Infiniti F50. Manual - part 23

 

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Infiniti F50. Manual - part 23

 

 

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

ACS-85

[ICC]

C

D

E

F

G

H

I

J

L

M

A

B

ACS

7. 

CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT 

1.

Turn ignition switch ON.

2.

Check voltage between ICC brake hold relay harness connector
E38 terminal 4 (R/B) and ground.

OK or NG

NG

>>

Malfunction of fuse, or ICC brake hold relay power
supply system harness.

After repair, erase DTC and perform ICC system run-
ning test. Then, perform self-diagnosis of ICC system
again.

OK

>> Replace ICC unit. Erase DTC and perform ICC system running test. Then perform self-diagnosis

of ICC system again.

8. 

CHECK BRAKE LAMP ILLUMINATION

1.

Disconnect ICC brake hold relay connector.

2.

Check stop lamp circuit.

OK or NG

NG

>> After repair, erase DTC and perform ICC system running test. Then, perform self-diagnosis of ICC

system again.

OK

>> GO TO 9.

9. 

CHECK ICC BRAKE HOLD RELAY CIRCUIT 

1.

Connect ICC brake hold relay connector.

2.

Disconnect stop lamp switch connector.

3.

When brake pedal is not depressed, make sure that stop lamp does not illuminate.

OK or NG

NG

>> GO TO 10.

OK

>> Replace ICC unit. Erase DTC and perform ICC system running test. Then perform self-diagnosis

of ICC system again.

10. 

CHECK ICC BRAKE HOLD RELAY 

1.

Disconnect ICC brake hold relay.

2.

Check continuity between ICC brake hold relay E38 terminal 6
and terminal 7.

OK or NG

NG

>> Replace ICC brake hold relay. Erase DTC and perform

ICC system running test. Then perform self-diagnosis of
ICC system again.

OK

>> Replace ICC unit. Erase DTC and perform ICC system

running test. Then perform self-diagnosis of ICC system
again.

Approx. 12V

SKIA1194E

Continuity should not exist.

SKIA1195E

ACS-86

[ICC]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

11. 

 CHECK HARNESS THROUGH ICC UNIT, ICC BRAKE HOLD RELAY, AND GROUND

1.

Disconnect connectors of ICC unit and ICC brake hold relay.

2.

Check continuity between ICC unit harness connector B244 ter-
minal 47 (L/W) and ICC brake hold relay E38 terminal 1 (L/W).

3.

Check continuity between ICC unit harness connector B244 ter-
minal 47 (L/W) and ground.

4.

Check continuity between ICC brake hold relay harness connec-
tor E38 terminal 2 (B) and ground.

OK or NG

NG

>>

Repair harness through ICC unit, ICC brake hold
relay, and ground

After repair, erase DTC and perform ICC system run-
ning test. Then, perform self-diagnosis of ICC system
again.

OK

>> GO TO 12.

12. 

CHECK ICC BRAKE HOLD RELAY 

Check continuity between ICC brake hold relay terminal 1 and
terminal 2.

OK or NG

NG

>> Replace ICC brake hold relay. Erase DTC and perform

ICC system running test. Then perform self-diagnosis of
ICC system again.

OK

>> GO TO 13.

13. 

CHECK  ICC UNIT STANDARD VOLTAGE 

 With CONSULT-II

1.

Connect connectors of ICC unit and stop lamp switch.

2.

Active test (STOP LAMP:STP LMP DRIVE ON) with CONSULT-
II, check voltage between ICC unit harness connector B244 ter-
minal 47 (L/W) and ground.

OK or NG

NG

>> Replace ICC unit. Erase DTC and perform ICC system

running test. Then perform self-diagnosis of ICC system
again.

OK

>> GO TO 14.

47 - 1

Continuity should exist.

47 - Ground

Continuity should not exist.

SKIA1272E

Continuity should exist.

SKIA1271E

Continuity should exist.

SKIA1197E

47 - Ground

Approx. 12V (during active 
test) 

SKIA3075E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

ACS-87

[ICC]

C

D

E

F

G

H

I

J

L

M

A

B

ACS

14. 

CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT 

1.

Check voltage between ICC brake hold relay E38 terminal 6 (R/
Y) and ground.

OK or NG

NG

>>

Malfunctions of fuse or ICC brake hold relay power
supply harness.

After repair, erase DTC and perform ICC system run-
ning test. Then, perform self-diagnosis of ICC system
again.

OK

>> GO TO 15.

15. 

CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ICC UNIT

1.

Disconnect connectors of ICC brake hold relay and ICC unit.

2.

Check continuity between ICC brake hold relay harness connec-
tor E38 terminal 7 (R/W) and ICC unit harness connector B244
terminal 38 (R/W).

3.

Check continuity between ICC unit harness connector B244 ter-
minal 38 (R/W) and ground.

OK or NG

NG

>>

Repair harness between ICC brake hold relay and
ICC unit.

After repair, erase DTC and perform ICC system running test. Then, perform self-diagnosis of
ICC system again.

OK

>> GO TO 16.

16. 

CHECK ICC BRAKE HOLD RELAY 

 With CONSULT-II

1.

Connect connectors of ICC unit and ICC brake hold relay.

2.

Disconnect stop lamp switch connector.

3.

Perform active test (STOP LAMP) with CONSULT-II, and make sure that stop lamp is illuminated.

OK or NG

NG

>> Replace ICC brake hold relay. Erase DTC and perform ICC system running test. Then perform

self-diagnosis of ICC system again.

OK

>> GO TO 17.

6 - Ground

Approx. 12V

SKIA1198E

7 - 38

Continuity should exist.

38 - Ground

Continuity should not exist.

SKIA1199E

ACS-88

[ICC]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

17. 

CHECK ICC UNIT STANDARD VOLTAGE 

1.

Connect stop lamp switch connector.

2.

Perform active test (STOP LAMP:STP LMP DRIVE ON) with
CONSULT-II, check voltage between ICC unit harness connec-
tor B244 terminal 29 (G) and ground.

OK or NG

NG

>> Replace stop lamp switch.Erase DTC and perform ICC

system running test. Then perform self-diagnosis of ICC
system again.

OK

>> Replace ICC unit. Erase DTC and perform ICC system

running test. Then perform self-diagnosis of ICC system
again.

DTC 92 ECM CIRCUIT

EKS003PS

1. 

DIAGNOSIS CHECK 1

 With CONSULT-II

Perform self-diagnosis with CONSULT-II. Is “CAN COMM CIRCUIT” indicated?

Yes or No

Yes

>> Repair or replace applicable item. Erase DTC and perform ICC system running test. Then perform

self-diagnosis of ICC system again.

No

>> GO TO 2.

2. 

DIAGNOSIS CHECK 2

 With CONSULT-II

Perform ECM self-diagnosis with CONSULT-II. Is malfunction indicated?

Yes or No

Yes

>> Repair or replace applicable item. Erase DTC and perform ICC system running test. Then perform

self-diagnosis of ICC system again.

No

>> Replace ICC unit. Erase DTC and perform ICC system running test. Then perform self-diagnosis

of ICC system again.

DTC 97 AT CIRCUIT

EKS003PT

1. 

CHECK AT CIRCUIT

 With CONSULT-II

With TCM data monitor with CONSULT-II, check shift operates normally.

OK or NG

NG

>>

Perform TCM diagnosis.

After repair, Erase DTC, and perform self-diagnosis of ICC system again.

OK

>> Replace ICC unit. Erase DTC, and perform self-diagnosis of ICC system again.

DTC 98 GEAR POSITION

EKS003PU

1. 

DIAGNOSTIC CHECK

 With CONSULT-II

Is “DTC 43 ABS/TCS/VDC CIRC” or “DTC 41 VHCL SPEED SE CIRC” indicated in self-diagnosis display
item?

Yes or No

Yes

>> Repair or replace applicable item. Erase DTC, and perform self-diagnosis of ICC system again.

No

>> GO TO 2.

29 - Ground

Approx. 0V (during active test) 

SKIA1200E

 

 

 

 

 

 

 

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