display INFINITI QX56 2010 Factory Service Manual

CCS-58
< SYMPTOM DIAGNOSIS >
INTELLIGENT CRUISE CONTROL SYSTEM SYMPTOMS
SYMPTOM DIAGNOSIS
INTELLIGENT CRUISE CONTROL SYSTEM SYMPTOMS
Symptom ChartINFOID:0000000005146008
Symptoms Reference page
Operation ON/OFF switch does not switch ON.
CCS-59
ON/OFF switch does not switch OFF.CCS-59
Cruise does not function for setting (powering functions).CCS-60
CANCEL switch does not function.CCS-61
RESUME does not function.CCS-61
The set speed does not increase.CCS-61
The set distance to the vehicle ahead cannot be changed.CCS-61
The ICC is not cancelled when the gear is in "N".CCS-62
Display/ChimeThe ICC system display does not appear.
Check combination meter. Refer to
MWI-22, "Diagnosis Description"
Chime does not function. CCS-63
ControlDriving force is hunting. CCS-64
Function to detect the vehicle aheadThe system frequently cannot detect the vehicle ahead.
CCS-65
The distance to detect the vehicle ahead is short.CCS-65
The system misidentifies a vehicle even though there is
no vehicle ahead.• Refer to CCS-5, "
LASER BEAM
AIMING ADJUSTMENT : Out-
line of Laser Beam Aiming Ad-
justment Procedure"
• Refer to
CCS-8, "ACTION TEST
: ICC System Running Test"
The system misidentifies a vehicle in the next lane. • Refer to CCS-5, "
LASER BEAM
AIMING ADJUSTMENT : Out-
line of Laser Beam Aiming Ad-
justment Procedure"
• Refer to
CCS-8, "ACTION TEST
: ICC System Running Test"
The system does not detect a vehicle at all. CCS-66
Revision: April 20092010 QX56

CCS
MAIN SWITCH DOES NOT TURN ON, MAIN SWITCH DOES NOT TURN OFF
CCS-59
< SYMPTOM DIAGNOSIS >
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MAIN SWITCH DOES NOT TURN ON, MAIN SWITCH DOES NOT TURN
OFF
Diagnosis ProcedureINFOID:0000000005146009
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 "DATA MONITOR", check that ON/OFF switch operates normally.
Does ON/OFF switch operate normally?
YES >> GO TO 2
NO >> 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.
Does the ICC unit pass inspection?
YES >> GO TO 3
NO >> • Poor connector connection. • Repair ICC unit connector. Erase DTC and perform ICC system running test. Refer to CCS-8,
"ACTION TEST : ICC System Running Test".
3.DIAGNOSIS CHECK
Perform self-diagnosis.
Is "CAN COMM CIRCUIT" indicated?
YES >> Refer to CCS-24, "DTC 20 CAN COMM CIRCUIT".
NO >> Refer to CCS-30, "
DTC 46 OPERATION SW CIRC".
Revision: April 20092010 QX56

CCS-60
< SYMPTOM DIAGNOSIS >
ICC SYSTEM CANNOT BE SET (MAIN SWITCH TURNS ON/OFF)
ICC SYSTEM CANNOT BE SET (MAIN SWITCH TURNS ON/OFF)
Diagnosis ProcedureINFOID:0000000005146010
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
1. With “CAUSE OF AUTO-CANCEL” in "WORK SUPPOR T", check if any cause of cancellation exists.
Is there a cause of cancellation stored?
YES >> • Cancel with appropriate cause. • For causes A, B, or C, go to specified diagnosis.A: “OPE SW VOLT CIRC” : Refer to CCS-30, "
DTC 46 OPERATION SW CIRC".
B: “VHCL SPD UNMATCH” : Refer to CCS-26, "
DTC 41 VHCL SPEED SE CIRC".
C: “IGN LOW VOLT” : Refer to CCS-25, "
DTC 31 POWER SUPPLY CIR1, DTC 34
POWER SUPPLY CIR2".
NO >> GO TO 2
2.PERFORM SELF-DIAGNOSIS
1. Perform -self-diagnosis to check for malfunctioning items.
Does the ICC have any DTC’s stored?
YES >> Repair or replace as necessary, erase DTC. Perform ICC system running test. Refer to CCS-8,
"ACTION TEST : ICC System Running Test".
NO >> GO TO 3
3.CHECK SWITCHES AND VE HICLE SPEED SIGNAL
1. With "DATA MONITOR", 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
Do the monitor items display properly?
YES >> Replace ICC unit and erase DTC. Refer to CCS-71, "ICC Unit". Perform ICC system running test.
Refer to CCS-8, "
ACTION TEST : ICC System Running Test".
NO >> • A: Refer to CCS-26, "
DTC 41 VHCL SPEED SE CIRC".
• B: Refer to CCS-62, "
Diagnosis Procedure".
• C: Refer to CCS-28, "
DTC 45 BRAKE SW/STOP L SW".
• D: Refer to CCS-30, "
DTC 46 OPERATION SW CIRC".
Revision: April 20092010 QX56

CCS
ICC STEERING SWITCH (OTHER THAN MAIN SWITCH) DOES NOT FUNCTION
CCS-61
< SYMPTOM DIAGNOSIS >
C
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M B
N P A
ICC STEERING SWITCH (OTHER THAN MAIN SWITCH) DOES NOT
FUNCTION
Diagnosis ProcedureINFOID:0000000005146011
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
1. With "DATA MONITOR", check that the following switches operate normally.
“RESUME/ACC SW”, “CANCEL SW”, “DISTANCE ADJ”.
Do the monitor items display properly?
YES >> Replace ICC unit and erase DTC. Refer to CCS-71, "ICC Unit". Perform ICC system running test.
Refer to CCS-8, "
ACTION TEST : ICC System Running Test".
NO >> GO TO 2
2.CHECK DIAGNOSIS
Perform self-diagnosis with CONSULT-III.
Is "CAN COMM CIRCUIT" indicated?
YES >> Refer to CCS-24, "DTC 20 CAN COMM CIRCUIT".
NO >> Refer to CCS-30, "
DTC 46 OPERATION SW CIRC".
Revision: April 20092010 QX56

CCS-62
< SYMPTOM DIAGNOSIS >
ICC SYSTEM DOES NOT CANCEL WHEN A/T SELECTOR LEVER SETS ON "N"
ICC SYSTEM DOES NOT CANCEL WHEN A/T SELECTOR LEVER SETS
ON "N"
Diagnosis ProcedureINFOID:0000000005146012
1.CHECK D RANGE SWITCH
1. With "DATA MONITOR", check that “NP RANGE SW” operates normally.
Does the monitor item display normally?
YES >> Replace ICC unit and erase DTC. Refer to CCS-71, "ICC Unit". Perform ICC system running test.
Refer to CCS-8, "
ACTION TEST : ICC System Running Test".
NO >> GO TO 2
2.CHECK CAN COMMUNICATION
1. With self-diagnosis, check “CAN COMM CIRCUIT”.
Does "CAN COMM CIRCUIT" display with self-diagnosis?
YES >> Refer to CCS-24, "DTC 20 CAN COMM CIRCUIT".
NO >> GO TO 3
3.CHECK NP RANGE SWITCH
1. With "DATA MONITOR", check that “N” position switch operates normally.
Does the monitor item display normally?
YES >> Replace ICC unit. Refer to CCS-71, "ICC Unit". Perform ICC system running test. Refer to CCS-8,
"ACTION TEST : ICC System Running Test".
NO >> Repair or replace as necessary. Perform ICC system running test. Refer to CCS-8, "
ACTION
TEST : ICC System Running Test".
Revision: April 20092010 QX56

CCS
CHIME DOES NOT SOUNDCCS-63
< SYMPTOM DIAGNOSIS >
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CHIME DOES NOT SOUND
Diagnosis ProcedureINFOID:0000000005146013
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.
• 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 t he system is malfunctioning. If there is any mal-
function in detecting the vehicle ahead. Refer to CCS-65, "
Diagnosis Procedure".
1.CHECK ICC WARNING CHIME
Check warning chime operation.
Did the ICC warning chime fail to operate?
YES >> Determine preceding vehicle detection status when malfunction occurred. If chime should have sounded replace ICC unit. Refer to CCS-71, "
ICC Unit". Perform ICC system running test. Refer
to CCS-8, "
ACTION TEST : ICC System Running Test".
NO >> GO TO 2
2.CAN COMMUNICATION INSPECTION
1. With -self-diagnosis, check “CAN COMM CIRCUIT”.
Does "CAN COMM CIRCUIT" display with self-diagnosis?
YES >> Refer to CCS-24, "DTC 20 CAN COMM CIRCUIT".
NO >> Replace combination meter. Refer to MWI-100, "
Removal and Installation". Erase DTC and per-
form ICC system running test. Refer to CCS-8, "
ACTION TEST : ICC System Running Test".
Revision: April 20092010 QX56

CCS-66
< SYMPTOM DIAGNOSIS >
THE SYSTEM DOES NOT DETECT THE VEHICLE AHEAD AT ALL
THE SYSTEM DOES NOT DETECT THE VEHICLE AHEAD AT ALL
Diagnosis ProcedureINFOID:0000000005146016
1.VISUAL CHECK
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 segment in preceding vehicle detection display.)
Does the display operate normally?
YES >> GO TO 2
NO >> Check combination meter. Refer to MWI-22, "
Diagnosis Description".
2. VISUAL CHECK
Check ICC sensor window for contamination and foreign materials.
Is the ICC sensor window clean and free of obstruction?
YES >> If any contamination or foreign materials ar e found, remove them. Perform ICC system running
test. Refer to CCS-8, "
ACTION TEST : ICC System Running Test".
NO >> GO TO 3
3.VISUAL CHECK
Check ICC sensor window for cracks and scratches.
Is the ICC sensor window intact?
YES >> GO TO 4
NO >> • Replace ICC sensor and perform laser beam aiming adjustment. Refer to CCS-72, "
ICC Sen-
sor".
• Perform ICC system running test. Refer to CCS-8, "
ACTION TEST : ICC System Running Test".
4.ADJUST ICC SENSOR
• After performing laser beam aiming adjustment, perform ICC system running test. Refer to CCS-8, "
ACTION
TEST : ICC System Running Test". Check that preceding vehicle detection performance has been improved.
Is the ICC system operating normally?
YES >> INSPECTION END.
NO >> • Replace ICC sensor and perform laser beam aiming adjustment. Refer to CCS-72, "
ICC Sen-
sor".
• Perform ICC system running test. Refer to CCS-8, "
ACTION TEST : ICC System Running Test".
Revision: April 20092010 QX56

DEF-4
< FUNCTION DIAGNOSIS >
REAR WINDOW DEFOGGER SYSTEM
FUNCTION DIAGNOSIS
REAR WINDOW DEFOGGER SYSTEM
System DiagramINFOID:0000000005146817
System DescriptionINFOID:0000000005146818
Operation Description
• When rear window defogger switch is turned ON while ignition switch is ON, the A/C and AV switch assem-bly (rear window defogger switch) transmits rear window defogger switch signal to BCM.
• BCM transmits rear window defogger control signal to IPDM E/R and display unit via CAN communication when rear window defogger operates.
• IPDM E/R turns rear window defogger relay and heated mirror relay ON when rear window defogger switch
signal is received.
• Rear window defogger and door mirror defogger are supplied with power and operate when rear window defogger relay and heated mirror relay turn ON.
• Rear window defogger ON is displayed when signal is received.
Timer function
• BCM turns rear window defogger relay and heated mirror relay ON for approximately 15 minutes when rear window defogger switch is turned ON while ignition switch is ON. It makes rear window defogger and door
mirror defogger operate.
• Timer is canceled after pressing rear window defogger switch again during timer operation. Then BCM turns
rear window defogger relay and heated mirror relay OFF. The same reaction also occurs during timer opera-
tion, if the ignition switch is turned OFF.
INPUT/OUTPUT SIGNAL CHART
ALLIA0892GB
Switch Input signal to BCM BCM functionActuator
Rear window defogger switch Defogger switch signal Rear window defogger & door mirror
defogger control Rear window defogger
Door mirror defogger
Ignition switch Ignition signal
Revision: April 20092010 QX56

DEF-6
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000005327521
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
REAR WINDOW DEFOGGER
Diagnosis mode Function Description
WORK SUPPORT Changes the setting for each system function.
SELF-DIAG RESULTS Displays the diagnosis results judged by BCM. Refer to BCS-54, "
DTCIndex".
CAN DIAG SUPPORT MNTR Monitors the reception status of CAN communication viewed from BCM.
DATA MONITOR The BCM input/output signals are displayed.
ACTIVE TEST The signals used to activate each device are forcibly supplied from BCM.
ECU IDENTIFICATION The BCM part number is displayed.
CONFIGURATION • Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.
System
Sub system selection item Diagnosis mode
WORK SUPPORT DATA MONITOR ACTIVE TEST
BCM BCM ×
Door lock DOOR LOCK ×××
Rear window defogger REAR DEFOGGER ×
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Remote keyless entry system MULTI REMOTE ENT ××
Exterior lamp HEAD LAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ××
Air conditioner AIR CONDITONER ×
Intelligent Key system INTELLIGENT KEY ×
Combination switch COMB SW ×
Immobilizer IMMU ××
Interior room lamp battery saver BATTERY SAVER ×××
Back door open TRUNK ××
RAP (retained accessory power) RETAINED PWR ×××
Signal buffer system SIGNAL BUFFER ××
TPMS (tire pressure monitoring sys-
tem) AIR PRESSURE MONITOR
×××
Vehicle security system THEFT ALM ×××
Panic alarm system PANIC ALARM ×
Revision: April 20092010 QX56

DIAGNOSIS SYSTEM (BCM)DEF-7
< FUNCTION DIAGNOSIS >
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REAR WINDOW DEFOGGER : CONSULT-III Function (BCM - REAR DEFOGGER)
INFOID:0000000005327522
DATA MONITOR
ACTIVE TEST
Monitor Item [Unit] Description
IGN ON SW [ON/OFF] Indicates condition of ignition switch in ON position
ACC ON SW [ON/OFF] Indicates condition of ignition switch in ACC position
REAR DEF SW [ON/OFF] Displays “Press (ON)/other (OFF)” status determin ed with the rear window defogger switch
Test Item Description
REAR DEFOGGER This test is able to check rear window defogger operation. Rear window defogger operates
when ’ON" on CONSULT-
III screen is touched
Revision: April 20092010 QX56