INFINITI QX56 2006 Factory Service Manual

LT-94
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: November 20092006 QX56
3. CHECK TURN SIGNAL LAMPS CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and door mirror LH/RH connector.
3. Check continuity between BCM harness connector M20 (A) ter- minal 60 (LH), 61 (RH) and door mirror harness connector (LH
D4), (RH D107) (B) terminal 15.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK GROUND
1. Check continuity between door mirror harness connector (LH D4), (RH D107) terminal 11 and ground.
OK or NG
OK >> Replace door mirror turn signal.
NG >> Repair harness or connector.
Rear Turn Signal Lamp Does Not OperateEKS00B9Y
1. CHECK BULB
Check bulb standard of each turn signal lamp is correct. Refer to LT- 1 7 5 , "
Exterior Lamp" .
OK or NG
OK >> GO TO 2.
NG >> Replace turn signal lamp bulb. Refer to LT- 1 2 5 , "
Bulb Replacement" .
2. CHECK TURN SIGNAL LAMPS CIRCUIT
1. Disconnect BCM connector and rear combination lamp connec- tor.
2. Check continuity between BCM harness connector M20 (A) ter- minal 61 and rear combination lamp RH harness connector
B105 (B) terminal 4.
3. Check continuity between BCM harness connector M20 (A) ter- minal 60 and rear combination lamp LH harness connector B35
(B) terminal 4.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector. 60, 61 - 15
: Continuity should exist.
WKIA4524E
11 - Ground: Continuity should exist.
WKIA4525E
61 - 4: Continuity should exist.
60 - 4 : Continuity should exist.
WKIA4694E

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Revision: November 2009 2006 QX56
3. CHECK GROUND CIRCUIT
Check continuity between rear combination lamp harness connector
B35 LH and B105 RH terminal 6 and ground.
OK or NG
OK >> Check rear combination lamp connector for proper con- nection. Repair as necessary.
NG >> Repair harness or connector.
Hazard Warning Lamp Does Not Operate But Turn Signal Lamps OperateEKS00B9Z
1. CHECK BULB
Make sure bulb standard of each turn signal lamp is correct. Refer to LT- 1 7 5 , "
Exterior Lamp" .
OK or NG
OK >> GO TO 2.
NG >> Replace turn signal lamp bulb. Refer to LT- 3 1 , "
FRONT PARKING LAMP (INNER OR OUTER)"
for front turn signal bulb. Refer to LT- 1 2 5 , "Bulb Replacement" for rear turn signal bulb.
2. CHECK HAZARD SWITCH INPUT SIGNAL
With CONSULT-II
Select "BCM" on CONSULT-II. With "FLASHER" data monitor, make
sure "HAZARD SW" turns ON-OFF linked with operation of hazard
switch.
Without CONSULT-II
Check voltage between BCM harness connector M18 terminal 29
and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-20, "BCM" .
NG >> GO TO 3. 6 - Ground : Continuity should exist.
WKIA4695E
When hazard switch is in
ON position
: HAZARD SW ON
SKIA4500E
Terminals
ConditionVo l ta g e
(Approx.)
(+)
(– )
Connector Terminal
M18 29 Ground Hazard switch is ON
0V
Hazard switch is OFF 5V
WKIA1969E

LT-96
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: November 20092006 QX56
3. CHECK HAZARD SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and hazard switch connector.
3. Check continuity between BCM harness connector M18 terminal 29 and hazard switch harness connector M55 terminal 2.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK GROUND
Check continuity between hazard switch harness connector M55 ter-
minal 1 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK HAZARD SWITCH
1. Disconnect hazard switch connector.
2. Check continuity of hazard switch.
OK or NG
OK >> Replace BCM if hazard warning lamps do not work after setting the connector again. Refer to BCS-20, "
BCM" .
NG >> Replace hazard switch. Refer to LT- 9 9 , "
Removal and Installation" .
Turn Signal Indicator Lamp Does Not OperateEKS00BA0
1. CHECK CAN COMMUNICATION SYSTEM
Check CAN communication. Refer to LAN-26, "
CAN COMMUNICATION" .
OK or NG
OK >> Replace combination meter. Refer to IP-13, "COMBINATION METER" .
NG >> Repair as necessary. 29 - 2 : Continuity should exist.
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1 - Ground
: Continuity should exist.
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Hazard switch
ConditionContinuity
Terminal
12 Hazard switch is ON
Yes
Hazard switch is OFF No
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Revision: November 2009 2006 QX56
Bulb ReplacementEKS00BA1
TURN SIGNAL LAMP (FRONT)
Removal
1. Remove front fog lamp. Refer to LT- 7 9 , "Removal and Installation" .
2. Twist turn signal socket and remove from front fog lamp.
3. Remove turn signal bulb from socket.
Installation
Installation is in the reverse order of removal.
TURN SIGNAL LAMP (REAR)
Refer to LT- 1 2 5 , "Bulb Replacement" .
Removal and InstallationEKS00BA3
FRONT TURN SIGNAL LAMP
Refer to LT- 7 9 , "Removal and Installation" .
REAR TURN SIGNAL LAMP
Refer to LT- 1 2 5 , "Removal and Installation" .

LT-98
LIGHTING AND TURN SIGNAL SWITCH
Revision: November 20092006 QX56
LIGHTING AND TURN SIGNAL SWITCHPFP:25540
Removal and InstallationEKS00BA5
REMOVAL
1. Remove steering column cover.
2. While pressing tabs, pull lighting and turn signal switch toward
driver door and disconnect from the base.
INSTALLATION
Installation is in the reverse order of removal.
LKIA0013E

HAZARD SWITCHLT-99
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Revision: November 2009 2006 QX56
HAZARD SWITCHPFP:25290
Removal and InstallationEKS00BA6
REMOVAL
1. Remove cluster lid C. Refer to IP-12, "Removal" .
2. Remove screws and remove the hazard switch.
INSTALLATION
Installation is in the reverse order of removal.
WKIA1897E

LT-100
COMBINATION SWITCH
Revision: November 20092006 QX56
COMBINATION SWITCHPFP:25567
Wiring Diagram — COMBSW —EKS00BA7
WKWA3658E

COMBINATION SWITCHLT-101
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Revision: November 2009 2006 QX56
Combination Switch Reading FunctionEKS00BA8
For details, refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
CONSULT-II Function (BCM)EKS00BA9
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.
2. Touch "START (NISSAN BASED VHCL)".
3. Touch "BCM" on "SELECT SYSTEM" screen. If "BCM" is not indicated, go to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnostic
test item Diagnostic mode
Description
Inspection by part WORK SUPPORT
Supports inspections and adjustments. Commands are transmitted to the BCM
for setting the status suitable for required operation, input/output signals are
received from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time. ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read. ECU PART NUMBER BCM part number can be read.CONFIGURATION Performs BCM configuration read/write functions.
BBIA0369E
BCIA0029E
BCIA0030E

LT-102
COMBINATION SWITCH
Revision: November 20092006 QX56
4. Touch "COMB SW" on "SELECT TEST ITEM" screen.
DATA MONITOR
Operation Procedure
1. Touch "COMB SW" on "SELECT TEST ITEM" screen.
2. Touch "DATA MONITOR" on "SELECT DIAG MODE" screen.
3. Touch either "ALL SIGNALS" or "SELECTION FROM MENU" on "SELECT MONITOR ITEM" screen.
4. Touch "START".
5. When "SELECTION FROM MENU" is selected, touch items to be monitored. When "ALL SIGNALS" is
selected, all the signals will be monitored.
6. Touch "RECORD" while monitoring, then the status of the monitored item can be recorded. To stop recording, touch "STOP".
Display Item List
LKIA0183E
ALL SIGNALS Monitors all the signals.
SELECTION FROM MENU Selects and monitors individual signal.
Monitor item name
"OPERATION OR UNIT" Contents
TURN SIGNAL R "ON/OFF" Displays "Turn Right (ON)/Other (OFF)" status, determined from lighting switch signal.
TURN SIGNAL L "ON/OFF" Displays "Turn Left (ON)/Other (OFF)" status, determined from lighting switch signal.
HI BEAM SW "ON/OFF" Displays status (high beam switch: ON/Others: OFF) of high beam switch judged from lighting
switch signal.
HEAD LAMP SW 1 "ON/OFF" Displays "Headlamp switch 1 (ON)/Other (OFF)" status, determined from lighting switch signal.
HEAD LAMP SW 2 "ON/OFF" Displays status (headlamp switch 2: ON/Others: OFF) of headlamp switch 2 judged from lighting
switch signal.
LIGHT SW 1ST "ON/OFF" Displays status (lighting switch 1st position: ON/Others: OFF) of lighting switch judged from lighting
switch signal.
PASSING SW "ON/OFF" Displays status (flash-to-pass switch: ON/Others: OFF) of flash-to-pass switch judged from lighting
switch signal.
AUTO LIGHT SW "ON/OFF" Displays "Auto light switch (ON)/Other (OFF)" status, determined from lighting switch signal.
FR FOG SW "ON/OFF" Displays "Front fog lamp switch (ON)/Other (OFF)" status, determined from lighting switch signal.
FR WIPER HI "ON/OFF" Displays "Front Wiper HI (ON)/Other (OFF)" status, determined from wiper switch signal.
FR WIPER LOW "ON/OFF" Displays "Front Wiper LOW (ON)/Other (OFF)" status, determined from wiper switch signal.
FR WIPER INT "ON/OFF" Displays "Front Wiper INT (ON)/Other (OFF)" status, determined from wiper switch signal.
FR WASHER SW "ON/OFF" Displays "Front Washer Switch (ON)/Other (OFF)" status, determined from wiper switch signal.
INT VOLUME [1 - 7] Displays intermittent operation knob setting (1 - 7), determined from wiper switch signal.
RR WIPER ON "ON/OFF" Displays "Rear Wiper (ON)/(OFF)" status, determined from wiper switch signal.
RR WIPER INT "ON/OFF" Displays "Rear Wiper INT (ON)/(OFF)" status, determined from wiper switch signal.
RR WASHER SW "ON/OFF" Displays "Rear Washer (ON)/(OFF)" status, determined from wiper switch signal.

COMBINATION SWITCHLT-103
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Revision: November 2009 2006 QX56
Combination Switch InspectionEKS00BAA
1. SYSTEM CHECK
1. Referring to table below, check which system the malfunctioning switch belongs.
>> GO TO 2.
2. SYSTEM CHECK
With CONSULT-II
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. Connect CONSULT-II, and select "COMB SW" on "SELECT TEST ITEM" screen.
2. Select "DATA MONITOR".
3. Select "START", and confirm that other switches in malfunction- ing system operate normally.
Example: When auto light switch is malfunctioning, confirm that
"FRONT WIPER LOW" and "FRONT WIPER INT" in System 3,
to which the auto light switch belongs, turn ON-OFF normally.
Without CONSULT-II
Operate combination switch, and confirm that other switches in malfunctioning system operate normally.
Example: When auto light switch is malfunctioning, confirm that "FRONT WIPER LOW" and "FRONT WIPER
INT" in System 3, to which the auto light switch belongs, operate normally.
Check results
Other switches in malfunctioning system operate normally.>>Replace lighting switch or wiper switch.
Other switches in malfunctioning system do not operate normally.>>GO TO 3.
System 1 System 2 System 3System 4System 5
— FR WASHER FR WIPER LO TURN LHTURN RH
FR WIPER HI —FR WIPER INT PASSINGHEAD LAMP1
INT VOLUME 1 RR WASHER —HEAD LAMP2 HI BEAM
RR WIPER INT INT VOLUME 3 AUTO LIGHT—TAIL LAMP
INT VOLUME 2 RR WIPER ON —FR FOG —
SKIA7075E