2004 INFINITI FX35 brake

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-51
[ICC]
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ACS
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-52
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
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
OK >> Replace ICC unit. Erase DTC and perform ICC system running test. Then perform self-diagnosis
of ICC system again.
NG >> GO TO 10.
10. CHECK ICC BRAKE HOLD RELAY
1. Disconnect ICC brake hold relay.
2. Check continuity between ICC brake hold relay E14 terminal 6
and terminal 7.
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 ICC brake hold relay. Erase DTC and perform
ICC system running test. Then perform self-diagnosis of
ICC system again.
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 M89 ter-
minal 47 (W/R) and ICC brake hold relay harness connector E14
terminal 1 (W).
3. Check continuity between ICC unit harness connector M89 ter-
minal 47 (W/R) and ground.
4. Check continuity between ICC brake hold relay harness connec-
tor E14 terminal 2 (B) and ground.
OK or NG
OK >> GO TO 12.
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. Continuity should not exist.
SKIA6659E
47 - 1 Continuity should exist.
47 - Ground Continuity should not exist.
SKIA6660E
Continuity should exist.
SKIA6661E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-53
[ICC]
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ACS
Revision: 2004 November 2004 FX35/FX45
12. CHECK ICC BRAKE HOLD RELAY

Check continuity between ICC brake hold relay terminal 1 and
terminal 2.
OK or NG
OK >> GO TO 13.
NG >> Replace ICC brake hold relay. Erase DTC and perform
ICC system running test. Then perform self-diagnosis of
ICC system again.
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 M89 ter-
minal 47 (W/R) and ground.
OK or NG
OK >> GO TO 14.
NG >> Replace ICC unit. Erase DTC and perform ICC system
running test. Then perform self-diagnosis of ICC system
again.
14. CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
1. Check voltage between ICC brake hold relay harness connector
E14 terminal 6 (GY) and ground.
OK or NG
OK >> GO TO 15.
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. Continuity should exist.
SKIA6662E
47 - Ground Approx. 12V (during active
test)
SKIA3075E
6 - Ground Approx. 12V
SKIA1198E

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

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-61
[ICC]
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Revision: 2004 November 2004 FX35/FX45
2. PERFORM SELF-DIAGNOSIS
With CONSULT-II
1. Perform CONSULT-II self-diagnosis to check for malfunctioning items.
OK or NG
OK >> GO TO 3.
NG >> After repairing or replacing malfunctioning part, erase DTC. Perform ICC system running test, and
then perform self-diagnosis of ICC system again.
3. CHECK SWITCHES AND VEHICLE SPEED SIGNAL
With CONSULT-II
1. With data monitor, check that switches and vehicle speed signal operate normally. Refer to ACS-32,
"DATA MONITOR" .
A: VHCL SPEED SE B: D RANGE SW
C: BRAKE SW D: SET/COAST SW
OK or NG
OK >> After replacing ICC unit, erase DTC. Perform ICC system running test, and then perform self-diag-
nosis of ICC system again.
NG >>

A: Refer to ACS-42, "DTC 41 VHCL SPEED SE CIRC" .

B: Refer to ACS-62, "Symptom 4: The ICC System Is Not Cancelled When the Gear Is in Other
Than ‘D’." .

C: Refer to ACS-43, "DTC 45 BRAKE SW/STOP L SW" .

D: Refer to ACS-45, "DTC 46 OPERATION SW CIRC" .
Symptom 3: The ICC System Cannot Be Operated by the CANCEL Switch,
ACCEL/RES Switch, or DISTANCE Switch.
AKS006ZQ
RESUME does not function in the following cases:

When ON/OFF switch is turned off once.

When the vehicle speed is less than 25 MPH (40 km/h).
1. CHECK SWITCH
With CONSULT-II
1. With data monitor, check that switches operate normally.
“RESUME/ACC SW”, “CANCEL SW”, “DISTANCE ADJ”.Refer to ACS-32, "
DATA MONITOR" .
OK or NG
OK >> After replacing ICC unit, erase DTC. Perform ICC system running test, and then perform self-diag-
nosis of ICC system again.
NG >> GO TO 2.
2. CHECK DIAGNOSIS
With CONSULT-II

Perform self-diagnosis with CONSULT-II. Is “CAN COMM CIRCUIT” indicated?
YES or NO
YES >> Refer to ACS-41, "DTC 20 CAN COMM CIRCUIT" .
NO >> Refer to ACS-45, "
DTC 46 OPERATION SW CIRC" .

ELECTRICAL COMPONENT INSPECTION
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Revision: 2004 November 2004 FX35/FX45
ELECTRICAL COMPONENT INSPECTIONPFP:00000
ICC Steering SwitchAKS006ZX
1. Disconnect ICC steering switch.
2. Check resistance between M203 terminals 14 and 15 by
depressing each switch.
ICC Brake Switch and Stop Lamp SwitchAKS006ZY
Check each switch after adjusting brake pedal, refer to BR-6,
"BRAKE PEDAL" .
Booster SolenoidAKS006ZZ
Disconnect booster solenoid/release switch connector, and check
resistance value between terminals 4 and 6.
Switch Condition Resistance [Ω]
ON/OFF Depressed Approx. 0
Released Approx. 5,456
DISTANCE Depressed Approx. 741
Released Approx. 5,456
ACCEL/RES Depressed Approx. 2,586
Released Approx. 5,456
COAST/SET Depressed Approx. 1,406
Released Approx. 5,456
CANCEL Depressed Approx. 309
Released Approx. 5,456
SKIA5983E
Continuity
ICC brake switch Stop lamp switch
When brake pedal is depressed No Yes
When brake pedal is released Yes No
SKIA5984E
4 - 6 :Approx. 1.4Ω
SKIA1255E

ACS-66
[ICC]
ELECTRICAL COMPONENT INSPECTION
Revision: 2004 November 2004 FX35/FX45
Release SwitchAKS00700
Disconnect booster solenoid/release switch connector and check
resistance between the terminals.
NOTE:
If pedal is depressed insufficiently, resistance value may remain unchanged.Condition 1 - 3 1 - 2 2 - 3
Release the brake pedal.Continuity
should exist.Continuity
should not
exist.Continu-
ity should
not exist.
Depress the brake pedal.Continuity
should not
exist. (Note)Continuity
should
exist.
(Note)Continu-
ity should
not exist.SKIA1256E