Infiniti M45 (Y34). Manual - part 622

CAN SYSTEM (TYPE 2)

LAN-55

[CAN]

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2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect combination meter connector.

2.

Check resistance between combination meter harness connec-
tor M41 terminals 34 (L) and 35 (R).

OK or NG

OK

>> Replace combination meter.

NG

>> Repair harness between combination meter and steer-

ing angle sensor.

CAN Communication Circuit Check

AKS003YJ

1. 

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Check following terminals and connector for damage, bend and loose connection (control module side,
control unit side, sensor side, unit side, meter side and harness side).

–

ECM

–

VDC/TCS/ABS control unit

–

ICC sensor

–

ICC unit

–

TCM

–

Steering angle sensor

–

Combination meter

–

Between ECM and TCM

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal or connector.

2. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

Disconnect ECM connector and harness connector F105.

2.

Check continuity between ECM harness connector F102 termi-
nals 174 (L) and 171 (R).

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness between ECM and harness connector

F105.

34 (L) – 35 (R) 

: Approx. 108 – 132

Ω

SKIA3885E

174 (L) – 171 (R) 

: Continuity should not exist.

PKIA0279E

LAN-56

[CAN]

CAN SYSTEM (TYPE 2)

3. 

CHECK HARNESS FOR SHORT CIRCUIT

Check continuity between ECM harness connector F102 terminals
174 (L), 171 (R) and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness between ECM and harness connector

F105.

4. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

Disconnect the following connectors.

–

Harness connector M132

–

Harness connector M15

–

Harness connector M141

2.

Check continuity between harness connector M135 terminals
46T (L) and 45T (R).

OK or NG

OK

>> GO TO 5.

NG

>> Check the following harnesses. If any harness is dam-

aged, repair the harness.

●

Harness between harness connector M135 and har-
ness connector M132

●

Harness between harness connector M135 and har-
ness connector M15

●

Harness between harness connector M135 and harness connector M141

5. 

CHECK HARNESS FOR SHORT CIRCUIT

Check continuity between harness connector M135 terminals 46T
(L), 45T (R) and ground.

OK or NG

OK

>> GO TO 6.

NG

>> Check the following harnesses. If any harness is dam-

aged, repair the harness.

●

Harness between harness connector M135 and har-
ness connector M132

●

Harness between harness connector M135 and harness connector M15

●

Harness between harness connector M135 and harness connector M141

174 (L) – ground

: Continuity should not exist.

171 (R) – ground

: Continuity should not exist.

PKIA0292E

46T (L) – 45T (R) 

: Continuity should not exist.

SKIA3886E

46T (L) – ground

: Continuity should not exist.

45T (R) – ground

: Continuity should not exist.

SKIA3887E

CAN SYSTEM (TYPE 2)

LAN-57

[CAN]

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LAN

6. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

Disconnect VDC/TCS/ABS control unit connector.

2.

Check continuity between VDC/TCS/ABS control unit harness
connector E218 terminals 61 (L) and 63 (R).

OK or NG

OK

>> GO TO 7.

NG

>> Repair harness between VDC/TCS/ABS control unit and

harness connector E222.

7. 

CHECK HARNESS FOR SHORT CIRCUIT

Check continuity between VDC/TCS/ABS control unit harness con-
nector E218 terminals 61 (L), 63 (R) and ground.

OK or NG

OK

>> GO TO 8.

NG

>> Repair harness between VDC/TCS/ABS control unit and

harness connector E222.

8. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

Disconnect ICC sensor connector.

2.

Check continuity between ICC sensor harness connector E52
terminals 3 (L) and 6 (R).

OK or NG

OK

>> GO TO 9.

NG

>> Repair harness between ICC sensor and harness con-

nector E205.

9. 

CHECK HARNESS FOR SHORT CIRCUIT

Check continuity between ICC sensor harness connector E52 termi-
nals 3 (L), 6 (R) and ground.

OK or NG

OK

>> GO TO 10.

NG

>> Repair harness between ICC sensor and harness con-

nector E205.

61 (L) – 63 (R) 

: Continuity should not exist.

PKIA0280E

61 (L) – ground

: Continuity should not exist.

63 (R) – ground

: Continuity should not exist.

PKIA0291E

3 (L) – 6 (R) 

: Continuity should not exist.

SKIA1263E

3 (L) – ground

: Continuity should not exist.

6 (R) – ground

: Continuity should not exist.

SKIA3900E

LAN-58

[CAN]

CAN SYSTEM (TYPE 2)

10. 

CHECK HARNESS FOR SHORT CIRCUIT

Check continuity between harness connector B211 terminals 52V (L)
and 53V (R).

OK or NG

OK

>> GO TO 11.

NG

>> Check the following harnesses. If any harness is dam-

aged, repair the harness.

●

Harness between harness connector B211 and har-
ness connector B211

●

Harness between harness connector B211 and ICC
unit

11. 

CHECK HARNESS FOR SHORT CIRCUIT

Check continuity between harness connector B211 terminals 52V
(L), 53V (R) and ground.

OK or NG

OK

>> GO TO 12.

NG

>> Check the following harnesses. If any harness is dam-

aged, repair the harness.

●

Harness between harness connector B211 and har-
ness connector B211

●

Harness between harness connector B211 and ICC unit

12. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

Disconnect steering angle sensor connector and combination meter connector.

2.

Check continuity between data link connector M31 terminals 6
(L) and 3 (R).

OK or NG

OK

>> GO TO 13.

NG

>> Check the following harnesses. If any harness is dam-

aged, repair the harness.

●

Harness between data link connector and harness
connector M141

●

Harness between data link connector and harness
connector M135

●

Harness between data link connector and steering angle sensor

●

Harness between data link connector and combination meter

52V (L) – 53V (R) 

: Continuity should not exist.

SKIA3888E

52V (L) – ground

: Continuity should not exist.

53V (R) – ground

: Continuity should not exist.

SKIA3889E

6 (L) – 3 (R) 

: Continuity should not exist.

PKIA0285E