2008 INFINITI FX35 Brake

ACS-46
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> INSPECTION END
DTC 90 STOP LAMP RLY FIXINFOID:0000000001328838
1.CHECK CONNECTOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector, and connect it securely again.
3. Erase DTC and perform ICC system running test. T hen perform self-diagnosis of ICC system again.
Is malfunction indicated?
YES >> GO TO 2.
NO >> Poor connector connection 1. Check connector (Check connector housing for disconnected, loose, bent, and collapsed ter-minals. If any malfunction is detected, repair applicable part).
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
2.CHECK STOP LAMP SWITCH AND ICC BRAKE SWITCH
With “Data Monitor” of “ICC”, check that “S TOP LAMP SW” and “BRAKE SW” operate normally.
OK or NG
OK >> GO TO 12.
NG-1 >> “BRAKE SW” NG: GO TO 3.
NG-2 >> “STOP LAMP SW” NG: GO TO 9.
3.CHECK BRAKE SWITCH INSTALLATION AND ADJUSTMENT
Check brake switch for proper installation, and adjust the switch if necessary. Refer to BR-5, "
Inspection and
Adjustment".
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-64, "
ICC Brake Switch and Stop Lamp Switch".
OK or NG
OK >> GO TO 5.
NG >> 1. Replace ICC brake switch. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
5.CHECK ICC BRAKE HOLD RELAY
1. Turn ignition switch OFF.
2. Disconnect ICC brake hold relay.
3. Check ICC brake hold relay. Refer to ACS-64, "
ICC Brake Hold Relay".
OK or NG
OK >> GO TO 6.
NG >> 1. Replace ICC brake hold relay. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
6.CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ICC BRAKE SWITCH
1. Disconnect ICC brake switch connector and ICC unit connector.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-47
< SERVICE INFORMATION > [ICC]
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2. Check continuity between ICC brake hold relay harness connec- tor and ICC brake switch harness connector.
3. Check continuity between ICC brake hold relay harness connec- tor and ground.
OK or NG
OK >> GO TO 7.
NG >> 1. Repair harness between ICC brake hold relay and ICC brake switch. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
7.CHECK HARNESS BETWEEN ICC UNIT AND ICC BRAKE HOLD RELAY
1. Disconnect ECM connector.
2. Check continuity between ICC unit harness connector and ICC brake hold relay harness connector.
3. Check continuity between ICC unit harness connector and ground.
OK or NG
OK >> GO TO 8.
NG >> 1. Repair harness between ICC unit and ICC brake hold relay. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
8.CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between ICC brake switch harness connector and ground.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform I CC system running test.
Then perform self-diagnosis of ICC system again.
NG >> 1. Repair or replace harness or fuse. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
9.CHECK STOP LAMP ILLUMINATION
ICC brake hold
relay connector Te r m i n a lICC brake switch
connector Terminal Continuity
E14 3 E209 2 Yes
ICC brake hold
relay connector Te r m i n a l
Ground Continuity
E14 3 No
PKIB4167E
ICC unit connector Terminal ICC brake hold relay
connector Terminal Continuity
M89 29 E14 4 Yes
ICC unit connector Terminal GroundContinuity
M89 29 No
SKIA5980E
ICC brake switch connector Te r m i n a l
Voltage (Approx.)
(+) ( −)
E209 1 Ground Battery voltage
PKIB4168E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

ACS-48
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
1. Turn ignition switch OFF.
2. Disconnect ICC brake hold relay.
3. Check stop lamp circuit.
OK or NG
OK >> GO TO 10.
NG >> After repairing, erase DTC and perform ICC system running test. Then perform self-diagnosis of
ICC system again.
10.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 >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NG >> GO TO 11.
11 .CHECK ICC BRAKE HOLD RELAY
1. Disconnect ICC brake hold relay.
2. Check ICC brake hold relay. Refer to ACS-64, "
ICC Brake Hold Relay".
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NG >> 1. Replace ICC brake hold relay.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
12. CHECK HARNESS BETWEEN ICC UN IT AND ICC BRAKE HOLD RELAY
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector and ICC brake hold relay.
3. Check continuity between ICC unit harness connector and ICC brake hold relay harness connector.
4. Check continuity between ICC unit harness connector and ground.
OK or NG
OK >> GO TO 13.
NG >> 1. Repair harness between ICC unit and ICC brake hold relay. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
13.CHECK ICC BRAKE HOLD RELAY GROUND CIRCUIT
ICC unit connector Terminal ICC brake hold relay
connector Terminal Continuity
M89 47 E14 1 Yes
ICC unit connector Terminal GroundContinuity
M89 47 No
SKIA6660E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-49
< SERVICE INFORMATION > [ICC]
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Check continuity between ICC brake hold relay harness connector
and ground.
OK or NG
OK >> GO TO 14.
NG >> 1. Repair harness between ICC brake hold relay and ground.
2. Erase DTC and perform I CC system running test.
Then perform self-diagnosis of ICC system again.
14.CHECK ICC BRAKE HOLD RELAY
Check ICC brake hold relay. Refer to ACS-64, "
ICC Brake Hold Relay".
OK or NG
OK >> GO TO 15.
NG >> 1. Replace ICC brake hold relay. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
15.CHECK ICC UNIT ST ANDARD VOLTAGE
1. Connect ICC unit connector and stop lamp switch connector.
2. Perform “Active Test” (“STOP LAMP”: “STP LMP DRIVE ON”) with CONSULT-III, check vo ltage between ICC unit harness
connector and ground.
OK or NG
OK >> GO TO 16.
NG >> 1. Replace ICC unit. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
16.CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
Check voltage between ICC brake hold relay harness connector and
ground.
OK or NG
OK >> GO TO 17.
NG >> 1. Repair or replace harness or fuse. 2. Erase DTC and perform I CC system running test.
Then perform self-diagnosis of ICC system again.
17.CHECK HARNESS BETWEEN ICC UNIT AND ICC BRAKE HOLD RELAY
1. Turn ignition switch OFF.
ICC brake hold re- lay connector Te r m i n a l
Ground Continuity
E14 2 Yes
SKIA6661E
ICC unit
connector Te r m i n a l
ConditionVoltage (Ap-
prox.)
(+) ( −)
M89 47 Ground During “Active Test” 12 V
SKIA3075E
ICC brake hold relay con- nector Te r m i n a l
Voltage (Ap-
prox.)
(+) ( −)
E14 6 Ground Battery voltage
SKIA1198E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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ACS-50
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
2. Disconnect ICC unit.
3. Check continuity between ICC unit harness connector and ICC
brake hold relay harness connector.
4. Check continuity between ICC unit harness connector and ground.
OK or NG
OK >> GO TO 18.
NG >> 1. Repair harness between ICC unit and ICC brake hold relay. 2. Erase DTC and perform ICC system running test. Then, perform self-diagnosis of ICC system
again.
18.CHECK ICC BRAKE HOLD RELAY
1. Connect ICC unit connector and ICC brake hold relay.
2. Disconnect stop lamp switch connector.
3. Perform “Active Test” (“STOP LAMP”) with CONSULT-II I, and make sure that stop lamp is illuminated.
OK or NG
OK >> GO TO 19.
NG >> 1. Replace ICC brake hold relay. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
19.CHECK ICC UNIT STANDARD VOLTAGE
1. Connect stop lamp switch connector.
2. Perform “Active Test” (“STOP LAMP”: “STP LMP DRIVE ON”) with CONSULT-III, check voltage between ICC unit harness
connector and ground.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NG >> 1. Replace stop lamp switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 92 ECM CIRCUITINFOID:0000000001328839
1.PERFORM SELF-DIAGNOSIS OF ICC SYSTEM
1. Perform self-diagnosis of ICC system.
2. Check if “DTC 20 CAN COMM CIRCUIT” other than “D TC 92 ECM CIRCUIT” is indicated in self-diagnosis
item in the display.
ICC unit
connector Te r m i n a l
ICC brake hold
relay connector Terminal Continuity
M89 38 E14 7 Yes
SKIA6663E
ICC unit
connector Te r m i n a l
GroundContinuity
M89 38 No
ICC unit
connector Te r m i n a l
ConditionVoltage (Ap-
prox.)
(+) ( −)
M89 29 Ground During “Active Test” 0 V
SKIA1200E
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ACS-56
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
OK or NG
OK >> GO TO 3.
NG >> Poor connector connection
1. Repair ICC unit connector.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
3.PERFORM SELF-DIAGNOSIS OF ICC SYSTEM
1. Perform self-diagnosis of ICC system.
2. Check if “DTC 20 CAN COMM CIRCUIT” is indicated.
Is it indicated?
YES >> Refer to ACS-36, "DTC 20 CAN COMM CIRCUIT".
NO >> Refer to ACS-40, "
DTC 46 OPERATION SW CIRC".
Symptom 2 ICC System Cannot Be Set (MAIN Switch Turns ON/OFF)INFOID:0000000001328850
The ICC cannot be set in the following cases.
 When the vehicle speed is not in range of approx . 40 km/h (25 MPH) to 144 km/h (90 MPH).
 When the A/T selector lever is in gears other than “D” and “M” position.
 While the brake is in operation.
1.CHECK CAUSE OF AUTOMATIC CANCELLATION
With “CAUSE OF AUTO-CANCEL” in “Work Support” , check if any cause of cancellation exists.
OK or NG
OK >> Cancel with appropriate cause, and go to specified diagnosis.  “OPE SW VOLT CIRC”: Refer to ACS-40, "
DTC 46 OPERATION SW CIRC".
 “VHCL SPD UNMATCH”: Refer to ACS-37, "
DTC 41 VHCL SPEED SE CIRC".
 “IGN LOW VOLT”: Refer to ACS-37, "
DTC 31 POWER SUPPLY CIR, DTC 34 POWER SUPPLY
CIR 2".
NG >> GO TO 2.
2.PERFORM SELF-DIAGNOSIS OF ICC SYSTEM
Perform self-diagnosis of ICC syste m to check for malfunctioning items.
OK or NG
OK >> GO TO 3.
NG >> 1. Repair or replace applicable item. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
3.CHECK SWITCHES AND VE HICLE SPEED SIGNAL
With “Data Monitor” of “ICC”, check that s witches and vehicle speed signal operate normally.
 VHCL SPEED SE
 D RANGE SW
 BRAKE SW
 SET/COAST SW
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and Perform ICC system running test. Then perform self-diagnosis of ICC systemagain.
NG-1 >> “VHCL SPEED SE” NG: Refer to ACS-37, "
DTC 41 VHCL SPEED SE CIRC".
NG-2 >> “D RANGE SW” NG: Refer to ACS-57, "
Symptom 4 ICC System Is Not Cancelled When the A/T
Selector Lever Is in Other Than "D" and "M" Position".
NG-3 >> “BRAKE SW” NG: Refer to ACS-38, "
DTC 45 BRAKE SW/STOP L SW".
NG-4 >> “SET/COAST SW” NG: Refer to ACS-40, "
DTC 46 OPERATION SW CIRC".
Symptom 3 ICC System Cannot Be Operated by CANCEL Switch, RESUME/ACCEL-
ERATE Switch or DISTANCE Switch
INFOID:0000000001328851
RESUME does not function in the following cases.
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ELECTRICAL COMPONENT INSPECTIONACS-63
< SERVICE INFORMATION > [ICC]
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ELECTRICAL COMPONENT INSPECTION
ICC Steering SwitchINFOID:0000000001328857
1. Disconnect ICC steering switch.
2. Check resistance between ICC steering switch connector termi- nals by pressing each switch.
Booster SolenoidINFOID:0000000001328858
Disconnect booster solenoid/release switch connector, and measure
resistance between terminals 4 and 6.
Release SwitchINFOID:0000000001328859
Disconnect booster solenoid/release switch connector and check
resistance between the terminals.
NOTE:
If pedal is depressed insufficiently, resistance value may remain unchanged. Terminals Switch Condition Resistance [k
Ω]
14 15 MAIN
Pressed Approx. 0
Released Approx. 5.5
CANCEL Pressed Approx. 0.3
Released Approx. 5.5
DISTANCE Pressed Approx. 0.7
Released Approx. 5.5
SET/COAST Pressed Approx. 1.4
Released Approx. 5.5
RESUME/ACCELERATE Pressed Approx. 2.6
Released Approx. 5.5
PKIB4169E
Terminals Resistance [
Ω]
4 6 Approx. 1.4
PKIC5181E
Condition 1 - 3 1 - 2 2 - 3
Release
the brake pedal. Continuity should
exist. Continuity should
not exist. Continuity should
not exist.
Depress
the brake pedal. Continuity should
not exist. (Note) Continuity should
exist. (Note) Continuity should
not exist.
SKIA1256E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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ACS-64
< SERVICE INFORMATION >[ICC]
ELECTRICAL COMPONENT INSPECTION
ICC Brake Switch and Stop Lamp Switch
INFOID:0000000001328860
Check each switch after adjusting brake pedal, refer to BR-5.
ICC Brake Hold RelayINFOID:0000000001328861
Disconnect ICC brake hold relay, and check continuity between ter-
minals.
ConditionContinuity
ICC brake switch Stop lamp switch
When brake pedal is depressed No Yes
When brake pedal is released Yes No
SKIA5984E
Terminals Condition Continuity
34 Applying battery voltage to be-
tween terminals 1 and 2. No
67 Yes
34 No battery voltage Ye s
67 No
PKIC4924E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C