Ins INFINITI QX56 2004 Factory Service Manual

FRONT FOG LAMP
LT-77
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Revision: August 20072004 QX56
4. IPDM E/R INSPECTION
Start auto active test. Refer to PG-23, "
Auto Active Test" . When
front fog lamp relay is operating, check voltage between left/right
front fog lamp connector terminals and ground.
OK or NG
OK >> Check front fog lamp bulbs and replace as necessary.
NG >> Replace IPDM E/R. Refer to PG-29, "
Removal and Installation of IPDM E/R" .
Front Fog Lamp Does Not Illuminate (One Side)EKS007BE
1. BULB INSPECTION
Inspect bulb of lamp which does not illuminate.
OK or NG
OK >> GO TO 2.
NG >> Replace front fog lamp bulb. Refer to LT- 7 9 , "
Bulb Replacement" .
2. INSPECTION BETWEEN IPDM E/R AND FRONT FOG LAMPS
1. Disconnect IPDM E/R connector and inoperative front fog lamp connector.
2. Check continuity between harness connector terminals of IPDM
E/R and harness connector terminal of front fog lamps.
OK or NG
OK >> Check ground circuit. If OK, replace IPDM E/R. Refer to
PG-29, "
Removal and Installation of IPDM E/R" . If NG,
repair harness or connector.
NG >> Check for short circuits and open circuits in harness between IPDM E/R and front fog lamps.
Front fog lamp
(–)Vo l ta g e
(Approx.) (+)
ConnectorTe r m i n a l
(wire color)
LH E101
1 (W/R) Ground Battery voltage
RH E102
WKIA1884E
IPDM E/R Front fog lamp
Continuity
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
E12350 (W/R) LH E101
1 (W/R) Yes
51 (W/R) RH E102
WKIA1885E

FRONT FOG LAMP
LT-79
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Revision: August 20072004 QX56
Bulb Replacement EKS007BG
1. Remove the front turn/fog lamp assembly. Refer to LT-79, "Removal and Installation" .
2. Turn the bulb cover counterclockwise to remove it.
3. Unlatch retaining spring.
4. Remove bulb and disconnect the connector.
CAUTION:

Do not touch the glass of bulb directly by hand. Keep
grease and other oily substances away from it. Do not
touch bulb by hand while it is lit or right after being
turned off. Burning may result.

Do not leave bulb out of fog lamp reflector for a long time
because dust, moisture smoke, etc. may affect the perfor-
mance of fog lamp. When replacing bulb, be sure to
replace it with new one.
Installation is in the reverse order of removal.
Removal and InstallationEKS007BH
The fog lamp is a semi-sealed beam type which uses a replaceable halogen bulb.
CAUTION:

Do not leave fog lamp assembly without bulb for a long period of time. Dust, moisture, smoke, etc.
entering the fog lamp body may affect the performance. Remove the bulb from the headlamp
assembly just before replacement bulb is installed.

Grasp only the plastic base when handling the bulb. Never touch the glass envelope. Touching the
glass could significantly affect the bulb life and/or fog lamp performance.
1. Remove the front turn/fog lamp finisher.
2. Remove bolt and pull fog lamp out of front fascia.
3. Disconnect electrical connector.
Installation is in the reverse order of removal.
WKIA1886E
WKIA1887E
: 5.3 Nm (0.54 kg-m, 47 in-lb)
WKIA1888E

LT-86
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: August 20072004 QX56
How to Proceed With Trouble DiagnosisEKS007BN
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-80, "
System Description" .
3. Perform preliminary check. Refer to LT-87, "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Do turn signal and hazard warning lamps operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
34 L Combination switch output 3 ONLighting, turn, wiper OFF
Wiper dial position 4
35 O/B Combination switch output 2
ONLighting, turn, wiper OFF
Wiper dial position 4
36 R/W Combination switch output 1
38 W/L Ignition switch (ON) ON — Battery voltage
39 W CAN-H — — —
40 R CAN-L — — —
60 G/B Turn signal (left) ONCombina-
tion switchTu rn le ft O N
61 G/Y Turn signal (right) ONCombina-
tion switchTurn right ON
67 B Ground ON — 0V
70 W/B Battery power supply OFF — Battery voltage Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
SKIA5291E
SKIA5292E
SKIA3009J
SKIA3009J

TURN SIGNAL AND HAZARD WARNING LAMPS
LT-87
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Revision: August 20072004 QX56
Preliminary CheckEKS007BO
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES OR FUSIBLE LINK
Check for blown fuses or fusible link.
Refer to LT- 8 3 , "
Wiring Diagram — TURN —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors.
2. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between BCM and fuse or fus-
ible link.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> Inspection End.
NG >> Check ground circuit harness.
Unit Power source Fuse No.
BCMBattery f
Ignition switch ON or START position 59
BCM
(–)Ignition switch position
(+)
OFF ACC ON
ConnectorTerminal
(wire color)
M18 38 (W/L)
Ground0V 0VBattery
voltage
M20 70 (W/B)Battery
voltageBattery
voltageBattery
voltage
WKIA1436E
BCM
Continuity
ConnectorTe r m i n a l
(wire color)
M20 67 (B) Ground Yes
LIIA0915E

LT-88
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: August 20072004 QX56
CONSULT-II Function (BCM)EKS007BP
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-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnostic
test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports 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-90
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: August 20072004 QX56
Turn Signal Lamp Does Not OperateEKS007BQ
1. CHECK COMBINATION SWITCH INPUT SIGNAL
With CONSULT-II
Select “BCM” on CONSULT-II. With “FLASHER” data monitor, make
sure “TURN SIGNAL R” and “TURN SIGNAL L” turns ON-OFF
linked with operation of lighting switch.
Without CONSULT-II
Refer to LT- 1 0 0 , "
Combination Switch Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Check lighting switch. Refer to LT-100, "
Combination Switch Inspection" .
2. ACTIVE TEST
With CONSULT-II
1. Select “FLASHER” during active test. Refer to LT-89, "
ACTIVE
TEST" .
2. Make sure “FLASHER RH” and “FLASHER LH” operate.
Without CONSULT-II
GO TO 3.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installa-
tion of BCM" .
NG >> GO TO 3.
3. CHECK TURN SIGNAL LAMPS CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and front turn/fog lamp LH and RH
connectors.
3. Check continuity between BCM harness connector M20 terminal
60 (G/B) and front turn/fog lamp LH harness connector E101 ter-
minal 2 (G/B).
4. Check continuity between BCM harness connector M20 terminal
61 (G/Y) and front turn/fog lamp RH harness connector E102
terminal 2 (G/Y).
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.When lighting switch is in
TURN RH position: TURN SIGNAL R ON
When lighting switch is in
TURN LH position: TURN SIGNAL L ON
SKIA4499E
SKIA6190E
60 (G/B) - 2 (G/B) : Continuity should exist.
61 (G/Y) - 2 (G/Y) : Continuity should exist.
WKIA1890E

TURN SIGNAL AND HAZARD WARNING LAMPS
LT-91
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Revision: August 20072004 QX56
4. CHECK GROUND
1. Check continuity between front turn/fog lamp LH harness con-
nector E101 terminal 3 (B) and ground.
2. Check continuity between front turn/fog lamp RH harness con-
nector E102 terminal 3 (B) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK BULB
Check bulb standard of each turn signal lamp is correct. Refer to LT-170, "
Exterior Lamp" .
OK or NG
OK >> Replace BCM if turn signal lamps do not work after setting the connector again. Refer to BCS-19,
"Removal and Installation of BCM" .
NG >> Replace turn signal lamp bulb. Refer to LT- 9 4 , "
Bulb Replacement (Front Turn Signal Lamp)" .
Rear Turn Signal Lamp Does Not OperateEKS007BR
1. CHECK BULB
Check bulb standard of each turn signal lamp is correct. Refer to LT-170, "
Exterior Lamp" .
OK or NG
OK >> GO TO 2.
NG >> Replace turn signal lamp bulb. Refer to LT-122, "
Bulb Replacement (Turn Signal)" .
2. CHECK TURN SIGNAL LAMPS CIRCUIT
1. Disconnect BCM connector and rear turn signal lamp connector.
2. Check continuity between BCM harness connector M20 terminal
61 (G/Y) and rear turn signal lamp RH harness connector B105
terminal 1 (G/Y).
3. Check continuity between BCM harness connector M20 terminal
60 (G/B) and rear turn signal lamp LH harness connector B35
terminal 1 (G/B).
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.3 (B) - Ground : Continuity should exist.
3 (B) - Ground : Continuity should exist.
WKIA1891E
61 (G/Y) - 1 (G/Y) : Continuity should exist.
60 (G/B) - 1 (G/B) : Continuity should exist.
WKIA1892E

LT-92
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: August 20072004 QX56
3. CHECK GROUND CIRCUIT
Check continuity between rear turn signal lamp harness connector
B35 LH and B105 RH terminal 3 (B) and ground.
OK or NG
OK >> Check rear turn signal lamp connector for proper con-
nection. Repair as necessary.
NG >> Repair harness or connector.
Hazard Warning Lamp Does Not Operate But Turn Signal Lamps OperateEKS007BS
1. CHECK BULB
Make sure bulb standard of each turn signal lamp is correct. Refer to LT-170, "
Exterior Lamp" .
OK or NG
OK >> GO TO 2.
NG >> Replace turn signal lamp bulb. Refer to LT- 9 4 , "
Bulb Replacement (Front Turn Signal Lamp)" for
front turn signal bulb. Refer to LT-122, "
Bulb Replacement (Turn Signal)" 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
(W/B) and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installa-
tion of BCM" .
NG >> GO TO 3.3 (B) - Ground : Continuity should exist.
WKIA1893E
When hazard switch is in
ON position : HAZARD SW ON
SKIA4500E
BCM
(–) ConditionVo ltag e
(Approx.) (+)
ConnectorTe r m i n a l
(wire color)
M18 29 (W/B) GroundHazard switch is ON 0V
Hazard switch is OFF 5V
WKIA1969E

TURN SIGNAL AND HAZARD WARNING LAMPS
LT-93
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Revision: August 20072004 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 (W/B) and hazard switch harness connector M55 terminal 2
(W/B).
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 (B) 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 turn signal lamps does not work after
setting the connector again. Refer to BCS-19, "
Removal
and Installation of BCM" .
NG >> Replace hazard switch. Refer to LT-96, "
Removal and Installation" .
Turn Signal Indicator Lamp Does Not OperateEKS007BT
1. CHECK CAN COMMUNICATION SYSTEM
Check CAN communication. Refer to LAN-5, "
CAN COMMUNICATION" .
OK or NG
OK >> Replace combination meter. Refer to IP-13, "Combination Meter" .
NG >> Repair as necessary.29 (W/B) - 2 (W/B) : Continuity should exist.
WKIA1894E
1 (B) - Ground : Continuity should exist.
WKIA1895E
Hazard switch
Condition Continuity
Te r m i n a l
12Hazard switch is ON Yes
Hazard switch is OFF No
WKIA1896E

LT-94
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: August 20072004 QX56
Bulb Replacement (Front Turn Signal Lamp)EKS007BU
1. Remove turn/fog lamp assembly. Refer to LT- 7 9 , "Removal and Installation" .
2. Turn bulb socket counterclockwise to remove it from lamp housing.
3. Pull bulb from socket.
Installation is in the reverse order of removal.
Bulb Replacement (Rear Turn Signal Lamp)EKS007BV
Refer to LT- 1 2 2 , "Bulb Replacement (Turn Signal)" in REAR COMBINATION LAMP.
Removal and Installation of Front Turn Signal LampEKS007BW
Refer to LT- 3 3 , "Removal and Installation" .
Removal and Installation of Rear Turn Signal Lamp EKS007BX
Refer to LT- 1 2 2 , "Removal and Installation" in REAR COMBINATION LAMP.