A.GENERAL INFORMATION |
GENERAL INFORMATION |
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MAINTENANCE |
B.ENGINE |
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ENGINE |
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ENGINE MECHANICAL |
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INTAKE SYSTEM |
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EXHAUST SYSTEM |
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LUBRICATION SYSTEM |
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COOLING SYSTEM |
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FUEL SYSTEM |
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ENGINE CONTROL SYSTEM |
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EMISSION CONTROL SYSTEM |
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IGNITION SYSTEM |
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STARTING SYSTEM/CHARGING SYSTEM |
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ENGINE MOUNTING |
C.SUSPENSION |
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FRONT SUSPENSION |
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REAR SUSPENSION |
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WHEEL & TIRE |
D.DRIVELINE/AXLE |
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DRIVE SHAFT/PROPELLER SHAFT/AXLE |
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E.BRAKE |
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BRAKE |
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PARKING BRAKE |
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BRAKE CONTROL |
F.TRANSMISSION/ |
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CLUTCH |
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TRANSAXLE |
MANUAL TRANSMISSION/MANUAL TRANSAXLE |
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AUTOMATIC TRANSMISSION/AUTOMATIC TRANSAXLE |
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TRANSMISSION CONTROL |
A1
A2
B1
B2
B3
B4
B5
B6
B7
B8
B9
B1
B1
B1
C1
C2
C3
D2
E1
E2
E3
F1
F2
F3
F5
G.STEERING |
STEERING |
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POWER STEERING |
H.SRS AIRBAG |
SRS AIRBAG SYSTEM |
I.BODY |
BODY |
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EXTERIOR/INTERIOR |
WINDSHIELD WINDOWGLASS/MIRROR
DOOR LOCK & THEFT DETERRENT
J.BODY ELECTRICAL SYSTEM |
LIGHTING |
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WIPER & WASHER |
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METER |
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AUDIO & VISUAL SYSTEM |
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WIRING |
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OTHER ELECTRICAL PARTS |
K.HEATER AND AIR CONDITIONER |
HEATER & AIR CONDITIONER |
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L.VEHICLE COMMUNICATIONS |
MULTIPLEX COMMUNICATION SYSTEM |
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G1
G2
H1
I1
I2
I3
I4
J1
J2
J3
J4
J5
J6
K1
L2
TO INDEX
L2 MULTIPLEX COMMUNICATION SYSTEM
CAN COMMUNICATION SYSTEM ------------ |
L2 - 1 |
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CAN COMMUNICATION SYSTEM -------- |
L2 - 1 |
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ARTICLES TO BE PREPARED---------- |
L2 - 1 |
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HANDLING INSTRUCTIONS OF |
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CONTROL SYSTEM------------------------ |
L2 - 1 |
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SYSTEM WIRING DIAGRAM ------------ |
L2 - 3 |
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ARRANGEMENT OF ECU |
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TERMINAL ------------------------------------ |
L2 - 4 |
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ARRANGEMENT OF VEHICLE |
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HARNESS SIDE CONNECTOR |
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TERMINALS ---------------------------------- |
L2 - 7 |
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LOCATION OF COMPONENTS--------- |
L2 - 8 |
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HOW TO PROCEED WITH |
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TROUBLE SHOOTING -------------------- |
L2 - 9 |
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INQUIRY ------------------------------------- |
L2 - 10 |
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CONFIRMATION, RECORD AND |
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ERASURE OF DIAGNOSIS CODE --- |
L2 - 11 |
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BASIC CHECK ----------------------------- |
L2 - 14 |
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TROUBLE SHOOTING ACCORDING |
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TO DIAGNOSIS CODE------------------- |
L2 - 20 |
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LIN COMMUNICATION SYSTEM ------------ |
L2 - 38 |
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LIN COMMUNICATION SYSTEM -------- |
L2 - 38 |
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ARTICLES TO BE PREPARED |
L2 - 38 |
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L2 |
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SYSTEM WIRING DIAGRAM ---------- |
L2 - 38 |
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ARRANGEMENT OF ECU |
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TERMINAL----------------------------------- |
L2 - 39 |
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ARRANGEMENT OF VEHICLE |
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HARNESS SIDE CONNECTOR |
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TERMINALS--------------------------------- |
L2 - 40 |
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LOCATION OF COMPONENTS ------- |
L2 - 41 |
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HOW TO PROCEED WITH |
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TROUBLE SHOOTING------------------- |
L2 - 41 |
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INQUIRY ------------------------------------- |
L2 - 42 |
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CONFIRMATION, RECORD AND |
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ERASURE OF DIAGNOSIS CODE --- |
L2 - 42 |
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TROUBLE SHOOTING ACCORDING |
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TO DIAGNOSIS CODE------------------- |
L2 - 45 |
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L2–1
Ä CAN COMMUNICATION SYSTEM
1 CAN COMMUNICATION SYSTEM
1-1 ARTICLES TO BE PREPARED
SST
Shape |
Part No. |
Part name |
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09991-87403-000 |
Wire,diagnosis check |
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09991-87404-000 |
Wire,engine control system inspection |
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(09991-87401-000) |
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Instrument
Electrical Tester
1-2 HANDLING INSTRUCTIONS OF CONTROL SYSTEM
1-2-1 MAINTENANCE INSTRUCTION
1.Pay attention to the following points when performing checking and maintenance of the CAN.
CAUTION
•When repairing the communication failure, perform repairing without disconnecting the negative terminal of the battery until the checking of the connection condition of the connector is finished.
•When disconnecting the negative terminal of the battery, record all of the diagnosis codes memorized.
•When performing checking and repairing of the CAN line, perform the operation after discharging the static electricity charged in the body.
•When measuring the resistance value of the CAN line, turn IG switch to "LOCK".
•There is a risk of damaging the ECU if the terminals are mistaken, when measuring the resistance within the CAN line and ECU.
•When measuring the resistance within the ECU, do not apply voltage of 7.0V or above to the measuring terminals.
•Perform measurements swiftly.
1-2-2 PRECAUTIONS DURING HARNESS REPAIR
1.Perform tape wind after soldering the repair section.
CAUTION
•Make sure that the bus (communication wire) is twisted when assembling. In so doing, do not make any gap between the CAN-H and CAN-L.
•Keep the difference of length of the CAN-H and CAN-L within 100 mm.
•Keep the fray of the twist of the connector connection within 80 mm.
•The pitch of the twist shall be set to 25mm&10mm.
Within 80mm |
25mm&10mm |
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B11H8003ET10 |
L2–2
2.Do not connect the bypass wiring of the repaired section.
CAUTION
•If bypass wiring is connected, the characteristic features of the twist line will be lost.
3.Generally, continuity check is performed by applying a tester from behind the connector.
Bypass connection line
T11E6261ET10
Tester probe
G07E5018ET10
L2–3
1-3 SYSTEM WIRING DIAGRAM
RHD vehicles
Combination meter |
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ECU IG2 |
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Ignition switch |
AM2 |
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(7.5A) |
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IG2 |
(30A) |
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Ignition switch |
AM1 |
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BACK UP |
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IG1 |
(50A) |
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+B 10 |
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(15A) |
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EFI ECU |
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Main relay |
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EFI(15A) |
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+B 27 |
4 |
2 |
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ECU |
F/L |
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IG1 |
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CANH |
1 |
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9 |
HCAN |
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MRO 39 |
3 |
1 |
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A/T ECU |
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(7.5A) |
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ABS actuator |
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CANL |
2 |
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8 |
LCAN |
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+B1 |
B3 |
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Battery |
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CANL |
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HCAN |
3 |
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6 |
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B19 LCN1 |
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18 |
GND LCAN |
4 |
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CANH |
7 |
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B9 |
HCN1 |
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+IG 20 |
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ECU-T 17 |
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E1 125 |
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B24 |
E1 |
CANH B10 |
17 HCAN |
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4 |
3 |
11 |
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CANL B20 |
19 LCAN |
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ECU-T |
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CANH |
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GND 14 |
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CANL |
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DLC |
M/T vehicles |
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CANL |
6 |
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19 LCAN |
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CANH |
7 |
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17 HCAN |
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E1 |
125 |
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GND 14 |
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EFI ECU |
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ABS actuator |
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T11E6507ES20 |
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LHD vehicles
EFI ECU |
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Main relay |
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EFI(15A) |
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+B 27 |
4 |
2 |
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BACK UP |
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MRO 39 |
3 |
1 |
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(15A) |
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Combination meter |
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ECU IG2 |
IG switch |
AM2 |
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(7.5A) |
IG2 |
(30A) |
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IG switch |
AM1 |
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+B 10 |
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IG1 |
(50A) |
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CANH |
7 |
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3 |
HCAN |
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ECU |
F/L |
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CANL |
6 |
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4 |
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IG1 |
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LCAN |
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A/T ECU |
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(7.5A) |
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ABS actuator |
Battery |
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+B1 B3 |
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CANL |
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2 |
B19 LCN1 |
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125 E1 |
HCAN |
9 |
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17 |
ECU-T |
CANH |
1 |
B9 |
HCN1 |
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+IG 20 |
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LCAN |
8 |
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B24 |
E1 |
CANH B10 |
17 HCAN |
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3 |
11 |
4 |
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GND 18 |
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CANL B20 |
19 LCAN |
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CANL |
ECU-T |
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GND 14 |
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CANH |
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DLC |
M/T vehicles |
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CANL |
2 |
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19 LCAN |
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CANH |
1 |
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17 HCAN |
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GND 18 |
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GND 14 |
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Combination meter |
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ABS actuator |
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T11E6509ES20 |
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L2–4
1-4 ARRANGEMENT OF ECU TERMINAL
DLC terminal arrangement diagram
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
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8 |
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9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
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T11E6254S10 |
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Terminal No. |
Terminal code |
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Terminal name |
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3 |
CANL |
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CAN communication LO |
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11 |
CANH |
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CAN communication HI |
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Combination meter side terminal arrangement diagram
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20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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40 |
39 |
38 |
37 |
36 |
35 |
34 |
33 |
32 |
31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
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T11H6013S10
Terminal No |
Terminal code |
Terminal name |
1 |
CANH |
CAN communication HI (1) |
2 |
CANL |
CAN communication LO (1) |
3 |
HCAN |
CAN communication HI (2) |
4 |
LCAN |
CAN communication LO (2) |
10 |
'B |
'B power supply |
18 |
GND |
Earth |
L2–5
EFI ECU side terminal arrangement diagram
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27 |
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26 |
25 |
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24 |
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23 |
22 |
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21 |
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20 |
19 |
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18 |
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17 |
16 |
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15 |
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14 |
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13 |
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12 |
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11 |
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10 |
9 |
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8 |
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7 |
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6 |
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5 |
4 |
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3 |
2 |
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1 |
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69 |
68 |
67 |
66 |
65 |
64 |
63 |
62 |
61 |
60 |
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59 |
58 |
57 |
56 |
55 |
54 |
53 |
52 |
51 |
50 |
49 |
48 |
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47 |
46 |
45 |
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44 |
43 |
42 |
41 |
40 |
39 |
38 |
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37 |
36 |
35 |
34 |
33 |
32 |
31 |
30 |
29 |
28 |
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106 |
105 |
104 |
103 |
102 |
101 |
100 |
99 |
98 |
97 |
|
96 |
95 |
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94 |
93 |
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92 |
91 |
90 |
89 |
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88 |
87 |
86 |
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85 |
84 |
83 |
82 |
81 |
80 |
79 |
78 |
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77 |
76 |
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75 |
74 |
73 |
72 |
71 |
70 |
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135 |
134 |
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133 |
132 |
131 |
130 |
129 |
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128127 |
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126 |
125 |
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124 |
123 |
122 |
121 |
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120 |
119 |
118 |
117 |
116 |
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115 |
114 |
113 |
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112 |
111 |
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110 |
109 |
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108 |
107 |
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H11E6091S10
|
Terminal No |
|
Terminal code |
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Terminal name |
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||||||||||||||||||||||||
|
6 |
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|
CANL |
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|
CAN communication LO (1) |
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||||||||||||||||||||||||||
|
7 |
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CANH |
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CAN communication HI (1) |
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|||||||||||||||||||||||||
|
8 |
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LCAN |
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CAN communication LO (2) |
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|
||||||||||||||||||||||||||
|
9 |
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HCAN |
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|
CAN communication HI (2) |
|
|
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|
|
|||||||||||||||||||||||||
|
27 |
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'B |
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EFI ECU power supply |
|
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|
|||||||||||||||||||||
|
125 |
|
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E1 |
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Computing system earth |
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||||||||||||||||||||
A/T ECU side terminal arrangement diagram |
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|
10 |
|
9 |
8 |
7 |
|
6 |
|
5 |
4 |
3 |
2 |
1 |
|
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|
6 |
|
5 |
4 |
|
3 |
2 |
|
1 |
|
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6 |
5 |
|
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4 |
|
3 |
|
2 |
|
1 |
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||||||||||||||||
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22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
|
|
|
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
|
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|
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
|
9 |
8 |
|
7 |
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|||||||||||||||||
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||||
|
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30 |
29 |
28 |
27 |
|
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|
26 |
25 |
24 |
23 |
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24 |
23 |
22 |
21 |
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20 |
19 |
18 |
17 |
|
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|
26 |
25 |
24 |
23 |
22 |
|
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21 |
20 |
19 |
18 |
|
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||||||||||
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|||||||||||||||||||||||||||||||||||
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||||
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||||
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A |
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B |
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C |
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|||||||
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|
T11K5006S10 |
|
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|
Terminal No |
|
|
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|
|
Terminal code |
|
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|
|
|
Terminal name |
|
|
|
|
|
|
|
|
|
|
||||||||||||||||||||
|
B3 |
|
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|
|
'B |
|
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|
|
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|
|
A/T ECU power supply |
|
|
|
|
|
|
|||||||||||||||||||||
|
B9 |
|
|
|
|
|
|
|
HCN1 |
|
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|
|
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|
|
CAN communication HI (1) |
|
|
|
|
|
|||||||||||||||||||||||||
|
B10 |
|
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|
|
CANH |
|
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|
CAN communication HI (2) |
|
|
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|
|
|||||||||||||||||||||||||
|
B19 |
|
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LCN1 |
|
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|
|
CAN communication LO (1) |
|
|
|
|
||||||||||||||||||||||||||
|
B20 |
|
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|
|
CANL |
|
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|
|
CAN communication LO (2) |
|
|
|
|
||||||||||||||||||||||||||
|
B24 |
|
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|
E1 |
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|
Sensor earth |
|
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|
|||||||||||
L2–6
ABS actuator side terminal arrangement diagram
|
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13 |
|
|
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
|
1 |
|
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||
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|||
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|
26 |
|
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|
14 |
|
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|
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
|
|
||||
|
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|
T11C5001S10 |
|
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|
Terminal No |
Terminal code |
|
|
|
|
|
|
|
|
|
|
Terminal name |
|||||||||
14 |
|
GND |
|
|
|
|
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|
|
|
|
Earth |
|||||||
17 |
|
HCAN |
|
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|
|
|
CAN communication HI |
|||||||||
19 |
|
LCAN |
|
|
|
|
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|
|
CAN communication LO |
|||||||||
20 |
|
'IG |
|
|
|
|
|
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|
|
|
|
IG power supply |
||||||||
L2–7
1-5 ARRANGEMENT OF VEHICLE HARNESS SIDE CONNECTOR TERMINALS
Combination meter connection vehicle harness side connector
|
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1 |
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T11E6255S10
EFI ECU connection vehicle harness side connector
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H11E6051S10
A/T ECU connection vehicle harness side connector
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B
T11E6253S10
ABS actuator connection vehicle harness side connector
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T11C5002S10
L2–8
1-6 LOCATION OF COMPONENTS
b |
d |
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a
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T11E1203S30 |
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Part name |
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a |
DLC |
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b |
Combination meter (meter ECU) |
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c |
Engine control computer (EFI ECU) |
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d |
Transmission control computer (A/T ECU) (A/T vehicles) |
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e |
ABS actuator (ABS ECU) (ABS-equipped vehicles) |
||
L2–9
1-7 HOW TO PROCEED WITH TROUBLE SHOOTING
1.This system incorporates diagnosis functions that will locate malfunctioning parts, thus providing a vital clue in trouble shooting.
è1. Bringing malfunctioning vehicle to workshop
çGo to è2.
è2. Diagnosis by interview
1.Gather enough information from the customer on conditions, environment, and phenomenon in which the malfunction took place.
çGo to è3.
è3. Normal operation confirmation of the diagnosis code indication of the LCD in meter
1.Use the SST to short-circuit the DLC terminals between 4(ECU-T) - 13(E).
SST: 09991-87403-000
SST: 09991-87404-000
2.Check that the meter LCD indicates the diagnosis code (including the normal codes).
SPECIFIED VALUE: It indicates.
NOTE
•It is fine even if the codes that are not related to CAN are outputted.
çIf it is OK, proceed to è4.
çIf it is NG, perform following checks of the meter. Replace the meter if there are no problems.
(1)Harness check between the meter - DLC and DLC - body earth.
(2)Meter power supply system and earth system check
è4. Confirmation and recording of diagnostic code of meter LCD (CAN related)
1.Check and record the CAN-related diagnostic code (codes 0051 - 0053) outputted on the meter LCD.
SPECIFIED VALUE: Codes 0051 - 0053 are not indicated.
çIf it is OK, proceed to è8. çIf it is NG, proceed to è5.
è5. Basic check
1.Perform basic check.
Refer to Page L2-14.
çProceed to è6.
è6. Reconfirmation of diagnosis code of meter LCD (CAN related)
1.Reconfirm the diagnosis codes (codes 0051 - 0053) related to CAN indicated in the meter LCD.
SPECIFIED VALUE: Codes 0051 - 0053 are not indicated.
çIf it is OK, proceed to è8. çIf it is NG, proceed to è7.
L2–10
è7. Trouble shooting according to diagnosis code
1.Perform troubleshooting for the outputted diagnostic code.
Refer to Page L2-20.
çGo to è8.
è8. Diagnosis code erasure
1.Erase the diagnosis code of the CAN communication employed system.
(1)Erasing procedures of diagnosis code of combination meter
(2)Erasing procedures of diagnosis code of EFI ECU
Refer to Page B8-36.
(3)Erasing procedures of diagnosis code of A/T ECU
Refer to Page F5-27.
(4)Erasing procedures of diagnosis code of ABS actuator
Refer to Page E3-20.
çProceed to è9.
è9. Reconfirmation of diagnosis code of meter LCD (CAN related)
1.Reconfirm the diagnosis codes (codes 0051 - 0053) related to CAN indicated in the meter LCD.
SPECIFIED VALUE: Codes 0051 - 0053 are not indicated.
çIf it is OK, proceed to è10.
çIf it is NG, proceed to è5 for a recheck.
è10. Confirmation test
1.Ensure that the problem that the customer described has been completely corrected and the operation is back to normal.
çIf it is OK, finish the trouble shooting.
çIn the case of NG, go back to è3 for a recheck.
1-8 INQUIRY
1.In an effort to remove causes for malfunction from the vehicle concerned, it is impossible to determine the cause without confirming the malfunction phenomenon. If the phenomenon is not confirmed, the vehicle may not be able to return to the normal conditions even if you continue your work. The diagnosis through interviews is to collect information from the customer before confirming the malfunction phenomena. The diagnosis through interviews provides very important clues in reproducing malfunction phenomena.
2.Since the information obtained by the diagnosis through interviews is referred to during the trouble shooting, it is imperative to make an inquiry of the customer, centering on the items related to the malfunction, instead of simply asking general questions.
L2–11
1-9 CONFIRMATION, RECORD AND ERASURE OF DIAGNOSIS CODE
1.The diagnostic code remains displayed as long as the communication failure exists, and will be erased when the communication is back to the normal state. It is necessary, therefore, to record diagnostic codes before removing the battery negative (-) terminal.
1-9-1 CHECKING METHOD OF DIAGNOSIS
1.Stop the vehicle.
2.Turn IG switch to "LOCK".
3.Short the terminals 4 (ECU-T) and 13 (E) of DLC, using SST.
SST: 09991-87403-000
SST: 09991-87404-000
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
DLC
T11S5020S16
CAUTION
• Do not mistake the connection position of the connectors since it may cause malfunction.
4.Turn ON the IG switch and read the diagnosis code indicated in figures on the meter LCD.
Normal time
Abnormal time
T11E6265ES16
L2–12
NOTE
•Other than the diagnosis codes related to the CAN communication system, diagnosis codes of the Immobilizer system, meter, LIN communication system are also indicated on the meter LCD.
•When plural codes are to be outputted, they are outputted, starting from a smaller code number. Furthermore, when one cycle of indications is completed, these codes are repeatedly outputted at intervals of four seconds.
L2–13
1-9-2 CANCELING METHOD OF DIAGNOSIS
1.There are following two ways to erase diagnostic codes.
(1)The communication error diagnosis code will be erased automatically when the communication problem has been solved.
(2)Turn the IG switch to "LOCK"
1-9-3 CONTENTS OF DIAGNOSIS
Code No. |
Warning indication |
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LCD |
4-digit |
(Provided: <, Not |
(Provided: <, Not |
Contents of diagnosis |
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provided: =) |
provided: =) |
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0 |
( |
= |
= |
Normal |
51 |
( |
= |
= |
Communication failure with EFI ECU |
52 |
( |
= |
= |
Communication failure with A/T ECU |
53 |
( |
= |
= |
Communication failure with ABS ECU |
NOTE
•The meter LCD displays diagnosis codes for the meter, and LIN communication system, in addition to those for the CAN communication system.
Meter (0041 - 0041, 0061)
Refer to Page J3-14.
LIN communication system (0011 - 0021)
Refer to Page L2-44.
L2–14
1-10 BASIC CHECK
è1. CAN line resistance value check
1.Measure the resistance value between the following terminals.
(1) Between DLC3 (CANL) - DLC11 (CANH)
SPECIFIED VALUE: 55 - 65+
NOTE
•When the wires between DLC3 (CANL) - DLC11 (CANH) are short circuited, the resistance value is about 0+.
When the CAN line has open wire between the combination meter - EFI ECU, the resistance value is about 120+.
Measured value |
SPECIFICATIONS |
Judgment |
In the case of OK |
( |
a |
If the reading is 55+ or be- |
RHD vehicles |
b |
low. |
LHD vehicles |
c |
If the reading is 65+ or |
RHD vehicles |
d |
above. |
LHD vehicles |
e |
çIn case of a, proceed to è6. çIn case of b, proceed to è2. çIn case of c, proceed to è3. çIn case of d, proceed to è4. çIn case of e, proceed to è5.
è2. Short-circuit check with CAN line (RHD vehicles)
1.Perform checking of the harness and connectors between the following terminals.
(1)Between DLC3 (CANL) - combination meter connection vehicle harness side connector 4 (LCAN)
(2)Between DLC11 (CANH) - combination meter connection vehicle harness side connector 3 (HCAN)
(3)Between combination meter connection vehicle harness side connector 1 (CANH) - EFI ECU connection vehicle harness side connector 9 (HCAN)
(4)Between combination meter connection vehicle harness side connector 2 (CANL) - EFI ECU con-
nection vehicle harness side connector 8 (LCAN)
2.Check the harness and connector between the following terminals on the A/T vehicle.
(1)Between EFI ECU connection vehicle harness side connector 6 (CANL) - A/T ECU connection vehicle harness side connector B19 (LCN1)
(2)Between EFI ECU connection vehicle harness side connector 7 (CANH) - A/T ECU connection vehicle harness side connector B9 (HCN1)
(3)Between A/T ECU connection vehicle harness side connector B10 (CANH) - ABS actuator connection vehicle harness side connector 17 (HCAN)
(4)Between A/T ECU connection vehicle harness side connector B20 (CANL) - ABS actuator connection vehicle harness side connector 19 (LCAN)
3.Check the harness and connector between the following terminals on the M/T vehicle.
(1)Between EFI ECU connection vehicle harness side connector 6 (CANL) 14 (GND) ABS actuator connection vehicle harness side connector 19 (LCAN)
(2)Between EFI ECU connection vehicle harness side connector 7 (CANH) - ABS actuator connection vehicle harness side connector 17 (HCAN)
L2–15
è3. Check of CAN line for short-circuit (LHD vehicles)
1.Perform checking of the harness and connectors between the following terminals.
(1)Between DLC3 (CANL) - combination meter connection vehicle harness side connector 4 (LCAN)
(2)Between DLC11 (CANH) - combination meter connection vehicle harness side connector 9 (HCAN)
(3)Between EFI ECU connection vehicle harness side connector 6 (CANL) - combination meter connection vehicle harness side connector 4 (LCAN)
(4)Between EFI ECU connection vehicle harness side connector 7 (CANH) - combination meter connection vehicle harness side connector 3 (HCAN)
2.Check the harness and the connector between the following terminals on the A/T vehicle.
(1)Between combination meter connection vehicle harness side connector 1 (CANH) - A/T ECU connection vehicle harness side connector B9 (HCN1)
(2)Between combination meter connection vehicle harness side connector 2 (CANL) - A/T ECU connection vehicle harness side connector B19 (LCN1)
(3)Between A/T ECU connection vehicle harness side connector B10 (CANH) - ABS actuator connection vehicle harness side connector 19 (LCAN)
(4)Between A/T ECU connection vehicle harness side connector B20 (CANL) - ABS actuator con-
nection vehicle harness side connector 19 (LCAN)
3.Check the harness and the connector between the following terminals on the M/T vehicle.
(1)Between combination meter connection vehicle harness side connector 1 (CANH) - ABS actuator connection vehicle harness side connector 19 (LCAN)
(2)Between combination meter connection vehicle harness side connector 2 (CANL) - ABS actuator connection vehicle harness side connector 19 (LCAN)
è4. Check of CAN line for open wire (RHD vehicles)
1.Perform checking of the harness and connectors between the following terminals.
(1)Between DLC3 (CANL) - combination meter connection vehicle harness side connector 4 (LCAN)
(2)Between DLC11 (CANH) - combination meter connection vehicle harness side connector 3 (HCAN)
(3)Between combination meter connection vehicle harness side connector 1 (CANH) - EFI ECU connection vehicle harness side connector 9 (HCAN)
(4)Between combination meter connection vehicle harness side connector 2 (CANL) - EFI ECU connection vehicle harness side connector 8 (LCAN)
è5. Check of CAN line for open wire (LHD vehicls)
1.Check the harness and the connector between the following terminals.
(1)Between DLC3 (CANL) - EFI ECU connection vehicle harness side connector 8 (LCAN)
(2)Between DLC11 (CANH) - EFI ECU connection vehicle harness side connector 9 (HCAN)
(3)Between EFI ECU connection vehicle harness side connector 6 (CANL) - combination meter connection vehicle harness side connector 4 (LCAN)
(4)Between EFI ECU connection vehicle harness side connector 7 (CANH) - combination meter connection vehicle harness side connector 3 (HCAN)
L2–16
è6. Check of CAN line for short-circuit
1.Perform continuity check between the following terminals.0252
(1)Between DLC3 (CANL) - battery positive (+) terminal
(2)Between DLC11 (CANH) - battery positive (+) terminal
(3)Between DLC3 (CANL) - body earth
(4)Between DLC11 (CANH) - body earth
SPECIFIED VALUE: No continuity exists.
çIf it is OK, proceed to è7.
çIf it is NG, repair or replace the malfunctioning sections
è7. Connector connection check
1.Check the connecting conditions of the connectors in the following sections.
NOTE
•Check connectors especially for loosening or half fit.
(1)DLC
(2)Combination meter
(3)EFI ECU
(4)A/T ECU
(5)ABS actuator
SPECIFIED VALUE: No failure exists.
çIf it is OK, proceed to è8.
çIf it is NG, repair or replace the malfunctioning sections.
è8. Connector condition check
1.Turn IG switch to "LOCK".
2.Disconnect the negative terminal of the battery.
NOTE
•Record the diagnosis codes of all the systems before disconnecting the negative terminal of the battery.
3.Disconnect all the connectors of the ECU of the CAN communication employed system.
4.Perform the following checks for the ECU connection vehicle harness side connector of the CAN communication employed system and the DLC connector and each terminal.
(1)Falling off
(2)Bend
(3)Poor fit
SPECIFIED VALUE: No failure exists.
çIf it is OK and the vehicle is a RHD vehicle, go to è9. çIf it is OK and the vehicle is a LHD vehicle, go to è10. çIf it is NG, repair or replace the malfunctioning sections.
L2–17
è9. Harness check (RHD vehicles)
1.Disconnect all the connectors of the combination meter, EFI ECU, A/T ECU and ABS actuator. 2.Perform continuity check between the following terminals.
(1)Between DLC3 (CANL) - combination meter connection vehicle harness side connector 4 (LCAN)
(2)Between DLC11 (CANH) - combination meter connection vehicle harness side connector 3 (HCAN)
(3)Between combination meter connection vehicle harness side connector 1 (CANH) - EFI ECU connection vehicle harness side connector 9 (HCAN)
(4)Between combination meter connection vehicle harness side connector 2 (CANL) - EFI ECU connection vehicle harness side connector 8 (LCAN)
3.Check continuity between the following terminals on the A/T vehicle.
(1)Between EFI ECU connection vehicle harness side connector 6 (CANL) - A/T ECU connection vehicle harness side connector B19 (LCN1)
(2)Between EFI ECU connection vehicle harness side connector 7 (CANH) - A/T ECU connection vehicle harness side connector B9 (HCN1)
(3)Between A/T ECU connection vehicle harness side connector B10 (CANH) - ABS actuator connection vehicle harness side connector 17 (HCAN)
(4)Between A/T ECU connection vehicle harness side connector B20 (CANL) - ABS actuator connection vehicle harness side connector 19 (LCAN)
4.Check continuity between the following terminals on the M/T vehicle.
(1)Between EFI ECU connection vehicle harness side connector 6 (CANL) - ABS actuator connection vehicle harness side connector 19 (LCAN)
(2)Between EFI ECU connection vehicle harness side connector 7 (CANH) - ABS actuator connection vehicle harness side connector 19 (LCAN)
SPECIFIED VALUE: Continuity exists.
çIf it is OK, proceed to è11.
çIf it is NG, repair or replace the malfunctioning sections.
è10. Wire harness check (LHD vehicle)
1.Remove all the connectors on the EFI ECU, combination meter, A/T ECU, and ABS actuator. 2.Check continuity between the following terminals.
(1)Between DLC3 (CANL) - EFI ECU connection vehicle harness side connector 8 (LCAN)
(2)Between DLC4 (HCAN) - EFI ECU connection vehicle harness side connector 9 (HCAN)
(3)Between EFI ECU connection vehicle harness side connector 6 (CANL) - combination meter connection vehicle harness side connector 4 (LCAN)
(4)Between EFI ECU connection vehicle harness side connector 7 (CANH) - combination meter connection vehicle harness side connector 3 (HCAN)
3.Check continuity between the following terminals on the A/T vehicle.
(1)Between combination meter connection vehicle harness side connector 1 (CANH) - A/T ECU connection vehicle harness side connector B9 (HCN1)
(2)Between combination meter connection vehicle harness side connector 2 (CANL) - A/T ECU connection vehicle harness side connector B19 (LCN1)
(3)Between A/T ECU connection vehicle harness side connector B10 (CANH) - ABS actuator connection vehicle harness side connector 17 (HCN1)
(4)Between A/T ECU connection vehicle harness side connector B20 (CANL) - ABS actuator connection vehicle harness side connector 19 (LCAN)
L2–18
4.Check continuity between the following terminals on the M/T vehicle.
(1)Between combination meter connection vehicle harness side connector 1 (CANH) - ABS actuator connection vehicle harness side connector 17 (HCAN)
(2)Between combination meter connection vehicle harness side connector 2 (CANL) - ABS actuator connection vehicle harness side connector 19 (LCAN)
SPECIFIED VALUE: Continuity exists
çIf it is OK, go to è11.
çIn the case of NG, repair or replace the malfunctioning sections.
è11. Combination meter voltage check
1.Connect the connectors of the EFI ECU and A/T ECU.
NOTE
•When connecting, connect so that there are no half fit connectors.
2.Turn "ON"the IG switch.
3.Measure the voltage between the following terminals.
(1) Between combination meter connection vehicle harness side connector 10 ('B) - body earth
SPECIFIED VALUE: Battery voltage
çIf it is OK, proceed to è12.
çIf it is NG, check the power supply system of the combination meter.
è12. Combination meter earth check
1.Turn the IG switch to "LOCK".
2.Perform continuity check between the following terminals.
(1) Between combination meter connection vehicle harness side connector 18 (GND) - body earth
SPECIFIED VALUE: Continuity exists.
çIf it is OK, proceed to è13.
çIf it is NG, repair or replace the malfunctioning section.
è13. ECU power supply voltage check
1.Turn "ON" the IG switch.
2.Measure the voltage between the terminals of the CAN communication employed system.
(1)Between EFI ECU connection vehicle harness side connector 27 ('B) - body earth
(2)Between A/T ECU connection vehicle harness side connector B3 ('B) - body earth
(3)Between ABS actuator connection vehicle harness side connector 20 ('IG) - body earth
SPECIFIED VALUE: Battery voltage
çIf it is OK, proceed to è14.
çIf it is NG, repair or replace the malfunctioning section.
L2–19
è14. ECU earth check
1.Turn the IG switch to "LOCK".
2.Perform continuity check between the terminals of the CAN communication employed system.
(1)Between EFI ECU connection vehicle harness side connector 125 (E1) - body earth
(2)Between A/T ECU connection vehicle harness side connector B24 (E1) - body earth
(3)Between ABS actuator connection vehicle harness side connector 14 (GND) - body earth
SPECIFIED VALUE: Continuity exists
çIf it is OK, perform circuit check of each ECU.
çIf it is NG, repair or replace the malfunctioning section.
L2–20
1-11 TROUBLE SHOOTING ACCORDING TO DIAGNOSIS CODE
1-11-1 NO.0051 (EFI ECU COMMUNICATION FAILURE)
(1) Output conditions
1.When the CAN communication (meter reception) between the combination meter - EFI ECU has been disrupted for 12 seconds or more.
(2) Checking points
1.Is the harness between the combination meter - EFI ECU normal? 2.Is there any abnormality in the connectors of the EFI ECU?
3.Is the combination meter normal? 4.Is the EFI ECU normal?
(3) Checking method
è1. Diagnosis code confirmation
1.Check if the diagnosis codes related to CAN are outputted in the meter LCD.
çIf No.0052 is outputted simultaneously, refer to the trouble shooting of "No.0051, No.0052 simultaneous output".
Refer to Page L2-28.
çIf No.0053 is outputted simultaneously, refer to the trouble shooting of "No.0051, No.0053 simultaneous output".
Refer to Page L2-31.
çIf No.0052 and No.0053 are outputted simultaneously, refer to the trouble shooting of "No.0051, No.0052 and No.0053 simultaneous output".
Refer to Page L2-35.
çIf only No.0051 is output, proceed to è2.
è2. CAN basic check
1.Perform basic check of CAN.
Refer to Page L2-14.
çProceed to è3.
è3. EFI ECU internal resistance check
1.Disconnect all connectors of the EFI ECU.
2.Measure the resistance value between the following terminals.
(1)Between EFI ECU side connector 6 (CANL) - EFI ECU side connector 7 (CANH)
(2)Between EFI ECU side connector 8 (LCAN) - EFI ECU side connector 9 (HCAN)
SPECIFIED VALUE: 110 - 130+
çIf it is OK, proceed to è4.
çIf it is NG, replace the EFI ECU.
L2–21
è4. Combination meter internal resistance check
1.Disconnect all the connectors of the combination meter. 2.Measure the resistance value between the following terminals.
(1)Between combination meter side connector 1 (CANH) - combination meter side connector 2 (CANL)
(2)Between combination meter side connector 3 (HCAN) - combination meter side connector 4 (LCAN)
SPECIFIED VALUE: 110 - 130+
çIf it is OK, perform circuit check of the combination meter and the EFI ECU. çIf it is NG, replace the combination meter.
L2–22
1-11-2 NO.0052 (A/T ECU COMMUNICATION FAILURE)
(1) Output conditions
1.When the CAN communication (meter reception) between the combination meter - A/T ECU has been disrupted for 12 seconds or more.
(2) Checking points
1.Is the harness between the EFI ECU - A/T ECU normal (RHD vehicle)?
2.Is the harness between the combination meter - A/T ECU normal (LHD vehicle)? 3.Is the harness between the A/T ECU - ABS ECU normal?
4.Is there any abnormality in the connectors of the A/T ECU? 5.Is the ABS ECU normal?
6.Is the A/T ECU normal? 7.Is the ABS actuator normal?
(3) Checking method
è1. Diagnosis code confirmation
1.Check if the diagnosis codes related to CAN are outputted in the meter LCD.
çIf No.0051 is outputted simultaneously, refer to the trouble shooting of "No.0051, No.0052 simultaneous output".
Refer to Page L2-28.
çIf No.0053 is outputted simultaneously, refer to the trouble shooting of "No.0052, No.0053 simultaneous output".
Refer to Page L2-33.
çIf No.0051 and No.0053 are outputted simultaneously, refer to the trouble shooting of "No.0051, No.0052 and No.0053 simultaneous output".
Refer to Page L2-35.
çIf only No.0052 is outputted, proceed to è2.
è2. CAN basic check
1.Perform basic check of CAN.
Refer to Page L2-14.
çIf the vehicle is RHD, go to è3. çIf the vehicle is LHD, go to è4.
è3. Short-circuit check between CAN lines (RHD vehicles)
1.Turn IG switch to "LOCK".
2.Disconnect the negative terminal of the battery. 3.Disconnect all connectors of the EFI ECU and A/T ECU. 4.Perform continuity check between the following terminals.
(1)Between EFI ECU connection vehicle harness side connector 6 (CANL) - EFI ECU connection vehicle harness side connector 7 (CANH)
(2)Between A/T ECU connection vehicle harness side connector B9 (HCN1) - A/T ECU connection vehicle harness side connector B19 (LCN1)
SPECIFIED VALUE: No continuity exists.
çIf it is OK, proceed to è5.
çIf it is NG, repair or replace the malfunctioning section.
L2–23
è4. Short-circuit check between CAN lines (LHD vehicles)
1.Set the IG switch to LOCK.
2.Remove the battery negative (-) terminal.
3.Remove all the connectors on the combination meter and the A/T ECU. 4.Check for continuity between the following terminals.
(1)Between combination meter connection vehicle harness side connector 1 (CANH) - combination meter connection vehicle harness side connector 2 (CANL)
(2)Between A/T ECU connection vehicle harness side connector B9 (HCN1) - A/T ECU connection vehicle harness side connector B19 (LCN1)
SPECIFIED VALUE: No continuity exists
çIf it is OK, go to è5.
çIn the case of NG, repair or replace the malfunctioning sections.
è5. CAN line short-circuit check
1.Perform continuity check between the following terminals.
(1)Between A/T ECU connection vehicle harness side connector B19 (LCN1) - battery positive (+) terminal
(2)Between A/T ECU connection vehicle harness side connector B9 (HCN1) - battery positive (+) terminal
(3)Between A/T ECU connection vehicle harness side connector B19 (LCN1) - body earth
(4)Between A/T ECU connection vehicle harness side connector B9 (HCN1) - body earth
SPECIFIED VALUE: No continuity exists.
çIf it is OK, proceed to è6.
çIf it is NG, repair or replace the malfunctioning section.
è6. EFI ECU internal resistance check
1.Disconnect all the connectors of the EFI ECU.
2.Measure the resistance value between the following terminals.
(1)Between EFI ECU side connector 6 (CANL) - EFI ECU side connector 7 (CANH)
(2)Between EFI ECU side connector 8 (LCAN) - EFI ECU side connector 9 (HCAN)
SPECIFIED VALUE: 110 - 130+
çIf it is OK, proceed to è7.
çIf it is NG, replace the EFI ECU.
è7. Combination meter internal resistance check
1.Disconnect the connectors of the combination meter. 2.Measure the resistance value between the following terminals.
(1)Between combination meter side connector 1 (CANH) - combination meter side connector 2 (CANL)
(2)Between combination meter side connector 3 (HCAN) - combination meter side connector 4 (LCAN)
SPECIFIED VALUE: 110 - 130+
çIf it is OK, proceed to è8.
çIf it is NG, replace the combination meter.
L2–24
è8. A/T ECU internal circuit check
1.Disconnect all the connectors of the A/T ECU.
2.Perform continuity check between the following terminals.
(1)Between A/T ECU side connector B9 (HCN1) - A/T ECU side connector B19 (LCN1)
(2)Between A/T ECU side connector B10 (CANH) - A/T ECU side connector B20 (CANL)
(3)Between A/T ECU side connector B9 (HCN1) - A/T ECU side connector B10 (CANH)
(4)Between A/T ECU side connector B19 (LCN1) - A/T ECU side connector B20 (CANL)
SPECIFIED VALUE:
Between measured terminals |
Continuity |
Between B9 (HCN1) - B19 (LCN1) |
Continuity exists |
Between B10 (CANH) - B20 (CANL) |
(less than 1M+) |
Between B9 (HCN1) - B10 (CANH) |
Continuity exists |
Between B19 (LCN1) - B20 (CANL) |
(1+ or less) |
çIf everything is OK, perform circuit check of the EFI ECU, the A/T ECU and the combination meter. çIf even one of them is NG, replace the A/T ECU.
L2–25
1-11-3 NO.0053 (ABS ECU COMMUNICATION FAILURE)
(1) Output conditions
1.When the CAN communication (meter reception) between the combination meter - ABS actuator has been disrupted for 12 seconds or more.
(2) Checking points
1 Right hand drive vehicles
1.Is the harness between the EFI ECU - A/T ECU normal?
2.Is the harness between the A/T ECU - ABS ECU normal? (A/T vehicles) 3.Is the harness between EFI ECU - ABS ECU normal? (M/T vehicle). 4.Is there any abnormality in the connectors of the A/T ECU?
5.Is there any abnormality in the connectors of the ABS ECU? 6.Is the A/T ECU normal?
7.Is the ABS ECU normal?
2 Left hand drive vehicles
1.Is the harness between the combination meter and A/T ECU normal? 2.Is the harness between A/T ECU - ABS ECU normal? (A/T vehicle).
3.Is the harness between the combination meter and ABS ECU normal? (M/T vehicle). 4.Is the A/T ECU connector normal?
5.Is the ABS ECU connector normal? 6.Is the A/T ECU normal?
7.Is the ABS ECU normal?
(3) Checking method
è1. Diagnosis code confirmation
1.Check if the diagnosis codes related to CAN are outputted in the meter LCD.
çIf No.0051 is outputted simultaneously, refer to the trouble shooting of "No.0051, No.0053 simultaneous output".
Refer to Page L2-31.
çIf No.0052 is outputted simultaneously, refer to the trouble shooting of "No.0052, No.0053 simultaneous output".
Refer to Page L2-33.
çIf No.0051 and No.0052 are outputted simultaneously, refer to the trouble shooting of "No.0051, No.0052 and No.0053 simultaneous output".
Refer to Page L2-35.
çIf only No.0053 is outputted, proceed to è2.
è2. CAN basic check
1.Perform basic check of CAN.
Refer to Page L2-14.
çProceed to è3.
L2–26
è3. Short-circuit check between CAN lines
1.Turn IG switch to "LOCK".
2.Disconnect the negative terminal of the battery.
3.Disconnect all connectors of the EFI ECU, A/T ECU and ABS actuator. 4.Perform continuity check between the following terminals.
(1)Between EFI ECU connection vehicle harness side connector 6 (CANL) - EFI ECU connection vehicle harness side connector 7 (CANH)
(2)Between ABS actuator connection vehicle harness side connector 17 (HCAN) - ABS actuator connection vehicle harness side connector 19 (LCAN)
5.Check for continuity between the following terminals on the A/T vehicle.
(1)Between A/T ECU connection vehicle harness side connector B9 (HCN1) - A/T ECU connection vehicle harness side connector B19 (LCN1)
(2)Between A/T ECU connection vehicle harness side connector B10 (CANH) - A/T ECU connection vehicle harness side connector B20 (CANL)
SPECIFIED VALUE: No continuity exists.
çIf it is OK, proceed to è4.
çIf it is NG, repair or replace the malfunctioning section.
è4. CAN line short-circuit check
1.Perform continuity check between the following terminals.
(1)Between ABS actuator connection vehicle harness side connector 17 (HCAN) - battery positive (+) terminal
(2)Between ABS actuator connection vehicle harness side connector 19 (LCAN) - battery positive (+) terminal
(3)Between ABS actuator connection vehicle harness side connector 17 HCAN) - body earth
(4)Between ABS actuator connection vehicle harness side connector 19 (LCAN) - body earth
SPECIFIED VALUE: No continuity exists.
çIf it is OK, proceed to è5.
çIf it is NG, repair or replace the malfunctioning section.
è5. EFI ECU internal resistance check
1.Disconnect all the connectors of the EFI ECU.
2.Measure the resistance value between the following terminals.
(1)Between EFI ECU side connector 6 (CANL) - EFI ECU side connector 7 (CANH)
(2)Between EFI ECU side connector 8 (LCAN) - EFI ECU side connector 9 (HCAN)
SPECIFIED VALUE: 110 - 130+
çIf it is OK, proceed to è6.
çIf it is NG, replace the EFI ECU.
L2–27
è6. Combination meter internal resistance check
1.Disconnect the connectors of the combination meter. 2.Measure the resistance value between the following terminals.
(1)Between combination meter side connector 1 (CANH) - combination meter side connector 2 (CANL)
(2)Between combination meter side connector 3 (HCAN) - combination meter side connector 4 (LCAN)
SPECIFIED VALUE: 110 - 130+
çIf it is OK, proceed to è7.
çIf it is NG, replace the combination meter.
è7. ABS actuator internal circuit check
1.Disconnect the connectors of the ABS actuator. 2.Perform continuity check between the following terminals.
(1) Between ABS actuator side connector 17 (HCAN) - ABS actuator side connector 19 (LCAN)
SPECIFIED VALUE: Continuity exists (less than 1M+)
çIf it is OK, proceed to è8.
çIf it is OK and the vehicle is a M/T vehicle, check circuits of the EFI ECU, ABS actuator, and combination meter.
Refer to Page A1-24.
çIf it is NG, replace the ABS actuator.
Refer to Page E3-1.
è8. A/T ECU internal circuit check
1.Disconnect all the connectors of the A/T ECU.
2.Perform continuity check between the following terminals.
(1)Between A/T ECU side connector B9 (HCN1) - A/T ECU side connector B19 (LCN1)
(2)Between A/T ECU side connector B10 (CANH) - A/T ECU side connector B20 (CANL)
(3)Between A/T ECU side connector B9 (HCN1) - A/T ECU side connector B10 (CANH)
(4)Between A/T ECU side connector B19 (LCN1) - A/T ECU side connector B20 (CANL)
SPECIFIED VALUE:
Between measured terminals |
Continuity |
Between B9 (HCN1) - B19 (LCN1) |
Continuity exists |
Between B10 (CANH) - B20 (CANL) |
(less than 1M+) |
Between B9 (HCN1) - B10 (CANH) |
Continuity exists |
Between B19 (LCN1) - B20 (CANL) |
(1+ or less) |
çIf everything is OK, perform circuit check of the EFI ECU, the A/T ECU, the ABS actuator and the combination meter.
çIf even one of them is NG, replace the A/T ECU.
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