2004 INFINITI FX35 ignition

ACS-48
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
DTC 63 RELEASE SW CIRCUITAKS006Z7
1. CHECK SOLENOID/RELEASE SWITCH AND ICC UNIT CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect brake booster solenoid/release switch connector and ICC unit connector, 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 SOLENOID/RELEASE SWITCH AND ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect brake booster solenoid/release switch connector
and ICC unit connector.
3. Check continuity between ICC unit harness connector m88 ter-
minal 6 (GY/L), 15 (LG/R), 22 (G/Y) and Brake booster harness
connector E54 terminal 1 (R), 3 (LG), 2 (G).
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 RELEASE SWITCH POWER SUPPLY CIRCUIT
1. Connect ICC unit connector.
2. Turn ignition switch ON.
3. Check voltage between ICC unit harness connector M88 termi-
nal 6 (GY/L) and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace ICC unit. Erase DTC and perform ICC system
running test. Then perform self-diagnosis of ICC system
again.
4. CHECK RELEASE SWITCH

Check release switch. Refer to ACS-66, "Release Switch" .
OK or NG
OK >> Replace ICC unit. Erase DTC and perform ICC system running test. Then perform self-diagnosis
of ICC system again.
NG >>

Release switch malfunction.

Replace booster. Erase DTC and perform ICC system running test. Then perform self-diagno-
sis of ICC system again. 6 - 1, 15 - 3, 22 - 2 Continuity should exist.
SKIA6655E
Approx. 10V
SKIA6656E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-49
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Revision: 2004 November 2004 FX35/FX45
DTC 65 PRESSURE CONTROLAKS006Z8
1. OPERATION CHECK

Check foot brake pedal operates normally.
OK or NG
OK >> GO TO 2.
NG >>

Check brake circuit.

After repair, Erase DTC, and perform active test (BOOSTER SOL/V3) with CONSULT-II. Then
perform self-diagnosis of ICC system again.
2. CHECK BOOSTER SOLENOID

Check booster solenoid. Refer to ACS-65, "Booster Solenoid" .
OK or NG
OK >> GO TO 3.
NG >>

Solenoid malfunction.

Replace booster. Erase DTC and perform ICC system running test. Then perform self-diagno-
sis of ICC system again.
3. 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 solenoid/release
harness connector E54 terminal 4 (B), 6 (L).
OK or NG
OK >> Replace ICC unit. Erase DTC and perform ICC system
running test. Then perform self-diagnosis of ICC system
again.
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.
DTC 74 LASER BEAM OFF CNTRAKS006Z9
1. DIAGNOSTIC CHECK
1. Adjust laser beam aiming. Then erase DTC, and perform ICC system ICC system running test.
2. After that, perform self-diagnosis of ICC system. Is DTC 74 LASER BEAM OFF CNTR indicated?
YES or NO
YES >>
Replace ICC sensor, and adjust laser beam aiming.

After that, Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC
system again.
NO >> INSPECTION END10 - 4, 12 - 6 Continuity should exist.
SKIA6654E

ACS-50
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
DTC 90 STOP LAMP RLY FIXAKS006ZE
1. CHECK CONNECTOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect and check ICC unit connector.
OK or NG
OK >> GO TO 2.
NG >>

Connector malfunction.

After repair, erase DTC, and perform ICC system running test. Then perform self-diagnosis of
system.
2. CHECK STOP LAMP SWITCH, AND ICC BRAKE SWITCH
With CONSULT-II
1. Connect ICC unit connector and turn ignition switch ON.
2. With data monitor, check that “STOP LAMP SW” and “BRAKE SW” operate normally.Refer to ACS-32,
"DATA MONITOR" .
OK or NG
OK >> GO TO 11.
NG >>

BRAKE SW: GO TO 3.

STOP LAMP SW: GO TO 8.
3. CHECK AND ADJUST BRAKE SWITCH

Check brake switch for proper installation and adjust if necessary.Refer to BR-6, "BRAKE PEDAL" in
“BR”.
OK or NG
OK >> GO TO 4.
NG >> After adjustment, erase DTC and perform ICC system running test. Then perform self-diagnosis
of ICC system again.
4. CHECK ICC BRAKE SWITCH AND STOP LAMP SWITCH

Check ICC brake switch and stop lamp switch. Refer to ACS-65, "ICC Brake Switch and Stop Lamp
Switch" .
OK or NG
OK >> GO TO 5.
NG >> Replace ICC brake switch. Erase DTC and perform ICC system running test. Then perform self-
diagnosis of ICC system again.
5. CHECK ICC BRAKE HOLD RELAY

Disconnect ICC brake hold relay, and check continuity between
ICC brake hold relay terminal 3 and terminal 4.
OK or NG
OK >> GO TO 6.
NG >> Replace ICC brake hold relay. Erase DTC and perform
ICC system running test. Then perform self-diagnosis of
ICC system again.
Continuity should exist.
SKIA6658E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-51
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Revision: 2004 November 2004 FX35/FX45
6. CHECK HARNESS THROUGH ICC BRAKE HOLD RELAY, ICC BRAKE SWITCH, ICC UNIT
1. Disconnect ICC brake hold relay, ICC brake switch, ECM and
ICC unit harness connector.
2. Check continuity between ICC brake hold relay harness connec-
tor E14 terminal 3 (L) and ICC brake switch harness connector
E209 terminal 2 (L).
3. Check continuity between ICC brake hold relay harness connec-
tor E14 terminal 3 (L) and ground.
4. Check continuity between ICC brake hold relay harness connec-
tor E14 terminal 4 (SB) and ICC unit harness connector M89 ter-
minal 29 (SB).
5. Check continuity between ICC unit harness connector M89 ter-
minal 29 (SB) and ground.
OK or NG
OK >> GO TO 7.
NG >>

Repair harness between ICC brake hold relay and
ICC brake switch.

Repair harness between ICC brake switch and ICC unit.

After repair, erase DTC and perform ICC system running test. Then, perform self-diagnosis of
ICC system again.
7. CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between ICC brake switch harness connector
E209 terminal 1 (Y) and ground.
OK or NG
OK >> Replace ICC unit. Erase DTC and perform ICC system
running test. Then perform self-diagnosis of ICC system
again.
NG >>

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

After repair, erase DTC and perform ICC system running test. Then, perform self-diagnosis of
ICC system again.
8. CHECK STOP LAMP ILLUMINATION
1. Turn ignition switch OFF.
2. Disconnect ICC brake hold relay connector.
3. Check stop lamp circuit.
OK or NG
OK >> GO TO 9.
NG >> After repair, erase DTC and perform ICC system running test. Then, perform self-diagnosis of ICC
system again. Continuity should exist.
Continuity should not exist.
SKIA6198E
Continuity should exist.
Continuity should not exist.
SKIA5980E
Approx. 12V
SKIA5981E

ACS-54
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
15. CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect connectors of ICC brake hold relay and ICC unit.
3. Check continuity between ICC brake hold relay harness connec-
tor E14 terminal 7 (P) and ICC unit harness connector M89 ter-
minal 38 (P/G).
4. Check continuity between ICC unit harness connector M89 ter-
minal 38 (P/G) and ground.
OK or NG
OK >> GO TO 16.
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.
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
OK >> GO TO 17.
NG >> Replace ICC brake hold relay. Erase DTC and perform ICC system running test. Then perform
self-diagnosis of ICC system again.
17. CHECK ICC UNIT STANDARD VOLTAGE
With CONSULT-II
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 M89 terminal 29 (SB) and ground.
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 stop lamp switch.Erase DTC and perform ICC
system running test. Then perform self-diagnosis of ICC
system again.
DTC 92 ECM CIRCUITAKS006ZF
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 2.7 - 38 Continuity should exist.
38 - Ground Continuity should not exist.
SKIA6663E
29 - Ground Approx. 0V (during active test)
SKIA1200E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-55
[ICC]
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Revision: 2004 November 2004 FX35/FX45
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 96 NP RANGEAKS007HD
1. CHECK CONNECTOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect connector of 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 NP RANGE SWITCH SIGNAL
With CONSULT-II

With data monitor, check that “NP RANGE SW” operate normally.Refer to ACS-32, "DATA MONITOR" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK HARNESS BETWEEN ICC UNIT AND TCM
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness connector and A/T assembly har-
ness connector.
3. Check continuity between ICC unit harness connector M88 ter-
minal 7 (GY/R) and A/T assembly harness connector F44 termi-
nal 9 (GY).
OK or NG
OK >> Replace 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 TCM.

After repair, erase DTC and perform ICC system running test. Then, perform self-diagnosis of
ICC system again.
7 - 9 Continuity should exist.
SKIA5982E

ACS-60
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2004 November 2004 FX35/FX45
Symptom 1: ON/OFF Switch Does Not Switch ON*1 . ON/OFF Switch Does Not
Switch OFF
*2 .AKS006ZO
NOTE:

*1:The ICC system display in the combination meter does not illuminate.

*2:The ICC system display in the combination meter remains powered.
1. CHECK ON/OFF SWITCH
With CONSULT-II

With data monitor, check that ON/OFF switch operates normally.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK CONNECTOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector.
3. Check connector housing for disconnected, loose, bent, and collapsed terminals.
OK or NG
OK >> GO TO 3.
NG >>

Poor connector connection.

Repair ICC unit connector. After repair, erase DTC and perform ICC system running test. Then
perform self-diagnosis of ICC system again.
3. DIAGNOSIS CHECK
With CONSULT-II

Perform self-diagnosis with CONSULT-II.Is“CAN COMM CIRCUIT”indicated?
YES or NO
YES >> Refer toACS-41, "DTC 20 CAN COMM CIRCUIT"
NO >> Refer toACS-45, "DTC 46 OPERATION SW CIRC"
Symptom 2: The ICC System Cannot Be Set (ON/OFF Switch Turns On/Off).AKS006ZP
The ICC cannot be set in the following cases.

When the vehicle speed is not in range of approx. 25 MPH (40 km/h) to 90 MPH (144 km/h).

When the A/T selector lever is in gears other than ‘D’.

While the brake is in operation.
1. CHECK OF CAUSE OF AUTOMATIC CANCELLATION
With CONSULT-II
1. With “CAUSE OF AUTO-CANCEL” in work support, check if any cause of cancellation exists.
OK or NG
OK >>
Cancel with appropriate cause.

For causes A, B, or C, go to specified diagnosis.
A:“OPE SW VOLT CIRC” : Refer to ACS-45, "
DTC 46 OPERATION SW CIRC" .
B:“ VHCL SPD UNMATCH” : Refer to ACS-42, "
DTC 41 VHCL SPEED SE CIRC" .
C:“IGN LOW VOLT” : Refer to ACS-42, "
DTC 31 POWER SUPPLY CIR, DTC 34
POWER SUPPLY CIR 2" .
NG >> GO TO 2.

TROUBLE DIAGNOSIS FOR SYMPTOMS
ACS-63
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Revision: 2004 November 2004 FX35/FX45
2. CAN COMMUNICATION INSPECTION
With CONSULT-II
1. With CONSULT-II self-diagnosis, check that “CAN COMM CIRCUIT” item exists.
OK or NG
OK >> Refer to ACS-41, "DTC 20 CAN COMM CIRCUIT" .
NG >> After replacing combination meter, erase DTC. Perform ICC system running test, and then per-
form self-diagnosis of ICC system again.
Symptom 6: Driving Force Is Hunting.AKS006ZU
1. CHECK ECM
1. Perform self-diagnosis of ECM.
OK or NG
OK >> Refer toACS-63, "Symptom 7: The ICC System Frequently Cannot Detect the Vehicle Ahead/The
Detection Zone Is Short." .
NG >> After repairing applicable parts, erase DTC. Perform ICC system running test, and then perform
self-diagnosis of ICC system again.
Symptom 7: The ICC System Frequently Cannot Detect the Vehicle Ahead/The
Detection Zone Is Short.
AKS006ZV
The detection function may become unstable in the following cases:

When the reflector of the vehicle ahead is deficient/ not clean enough to reflect the radar.

When driving a road with extremely sharp corners.

When the radar cannot detect the reflector of the vehicle ahead as the vehicle ahead is passing a hill or
passing the peak.
1. VISUAL CHECK
1. Check ICC sensor body window for contamination and foreign materials.
OK or NG
OK >> If any contamination or foreign materials are found, remove them. Then perform ICC system run-
ning test.
NG >> GO TO 2.
2. CHECK FUNCTION
1. After adjusting ICC sensor beam aiming, perform ICC system running test. Check that preceding vehicle
detection performance has been improved.
OK or NG
OK >> INSPECTION END
NG >>

Replace ICC sensor, and perform laser beam aiming adjustment.

After performing above. Perform ICC system running test, and then perform self-diagnosis of
ICC system again.
Symptom 8: The System Does Not Detect the Vehicle Ahead at All.AKS006ZW
1. VISUAL CHECK
1. With ignition switch turned ON (engine not started), check that all indicator lamps in ICC system display
are continuously lit. (Check for a missing segment in preceding vehicle detection display.)
OK or NG
OK >> GO TO 2.
NG >> Check for combination meter. Refer to DI-13, "
How to Proceed With Trouble Diagnosis" in DI.