2004 INFINITI FX35 Service Manual

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Page 49 of 4449

INFINITI FX35 2004 Service Manual ACS-40
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMSPFP:00000
Diagnostic Trouble Code (DTC) ChartAKS006YW
×:Appl

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INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-41
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Revision: 2004 November 2004 FX35/FX45
DTC 11 CONTROL UNITAKS006YX
1. DIAGNOSTIC CHECK
1. Are any items other than �

Page 51 of 4449

INFINITI FX35 2004 Service Manual ACS-42
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
DTC 31 POWER SUPPLY CIR, DTC 34 POWER SUPPLY CIR 2AKS006YZ
1. CHECK CONNECTOR ICC UNIT
1. Turn ignition

Page 52 of 4449

INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-43
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Revision: 2004 November 2004 FX35/FX45
2. CHECK AT VEHICLE SPEED SENSOR
With CONSULT-II
With data monitor, check �

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-43
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Revision: 2004 November 2004 FX35/FX45
2. CHECK AT VEHICLE SPEED SENSOR
With CONSULT-II
With data monitor, check “VHCL SPD AT”operate normally. Refer to ACS-32, "DATA MONITOR" .
OK or NG
OK >> Replace ICC unit. Erase DTC and perform ICC system running test. Then perform self-diagnosis
of ICC system again.
NG >>
Check TCM.
After repair, erase DTC and perform ICC system running test. Then, perform self-diagnosis of
ICC system again.
DTC 43 ABS/TCS/VDC CIRCAKS006Z2
1. DIAGNOSIS CHECK 1
With CONSULT-II
Perform self-diagnosis. 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 self-diagnosis of ABS actuator and electric unit (control unit). 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 45 BRAKE SW/STOP L SWAKS006Z3
1. CHECK CONNECTOR FOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector, and connect it securely again. Then erase DTC. After that, 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 STOP LAMP SWITCH AND ICC BRAKE SWITCH
With CONSULT-II
With data monitor, check if “STOP LAMP SW” and “BRAKE SW” are operated normally. Refer to ACS-32,
"DATA MONITOR" .
OK or NG
OK >> Replace ICC unit. Erase DTC and perform ICC system running test. Then perform self-diagnosis
of ICC system again.
NG >>
BRAKE SW: GO TO 3.
STOP LAMP SW: GO TO 5.

Page 53 of 4449

INFINITI FX35 2004 Service Manual ACS-44
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
3. BRAKE SWITCH INSTALLATION AND ADJUSTMENT INSPECTION
Check brake switch for proper installation and a

Page 54 of 4449

INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-45
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7. CHECK ICC BRAKE HOLD RELAY CIRCUIT
1. Disconnect connectors of ICC unit an

Page 55 of 4449

INFINITI FX35 2004 Service Manual ACS-46
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
3. CHECK ICC STEERING SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect connectors of ECM

ACS-46
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
3. CHECK ICC STEERING SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect connectors of ECM and spiral cable.
3. Check continuity between ECM harness connector M90 terminal
82 (B/W), 99 (G/Y) and spiral cable M15 terminal 33 (B/W), 34
(G/Y).
4. Check continuity between spiral cable (on vehicle) harness con-
nector M15 terminal 33, 34 and spiral cable (on switch) harness
connector M203 terminal 14,15.
OK or NG
OK >> Replace ECM. Erase DTC and perform ICC system run-
ning test. Then perform self-diagnosis of ICC system
again.
NG >>
Repair harness between ICC unit and spiral cable.
After repair, erase DTC and perform ICC system run-
ning test. Then, perform self-diagnosis of ICC system
again.
DTC 61 PRESS SEN CIRCUITAKS006Z5
1. CHECK CONNECTOR BRAKE PRESSURE SENSOR AND ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect connectors of brake pressure sensor and ICC unit, and connect them securely again. Then
erase DTC. After that, 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 HARNESS BETWEEN BRAKE PRESSURE SENSOR AND ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect connectors of ICC unit and brake pressure sensor.
3. Check continuity between ICC unit harness connector M88 ter-
minal 8 (Y/G), 17 (BR), 24 (Y/R) and brake pressure sensor har-
ness connector E142 terminal 3 (Y/G), 2 (OR), 1 (Y/R).
OK or NG
OK >> GO TO 3.
NG >>
Repair harness between brake pressure sensor and
ICC unit.
After repair, erase DTC and perform ICC system running test. Then, perform self-diagnosis of
ICC system again. 82 - 33, 99 - 34 Continuity should exist.
SKIA5978E
34 - 14, 33 - 15 Continuity should exist.
SKIA5979E
8 - 3, 17 - 2, 24 - 1 Continuity should exist.
SKIA6652E

Page 56 of 4449

INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-47
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3. CHECK POWER SUPPLY CIRCUIT FOR BRAKE PRESSURE SENSOR
1. Connect ICC unit.

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-47
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3. CHECK POWER SUPPLY CIRCUIT FOR BRAKE PRESSURE SENSOR
1. Connect ICC unit.
2. Turn ignition switch ON.
3. Check voltage between ICC unit harness connector M88 termi-
nal 8 (Y/G) and 24 (Y/R).
OK or NG
OK >>Brake pressure sensor malfunction.
Replace brake pressure sensorBR-13, "BRAKE MAS-
TER CYLINDER" . Erase DTC and perform ICC sys-
tem running test. Then perform self-diagnosis of ICC
system again.
NG >> Replace ICC unit. Clear DTC and perform driving check. Then perform self-diagnosis of ICC sys-
tem again.
DTC 62 BOOSTER SOL/V CIRCUITAKS006Z6
1. CHECK SOLENOID/RELEASE SWITCH AND ICC UNIT CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect connectors of brake booster solenoid/release and ICC unit, and connect them securely again.
Then erase DTC. After that 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 HARNESS BETWEEN SOLENOID/RELEASE SWITCH AND ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector and brake booster solenoid
release switch connector.
3. Check continuity between ICC unit harness connector M88 ter-
minal 10 (B/R), 12 (L/W) and brake booster harness connector
E54 terminal 4 (B), 6 (L).
OK or NG
OK >> GO TO 3.
NG >>
Repair harness between brake booster solenoid/
release switch and ICC unit.
After repair, Erase DTC and perform ICC system running test. Then, perform self-diagnosis of
ICC system again.
3. CHECK BOOSTER SOLENOID
Check booster solenoid. Refer to ACS-65, "Booster Solenoid" .
OK or NG
OK >> Replace ICC unit. Erase DTC and perform ICC system running test. Then perform self-diagnosis
of ICC system again.
NG >>
Replace booster solenoid.
Replace booster solenoid. Erase DTC and perform ICC system running test. Then perform self-
diagnosis of ICC system again. 8 (+) - 24 (–) Approx. 5V
SKIA6653E
10 - 4, 12 - 6 Continuity should exist.
SKIA6654E

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