INFINITI FX35 2008 Repair Manual

ACS-54
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
2. Check if “DTC 11 CONTROL UNIT” or “DTC 20 CAN COMM CIRCUIT” item other then “DTC 103 LASER
SENSOR FAIL” is indicated in self-diagnosis item in the display.
Is any indicated?
YES >> Go to applicable item inspection. Refer to ACS-36, "DTC 11 CONTROL UNIT", and ACS-36,
"DTC 20 CAN COMM CIRCUIT".
NO >> 1. Replace ICC sensor, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 104 LASER AIMING INCMPINFOID:0000000001328845
1.CHECK DIAGNOSIS
1. Adjust laser beam aiming. Erase DTC and perform ICC system running test.
2. After that, perform self-diagnosis of ICC system.
3. Check if “DTC 104 LASER AIMING INCMP” is indicated.
Is it indicated?
YES >> 1. Replace ICC sensor, and adjust laser beam aiming. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> INSPECTION END
DTC 107 LASER COMM FAILINFOID:0000000001328846
1.PERFORM SELF-DIAGNOSIS OF ICC SYSTEM
1. Perform self-diagnosis of ICC system.
2. Check if “DTC 11 CONTROL UNIT” or “DTC 20 CAN COMM CIRCUIT” item other than “DTC 107 LASER
COMM FAIL” is indicated in the se lf-diagnosis item in the display.
Is any indicated?
YES >> Go to applicable item inspection. Refer to ACS-36, "DTC 11 CONTROL UNIT", and ACS-36,
"DTC 20 CAN COMM CIRCUIT".
NO >> 1. Replace ICC sensor, and adjust laser beam aiming. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 109 LASER HIGH TEMPINFOID:0000000001328847
1.CHECK SYMPTOM
Check if cooling system malfunctions.
Does it malfunction?
YES >> 1. Repair cooling system. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> 1. Replace ICC sensor, and adjust laser beam aiming. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
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TROUBLE DIAGNOSIS FOR SYMPTOMSACS-55
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TROUBLE DIAGNOSIS FOR SYMPTOMS
Symptom ChartINFOID:0000000001328848
Symptom 1 MAIN Switch Does Not Turn ON*1, MAIN Switch Does Not Turn OFF*2
INFOID:0000000001328849
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 MAIN SWITCH
With “Data Monitor” of “ICC”, check that MAIN 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.
Symptoms Reference page
Operation MAIN switch does not switch ON.
Symptom 1
ACS-55
MAIN switch does not switch OFF. Symptom 1
ACS-55
Cruise does not function for setting (powering functions). Symptom 2
ACS-56
CANCEL switch does not function. Symptom 3
ACS-56
Resume does not function. Symptom 3
ACS-56
Set speed does not increase. Symptom 3
ACS-56
Set distance to the vehicle ahead cannot be changed. Symptom 3
ACS-56
ICC is not cancelled when the A/T selector lever is in other
than “D” and “M” position. Symptom 4
ACS-57
Display/Chime ICC system display does not appear.
Check combination meter. Refer to
DI-15, "
Trou-
ble Diagnosis".
Chime does not function. Symptom 5
ACS-57
Control Driving force is hunting. Symptom 6
ACS-58
Function to detect
the vehicle ahead System frequently cannot detect the vehicle ahead.
Symptom 7
ACS-58
Distance to detect the vehicle ahead is short. Symptom 7
ACS-58
System misidentifies a vehicle even though there is no vehi-
cle ahead. Refer to
ACS-14.
Refer to ACS-11, "
ICC System Running Test".
System misidentifies a vehicle in the next lane. Refer to
ACS-14
.
Refer to ACS-11, "
ICC System Running Test".
System does not detect a vehicle at all. Symptom 8
ACS-59
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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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TROUBLE DIAGNOSIS FOR SYMPTOMSACS-57
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 When MAIN switch is turned off once.
 When the vehicle speed is less than 40 km/h (25 MPH).
1.CHECK SWITCHES
With “Data Monitor” of “ICC”, check that switches operate normally.
 “RESUME/ACC SW”
 “CANCEL SW”
 “DISTANCE ADJ”
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
NG >> GO TO 2.
2.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 4 ICC System Is Not Cancelled Wh en the A/T Selector Lever Is in Other
Than "D" and "M" Position
INFOID:0000000001328852
1.CHECK D RANGE SWITCH
With “Data Monitor” of “ICC”, check that “D RANGE SW” operates normally.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
NG >> GO TO 2.
2.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 >> GO TO 3.
3.CHECK D RANGE SWITCH
With TCM “Data Monitor” of “ICC”, check that “D” position switch operates normally.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
NG >> 1. Repair or replace applicable item. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
Symptom 5 Chime Does Not SoundINFOID:0000000001328853
The chime may not sound occasionally in the following cases even if the distance from the vehicle ahead is
short:
 When the speed difference from that of the vehicle ahead is small (both vehicles driving at similar speed).
 When the vehicle ahead drives at faster s peed (the actual distance is increasing).
 When depressing the accelerator.
 Chime does not sound when the vehicle is not driving.
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ACS-58
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
 Chime does not sound when the system does not det
ect any vehicle ahead. (Diagnose the conditions under
which the system is detecting the vehicle ahead and when the system is malfunctioning. If there is any mal-
function in detecting the vehicle ahead, check the system following the ACS-58, "
Symptom 7 ICC System
Frequently Cannot Detect the Vehicl e Ahead/ Detection Zone Is Short".
1.CHECK ICC WARNING CHIME
With “Active Test” of “ICC”, check t hat ICC warning chime operates normally.
OK or NG
OK >> Determine preceding vehicle detection status when malfunction occurred. If chime should have
sounded: after replacing ICC unit. Perform ICC system running test, and then perform self-diag-
nosis of ICC system again.
NG >> GO TO 2.
2.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 >> GO TO 3.
3.PERFORM SELF-DIAGNOSIS OF UNIFIED METER AND A/C AMP.
Perform self-diagnosis of unified meter and A/C amp. Refer to DI-27, "
CONSULT-III Function (METER/M&A)".
OK or NG
OK >> 1. Replace combination meter. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NG >> 1. Repair or replace applicable item.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
Symptom 6 Driving Force Is HuntingINFOID:0000000001328854
1.CHECK SELF-DIAGNOSIS OF ECM
Perform self-diagnosis of ECM.
OK or NG
OK >> Refer to ACS-58, "Symptom 7 ICC System Frequently Cannot Detect the Vehicle Ahead/ Detec-
tion Zone Is Short".
NG >> 1. Repair or replace applicable parts.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
Symptom 7 ICC System Frequent ly Cannot Detect the Vehicle Ahead/ Detection Zone
Is Short
INFOID:0000000001328855
The detection function may become unstable in the following cases.
 When the reflector of the vehicle ahead is def icient/ 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
Check ICC sensor body window for contamination and foreign materials.
OK or NG
OK >> If any contamination or foreign materials ar e found, remove them. Then perform ICC system run-
ning test.
NG >> GO TO 2.
2.CHECK FUNCTION
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TROUBLE DIAGNOSIS FOR SYMPTOMSACS-59
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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 >> 1. Replace ICC sensor, and perform laser beam aiming adjustment. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
Symptom 8 the System Does Not De tect the Vehicle Ahead at AllINFOID:0000000001328856
1.VISUAL CHECK 1
With ignition switch turned ON (engine not started), che ck that all indicator lamps in ICC system display are
continuously lit. (Check for a missing segm ent in preceding vehicle detection display.)
OK or NG
OK >> GO TO 2.
NG >> Check for combination meter. Refer to DI-15, "
Trouble Diagnosis".
2. VISUAL CHECK 2
Check ICC sensor body window for c ontamination and foreign materials.
OK or NG
OK >> If any contamination or foreign materials are found, remove them. Perform ICC system running
test.
NG >> GO TO 3.
3.VISUAL CHECK 3
Check ICC sensor body window for cracks and scratches.
OK or NG
OK >> GO TO 4.
NG >> 1. Replace ICC sensor, and perform laser beam aiming adjustment. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
4.ADJUST ICC SENSOR
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 >> 1. Replace ICC sensor, and perform laser beam aiming adjustment.
2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
SELF-DIAGNOSIS BY ICC SYST EM DISPLAY WILL NOT RUNINFOID:0000000001544638
PKIB4144E
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ACS-60
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Possible Irregular Condition
1.CHECK FUSES
Check that any of the fuses is blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK ICC SYSTEM DISPLAY
1. Turn ignition switch ON.
2. Check if all displays illuminate.
Do all displays illuminate?
YES >> GO TO 3.
NO >> GO TO 6.
3.CHECK HARNESS BETWEEN ECM AND ICC STEERING SWITCH
1. Turn ignition switch OFF.
2. Disconnect ECM connector, and check terminals for bend and looseness.
3. Check continuity between ECM harness connector terminals.
Open or short lines Symptoms Malfunction causes
ICC unit power supply malfunction No voltage supply from ignition switch Fuse blown Harness open
Harness shorted
Ground cable not connected Harness open Harness shorted
ICC steering switch malfunction No signal transmitted Harness open Harness shorted
Spiral cable open
Spiral cable shorted
Switch or ECM malfunction
CAN communication system malfunction Signal not transmitted Harness open Harness shorted
CAN communication outside the standard.
Combination meter system malfunction Indication not possible Indicator display malfunction ICC system display segments disappear.
ICC unit malfunction ICC unit internal malfunction.
Unit Power source Fuse No.
ICC unit Ignition switch (ON) 12
Battery 35
ECM connector Terminal Condition Resistance
(Approx.)
M90 82 99 When MAIN switch pressed 0
Ω
When MAIN switch released 5.5 k Ω
PKIB4145E
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TROUBLE DIAGNOSIS FOR SYMPTOMSACS-61
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4. Check continuity between ECM harness connector and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to ACS-63, "
ICC Steering Switch".
OK or NG
OK >> 1. Repair or replace harness between ECM and ICC steering switch. 2. Perform self-diagnosis mode for ICC system.
NG >> 1. Replace ICC steering switch. 2. Perform self-diagnosis mode for ICC system.
5.CHECK SELF-DIAGNOSIS
1. Connect ECM connector.
2. Turn ignition switch ON.
3. Perform self-diagnosis mode for ICC system.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
6.CHECK CONNECTOR FOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector, and c heck terminals for bend and looseness.
3. Connect ICC unit connector.
4. Turn ignition switch ON.
5. Check if all displays illuminate.
Do all displays illuminate?
YES >> Perform self-diagnosis again.
NO >> GO TO 7.
7.CHECK POWER SUPPLY CIRCUIT FOR ICC UNIT
Check voltage between ICC unit harness connector terminals.
OK or NG
OK >> GO TO 8.
NG >> Repair ICC unit power supply harness.
8.CHECK GROUND CIRCUIT FOR ICC UNIT
ECM connector Terminal
GroundContinuity
M90 82
No
99
PKIB4146E
ICC unit connector Te r m i n a l
Voltage (Approx.)
(+) ( −)
M89 33
Ground Battery voltage
42
SKIA1173E
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ACS-62
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector.
3. Check continuity between ICC unit harness connector and
ground.
OK or NG
OK >> GO TO 9.
NG >> Repair ICC unit ground harness.
9.CHECK DISPLAYS
1. Connect ICC unit connector.
2. Turn ignition switch ON.
3. Check if all displays illuminate.
Do all displays illuminate?
YES >> Perform self-diagnosis again.
NO >> GO TO 10.
10.CHECK CAN COMMUNICATION
Perform self-diagnosis with CONSULT-III, and check CAN communication system for malfunction.
OK or NG
OK >> Replace combination meter.
NG >> CAN communication inspection. Refer to ACS-36, "
DTC 20 CAN COMM CIRCUIT".
ICC unit connector Terminal
GroundContinuity
M88 19
Ye s
20
M89 46
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ELECTRICAL COMPONENT INSPECTIONACS-63
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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.
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