2006 INFINITI QX56 Factory Service Manual

headlights alternator fuel reserve bulb fuel filter location oil capacities

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INFINITI QX56 2006 Factory Service Manual ACS-52
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: November 20092006 QX56
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Symptom ChartEKS00BMJ
SymptomsReference page
Operation ON/OFF switch does not switc

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INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMSACS-53
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Symptom 1: ON/OFF Switch Does Not Switch ON*1 , ON/OFF Switch Does Not
Switch OFF
*2EKS00BMK
NO

TROUBLE DIAGNOSIS FOR SYMPTOMSACS-53
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Symptom 1: ON/OFF Switch Does Not Switch ON*1 , ON/OFF Switch Does Not
Switch OFF
*2EKS00BMK
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" on the CONSULT-II, check that ON/OFF switch operates normally.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK ICC UNIT CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness connectors.
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. Erase DTC and perform ICC system running test. Refer to ACS-9,
"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 to ACS-38, "DTC 20 CAN COMM CIRCUIT" .
NO >> Refer to ACS-41, "
DTC 46 OPERATION SW CIRC" .
Symptom 2: The ICC System Cannot Be Set (ON/OFF Switch Turns On/Off)EKS00BML
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 (89 MPH).
When the selector lever is in "N".
While the brake is in operation.
When the windshield wipers are operating.
1. CHECK CAUSE OF AUTOMATIC CANCELLATION
With CONSULT-II
1. With “CAUSE OF AUTO-CANCEL ” in "WORK SUPPORT" on CONSULT-II, check if any cause of cancel-
lation 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-41, "
DTC 46 OPERATION SW CIRC" .
B: “VHCL SPD UNMATCH ”: Refer to ACS-39, "
DTC 41 VHCL SPEED SE CIRC" .
C: “IGN LOW VOLT ” : Refer to ACS-38, "
DTC 31 POWER SUPPLY CIR1, DTC 34
POWER SUPPLY CIR2" .
NG >> GO TO 2.

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INFINITI QX56 2006 Factory Service Manual ACS-54
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TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: November 20092006 QX56
2. PERFORM SELF-DIAGNOSIS
With CONSULT-II
1. Perform CONSULT-II self-diagnosis to check for malfunctioning items.
OK or N

ACS-54
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TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: November 20092006 QX56
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 >> Repair or replace as necessary, erase DTC. Perform ICC system running test. Refer to ACS-9,
"ICC System Running Test" . Then perform self-diagnosis of ICC system again.
3. CHECK SWITCHES AND VEHICLE SPEED SIGNAL
With CONSULT-II
1. With "DATA MONITOR" on the CONSULT-II, check that the following switches and vehicle speed signal operate normally.
A: VHCL SPEED SE B: NP RANGE SW
C: BRAKE SW D: SET/COAST SW
OK or NG
OK >> Replace ICC unit and erase DTC. Refer to ACS-59, "ICC Unit" . Perform ICC system running test.
Refer to ACS-9, "
ICC System Running Test" . Then perform self-diagnosis of ICC system again.
NG >>
A: Refer to ACS-39, "DTC 41 VHCL SPEED SE CIRC" .
B: Refer to ACS-55, "Symptom 4: The ICC System Is Not Cancelled When the Gear Is in ‘N’" .
C: Refer to ACS-40, "DTC 45 BRAKE SW/STOP L SW" .
D: Refer to ACS-41, "DTC 46 OPERATION SW CIRC" .
Symptom 3: The ICC System Cannot Be Operated by the CANCEL Switch,
ACCEL/RES Switch, or DISTANCE Switch
EKS00BMM
RESUME will not function in the following cases:
When ON/OFF switch is pressed once after the ICC system was ON.
When the vehicle speed is less than 32 km/h (20 MPH).
1. CHECK SWITCH
With CONSULT-II
1. With "DATA MONITOR" on the CONSULT-II, check that the following switches operate normally. “RESUME/ACC SW ”, “CANCEL SW ”, “DISTANCE ADJ ”.
OK or NG
OK >> Replace ICC unit and erase DTC. Refer to ACS-59, "ICC Unit" . Perform ICC system running test.
Refer to ACS-9, "
ICC System Running Test" . Then perform self-diagnosis 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-38, "DTC 20 CAN COMM CIRCUIT" .
NO >> Refer to ACS-41, "
DTC 46 OPERATION SW CIRC" .

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INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMSACS-55
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Symptom 4: The ICC System Is Not Cancelled When the Gear Is in ‘N’EKS00BMN
1. CHECK D RANGE

TROUBLE DIAGNOSIS FOR SYMPTOMSACS-55
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Symptom 4: The ICC System Is Not Cancelled When the Gear Is in ‘N’EKS00BMN
1. CHECK D RANGE SWITCH
With CONSULT-II
1. With "DATA MONITOR" on the CONSULT-II, check that “NP RANGE SW” operates normally.
OK or NG
OK >> Replace ICC unit and erase DTC. Refer to ACS-59, "ICC Unit" . Perform ICC system running test.
Refer to ACS-9, "
ICC System Running Test" . Then perform self-diagnosis of ICC system again.
NG >> GO TO 2.
2. CHECK CAN COMMUNICATION
With CONSULT-II
1. With CONSULT-II self-diagnosis, check “CAN COMM CIRCUIT”.
OK or NG
OK >> GO TO 3.
NG >> Refer to ACS-38, "
DTC 20 CAN COMM CIRCUIT" .
3. CHECK NP RANGE SWITCH
1. With "DATA MONITOR" on the CONSULT-II, check that “N” position switch operates normally.
OK or NG
OK >> Replace ICC unit. Refer to ACS-59, "ICC Unit" . Perform ICC system running test. Refer to ACS-
9, "ICC System Running Test" . Then perform self-diagnosis of ICC system again.
NG >> Repair or replace as necessary. Perform ICC system running test. Refer to ACS-9, "
ICC System
Running Test" . Then perform self-diagnosis of ICC system again.
Symptom 5: Chime Does Not SoundEKS00BMO
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 speed (the actual distance is increasing).
When depressing the accelerator.
Chime does not sound when the vehicle is not driving.
Chime does not sound when the system does not detect 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 malfunction in detecting the vehicle ahead. Refer to ACS-56, "
Symptom 7: The ICC System Fre-
quently Cannot Detect the Vehicle Ahead/The Detection Zone is Short" .
1. CHECK ICC WARNING CHIME
With CONSULT-II
1. With "ACTIVE TEST" on the CONSULT-II, check that ICC warning chime operates normally.
OK or NG
OK >> Determine preceding vehicle detection status when malfunction occurred. If chime should have sounded replace ICC unit. Refer to ACS-59, "
ICC Unit" . Perform ICC system running test. Refer
to ACS-9, "
ICC System Running Test" . Then perform self-diagnosis of ICC system again.
NG >> GO TO 2.

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INFINITI QX56 2006 Factory Service Manual ACS-56
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: November 20092006 QX56
2. CAN COMMUNICATION INSPECTION
With CONSULT-II
1. With CONSULT-II self-diagnosis, check “CAN COMM CIRCUIT”.
OK or N

ACS-56
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TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: November 20092006 QX56
2. CAN COMMUNICATION INSPECTION
With CONSULT-II
1. With CONSULT-II self-diagnosis, check “CAN COMM CIRCUIT”.
OK or NG
OK >> Refer to ACS-38, "DTC 20 CAN COMM CIRCUIT" .
NG >> Replace combination meter. Refer to IP-13, "
COMBINATION METER" . Erase DTC and perform
ICC system running test. Refer to ACS-9, "
ICC System Running Test" . Then perform self-diagno-
sis of ICC system again.
Symptom 6: Driving Force Is HuntingEKS00BMP
1. CHECK ECM
1. Perform self-diagnosis of ECM.
OK or NG
OK >> Refer to ACS-56, "Symptom 7: The ICC System Frequently Cannot Detect the Vehicle Ahead/The
Detection Zone is Short" .
NG >> Repair as necessary. Erase DTC and perform ICC system running test. Refer to ACS-9, "
ICC
System Running Test" . Then perform self-diagnosis of ICC system again.
Symptom 7: The ICC System Frequently Cannot Detect the Vehicle Ahead/The
Detection Zone is Short
EKS00BMQ
The detection function may become disrupted in the following cases:
When the reflector of the vehicle ahead is small or not clean enough to reflect the laser.
When driving a road with extremely sharp corners.
When the laser 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. Refer to ACS-9, "
ICC System Running Test" .
NG >> GO TO 2.
2. CHECK FUNCTION
1. After performing laser beam aiming adjustment, perform ICC system running test. Refer to ACS-9, "
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. Refer to ACS-59, "ICC Sen-
sor" .
Perform ICC system running test. Refer to ACS-9, "ICC System Running Test" . Then perform
self-diagnosis of ICC system again.
Symptom 8: The System Does Not Detect the Vehicle Ahead at AllEKS00BMR
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 combination meter. Refer to DI-17, "
How to Proceed With Trouble Diagnosis" .

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INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMSACS-57
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Revision: November 2009 2006 QX56
2. VISUAL CHECK
Check ICC sensor body window for contamination and foreign materials.
OK or NG

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INFINITI QX56 2006 Factory Service Manual ACS-58
[ICC]
ELECTRICAL COMPONENT INSPECTION
Revision: November 20092006 QX56
ELECTRICAL COMPONENT INSPECTIONPFP:00000
ICC Steering SwitchEKS00BMS
1. Disconnect ICC steering switch.
2. Check resistanc

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INFINITI QX56 2006 Factory Service Manual REMOVAL AND INSTALLATIONACS-59
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Revision: November 2009 2006 QX56
REMOVAL AND INSTALLATIONPFP:00000
ICC UnitEKS00BMV
ICC SensorEKS00BMW
CAUTION:
Perform the laser beam

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