.

Iveco error number: 7E

Error display: In vehicle display: 7E
MobiDig/ Testman 126

Error description: Signal error pressure sensor

Error detection: Voltage on analogue input outside range!

System response: The system function is not restricted if the external air supply is sufficient.

In the case that there is too less atmospheric pressure,

indicator is not shown on the display.

"AL" compressed air

The teach-in process after ignition ON of transmission and clutch is

conducted in a time-dependent manner. The teach-in time could last some
more time. The automatic unit is not available!

Error rectification:

Error is set if signal is outside the

valid range (0.2V – 3.9V cannot

be measured).

Check air supply.

Replace transmission actuator

and/or only transmission actuator

upper section!

Pressure sensor is in the transmission

actuator upper section (ECU)

Disassemble transmission actuator and

replace upper section!

Replace transmission actuator

completely!

Re-assemble transmission actuator!

Start up vehicle.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_126

Iveco error number: 7F

Error display: In vehicle display: 7F
MobiDig/ Testman 127

Error description: Signal error ECU temperature.

Error detection: Voltage level outside range.

System response: The automatic unit is not available. Manual shifting possible. No further

system impairments.

Error rectification:

Error 193 saved at the same time?

Check transmission for seal

integrity and/or overheating.

Check/correct oil level!

Error is set if signal outside valid

range (0.352V – 4.980V cannot

be measured).

Replace transmission actuator

and/or only transmission actuator

upper section!

Pressure sensor is in the transmission

actuator upper section (ECU)

Disassemble transmission actuator and

re

place upper section!

Replace transmission actuator

completely!

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_127

Re-assemble transmission actuator!

Start up vehicle.

Iveco error number: 80

Error display: In vehicle display: 80
MobiDig/ Testman 128

Error description: Signal error oil temperature sensor.

Error detection: Voltage level outside range.

(ADC_Öl_Temp_Ausfall between 0.23V and 4.198V).

System response: No further system impairments.

Error rectification:

Error 193 saved at the same time?

Check transmission for seal

integrity and/or overheating.

Check/correct oil level!

Error is set if signal outside valid

range (0,23V – 4,198V cannot be

measured).

Replace transmission actuator

and/or only transmission actuator

lower section!

Sensor is located in the transmission

actuator lower section. Disassemble

transmission actuator and replace
lower section and/or replace only

sensor if available!

Replace transmission actuator

completely!

Re-assemble transmission actuator!

Start up vehicle.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_128

Iveco error number: 81, 82, 83

Error display: In vehicle display: 81, 82, 83 MobiDig/ Testman 129, 130, 131

Error description: No shift sensor signal present.

Error 129 Short circuit to plus (+).
Error 130 Short circuit to ground/earth.
Error 131 Interruption.

Error detection: By ECU hardware.

System response: If the error occurs during travel when shifting, gear shifts are inhibited.

Shifts can only be made out of neutral. If the vehicle is at a standstill,
starting gears can be selected.

Error rectification:

Ignition off!

Replace transmission actuator

and/or only transmission actuator

lower section!

The shift sensor is located in the

transmission actuator lower section.

Disassemble transmission actuator

and replace lower section!

Replace transmission actuator

completely!

Re-assemble transmission actuator!

Start up vehicle.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_129-131

Iveco error number: 84

Error display: In vehicle display: 84
MobiDig/ Testman 132

Error description: Shift sensor teach-in error.

Error detection: Sensor value outside teach-in range and teach-in process failed with

sufficient air pressure and after three attempts.

Sensor value outside of the teach-in range and teach-in process failed with

insufficient air pressure after a certain waiting time and after

of attempts.

a max. number

System response: With ignition OFF the transmission automatically shifts to neutral.
With ignition ON, attempts are made to teach-in neutral position.
In the case of sufficient air pressure and if the neutral position cannot be

taught in, the teach-in error is set after three attempts.

No error is set in the case of missing air pressure.

Error rectification:

Waiting time approx. 5 min until teach-in

error is set (twenty calibration attempts).

Nominal value shift sensor

300 Ink – 350 Ink

If the sensor value is within its
nominal limit and the failure is

reported, check air supply!

Smaller 300 Ink or bigger 350 Ink

Sensor value

Error occurs during replacement of
transmission actuator. Probably the

gear shift linkage not attached.

Disassemble transmission actuator and

check shift elements!

Lift transmission actuator off

transmission again and attach it

correctly!

Shift elements block, worn, damaged?

Remove and repair/replace transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_132

Iveco error number: 85, 86, 87

Error display: In vehicle display: 85, 86, 87 MobiDig/ Testman 133, 134, 135

Error description: No gate selection sensor signal present

Error 133 Short circuit to plus (+).
Error 134 Short circuit to ground/earth.
Error 135 Interruption.

Error detection: By ECU hardware.

System response: During travel only forwards gears which are opposite to the shift direction

for the reverse gear can be selected. If an error occurs during the shift, the
target gate is engaged in a time-controlled manner. When the vehicle is at a
standstill all permitted starting gears which shift direction is opposite to the
reverse gear can be selected. Reverse gear cannot be selected.

Error rectification:

Ignition off.

Replace transmission actuator

and/or only transmission actuator

lower section!

Gate sensor is located in the

transmission lower section.

Disassemble transmission actuator and

replace lower section!

Replace transmission actuator

completely!

Re-assemble transmission actuator!

Start up vehicle.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_133-135

Iveco error number: 88

Error display: In vehicle display: 88
MobiDig/ Testman 136

Error description: Gate selection sensor teach-in error.

Error detection: Sensor value outside teach-in range and teach-in process failed with

sufficient air pressure and after three attempts.

Sensor value outside of the teach-in range and teach-in process failed with

insufficient air pressure after a certain waiting time and after

of attempts.

a max. number

System response: In the case of an electrical error on the selection valve only the possible gate

is taught in.

Upper forward gears: 10/12 gear => gate 2/3, 16 gear => gate 3/4
Lower forward gears: 10/12 gear => gate R/1, 16 gear => gate 1/2
ECU tries to teach-in the gate of the upper forward gears of the main

transmission. In the case of no success, attempts are made to teach-in the
gate of the lower forward gears. In the case that both cannot be taught in, a
teach-in error of the gate is set. If there is insufficient air and/or a pressure
sensor signal error (ZF error 126), this teach-in attempt is repeated now and
again.

Error rectification:

Nominal value of gate selection sensor

Top 500 Ink - 580 Ink

Bottom 70 Ink -120 Ink

If the sensor value is within its
nominal limit and the failure is

reported, check air supply!

Ignition on and wait until the failure is
set. Waiting time longer than approx.
5 min (with long waiting time).

Waiting time until failure is set > 5 min

< 5 min

Is the sensor value outside the above-

mentioned nominal limits?

Error occurs during replacement of
transmission actuator. Probably the

gear shift linkage not attached.

Disassemble transmission actuator and

check shift elements!

Lift transmission actuator off

transmission again and attach it

correctly!

Shift elements block, worn, damaged? Remove and repair/replace transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_136

Iveco error number: 89, 8A, 8B

Error display: In vehicle display: 89, 8A, 8B MobiDig/ Testman 137, 138, 139

Error description: No GP (planetary range) sensor signal present.

Error 137 Short circuit to plus (+).
Error 138 Short circuit to ground/earth.
Error 139 Interruption.

Error detection: By ECU hardware.

System response: If the error occurs during travel when shifting, GP shifts are inhibited. Only

shifts in the corresponding GP range can be replaced. If the vehicle is at a
standstill, starting gears can be selected.

Error rectification:

Ignition off.

Replace transmission actuator

and/or only transmission actuator

lower section!

The shift sensor is located in the

transmission actuator lower section.

Disassemble transmission actuator

and replace lower section!

Replace transmission actuator

completely!

Re-assemble transmission actuator!

Start up vehicle.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_137-139

Iveco error number: 8C

Error display: In vehicle display: 8C
MobiDig/ Testman 140

Error description: GP sensor teach-in error.

Error detection: Sensor value outside teach-in range.

System response: With ignition OFF the GP remains in the last setting selected.

When the ignition is switched ON, attempts are made to teach-in GP-high. If

this cannot be done after several attempts, attempts are made to teach-in GP­low. If neither GP-high nor low can be taught in, a teach-in error is set. The
system is not available! If there is insufficient air and/or a pressure sensor
signal error (ZF error 126), this teach-in attempt is repeated now and again.

Error rectification:

Nominal value of GP (range group)

GPS 490 Ink -590 Ink

GPL 80 Ink -130 Ink

If the sensor value is within its
nominal limit and the failure is

reported, check air supply!

Ignition on and wait until the failure is

set. Waiting time longer than approx.

5 min (with long waiting time).

< 5 min

Waiting time until failure is set > 5 min

Is the sensor value outside the above-

mentioned nominal limits?

Error occurs during replacement of
transmission actuator. Probably the

gear shift linkage not attached.

Disassemble transmission actuator and

check shift elements!

Lift transmission actuator off

transmission again and attach it

correctly!

Shift elements block, worn, damaged? Remove and repair/replace transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_140

Iveco error number: 8D, 8E, 8F

Error display: In vehicle display: 8D, 8E, 8F MobiDig/ Testman 141, 142, 143

Error description: No GP (planetary range) sensor signal present.

Error 141 Short circuit to plus (+).
Error 142 Short circuit to ground/earth.
Error 143 Interruption.

Error detection: By ECU hardware.

System response: If the error occurs during travel when shifting, GV shifts are inhibited.

Further driving only possible with the last selected GV (splitter group)
position. The automatic shift unit is deactivated.

Error rectification:

Ignition off!

Replace transmission actuator

and/or only transmission actuator

lower section!

The shift sensor is located in the

transmission actuator lower section.

Disassemble transmission actuator

and replace lower section!

Replace transmission actuator

completely!

Re-assemble transmission actuator!

Start up vehicle.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_141-143

Iveco error number: 90

Error display: In vehicle display: 90
MobiDig/ Testman 144

Error description: GV sensor teach-in error.

Error detection: Sensor value outside teach-in range.

System response: With ignition OFF the GV remains in the last setting selected.

When the ignition is switched ON, attempts are made to teach-in GVS. If

this cannot be done after several attempts, attempts are made to teach-in
GVL. If neither GV-S nor L can be taught in, a teach-in error is set. The
system is not available! If there is insufficient air and/or a pressure sensor
signal error (ZF error 126), this teach-in attempt is repeated now and again.

Error rectification:

Nominal value of GV (splitter group)

GVS 500 Ink -650 Ink

GVL 70 Ink -140 Ink

sensor

If the sensor value is within its
nominal limit and the failure is

reported, check air supply!

Ignition on and wait until the failure is

set. Waiting time longer than approx. 5 in

(with long waiting time).

Waiting time until failure is set > 5 min

< 5 min

Is the sensor value outside the above-

mentioned nominal limits?

Error occurs during replacement of
transmission actuator. Probably the

gear shift linkage not attached.

Disassemble transmission actuator and

check shift elements!

Lift transmission actuator off

transmission again and attach it

correctly!

Shift elements block, worn, damaged? Remove and repair/replace transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_144

Iveco error number: 91

Error display: In vehicle display: 91
MobiDig/ Testman 145

Error description: GP disengagement error.

Error detection: GP does not leave the previous position within a defined time.

System response: When shifting from GPL to GPS during a shift, the highest gear in GPL is

selected and when shifting from GPS to GPL, the lowest gear in GPS is
selected. If the vehicle is at a standstill and GPL cannot be selected, the
lowest gear in GPS is selected as starting gear. Reverse gear not available in
GPS.

The automatic unit is deactivated!

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply.

Check software status

(present status).

Program a new software status

(13e).

Check clutch.

Only clutch conform to

specification permissible: Iveco!

Solenoid valves can be activated

and/or valve error set.

Disassemble transmission actuator and

check shift elements!

Valves cannot be activated and/or

valve error active: Replace

transmission actuator!

(Error KM/KP/interruption)

Visual check of the shift elements OK?

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_145

Iveco error number: 92

Error display: In vehicle display: 92
MobiDig/ Testman 146

Error description: Changeover error during GP shift.

Error detection: GP does not change into the new position within a defined time.

System response: The automatic shift unit is deactivated. If the GP position requested cannot

be selected, the GP cylinder tries to shift three times. If the GP position
requested cannot be selected, the following gear is selected:

When shifting from GPL to GPS, the highest gear in GPL is selected. When

shifting from GPS to GPL, the lowest gear in GPS is selected. If the vehicle
is at a standstill and GPL cannot be selected, the lowest gear in GPS is
selected as starting gear.

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply.

Check software status

(present status).

Program a new software status

(13e).

Check clutch.

Only clutch conform to

specification permissible: Iveco!

Solenoid valves can be activated

Disassemble transmission actuator and

and/or valve error set.

check shift elements!

Valves cannot be activated and/or

valve error active: Replace

transmission actuator!

(Error KM/KP/interruption)

Visual check of the shift elements OK?

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_146

Iveco error number: 93

Error display: In vehicle display: 93
MobiDig/ Testman 147

Error description: GP not engaging.

Error detection: Within a defined time, GP reaches neither the limit position nor the new or

old position.

System response: The automatic shift unit is deactivated. If the GP position requested cannot

be selected, the GP cylinder tries to shift three times. If the gear requested
cannot be selected, the previous GP position is selected. If the previous GP
position cannot be selected, an error is set. The transmission shifts to
neutral.

In all operating modes GP shift attempts can be made again.

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply.

Check software status

(present status).

Program a new software status

(13e).

Check clutch.

Only clutch conform to

specification permissible: Iveco.

Solenoid valves can be activated

Disassemble transmission actuator and

and/or valve error set.

check shift elements!

Valves cannot be activated and/or

valve error active: Replace

transmission actuator!

(Error KM/KP/interruption)

Visual check of the shift elements OK?

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_147

Iveco error number: 94

Error display: In vehicle display: 94
MobiDig/ Testman 148

Error description: GV (splitter group) does not disengage.

Error detection: GV (splitter group) does not leave the previous position within a defined

time.

System response: The automatic shift unit is deactivated. The transmission performs an upshift

into the next gear
(e.g. if a shift from 2

th

into 4

). The highest or lowest gear which can be selected

nd

to 3rd gear is not possible, the transmission shifts up

(when changing gear and for the starting gear) is the one engaged in the
most recently selected GV (splitter group) position.

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply.

Check software status

(present status).

Program a new software status

(13e).

Check clutch.

Only clutch conform to

specification permissible: Iveco.

Solenoid valves can be activated

Disassemble transmission actuator and

and/or valve error set.

check shift elements!

Valves cannot be activated and/or

valve error active: Replace

transmission actuator!

(Error KM/KP/interruption)

Visual check of the shift elements OK?

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_148

Iveco error number: 95

Error display: In vehicle display: 95
MobiDig/ Testman 149

Error description: Shifting error during GV shift.

Error detection: GV does not change into new position within a defined time.

System response: The automatic shift unit is deactivated. The transmission performs an upshift

into the next gear
(e.g. if a shift from 2

th

into 4

). The highest or lowest gear which can be selected

nd

to 3rd gear is not possible, the transmission shifts up

(when changing gear and for the starting gear) is the one engaged in the
most recently selected GV (splitter group) position.

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply.

Check software status

(present status).

Program a new software status

(13e).

Check clutch.

Only clutch conform to

specification permissible: Iveco!

Solenoid valves can be activated

Disassemble transmission actuator and

and/or valve error set.

check shift elements!

Valves cannot be activated and/or

valve error active: Replace

transmission actuator!

(Error KM/KP/interruption)

Visual check of the shift elements OK?

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_149

Iveco error number: 96

Error display: In vehicle display: 96
MobiDig/ Testman 150

Error description: GV not engaging.

Error detection: Within a defined time, GV reaches neither the old nor the new position.

Error is set only at standstill!

System response: System not available. GV shift attempts can be made again.

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply.

Check software status

(present status).

Program a new software status

(13e).

Check clutch.

Only clutch conform to

specification permissible: Iveco.

Solenoid valves can be activated

and/or valve error set.

Valves cannot be activated and/or

valve error active: Replace

Disassemble transmission actuator and

check shift elements!

transmission actuator!

(Error KM/KP/interruption)

Visual check of the shift elements OK.

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_150

Iveco error number: 97

Error display: In vehicle display: 97
MobiDig/ Testman 151

Error description: Selector cylinder not disengaging.

Error detection: Selector cylinder does not leave previous position.

System response: The automatic shift unit is deactivated. If the error occurs during the shift,

the transmission shifts back into the previous gear. If the previous gear
cannot be selected because of too high speed, the next possible gear is
selected. If the highest possible gear cannot be selected, the transmission
shifts to neutral.

If the vehicle is at a standstill and the gear requested cannot be selected, the

transmission shifts to neutral. Repeated shifting must be triggered again
using the range selector.

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply.

Check software status

(present status).

Program a new software status

(13e).

Check clutch.

Only clutch conform to
specification permissible: Iveco.

Solenoid valves can be activated

and/or valve error set.

Valves cannot be activated and/or

valve error active: Replace

transmission actuator!

(Error KM/KP/interruption)

Disassemble transmission actuator and

check shift elements!

Visual check of the shift elements OK?

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_151

Iveco error number: 98

Error display: In vehicle display: 98
MobiDig/ Testman 152

Error description: Changeover error during gate selection process (selector cylinder).

Error detection: Selector cylinder does not change into the new gate.

System response: The automatic shift unit is deactivated. If the error occurs during the shift,

the transmission shifts back into the previous gear. If the previous gear
cannot be selected because of too high speed, the next possible gear is
selected. If the highest possible gear cannot be selected, the transmission
shifts to neutral.

If the vehicle is at a standstill and the gear requested cannot be selected, the

transmission shifts to neutral. Repeated shifting must be triggered again
using the range selector.

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply.

Check software status

(present status).

Program a new software status

(13e).

Check clutch.

Only clutch conform to

specification permissible: Iveco.

Solenoid valves can be activated

and/or valve error set.

Valves cannot be activated and/or

valve error active: Replace

transmission actuator!

(Error KM/KP/interruption)

Disassemble transmission actuator and

check shift elements!

Visual check of the shift elements OK?

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_152

Iveco error number: 99

Error display: In vehicle display: 99
MobiDig/ Testman 153

Error description: Selector cylinder not engaging.

Error detection: Selector cylinder is neither shifting into the new gate limit position nor into

the old gate limit position.

System response: The automatic shift unit is deactivated. The transmission shifts to neutral.

Repeated gear shifting must be triggered using range selector. If no gate can
be selected, the system is not available.

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply.

Check software status

(present status).

Program a new software status

(13e).

Check clutch.

Only clutch conform to

specification permissible: Iveco.

Solenoid valves can be activated

and/or valve error set.

Valves cannot be activated and/or

valve error active: Replace

transmission actuator!

(Error KM/KP/interruption)

Disassemble transmission actuator and

check shift elements!

Visual check of the shift elements OK?

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_153

Iveco error number: 9A

Error display: In vehicle display: 9A
MobiDig/ Testman 154

Error description: Main transmission not disengaging.

Error detection: Gear selected signal does not disappear once clutch has been opened and

neutral has been requested.

System response: The automatic shift unit is deactivated. During travel, the clutch closes in the

previous gear. The next shift attempt must be triggered using the range
selector.

If the vehicle is at a standstill, gear shifting is only permitted once the

neutral signal has been reached. Setting off and driving can be attempted
with the gear selected if the gear is equal to or less than the lowest gear in
GPS.

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply.

Check software status

(present status).

Program a new software status

(13e).

Check clutch.

Only clutch conform to

specification permissible: Iveco.

Solenoid valves can be activated

and/or valve error set.

Valves cannot be activated and/or

valve error active: Replace

transmission actuator!

Assemble transmission actuator, check

shift elements as far as possible.

Visual check of the shift elements OK.

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_154

Iveco error number: 9B

Error display: In vehicle display: 9B
MobiDig/ Testman 155

Error description: Main transmission not engaging.

Error detection: Shift cylinder does not leave neutral position. Clutch exceeds defined

closing value during out-of-mesh position and gear is not activated.

System response: The automatic shift unit is deactivated. During travel and if the vehicle is at

a standstill, transmission shifts to neutral. Repeated shift attempt must be
triggered using the range selector.

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply.

Check software status

(present status).

Program a new software status

(13e).

Check clutch.

Only clutch conform to

specification permissible: Iveco.

Solenoid valves can be activated

and/or valve error set.

Valves cannot be activated and/or

valve error active: Replace

transmission actuator!

(Error KM/KP/interruption)

Disassemble transmission actuator and

check shift elements!

Visual check of the shift elements OK.

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_155

Iveco error number: 9C

Error display: In vehicle display: 9C
MobiDig/ Testman 156

Error description: Incorrect gear shift.

Error detection: Shift sensor detects shifting in the wrong direction.

System response: The automatic shift unit is deactivated. Automatic shift to neutral. Clutch

remains opened if shifting to neutral is not possible. Repeated gear shifting
must be triggered using range selector.

Error rectification:

AL on the display and/or air supply

to vehicle OK.

Re-establish air supply!

Check rotary switch/range selector

(connection OK).

Replace and/or connect up

correctly rotary switch/range

selector!

(OEM)

Disassemble transmission actuator and

check shift elements!

Shift elements block, worn, damaged?

Remove and repair/replace

transmission.

Replace transmission actuator.

Error still present.

Remove and repair/replace

transmission.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_156

Iveco error number: 9D

Error display: In vehicle display: 9D
MobiDig/ Testman 157

Error description: Gate selection sensor (main transmission) leaves selected position.

Error detection: Gate selection sensor exceeds maximum permissible travel during driving

without a shift having been triggered.

System response: The transmission attempts to shift the gear back into its limit position. If the

gear has been completely deactivated, a suitable speed dependent gear is
engaged automatically.

Error rectification:

Check software status

(present status).

Program new software status.

If possible, measure travel sensor values

GA with loaded vehicle (gate selection

sensor value moves).

Limit stop for gate ½ and/or ¾ minus

50 increments, then error is set!

Remove and repair/replace

transmission.

Check transmission actuator number.

Transmission actuator no. in acc.

with UFB L01/26

(< 15000 replace transmission

actuator

)

Check vehicle ground path

Vehicle circuit OK.

Nominal 19.5V – 29.5V

Shift elements block, worn, damaged?

Repair vehicle ground and/or

vehicle circuit.

Remove and repair/replace

transmission.

Replace transmission actuator.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_157

Iveco error number: 9E

Error display: In vehicle display: 9E
MobiDig/ Testman 158

Error description: Signal shift sensor (main transmission) leaves selected position.

Error detection: Shift sensor signal exceeds maximum permissible travel during driving

without a shift having been triggered.

System response: The transmission attempts to shift the gear back into its limit position. If the

gear has been completely deactivated, a suitable speed dependent gear is
engaged automatically.

Error rectification:

Check software status

(present status).

Program new software status.

If possible, measure gate sensor with

loaded vehicle (mechanical migration).

Limit stop even/odd minus 80

increments.

Then, error is set!

Check detent and/or remove and

repair/replace transmission.

Check transmission actuator number.

Transmission actuator no. in acc.

with UFB L01/26

(< 15000 replace transmission

actuator)

Check vehicle ground path

Vehicle circuit OK.

Repair vehicle ground and/or

vehicle circuit.

Nominal 19.5V – 29.5V

Disassemble transmission actuator and

check shift elements (detent).

Shift elements block, worn, damaged?

Check spring and detent, and/or

detent groove worn.

Remove and repair/replace

transmission.

Replace transmission actuator.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_158

Iveco error number: 9F

Error display: In vehicle display: 9F
MobiDig/ Testman 159

Error description: GP sensor signal leaves position selected.

Error detection: GP signal exceeds maximum permissible travel during driving without a

shift having been triggered.

System response: The transmission attempts to shift the gear back into its limit position. If the

gear has been completely deactivated, a suitable speed dependent gear is
engaged automatically.

Error rectification:

Check software status

(present status).

Program new software status.

If possible measure GP sensor with

loaded vehicle (mechanical migration).

Limit stop GPL/GPS minus 60

increments, then error is set!

Check detent and/or remove and

repair/replace transmission.

Check transmission actuator number.

Transmission actuator no. in acc.

with UFB L01/26

(< 15000 replace transmission

Check vehicle ground path

Vehicle circuit OK.

Repair vehicle ground and/or

vehicle circuit.

Nominal 19.5V – 29.5V

Disassemble transmission actuator and

check shift elements (detent).

Shift elements block, worn, damaged?

Check spring and detent, and/or

detent groove worn.

Remove and repair/replace

transmission.

Replace transmission actuator.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_159

Iveco error number: A0

Error display: In vehicle display: A0
MobiDig/ Testman 160

Error description: GV sensor signal (splitter) leaves position selected.

Error detection: GV signal exceeds maximum permissible travel during driving without a

shift having been triggered.

System response: The transmission attempts to shift the gear back into its limit position. If the

gear has been completely deactivated, a suitable speed dependent gear is
engaged automatically.

Error rectification:

Check software status

(present status).

Program new software status.

If possible measure GV sensor with

loaded vehicle (mechanical migration).

Gate selection sensor value moves

Check detent and/or remove and

repair/replace transmission.

Check transmission actuator number.

Transmission actuator no. in acc.

with UFB L01/26

(< 15000 replace transmission

Check vehicle ground path

Vehicle circuit OK.

Repair vehicle ground and/or

vehicle circuit.

Nominal 19.5V – 29.5V

Disassemble transmission actuator and

check shift elements (detent).

Shift elements block, worn, damaged?

Check spring and detent, and/or

detent groove worn.

Remove and repair/replace

transmission.

Replace transmission actuator.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_160

Iveco error number: A3

Error display: In vehicle display: A3
MobiDig/ Testman 163

Error description: Engine does not respond to torque action.

Error detection: No engine intervention (increase in engine speed) possible via CAN

interface.

System response: During travel, gear shifts are blocked.
Setting off permissible. Clutch function and comfort are reduced.

Error rectification:

Speed cannot be increased (during

downshifts).

Vehicle end check/Elimination via OEM.

Transmission end possibilities.

Latest software status

Check the following function

components:

- Injection pump

- Diesel filter

- Fuel conduct (circuit etc.)

- Mechanics engine brake flaps

(current version).

Assemble the gear shift rail with detent

for gate (UFB L01/18).

Gear change shaft
Old: 1327 306 005
New: 1327 306 008

Introduction ex transmission
number into production
12 AS 2301 No. 1419
12 AS 2301 IT No. 203583

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_163

Iveco error number: A4

Error display: In vehicle display: A4
MobiDig/ Testman 164

Error description: Signal error engine torque (calculated injection volume in % by EDC)

driver’s request (Drivers demand engine percent torque signal).

Error detection: No signal or signal incorrect.

System response: The automatic unit is deactivated and cruise control operation not possible.

Manual shifting is possible. The closing quality of the clutch may be
reduced.

Once the clutch has been closed, the injection volume is approved by the

EDC. This results in poor shift quality after shifting.

If vehicle comes to a standstill, mid-starting gear is selected. Setting off

possible. No other functional restrictions.

Error rectification:

Driver's request via accelerator not OK.

Check accelerator/accelerator wiring.

accelerator/periphery (OEM).

Replace/Repair

Further errors saved in EDC?

Check EDC

(OEM)

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_164

Iveco error number: A5

Error display: In vehicle display: A5
MobiDig/ Testman 165

Error description: Signal error "Accelerator position" (Accelerator pedal position signal)

Error detection: No signal or signal incorrect.

System response: The automatic shift unit is deactivated. Manual shifting possible. The shift

quality may be reduced. If vehicle comes to a standstill, mid-starting gear is
selected. Setting off possible. Maneuvering and setting of quality may be
reduced.

Error rectification:

Accelerator not OK.

Check accelerator/accelerator wiring.

accelerator/periphery (OEM).

Replace/Repair

Further errors saved in EDC?

Check EDC

(OEM)

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_165

Iveco error number: A6

Error display: In vehicle display: A6
MobiDig/ Testman 166

Error description: Permanent idling signal.

Error detection: Accelerator position greater than coasting position and idling signal active.

System response: During travel automatic mode not available. Manual shifting permitted. If

the vehicle comes to a standstill, maneuvering and setting off no longer
possible. System not available.

Error rectification:

Accelerator/idling switch not OK.

Check accelerator/accelerator wiring/idling

switch

.

Replace/repair/teach-in

accelerator/periphery (OEM).

Nominal

: Idling signal = 0

with alpha FP > 4% + 2%

Error is set with idling signal 1 and

accelerator

pedal position > 20%

Further errors saved in EDC?

Check EDC

(OEM)

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_166

Iveco error number: A8

Error display: In vehicle display: A8
MobiDig/ Testman 168

Error description: Signal error "Accelerator idling switch" (AP low idle switch)

Error detection: No idling signal or idling signal incorrect.

System response: During travel, the automatic unit is deactivated, manual shifting is possible.

After ignition OFF – ON (approx. 5 sec.), as long as the accelerator pedal

value is in coasting mode (pedal not activated alpfa_fp = 0%) and the idling
signal is off, AP or FP appear on the display.

If the idling signal does not appear within a determined time, an error is set

and AP or FP disappears from the display. ECU checks the lower idling
speed. Setting off is permitted once the verification check has been satisfied.

Error rectification:

Accelerator/idling switch not OK.

Check accelerator/accelerator wiring/idling

switch

.

Replace/repair/teach-in

accelerator/periphery (OEM).

Nominal

: Idling signal = 0

with alpha FP > 4% + 2%

Error is set with idling signal 0 and

accelerator pedal position > 0%.

Further errors saved in EDC?

Check EDC

(OEM)

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_168

Iveco error number: A9

Error display: In vehicle display: A9
MobiDig/ Testman 169

Error description: Deactivation relay in ECU (transmission actuator) does not disengage.

Error detection: During system test: If the deactivation relay is disengaged, the digital

outputs can be activated.

System response: During driving, gear shifts are inhibited. The clutch opens as soon as the

vehicle comes to a standstill. When vehicle stops, neutral position is
automatically engaged. Other gear shifts not possible. System not available.

Error rectification:

Disconnect battery off the vehicle.

Vehicle should be de-energized for

approx. 5 minutes!

Voltage felt with ignition off

(< 16.9V) Measurement before

voltage supply transmission

actuator.

Voltage < 16.9V (to 0V) and error

after ignition on again present.

Voltage > 16.9V, Voltage after

ignition off does not fall.

Yes

Check vehicle (ignition) OEM.

Replace transmission actuator

Replace transmission actuator

completely!

Alternative solution

Disassemble transmission

actuator

(upper-lower section)

Replace transmission actuator’s

upper section

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_169

Iveco error number: AA

pp

Error display: In vehicle display: AA
MobiDig/ Testman 170

Error description: No voltage supply of term. 30 or deactivation relay in ECU does not engage.

Error detection: During check phase, ignition ON, no voltage on the power supply pins.

System response: System not available. Clutch and transmission status are maintained.

Error rectification:

Check vehicle end voltage supply

term. 30

Check fuse box fuses!

Voltage supply OK?

Nominal approx. 24 V

Repair voltage supply on vehicle

end.

Measurement before voltage

supply transmission actuator.

Vehicle circuit min = 18.0 V

Vehicle circuit max = 29.5 V

Disconnect battery off the vehicle.

Vehicle should be de-energized for

a

rox. 5 minutes!

Error still present?

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_005_170

Replace transmission actuator

Iveco error number: AB

Error display: In vehicle display: AB
MobiDig/ Testman 171

Error description: Signal error “Current percent engine torque” (Actual engine percent torque

signal)

Error detection: No signal or signal incorrect.

System response: Automatic unit is deactivated, manual shifting is possible. The shift quality

may be reduced. If vehicle comes to a standstill, mid-starting gear is
selected. Setting off possible. “CL” clutch overload detection could appear
earlier.

Error rectification:

Current engine torque

(m_mot_akt %)

Further EDC errors present

(e. g. 26/167/97)

EDC deactivation relay

defective.

No error saved in EDC!

Signal can be measured with

tester.

Replace deactivation relay

(OEM)

Sporadically/constantly no

signal.

Check EDC on vehicle end

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_171

Iveco error number: AE

Error display: In vehicle display: AE
MOBIDIG/Testman 174

Error description: Signal error "Kickdown switch" (Kickdown switch signal)

Error detection: No signal or signal incorrect.

System response: Kickdown operating mode impossible. No other functional restrictions.

Error rectification:

Signal kickdown

(z_Kd on/off).

Signal can be measured with

tester.

Sporadically/constantly no

signal.

Check the following
components:

-EDC

-Accelerator pedal (teach-in)

-Wiring (signal travel)

-Kickdown switch

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_174

Iveco error number: AF

Error display: In vehicle display: AF
MobiDig/ Testman 175

Error description: Signal error "Ignition lock" (term.15)

Error detection: No ignition signal and engine is running.

System response: During travel, gear shifting is inhibited. If the vehicle is at a standstill and

the engine is running, ECU is not deactivated. Setting off gears can be
selected (forwards and reverse). The vehicle can be driven with a starting
gear selected.

If the engine is not running, the system is not available.

Error rectification:

Same error in EDC or in other

electronic units

Check terminal 15 supply.

Connect terminal tester at

vehicle end.

Pin 1 and

pin 17.

Nominal 18.0V – 29.5V

< 18.0V

Check terminal 15 supply.

Check ADVP at transmission

actuator

Pin 11 and pin 17.

< 18.0V

Check voltage supply term. 30

pin 4/5 to pin 16/17

Voltage supply terminal 30

OK?

Nominal 18.0V – 29.5V

Nominal 18.0V – 29.5V

OK?

Yes No

Voltage supply
Repair vehicle.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_175

Replace transmission

actuator.

Iveco error number: B1

Error display: In vehicle display: B1
MobiDig/ Testman 177

Error description: System error CAN bus off.

Error detection: CAN system messages cannot be sent or received. Failure after timeout.

System response: During travel, gear shifts are inhibited.

Clutch opens when vehicle comes to a standstill and neutral position is
automatically engaged. Other gear shifts not possible. System not available.

Error rectification:

Bus off: Error in other

electronic units.

Individual check of ECUs.

Error in other ECUs.

Check vehicle wiring.

(OEM)

Replace regarding ECU

and/or

-Interruption

-Short circuit to plus

-Short circuit to ground
CAN L/H (Pin 8/12)
Possible follow-up
errors:
26, 33, 91, 100, 113,
178, 199

Ignition off!

Troubleshooting with

CANALYZER!!

CAN bus test with digital multimeter

Resistance measurement between CAN H and CAN L - ignition off!
Nominal: 60 Ohm
AS IS: approx. 0 Ohm Short circuit from CAN H to CAN L
AS IS: approx. 120 Ohm Connection to one terminator

damaged.

AS IS: high ohm reading CAN interrupted and/or both

terminators damaged/not connected.

ZF Friedrichshafen AG
LKS-T 2004-01 ZF-ASTRONIC_1328_754_105_177