2004 INFINITI QX56 Factory Service Manual

trip computer brakes headlight aiming window engine ESP

Page 49 of 3371

INFINITI QX56 2004 Factory Service Manual ACS-40
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: August 20072004 QX56
DTC 45 BRAKE SW/STOP L SWEKS007X8
1. CHECK CONNECTORS FOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect IC

Page 50 of 3371

INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-41
[ICC]
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Revision: August 20072004 QX56
6. CHECK ICC BRAKE HOLD RELAY
1. Turn ignition switch OFF.
2. Remove ICC brake hold r

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-41
[ICC]
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6. CHECK ICC BRAKE HOLD RELAY
1. Turn ignition switch OFF.
2. Remove ICC brake hold relay.
3. Check continuity between terminals of ICC brake hold relay.
OK or NG
OK >> GO TO 7.
NG >> Replace ICC brake hold relay. Erase DTC and perform
ICC system running test. Then perform self-diagnosis of
ICC system again.
7. CHECK ICC BRAKE HOLD RELAY CIRCUIT
1. Disconnect connectors of ICC unit and stop lamp switch.
2. Check continuity between ICC unit harness connector B17 ter-
minal 38 (R/G) and ICC brake hold relay harness connector
E134 terminal 7 (R/G).
3. Check continuity between ICC unit harness connector B17 ter-
minal 38 (R/G) and stop lamp switch harness connector E38 ter-
minal 4 (R/G).
OK or NG
OK >> Replace ICC unit. Refer to ACS-59, "ICC Unit" . Erase
DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
NG >>
Repair harness between ICC unit and ICC brake hold relay or stop lamp switch.
After repair, erase DTC and perform ICC system running test. Then, perform self-diagnosis of
ICC system again.
DTC 46 OPERATION SW CIRCEKS007X9
1. CHECK ECM CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ECM connector, and connect it securely again. Then erase DTC. Then, perform self-diagnosis
of ICC system again.
OK or NG
OK >>Poor connector connection.
Check connector. (Check connector housing for disconnected, loose, bent, and collapsed ter-
minals. If any malfunction is detected, repair applicable part.) After repair, erase DTC, and per-
form ICC system running test. Then perform self-diagnosis of ICC system again.
NG >> GO TO 2.
2. CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to ACS-58, "ICC Steering Switch" .
OK or NG
OK >> GO TO 3.
NG >> Replace ICC steering switch assembly. Refer to ACS-59, "
ICC Steering Switch" . Erase DTC and
perform ICC system running test. Then perform self-diagnosis of ICC system again. 7 - 6 Continuity should not exist.
4 - 3 Continuity should exist.
SKIA6651E
Continuity should exist.
Continuity should exist.
WKIA3403E

Page 51 of 3371

INFINITI QX56 2004 Factory Service Manual ACS-42
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: August 20072004 QX56
3. CHECK ICC STEERING SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect connectors of ECM and spi

Page 52 of 3371

INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-43
[ICC]
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Revision: August 20072004 QX56
DTC 90 STOP LAMP RLY FIXEKS007XF
1. CHECK ICC UNIT CONNECTOR
1. Turn ignition switch

Page 53 of 3371

INFINITI QX56 2004 Factory Service Manual ACS-44
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: August 20072004 QX56
6. CHECK HARNESS THROUGH ICC BRAKE HOLD RELAY, ICC BRAKE SWITCH, ICC UNIT
1. Disconnect ICC brake hold relay, EC

Page 54 of 3371

INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-45
[ICC]
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Revision: August 20072004 QX56
10. CHECK ICC BRAKE HOLD RELAY
1. Disconnect ICC brake hold relay.
2. Check continui

Page 55 of 3371

INFINITI QX56 2004 Factory Service Manual ACS-46
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: August 20072004 QX56
13. CHECK ICC UNIT STANDARD VOLTAGE
With CONSULT-II
1. Connect connectors of ICC unit and stop lamp switch.
2.

Page 56 of 3371

INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-47
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Revision: August 20072004 QX56
16. CHECK ICC BRAKE HOLD RELAY
With CONSULT-II
1. Connect ICC unit and ICC brake ho

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