⇒ Air injection, Wabco........................................................Page 62
Door control, IFE..................................................................Page 25
SD 206-2.97
Page 3 of
62
Page 4
BOSCH ABS/ASR 2E
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition and press button for more than 1 second
The fault codes are emitted in three blocks. The first block indicates which control unit
status (configuration) is set. In the second and third blocks the faults in the diagonals FL/RR
(second block) and FR/RL (third block) can be read out.
Pause between flashes............................................................ approx. 0.5 s
Duration of flashes................................................................... approx. 0.5 s
Pause between individual blocks............................................. approx. 1.5 s
Example of flashcode: Flashcode 2 in Block 1 for an ABS unit,
flashcode 2 in Block 2 and flashcode 1 in
Block 3.
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 3 seconds
Relay for pressure control valve cannot switch (sticking))...................................13
Signal path for ASR solenoid valve......................................................................14
Connection diagram for request button
X124
X202X202X201Bus X40
SD 206-2.97
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62
Page 6
BOSCH ABS/ASR 3E
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press button for > 2 seconds
Blocks 1 and 2 indicate the configuration of the control unit. In Blocks 3 and 4 the faults in
the diagonals FL/CR/RL (Block 3) and FR/CL/RR (Block 4) can be read out.
Example of flashcode: Flashcode 2 in Block 1, Flashcode 2 in Block 2, Flashcode 3 in
Block 3 and Flashcode 1 in Block 4.
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 3 seconds
Relay for pressure control valve cannot switch (sticking) ................................................13
Signal path for ASR solenoid valve..................................................................................14
Inadmissible configuration (incorrect solenoid valve may be fitted).................................15
SD 206-2.97
Page 7 of
62
Page 8
BOSCH ABS/ASR 2M
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press button for > 1 second
Blocks 1 and 2 indicate the configuration to which the control unit is set. In Blocks 3 and 4
the faults in the diagonals FL/RR (Block 3) and FR/RL (Block 4) can be read out.
Duration of a flash.................................................................... approx. 0,2 s
Pause between flashes............................................................ approx. 0,4 s
Pause between blocks............................................................. approx. 1,5 s
Example of flashcode: Flashcode 2 in Block 1, Flashcode 2 in Block 2,
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 2 seconds
ASR check lamp:Continually on: fault in servomotor path
Gap recognition from control unit 81.25935-6410 onwards
− Drive vehicle at speed > 20 km/h
− Stop vehicle and switch off ignition
− Switch on ignition
⇒ Gap in order: ABS lamp continually on.
⇒ Gap enlarged: ABS lamp flashes 3 x and then remains continually on.
Adjust speed sensors and accelerate vehicle several times from standstill
to > 20 km/h so that the control unit can adjust to the change in the gaps.
Flashcode 3 in Block 3 and Flashcode 1 in Block 4.
on
off
Block 1Block 2Block 3Block 4
Dimmed permanent light: fault in signal at terminal W
SD 206-2.97
Page 8 of
62
Page 9
Block 1:Flashcode
ABS unit with HGB (from control unit 81.25935-6410)......................................2
ABS unit with ASR engine control and HGB (not an MAN application)..................3
ABS unit with ASR brake control (not an MAN application)...................................4
ABS unit with ASR brake and engine control and HGB...................................5
Flashcodes 3 and 4 may occur if components are defected or not connected up.
Block 2:Flashcode
24 V operation: individual control modified on front axle .......................................2
Block 3 (FL/RR) and Block 4 (FR/RL):
Type of faultFlashcode
No fault...................................................................................................................1
Control unit defective .............................................................................................2
Speed sensor signal path:
⇒ front: inadmissible gap or short-circuit...............................................................3
⇒ rear: inadmissible gap or short-circuit...............................................................4
⇒ front: crack or short-circuit.................................................................................5
⇒ rear: crack or short-circuit..................................................................................6
Undervoltage or relay for pressure control valve cannot be triggered ...................7
Relay for pressure control valve cannot switch (sticking) ....................................13
Signal path for ASR solenoid valve......................................................................14
Connection diagram for request button
Bus X40
X124
X201
X202X202
SD 206-2.97
Page 9 of
62
Page 10
BOSCH ABS/ASR 2M Stage 1
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press button for > 1 second
Blocks 1 and 2 indicate the configuration to which the control unit is set. In Blocks 3 and 4
the faults in the diagonals FL/RR (Block 3) and FR/RL (Block 4) can be read out.
Duration of a flash............................................................................................approx. 0.2 s
Pause between flashes....................................................................................approx. 0.4 s
Pause between blocks.....................................................................................approx. 1.5 s
Example of flashcode: Flashcode 2 in Block 1, Flashcode 2 in Block 2,
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 3 seconds
Connection diagram for request button
Flashcode 3 in Block 3 and Flashcode 1 in Block 4.
on
off
Block 1Block 2Block 3Block 4
Bus X40X201X202X202
SD 206-2.97
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62
Page 11
Block 1:Flashcode
ABS unit with HGB...............................................................................................................2
ABS unit with ASR engine control and HGB (not an MAN application)..................................3
ABS unit with ASR brake control and HGB (not an MAN application)...................................4
ABS unit with ASR brake and engine control and HGB...................................................5
Flashcodes 3 and 4 may occur if components are defective or not connected up.
Block 2:Flashcode
24 V operation: individual control modified on front axle .......................................................2
Block 3 (FL/RR) and Block 4 (FR/RL):
Type of faultFlashcode
No fault...................................................................................................................................1
Control unit defective .............................................................................................................2
Speed sensor signal path:
⇒ front: inadmissible gap or short-circuit...............................................................................3
⇒ rear: inadmissible gap or short-circuit...............................................................................4
⇒ front: crack or short-circuit.................................................................................................6
⇒ rear: crack or short-circuit..................................................................................................7
Undervoltage or relay for pressure control valves cannot be triggered..................................9
Relay for pressure control valve cannot switch (sticking) ....................................................13
Signal path for ASR control valve ........................................................................................14
Fault in servomotor ..............................................................................................................15
Fault in C3/B7-Signal...........................................................................................................16
Fault in signal at terminal W ................................................................................................17
Wheel equalisation difference too large...............................................................................18
Fault in signal path for relay for engine brake/retarder switch-off
(emission possible only in Block 4)......................................................................................19
Fault in signal path for clutch switch ....................................................................................20
Gap recognition
− Drive vehicle at > 20 km/h
− Stop vehicle and switch off ignition
− Switch on ignition
⇒ Gap in order: ABS lamp is continually on.
⇒ Gap enlarged: ABS lamp flashes 3x and then remains continually on.
Adjust speed sensors and accelerate vehicle several times from standstill to > 20 km/h
so that the control unit can adjust to the changed gaps.
SD 206-2.97
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Page 12
BOSCH ABS/ASR CI 12
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Wait for 2 seconds and then press button for at least 2 seconds.
The flashcodes are emitted in two blocks. Block 1 indicates the configuration to which the
control unit is set. Block 2 indicates the actual fault code. Each fault code must be requested individually.
Pause before first flash ....................................................................................approx. 3 s
Duration of a flash............................................................................................approx. 0.5 s
Pause between hundreds and tens or tens and units.......................................approx. 3 s
Pause between hundreds and hundreds..........................................................approx. 1 s
Pause between tens and tens..........................................................................approx. 1 s
Pause between units and units.........................................................................approx. 1 s
Example of flashcode: Flashcode 5 in Block 1, Flashcode 121 in Block 2.
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press the button
− Switch on ignition and keep button pressed for > 2 seconds
− Do not switch off ignition until at least 5 seconds have passed.
Connection diagram for request button
on
off
Block 1Block 2
SD 206-2.97
Page 12 of
X202
62
Page 13
Block 1:Flashcode
Pure ABS unit, modified individual control on front axle.................................................2
ABS unit with ASR engine control (not an MAN application).................................................3
ABS unit with ASR brake control (not an MAN application)...................................................4
ABS unit with ASR brake and engine control....................................................................5
Pure ABS unit with Select-Low control on front axle
(not an MAN application)........................................................................................................6
ABS unit with Select-Low control on front axle and
ASR engine control (not an MAN application)........................................................................7
ABS unit with Select-Low control on front axle and
ASR brake control (not an MAN application) .........................................................................8
ABS unit with Select-Low control on front axle and
ASR brake and engine control (not an MAN application).......................................................9
Flashcodes 3, 4, 6, 7, 8 and 9 may occur if components are defective or not connected up.
Block 2:
Type of faultFlashcode
No fault...............................................................................................................................121
CAN data bus:
⇒ BusOff, repair CAN bus.................................................................................................211
⇒ Short-circuit to +UBatt ...................................................................................................817
⇒ Interruption or short-circuit to earth ...............................................................................818
SD 206-2.97
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Page 16
KNORR ABS
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition and wait for 2 seconds
− Press button for 2 seconds
The first block indicates the configuration to which the control unit is set. The second block
indicates the fault codes. Each fault code must be requested individually.
Duration of a ten...............................................................................................approx. 2 s
Duration of a unit..............................................................................................approx. 0.5 s
Pause between tens and units .........................................................................approx. 3 s
Pause between units and units.........................................................................approx. 1 s
Pause between tens and tens..........................................................................approx. 1 s
Example of flashcode: Flashcode 2 in Block 1 and Flashcode 12 in Block 2.
Lamp in
request
button
Erasing the fault memory
− Switch of ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release it after > 2 seconds
Connection diagram for request button
X124X201X202X202
on
off
Block 1Block 2
SD 206-2.97
Page 16 of
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Page 17
Block 1: Flashcode
ABS unit without ASR..........................................................................................................2
ABS unit with ASR engine control (not an MAN application).................................................3
ABS unit with ASR brake control (not an MAN application)...................................................4
ABS unit with ASR brake and engine control (not an MAN application)................................5
Flashcodes 3, 4 and 5 may occur if components are defective or not connected up.
Block 2 (Diagonal 1 FR/RL, Diagonal 2 FL/RR):
Type of fault Flashcode
No fault...................................................................................................................................1
Speed sensors:
⇒ FL, interruption or short-circuit.........................................................................................10
⇒ FL, gap too large, interturn fault, pole wheel fault...........................................................11
⇒ FR, interruption or short-circuit........................................................................................12
⇒ FR, gap too large, interturn fault, pole wheel fault...........................................................13
⇒ RL, interruption or short-circuit........................................................................................14
⇒ RL, gap too large, interturn fault, pole wheel fault...........................................................15
⇒ RR, interruption or short-circuit........................................................................................16
⇒ RR, gap too large, interturn fault, pole wheel fault...........................................................17
Pressure control valve:
⇒ FL, interruption or short-circuit.........................................................................................22
⇒ FR, interruption or short-circuit........................................................................................23
⇒ RL, interruption or short-circuit........................................................................................24
⇒ RR, interruption or short-circuit........................................................................................25
ASR brake valve, RL, interruption or short-circuit................................................................28
ASR brake valve, RR, interruption or short-circuit...............................................................29
ASR engine control, E-Gas/EDC interface fault...................................................................31
Relay voltage supply for pressure control valve:
⇒ Diagonal 1 cannot be switched off (contact sticking).......................................................32
⇒ Diagonal 1 cannot be switched off...................................................................................33
⇒ Diagonal 2 cannot be switched off (contact sticking).......................................................34
⇒ Diagonal 2 cannot be switched off...................................................................................35
ABS engine brake/retarder switch-off, interruption or short-circuit.......................................36
ABS warning lamp, tractor, interruption or short-circuit........................................................38
Switch-on time monitoring of valves (implausible triggering)...............................................52
ASR recognised but not configured......................................................................................53
Differences in wheel diameter too large...............................................................................54
Voltage supply for pressure-control valves, diagonal 1, overvoltage...................................56
Voltage supply for pressure-control valves, diagonal 2, overvoltage...................................57
Speed recording, signals with frequency > 1500 Hz, unwanted signals..............................91
Pressure control valves, bleeding and holding times too long.............................................92
Control unit defective...........................................................................................................99
SD 206-2.97
Page 17 of
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Page 18
WABCO „C“ ABS/ASR
Reading out the fault memory
− Switch-off ignition and connect up request switch
− Switch on ignition and wait for 2 seconds
− Close the switch
If the switch is opened the fault entry in the fault memory will be erased. Switching off the
ignition before the switch is opened ends the flashcode emission without erasing the fault in
the fault memory. The first block is a "starting block"; this begins the fault code emission.
The second block indicates the configuration to which the control unit is set. Blocks 3 and 4
indicate the actual fault codes. The flashcode emission may be deactivated (ended) only in
the pauses between the constantly repeated flashcodes.
Duration of starting block .................................................................................approx. 2.5 s
Pause between blocks.....................................................................................approx. 2.5 s
Duration of a flash............................................................................................approx. 0.5 s
Pause between flashes....................................................................................approx. 0,5 s
Example of flashcode: Starting block (Block1), Flashcode 2 in Block 2,
Lamp in
request
switch
Erasing the fault memory
− Switch off ignition and connect up request switch
− Switch on ignition and wait for 2 seconds
− Close the switch
− Open the switch during flashcode emission.
Connection diagram for request switch
Flashcode 6 in Block 3 and Flashcode 6 in Block 4.
on
off
Block 1 Block 2Block 3Block 4
SD 206-2.97
Page 18 of
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62
Page 19
Block 2:
ABS system 6S/6K.................................................................................................................1
ABS system 4S/4K.................................................................................................................2
ABS system 4S/3K.................................................................................................................3
ABS system 6S/4K.................................................................................................................4
ABS system 6S/3K.................................................................................................................5
Flashcodes 3, 4 and 5 may occur if parts are defective or not connected up.
Control unit defective ...........................................................................................13 .............6
Control unit overvoltage, check alternator charge voltage...................................13 .............7
Control unit defective ...........................................................................................13 .............8
Control unit defective ...........................................................................................13 .............9
Control unit defective ...........................................................................................13 ...........10
Control unit defective ...........................................................................................13 ...........11
Control unit defective ...........................................................................................13 ...........12
Control unit defective ...........................................................................................13 ...........13
Control unit defective ...........................................................................................13 ...........14
Control unit defective ...........................................................................................13 ...........15
Control unit defective ...........................................................................................14 .............0
Control unit defective ...........................................................................................14 .............1
Control unit defective ...........................................................................................14 .............2
Control unit defective ...........................................................................................14 .............3
Control unit defective ...........................................................................................14 .............4
Control unit defective ...........................................................................................14 .............5
Pressure control valve modulation RL/FR, switch-on time too long.....................14 .............6
Pressure control valve modulation RR/FL, switch-on time too long.....................14 .............7
ASR valve RL, switch-on time too long................................................................14 .............8
ASR-valve RR, switch-on time too long...............................................................14 .............9
Control unit defective ...........................................................................................14 ...........10
Control unit defective ...........................................................................................14 ...........11
Control unit defective ...........................................................................................14 ...........12
Control unit defective ...........................................................................................14 ...........13
Control unit defective ...........................................................................................14 ...........14
Control unit defective ...........................................................................................14 ...........15
Block 3 Block 4
SD 206-2.97
Page 21 of
62
Page 22
ECAS air suspension for buses
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Wait for > 2 seconds and press button
Emission of the flashcode begins after 3 seconds. When the first flashcode has been emitted further emission is automatically interrupted. For the next fault the button be pressed
again for at least 2 seconds.
Duration of a unit..............................................................................................approx. 0.5 s
Duration of a ten...............................................................................................approx. 2 s
Pause between a ten and a unit.......................................................................approx. 3 s
Pause between a unit and a unit......................................................................approx. 1 s
Pause between a ten and a ten........................................................................approx. 1 s
Example of flashcode: fault code 12
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 2 seconds
In vehicles with 2 ECAS control units (articulated buses) each control unit must be read
and/or erased separately. For this the 35-pole plug on the control unit not affected must be
pulled out when the ignition is switched off.
Connection diagram for request button
on
off
X201
SD 206-2.97
Page 22 of
62
X203
X203
Page 23
Type of faultFlashcode
Internal fault in control unit:
⇒ Control unit defective.........................................................................................................1
⇒ Cumulative test fault in calibration data, recalibrate displacement sensors......................2
⇒ Control unit defective.........................................................................................................3
⇒ Control unit defective.........................................................................................................4
⇒ Control unit defective.........................................................................................................5
⇒ Control unit defective.........................................................................................................6
⇒ Cumulative test fault in calibration data, recalibrate pressure sensor............................ (8)
⇒ Control unit or ECAS fuse, terminal 30, defective.............................................................9
Sensor fault, interruption or short-circuit to +UB:
⇒ Displacement sensor rear [front] right .............................................................................10
⇒ Displacement sensor rear [front] left ...............................................................................11
⇒ Displacement sensor front [centre]..................................................................................12
Pressure sensor, short-circuit to +UB...............................................................................(15)
Anti-trap device contact strip, interruption or short-circuit to +UB..................................... (17)
Sensor fault, interruption or short-circuit to earth:
⇒ Displacement sensor rear [front] right .............................................................................20
⇒ Displacement sensor rear [front] left ...............................................................................21
⇒ Displacement sensor front [centre]..................................................................................22
Pressure sensor, short-circuit or interruption to earth.......................................................(25)
Anti-trap device contact strip, short-circuit to earth...........................................................(27)
Fault in solenoid valve, interruption or short-circuit to +UB:
⇒ Central solenoid valve, reservoir A *...............................................................................30
⇒ Valve RA [FA] left C *......................................................................................................31
⇒ Valve RA [FA] right B *....................................................................................................32
⇒ Valve FA [CA] left F * ......................................................................................................33
⇒ Valve FA [CA] right E *....................................................................................................34
⇒ Valve, primary current throttle ......................................................................................(49)
⇒ Valve, transverse throttle D *........................................................................................ (71)
[ ] For the forebody of articulated buses the data in the square brackets apply.
( ) For vehicles with this equipment.
*The letter is on the corrugated tube of the relevant valve.
SD 206-2.97
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Page 24
Type of faultFlashcode
Relay, door release:
⇒ Interruption or short-circuit to +UB ...............................................................................(36)
⇒ Short-circuit to earth..................................................................................................... (46)
Plausibility fault (mechanical fault) during raising:
⇒ Displacement sensor rear [front] right .............................................................................50
⇒ Displacement sensor rear [front] left ...............................................................................51
⇒ Displacement sensor front [centre]..................................................................................52
Plausibility fault (mechanical fault) during lowering:
⇒ Displacement sensor rear [front] right .............................................................................60
⇒ Displacement sensor rear [front] left ...............................................................................61
⇒ Displacement sensor front [centre]..................................................................................62
Control unit defective ...........................................................................................................80
Speed signal interruption or short-circuit to +UB .................................................................81
[ ] For the forebodies of articulated buses the data in square brackets apply.
( ) For vehicles with this equipment.
*The letter is on the corrugated tube of the relevant valve.
SD 206-2.97
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Page 25
Door control system IFE
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press button for > 2 seconds
Duration of a ten...............................................................................................approx. 2 s
Duration of a unit..............................................................................................approx. 0.5 s
Pause between a ten and a unit.......................................................................approx. 3 s
Pause between a unit and a unit......................................................................approx. 1 s
Example of flashcode: Fault code 11
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 2 seconds
Type of faultFlashcode
Break in connecting cable from door motor ...........................................................................1
Inward-swinging door: more than 10 seconds to reach fully open position..........................*2
Slide-glide door: limit switch reports door closed, door displacement
Door does not unlock within 3 seconds..................................................................................3
Inward-swinging door: more than 10 seconds to reach fully closed position ....................... *4
Slide-glide door: fault in door displacement sensor.............................................................*4
Door monitoring in opening direction responded 3x during opening......................................5
Motor current monitor responded at 5 closing procedures in succession..............................6
Short-circuit at one output of door control system..................................................................7
Fault in pressure wave switch (responded continuously for more than 1 minute)..................8
Fault in electronic eye (responded continuously for more than 1 minute)..............................9
Fault in door opening button (actuated continuously for more than 1 minute)......................10
Fault in driver’s button (actuated continuously for more than 1 minute)...............................11
* Slide-glide door and inward-swinging door have the same fault code number
Flashcodes 1, 2, 3 and 4 lead to switch-off of door motor.
on
off
SD 206-2.97
Page 25 of
62
Page 26
ECAS air suspension for trucks
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press button for > 2 seconds
Emission of the flashcode begins after 3 seconds. After emission of the first fault further
emission is automatically interrupted. For the next fault the button must be pressed again for
at least 2 seconds.
Duration of a unit..............................................................................................approx. 0.5 s
Duration of a ten...............................................................................................approx. 2 s
Pause between a ten and a unit.......................................................................approx. 3 s
Pause between a unit and a unit......................................................................approx. 1 s
Pause between a ten and a ten........................................................................approx. 1 s
Example of flashcode: Fault code 12
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after at least 2 and at most 4 seconds
Connection diagram for request button
on
off
X201X203
SD 206-2.97
Page 26 of
62
X203
Page 27
Type of faultFlashcode
Control unit defective
Cumulative test fault in calibration data (recalibrate displacement sensors)...................2 ............. 2
Control unit defective.......................................................................................................3 ............. 3
Control unit defective.......................................................................................................4 ............. 4
Control unit defective.......................................................................................................5 ............. 5
Control unit defective.......................................................................................................6 ............. 6
Control unit defective....................................................................................................... - ............ *7
EFR running-gear control for trucks
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press button for > seconds
Emission of the flashcode begins after 3 seconds. After emission of the first fault further
emission in automatically interrupted. For the next fault the button must be pressed again for
at least 2 seconds.
Duration of a unit..............................................................................................approx. 0.5 s
Duration of a ten...............................................................................................approx. 2 s
Pause between a ten and a unit.......................................................................approx. 3 s
Pause between a unit and a unit......................................................................approx. 1 s
Pause between a ten and a ten........................................................................approx. 1 s
Example of flashcode: Fault code 12
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after at least 2 and at most 4 seconds.
Connection diagram for request button
on
off
SD 206-2.97
Page 28 of
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62
Page 29
Type of faultFlashcode
Control unit defective .............................................................................................................1
Cumulative test error in calibration data, recalibrate displacement sensors..........................2
Control unit defective .............................................................................................................3
Control unit defective .............................................................................................................4
Control unit defective .............................................................................................................5
Control unit defective .............................................................................................................6
Cumulative test error in calibration data, recalibrate pressure sensors.................................8
Valve relay or ECAS fuse, terminal 30, defective ..................................................................9
Sensor fault, interruption or short-circuit to +UB:
Control unit defective ...........................................................................................................80
Speed signals, interruption or short-circuit to +UB...............................................................81
Electronics 4x2, 6x2
SD 206-2.97
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Page 31
WEBASTO auxiliary heater Airtop 2000
Reading out the fault memory
− The fault is shown automatically in the display when it occurs.
The faults are shown in the display of the control box. Only one fault can be displayed. If
more than one fault is present, the next fault will not be shown in the display until after the
first fault has been rectified.
Erasing the fault memory
− After repairs switch off the heater, wait for after-running and switch heater on again. The
fault will be erased automatically.
Type of faultFlashcode
No start, after 2 attempts to start...................................................................................... F 01
Flame interrupted, more than 5x within one heating cycle............................................... F 02
Under/overvoltage............................................................................................................ F 03
Premature flame recognition............................................................................................ F 04
Flame monitor, interruption or short-circuit ...................................................................... F 05
Temperature sensor for heater, interruption or short-circuit............................................. F 06
Metering pump, short-circuit............................................................................................. F 07
Blower motor, interruption/short-circuit or defective speed.............................................. F 08
Glow plug, interruption or short-circuit ............................................................................. F 09
Overheating...................................................................................................................... F 10
SD 206-2.97
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Page 32
Eberspächer auxiliary heater D1LCC/D3LCC
Reading out the fault memory
− Switch off the auxiliary heater
− Switch on auxiliary heater with button
− Press button
The last fault to occur will be shown in the display, e.g.: AF:64
With buttons
F:13.
Erasing the fault memory
− Switch off the auxiliary heater-
− Switch on auxiliary heater with button
− Press button
− Open the 1-pole plug connection X 683, which is at the plug connection between wiring
harness and control box.
− Press buttons and simultaneously and close plug connection X 683.
Type of faultFault code
No fault present............................................................................................................... (0)00
Control unit, chamber 1, to relay for fresh-air blower, short-circuit
to earth or control unit defective...................................................................................... (0)04
Control unit, chamber 2, to relay for electrical isolator switch or input for
anti-theft system, short-circuit to earth or control unit defective...................................... (0)05
TRS switch-off due to signal change from plus to minus at control unit,
chamber 10, or plus at control unit, chamber 12............................................................. (0)09
Voltage between control unit chamber 5 and chamber 11:
⇒ Overvoltage > 31.8 V (30.4 V if glow plug switched on).............................................(0)10
⇒ Undervoltage < 21 V (19 V if glow plug switched on).................................................(0)11
Connection between control unit and overheating sensor: no continuity.........................(0)12
Overtemperature in flame sensor > 340° C or > 2270 Ω ............................................... (0)13
To many overheatings, control unit locked......................................................................(0)15
Check glow plug (approx. 1 Ω to 2 Ω), control units chambers 6 and 9
to glow plug, interruption or control unit defective........................................................... (0)20
Glow plug or control unit, chamber 6, to glow plug: short-circuit
or control unit defective...................................................................................................(0)21
If the fault code is read out with an Eberspächer diagnosis unit, it has 3 digits
(e.g. 021). If it is read out with the module clock, it has only 2 digits (e.g. 21).
and with 2 seconds also press button .
and a further four faults, if present, can be read out. E.g.: F:10,
and within 2 seconds also press button .
.
.
SD 206-2.97
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Page 33
Type of faultFault code
Control unit, chamber 4, to connection plug for module clock:
short-circuit to plus..........................................................................................................(0)25
Burner motor or speed control defective: speed discrepancy.........................................(0)33
Metering pump or control unit, chamber 3, to metering pump:
⇒ Internal temperature sensor defective........................................................................(0)96
⇒ Oscillator or undervoltage fault...................................................................................(0)97
If the fault code is read out with an Eberspächer diagnosis unit, it has 3 digits
(e.g. 021). If it is read out with the module clock, it has only 2 digits (e.g. 21).
SD 206-2.97
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DREIHA control box
Reading out the fault memory
− Switch on ignition
− Press buttons
After 3 seconds the flashcode is emitted via the check lamp
fault code the display is automatically interrupted. For the next fault code buttons
2
must be pressed again for at least 2 seconds.
Erasing the fault memory
− Switch off ignition
− Press buttons
− Switch on ignition and release buttons
Dark phase before emission ............................................................................approx. 3 s
Duration of a ten...............................................................................................approx. 2 s
Duration of a unit..............................................................................................approx. 0.5 s
Pause between a ten and a ten........................................................................approx. 1 s
Pause between a ten and a unit.......................................................................approx. 3 s
Pause between a unit and a unit......................................................................approx. 1 S
Example of flashcode: Fault code 12
1
and 2 simultaneously for > 2 seconds
3
1
and 2 simultaneously and keep them pressed
1
and 2 after 2 seconds
3
. After emission of the first
1
2
1
and
Lamp 3 in
control box
SD 206-2.97
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62
Page 35
Type of faultFlashcode
Valve: (check cabling to heater or drive in heater)
⇒ V short-circuit..................................................................................................................43
⇒ V interruption...................................................................................................................44
⇒ W short-circuit.................................................................................................................45
⇒ W interruption..................................................................................................................46
⇒ X short-circuit...................................................................................................................47
⇒ X interruption...................................................................................................................48
⇒ Y short-circuit...................................................................................................................49
⇒ Y interruption...................................................................................................................51
⇒ Z short-circuit...................................................................................................................52
⇒ Z interruption ...................................................................................................................53
Fault in memory (change control box)..................................................................................54
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BEHR air-conditioner
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press button for at least 2 seconds
When the first fault code has been emitted display of further codes will be automatically interrupted. for the next fault code the button must be pressed again for at least 2 seconds.
Duration of a ten...............................................................................................approx. 2 s
Duration of a unit..............................................................................................approx. 0.5 s
Pause between a ten and a unit.......................................................................approx. 3 s
Pause between a unit and a unit......................................................................approx. 1 s
Pause between a ten and a ten........................................................................approx. 1 s
Pause before emission of flashcode................................................................approx. 3 s
Example of flashcode:Fault code 13
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 2 seconds
on
off
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Type of faultFlashcode
Temperature sensor:
⇒ Interior (IF): short-circuit to earth.......................................................................................1
⇒ Interior (IF): short-circuit to +UB or interruption.................................................................2
⇒ Exterior (AF): short-circuit to earth ....................................................................................3
⇒ Exterior (AF): short-circuit to +UB or interruption ..............................................................4
⇒ Heat exchanger (TF): short-circuit to earth........................................................................5
⇒ Heat exchanger (TF):short-circuit to +UB or interruption...................................................6
⇒ Evaporator (VF): short-circuit to earth...............................................................................7
⇒ Evaporator (VF): short-circuit to +UB or interruption.........................................................8
Compressor coupling: short-circuit to earth, +UB or interruption...........................................9
Water clock valve: short-circuit to earth or interruption........................................................11
Water clock valve: short-circuit to +UB................................................................................12
Blower relay: short-circuit to earth or interruption ..............................................................*13
Blower relay: short-circuit to +UB....................................................................................... *14
Coding not stored in control unit...........................................................................................15
Coding stored does not correspond to the components dependent on the
control unit............................................................................................................................16
* For air-conditioner only
Connection diagram for request button
X201X204
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Page 38
WABCO ATC (Automatic Temperature Control) heater/air-conditioner control
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press button for at least 2 seconds
When the first fault code has been emitted, display of further fault codes will be automatically interrupted. For further codes the button must be pressed again for at least 2 seconds.
Duration of a ten...............................................................................................approx. 2 s
Duration of a unit..............................................................................................approx. 0.5 s
Pause between a ten and a ten........................................................................approx. 1 s
Pause between a ten and a unit.......................................................................approx. 3 s
Pause between a unit and a unit......................................................................approx. 1 s
Pause before flashcode emission....................................................................approx. 3 s
Example of flashcode: Fault code 13
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition
− Release button after > 2 seconds an < 4 seconds
on
off
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Type of faultFlashcode
Control unit defective (cumulative test fault, fan curves)........................................................1
Control unit defective (cumulative test fault, setting data)......................................................2
Spec. temperature transmitter, short-circuit to +UBatt...........................................................3
Spec. temperature transmitter, short-circuit to earth/interruption in cable..............................4
Temperature sensor:
⇒ Evaporator, short-circuit to +UBatt ....................................................................................6
⇒ Evaporator, short-circuit to earth.......................................................................................7
⇒ evaporator, interruption in cable........................................................................................8
⇒ Inside air, short-circuit to +UBatt .......................................................................................9
⇒ Inside air, short-circuit to earth........................................................................................10
⇒ Inside air, interruption in cable ........................................................................................11
⇒ Air outlet, short-circuit to +UBatt .....................................................................................12
⇒ Air outlet, short-circuit to earth ........................................................................................13
⇒ Air outlet, interruption in cable.........................................................................................14
⇒ External air, short-circuit to +UBatt..................................................................................15
⇒ External air, short-circuit to earth.....................................................................................16
⇒ External air, interruption in cable.....................................................................................17
Gearbox in neutral signal missing / Gear engaged signal does not drop out.......................61
Gear engaged signal:
⇒ Missing during shifting.....................................................................................................62
⇒ Missing without shifting ...................................................................................................63
Group engaged signal does not drop out if group is engaged,
or drops out and is no longer present...................................................................................64
Group engaged signal drops out without shifting and is no longer present..........................65
Overrevving during gearshift................................................................................................66
Gear engaged signal and gearbox in neutral signals present simultaneously.....................67
Voltage from actual value transmitter (B138) or duty factor of PWM interface:
⇒ too low (cable 74502)......................................................................................................71
⇒ too high (cable 74502).....................................................................................................72
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Type of faultDisplay
Supply voltage from actual value transmitter (B138):
⇒ too low.............................................................................................................................73
⇒ too high............................................................................................................................74
Battery voltage:
⇒ too low.............................................................................................................................75
⇒ too high............................................................................................................................76
Signal from speed pickup (B135) faulty ...............................................................................77
Signal from tachograph missing...........................................................................................78
Fault in stalk switch (S157) / pre-selector switch (S171) .....................................................81
Cable 40502 to display (A145) disturbed.............................................................................82
Short-circuit to earth (more detailed analysis not possible) .................................................83
Mechanical defect in gearbox/wrong control unit.................................................................84
Substitute driving program has been activated....................................................................88
Control unit defective ...........................................................................................................91
Control unit defective ...........................................................................................................92
Control unit defective ...........................................................................................................93
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Page 42
RENK DOROMAT
Reading out the fault memory
− Switch off ignition and set gearbox to neutral
− Connect up request button
− Switch on ignition and press button for > 2.5 seconds
The fault codes are emitted only via the gearbox oil temperature check lamp.
If no fault has been stored, the gearbox oil temperature check lamp goes out after the lamp
test and remains out.
If a fault has been stored, the fault code will be emitted 6 seconds after the lamp test. The
display is interrupted automatically after the first fault code. For further fault codes the button must be pressed again for > 2.5 seconds.
Duration of a ten...............................................................................................approx. 2 s
Duration of a unit..............................................................................................approx. 0.5 s
Dark period between a ten and a unit..............................................................approx. 3 s
Dark period between a unit and a unit..............................................................approx. 1 s
Dark period between a ten and a ten...............................................................approx. 1 s
Example of flashcode: Fault code 13
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 2 seconds
on
off
2.5 seconds
(lamp test)
SD 206-2.97
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Type of faultFlashcode
1st gear solenoid defective, cable or output stage.................................................................1
2nd gear solenoid defective, cable or output stage................................................................2
3rd gear solenoid defective, cable or output stage ................................................................3
4th gear solenoid defective, cable or output stage.................................................................4
Reverse gear solenoid defective, cable or output stage........................................................5
Converter solenoid defective, cable or output stage..............................................................6
Gearbox PTO defective, cable or output stage......................................................................7
Modulation solenoid 1 defective cable or output stage..........................................................9
Neutral solenoid defective, cable or output stage................................................................11
Drive pickup (engine speed) defective, cable, output stage or earth fault in pickup............12
Output pickup (road speed) defective, cable, output stage or earth fault in pickup..............13
Engine brake defective, cable or output stage.....................................................................14
Temperature lamp defective cable or output stage..............................................................15
Starter interlock defective, cable or output stage.................................................................16
Locking solenoid defective, cable or output stage ...............................................................17
Modulation solenoid 2 defective, cable or output stage.......................................................18
Connection diagram for request button
X201X211
SD 206-2.97
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Page 44
SAMT B
Reading out the fault memory
− Switch off ignition, set gearbox to neutral, do not depress the clutch
− Switch on ignition
− Move gearshift lever to downshift position and hold it there
− Briefly switch ignition off and on again (once only)
− Read off fault codes at gear display, thereby keeping the gearshift lever in the downshift
position. A buzzer sounds after the last fault code and the display switches back to neutral
− Release gearshift lever
Erasing the fault memory
− Switch off ignition and set gearbox to neutral. Do not depress the clutch
− Switch on ignition
− Move gearshift lever to downshift position and hold it there
− Briefly switch ignition off and on again twice
− When the fault memory has been erased a buzzer briefly sounds and "00" appears briefly
in the display. After this the display returns to neutral
− Release gearshift lever
Type of faultFlashcode
Relay for power supply K314:
⇒ Short-circuit in coil to earth.............................................................................................A0
⇒ Interruption in coil or short-circuit to +UBatt ...................................................................A1
Battery voltage too high ......................................................................................................A2
Battery voltage too low........................................................................................................ A3
"Ignition on" signal missing .................................................................................................A4
Voltage at XY switch unit too high.......................................................................................A5
Voltage at XY switch unit too low........................................................................................A6
Voltage supply for gearshift lever: short-circuit................................................................... A7
Voltage supply for gear display, short-circuit ......................................................................A8
⇒ Interruption or short-circuit to +UBatt .............................................................................U1
Reservoir air pressure to gearbox too low ..........................................................................U2
Position of gearshift lever illogical; up- and downshift requested
simultaneously at SAMT control unit in cab or short-circuit to +UBatt ...............................U3
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VOITH DIWA.3
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press button for > 2 seconds
Emission of the flashcode begins after 3 seconds. When the first fault code has been emitted emission of further codes is automatically interrupted. For the next fault the button must
be pressed again for at least 2 seconds.
Duration of a flash............................................................................................approx. 0.5 s
Pause between a hundred and a hundred........................................................approx. 1 s
Pause between a hundred and a ten................................................................approx. 3 s
Pause between a ten and a ten........................................................................approx. 1 s
Pause between a ten and a unit......................................................................approx. 3 s
Pause between a unit and a unit......................................................................approx. 1 s
Example of flashcode: Fault code 221
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 2 seconds
Control pressure.................................................................................................................499
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Voith-Retarder
Reading out the fault memory
− Retarder step switch in zero position. Switch off ignition and connect up request button
− Switch on ignition
− Press button for > 2 seconds
When the first fault code has been emitted, emission of further codes will be automatically
interrupted. For the next fault the button must be pressed again for at least 2 seconds.
Duration of a ten...............................................................................................approx. 2 s
Duration of a unit..............................................................................................approx. 1 s
Dark phase.......................................................................................................approx. 1 s
Example of flashcode: Fault code 12
Lamp in
request
button
Erasing the fault memory
− Retarder step switch in zero position. 0, Switch off ignition and connect up request button.
− Press button and keep it pressed
− Switch on ignition and release button after >2 seconds.
Connection diagram for request button
on
off
SD 206-2.97
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Page 49
Type of faultFlashcode
Relay, retarder operation in stages, short-circuit to earth......................................................1
Output, relay for speed reduction, short-circuit to +UBatt......................................................2
Engine brake relay, short-circuit to earth ...............................................................................3
LED output in stage switch, short-circuit to earth...................................................................4
Internal fault relating to safety module.................................................................................29
Data record / parameters, faulty coding...............................................................................31
Retarder operation lamp:
⇒ Interruption or short-circuit to earth .................................................................................32
⇒ Short-circuit to UBatt .......................................................................................................33
Engine speed signal missing................................................................................................34
Internal fault relating to ROM / EEPROM.............................................................................35
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ZF-Retarder (Intarder)
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press request button for > 2 seconds
The flashcode is emitted after 3 seconds. After the first fault code emission of further codes
is automatically interrupted. For the next fault code the button must be pressed again for at
least 2 seconds.
Duration of a ten...............................................................................................approx. 2 s
Duration of a unit..............................................................................................approx. 1 s
Dark phase between a ten and a unit...............................................................approx. 2 s
Dark phase between a unit and a unit..............................................................approx. 1 s
Dark phase between a ten and a ten................................................................approx. 1 s
Example of flashcode: Fault code 22
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 2 seconds
Overvoltage in vehicle electrics > +38Volt...........................................................................99
Connection diagram for request button
X201X207X207
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Page 52
ZF HP500
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press request button for > seconds
If no fault has been stored, the lamp goes out when the button is pressed. If a fault is present, emission of the flashcode begins after 3 seconds. After emission of the first fault code
emission is automatically interrupted. For the next fault code the button must be pressed
again for at least 2 seconds.
Duration of a ten...............................................................................................approx. 2 s
Duration of a unit..............................................................................................approx. 1 s
Dark phase between a ten and a unit...............................................................approx. 2 s
Dark phase between a unit and a unit..............................................................approx. 1 s
Dark phase between a ten and a ten................................................................approx. 1 s
Example of flashcode: Fault code 23
X201
on
off
X211X211
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 3 seconds
Speed signal (signal fault)....................................................................................................13
Control unit trigger to solenoid valve, engine stop is interrupted .........................................14
Connection diagram for request button
X210X210X201X70
SD 206-2.97
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EDC M7
Reading out the fault memory
− Switch off ignition and connect up request button
− Diagram A for control units up to end of 990 (290/300/330 hp)
− Diagram B for control unit from 1991 onwards (320/420 hp)
− Remove feet from clutch and brake pedals (otherwise the fault code will be erased)
− Switch on ignition
− Press button for > 2 seconds
After emission of the first fault code further emission is automatically interrupted. For the
further fault codes the button must be pressed again for at least 2 seconds.
Example of flashcode: Fault code 5
Lamp in
request
button
Erasing the fault memory (290/300/330 hp with control units up to end of 1990)
− Switch off ignition and connect up request button in accordance with
diagram (A)
− Switch on ignition
− Press request button and at the same time actuate clutch or brake pedal
Erasing the fault memory (320/420 hp with control units from 1991 onwards)
− Switch off ignition and connect up request button in accordance with diagram (B)
− Press button and keep it pressed
− Switch on ignition
− Release button after > 3 seconds
on
off
SD 206-2.97
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Page 57
Type of fault Flashcode
Pedal value transmitter defective...........................................................................................1
Fuel temperature sensor (only for 290/300/330 hp)...............................................................2
Charge air temperature sensor..............................................................................................3
System speed pickup in mechanism......................................................................................4
Control rod travel pickup in mechanism.................................................................................6
Coolant temperature sensor...................................................................................................7
Road speed pickup: no signal or fault in signal......................................................................8
Idling switch in pedal value transmitter faulty (with 320/420 hp only) ....................................9
Quantity mechanism, system deviation................................................................................10
Not occupied........................................................................................................................11
Not occupied........................................................................................................................12
Control unit defective ...........................................................................................................13
Auxiliary speed sensor: no signal (terminal W))...................................................................14
Control unit defective ...........................................................................................................15
Connection diagram for request button:
AB
X116X210X201
SD 206-2.97
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Page 58
EDC MS5
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition
− Press button for > seconds
After emission of the first fault code further emission is automatically interrupted. For further
fault codes the button must be pressed again for at least 2 seconds.
Pause before first emission..............................................................................approx. 3 s
Duration of a long flash....................................................................................approx. 2 s
Duration of a short flash...................................................................................approx. 0.5 s
Pause between two short flashes.....................................................................approx. 0.5 s
Pause between a long and a short flash..........................................................approx. 5 s
Pause between two long flashes......................................................................approx. 1 s
Example of flashcode: Fault code, 1x long, 4x short
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition
− Release button after > 2.5 seconds and < 10 seconds
Connection diagram for request button
on
off
X210X210X201
SD 206-2.97
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Page 59
Type of fault Please observe SI 97 04 22/2 Flashcode
Pedal value transmitter...........................................................................................-.............1
Charge air temperature sensor...............................................................................-.............3
VDO speed limiter AGB-S
Reading out the fault memory
− Switch off ignition and connect up request button
− Switch on ignition and wait for 2 seconds
− Press button for > 2 seconds
Emission is automatically interrupted after emission of the first fault code. For further fault
codes the button must be pressed again for at least 2 seconds.
Dark phase before emission ............................................................................approx. 3 s
Duration of long flash.......................................................................................approx. 2 s
Duration of short flash......................................................................................approx. 0.5 s
Pause between a long and a short flash..........................................................approx. 3 s
Pause between two short flashes.....................................................................approx. 1 s
Pause between two long flashes......................................................................approx. 1 s
Example of flashcode: Fault code 1x long and 2x short flashes
Lamp in
request
button
Erasing the fault memory
− Switch off ignition and connect up request button
− Press button and keep it pressed
− Switch on ignition and release button after > 2 seconds
on
off
SD 206-2.97
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Page 61
Type of faultFlashcode
Clutch switch, if present.............................................................................................1 .........2
Road speed signal, cable, short-circuit to earth or cable
capacity too high........................................................................................................2 .........2
Road speed signal, cable open or short-circuit to +UB or signal fault .......................2 .........4