Page 57 of 3371
![INFINITI QX56 2004 Factory Service Manual ACS-48
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: August 20072004 QX56
DTC 96 NP RANGEEKS007XH
1. CHECK ICC UNIT CONNECTORS
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness INFINITI QX56 2004 Factory Service Manual ACS-48
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: August 20072004 QX56
DTC 96 NP RANGEEKS007XH
1. CHECK ICC UNIT CONNECTORS
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness](/manual-img/42/57034/w960_57034-56.png)
ACS-48
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: August 20072004 QX56
DTC 96 NP RANGEEKS007XH
1. CHECK ICC UNIT CONNECTORS
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness connectors and connect them securely again. Then erase DTC. Then, per-
form self-diagnosis of ICC system again.
OK or NG
OK >> GO TO 2.
NG >>
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.
2. CHECK NP RANGE SWITCH SIGNAL
With CONSULT-II
With data monitor, check that “NP RANGE SW” operates normally.
OK or NG
OK >> Perform TCM diagnosis. Refer to AT-93, "SELF-DIAGNOSTIC RESULT MODE" .
NG >> GO TO 3.
3. CHECK HARNESS BETWEEN ICC UNIT AND TCM
1. Turn ignition switch OFF.
2. Disconnect ICC unit harness connectors and A/T assembly har-
ness connector.
3. Check continuity between ICC unit harness connector B13 ter-
minal 7 (B/R) and A/T assembly harness connector F9 terminal
9 (B/R).
OK or NG
OK >> Replace ICC unit. Refer to ACS-59, "ICC Unit" . Erase
DTC and perform ICC system running test. Then per-
form 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.
DTC 97 AT CIRCUITEKS007XI
1. CHECK AT CIRCUIT
With CONSULT-II
With TCM diagnosis, check that shift operates normally. Refer to AT-109, "DTC P0705 PARK/NEUTRAL
POSITION SWITCH" .
OK or NG
OK >> Replace ICC unit. Refer to ACS-59, "ICC Unit" . Erase DTC and perform self-diagnosis of ICC
system again.
NG >>
Perform TCM diagnosis.
After repair, erase DTC and perform self-diagnosis of ICC system again.
7 - 9 Continuity should exist.
SKIA5982E
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![INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-49
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Revision: August 20072004 QX56
DTC 98 GEAR POSITIONEKS007XJ
1. DIAGNOSTIC CHECK
With CONSULT-II
Is “DTC 43 VDC/T INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-49
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DTC 98 GEAR POSITIONEKS007XJ
1. DIAGNOSTIC CHECK
With CONSULT-II
Is “DTC 43 VDC/T](/manual-img/42/57034/w960_57034-57.png)
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-49
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DTC 98 GEAR POSITIONEKS007XJ
1. DIAGNOSTIC CHECK
With CONSULT-II
Is “DTC 43 VDC/TCS/ABS CIRC” or “DTC 41 VHCL SPEED SE CIRC” indicated in self-diagnosis display
item?
YES or NO
YES >> Repair or replace applicable item. Erase DTC and perform self-diagnosis of ICC system again.
NO >> GO TO 2.
2. CHECK VEHICLE SPEED SIGNAL
With CONSULT-II
With data monitor, check that “VHCL SPEED SE” is normal.
OK or NG
OK >> GO TO 3.
NG >> Replace ICC unit. Refer to ACS-59, "
ICC Unit" . Erase DTC and perform self-diagnosis of ICC
system again.
3. CHECK SHIFT GEAR POSITION
Check that gear positions are correct in A/T.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. CHECK TCM GEAR POSITION SIGNAL
With CONSULT-II
With TCM data monitor with CONSULT-II, check that gear positions are correct.
OK or NG
OK >> Replace ICC unit. Refer to ACS-59, "ICC Unit" . Erase DTC and perform self-diagnosis of ICC
system again.
NG >>
Perform TCM diagnosis.
After repair, erase DTC and perform self-diagnosis of ICC system again.
5. CHECK TCM TURBINE ROTATION
With CONSULT-II
With TCM diagnosis, check that turbine rpm is normal. Refer to AT-134, "DTC P1716 TURBINE REVOLU-
TION SENSOR" .
OK or NG
OK >> Replace ICC unit. Refer to ACS-59, "ICC Unit" . Erase DTC and perform self-diagnosis of ICC
system again.
NG >>
Perform TCM diagnosis.
After repair, erase DTC and perform self-diagnosis of ICC system again.
DTC 102 LASER STAINEKS007XK
1. VISUAL INSPECTION (1)
Check that there is no contamination and foreign material on ICC sensor body window.
OK or NG
OK >> GO TO 2.
NG >>
Clean ICC sensor.
Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
Page 59 of 3371
![INFINITI QX56 2004 Factory Service Manual ACS-50
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: August 20072004 QX56
2. VISUAL INSPECTION (2)
Check ICC sensor body window for cracks.
OK or NG
OK >> GO TO 3.
NG >>
Replace ICC se INFINITI QX56 2004 Factory Service Manual ACS-50
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: August 20072004 QX56
2. VISUAL INSPECTION (2)
Check ICC sensor body window for cracks.
OK or NG
OK >> GO TO 3.
NG >>
Replace ICC se](/manual-img/42/57034/w960_57034-58.png)
ACS-50
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: August 20072004 QX56
2. VISUAL INSPECTION (2)
Check ICC sensor body window for cracks.
OK or NG
OK >> GO TO 3.
NG >>
Replace ICC sensor and adjust laser beam. Refer to ACS-12, "LASER BEAM AIMING
ADJUSTMENT" .
After that, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC
system again.
3. ASK CUSTOMER FOR DRIVING CONDITIONS
1. Is there any trace of contamination or foreign material on ICC sensor?
2. Is there any possibility that vehicle was driven in snow or ICC sensor was frosted?
3. Is there any possibility that ICC sensor was fogged temporarily? (Front window glass may have also been
fogged.)
Ye s o r N o
Yes >> Explain system operation and parameters to customer. System may be operating normally.
No >>
Replace ICC sensor and adjust laser beam aiming. Refer to ACS-59, "ICC Sensor" .
After that, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC
system again.
DTC 103 LASER SENSOR FAILEKS007XL
1. DIAGNOSTIC CHECK
Are “DTC 11 CONTROL UNIT” or “DTC 20 CAN COMM CIRCUIT” item indicated in self-diagnosis display
item?
YES or NO
YES >> GO TO APPLICABLE ITEM INSPECTION. Refer to ACS-37, "DTC 11 CONTROL UNIT" , and
ACS-38, "
DTC 20 CAN COMM CIRCUIT" .
NO >>
Replace ICC sensor and adjust laser beam aiming. Refer to ACS-59, "ICC Sensor" .
After that, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC
system again.
DTC 104 LASER AIMING INCMPEKS007XM
1. DIAGNOSTIC CHECK
1. Adjust laser beam aiming. Refer to ACS-12, "
LASER BEAM AIMING ADJUSTMENT" . Erase DTC and
perform ICC system running test.
2. After that, perform self-diagnosis of ICC system. Is “DTC 104 LASER AIMING INCMP” indicated?
CAUTION:
Ensure that laser beam aiming apparatus is set up accurately.
YES or NO
YES >>Replace ICC sensor and adjust laser beam aiming. Refer to ACS-59, "ICC Sensor" .
After that, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC
system again.
NO >> Inspection end.
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ACS-51
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Revision: August 20072004 QX56
DTC 107 LASER COMM FAILEKS007XN
1. DIAGNOSTIC CHECK
Is “DTC 11 CONTROL UNIT” or INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
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DTC 107 LASER COMM FAILEKS007XN
1. DIAGNOSTIC CHECK
Is “DTC 11 CONTROL UNIT” or](/manual-img/42/57034/w960_57034-59.png)
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-51
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DTC 107 LASER COMM FAILEKS007XN
1. DIAGNOSTIC CHECK
Is “DTC 11 CONTROL UNIT” or “DTC 20 CAN COMM CIRCUIT” indicated in the self-diagnosis display
item?
YES or NO
YES >> GO TO applicable item inspection. Refer to ACS-37, "DTC 11 CONTROL UNIT" , and ACS-38,
"DTC 20 CAN COMM CIRCUIT" .
NO >>
Replace ICC sensor and adjust laser beam aiming. Refer to ACS-59, "ICC Sensor" .
After that, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC
system again.
DTC 109 LASER HIGH TEMPEKS007XO
1. CHECK SYMPTOM
Is cooling system malfunctioning?
YES or NO
YES >>Repair cooling system.
After that, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC
system again.
NO >>
Replace ICC sensor and adjust laser beam aiming. Refer to ACS-59, "ICC Sensor" .
After repair, erase DTC. Then perform ICC system running test, and perform self-diagnosis of
ICC unit.
Page 61 of 3371
![INFINITI QX56 2004 Factory Service Manual ACS-52
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Symptom ChartEKS007XR
Symptoms Reference page
OperationON/OFF switch does not switch INFINITI QX56 2004 Factory Service Manual ACS-52
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Symptom ChartEKS007XR
Symptoms Reference page
OperationON/OFF switch does not switch](/manual-img/42/57034/w960_57034-60.png)
ACS-52
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Symptom ChartEKS007XR
Symptoms Reference page
OperationON/OFF switch does not switch ON.Symptom 1
ACS-53
ON/OFF switch does not switch OFF.Symptom 1
ACS-53
Cruise does not function for setting (powering functions).Symptom 2
ACS-53
CANCEL switch does not function.Symptom 3
ACS-54
RESUME does not function.Symptom 3
ACS-54
The set speed does not increase.Symptom 3
ACS-54
The set distance to the vehicle ahead cannot be changed.Symptom 3
ACS-54
The ICC is not cancelled when the gear is in other than D.Symptom 4
ACS-55
Display/ChimeThe ICC system display does not appear.Check combination meter.
Refer to DI-17, "
How to Pro-
ceed With Trouble Diagnosis"
Chime does not function.Symptom 5
ACS-55
Control Driving force is hunting.Symptom 6
ACS-56
Function to detect the vehicle
aheadThe system frequently cannot detect the vehicle ahead.Symptom 7
ACS-56
The distance to detect the vehicle ahead is short.Symptom 7
ACS-56
The system misidentifies a vehicle even though there is no
vehicle ahead.
Refer to ACS-12, "LASER
BEAM AIMING ADJUST-
MENT"
Refer to ACS-9, "ICC Sys-
tem Running Test"
The system misidentifies a vehicle in the next lane.
Refer to ACS-12, "LASER
BEAM AIMING ADJUST-
MENT"
Refer to ACS-9, "ICC Sys-
tem Running Test"
The system does not detect a vehicle at all.Symptom 8
ACS-56
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Symptom 1: ON/OFF Switch Does Not Switch ON*1 , ON/OFF Switch Does Not
Switch OFF
*2EKS007XS
NOT INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMS
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Symptom 1: ON/OFF Switch Does Not Switch ON*1 , ON/OFF Switch Does Not
Switch OFF
*2EKS007XS
NOT](/manual-img/42/57034/w960_57034-61.png)
TROUBLE DIAGNOSIS FOR SYMPTOMS
ACS-53
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Symptom 1: ON/OFF Switch Does Not Switch ON*1 , ON/OFF Switch Does Not
Switch OFF
*2EKS007XS
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 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. 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 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)EKS007XT
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 89 MPH (144 km/h).
When the A/T selector lever is in gears other than "D".
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, 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-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 CIR 1, DTC 34
POWER SUPPLY CIR 2" .
NG >> GO TO 2.
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![INFINITI QX56 2004 Factory Service Manual ACS-54
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
2. PERFORM SELF-DIAGNOSIS
With CONSULT-II
1. Perform CONSULT-II self-diagnosis to check for malfunctioning items.
OK or NG
O INFINITI QX56 2004 Factory Service Manual ACS-54
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 QX56
2. PERFORM SELF-DIAGNOSIS
With CONSULT-II
1. Perform CONSULT-II self-diagnosis to check for malfunctioning items.
OK or NG
O](/manual-img/42/57034/w960_57034-62.png)
ACS-54
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: August 20072004 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 >> 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 the following switches and vehicle speed signal operate normally.
A: VHCL SPEED SE B: D 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, and 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 Other
Than ‘D’" .
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
EKS007XU
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 20 MPH (32 km/h).
1. CHECK SWITCH
With CONSULT-II
1. With data monitor, 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, and 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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ACS-55
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Symptom 4: The ICC System Is Not Cancelled When the Gear Is in Other Than
‘D’
EKS007XV
1. CHE INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMS
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Symptom 4: The ICC System Is Not Cancelled When the Gear Is in Other Than
‘D’
EKS007XV
1. CHE](/manual-img/42/57034/w960_57034-63.png)
TROUBLE DIAGNOSIS FOR SYMPTOMS
ACS-55
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Symptom 4: The ICC System Is Not Cancelled When the Gear Is in Other Than
‘D’
EKS007XV
1. CHECK D RANGE SWITCH
With CONSULT-II
1. With data monitor, check that “D 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, and 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 D RANGE SWITCH
1. With TCM data monitor, check that “D” position switch operates normally.
OK or NG
OK >> Replace ICC unit. Refer to ACS-59, "ICC Unit" . Perform ICC system running test, and then per-
form self-diagnosis of ICC system again.
NG >> After repairing or replacing malfunctioning part. Perform ICC system running test, and then per-
form self-diagnosis of ICC system again.
Symptom 5: Chime Does Not SoundEKS007XW
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 Frequently
Cannot Detect the Vehicle Ahead/The Detection Zone is Short" .)
1. CHECK ICC WARNING CHIME
With CONSULT-II
1. With active test, 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, and
then perform self-diagnosis of ICC system again.
NG >> GO TO 2.