air condition INFINITI QX56 2004 Factory Service Manual

POWER WINDOW SYSTEM
GW-57
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Revision: August 20072004 QX56
2. CHECK POWER WINDOW GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between rear power window control unit LH or RH connector D209 (LH), D309 (RH) ter-
minal 15 and ground.
OK or NG
OK >> Rear power window control unit LH or RH power supply
and ground circuit is OK. Refer to GW-36, "
Trouble
Diagnoses Symptom Chart" .
NG >> Repair or replace harness.
3. CHECK REAR POWER WINDOW CONTROL UNIT LH OR RH POWER SUPPLY CIRCUIT
1. Disconnect BCM.
2. Check continuity between BCM connector M20 terminal 69 and rear power window control unit LH or RH
connector D209 (LH), D309 (RH) terminal 13.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK BCM OUTPUT SIGNAL
1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M20 terminal 69 and ground.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace BCM.15 (B) - Ground : Continuity should exist.
LIIA2043E
69 (W/R) - 13 (W/R) : Continuity should exist.
LIIA1352E
69 (W/R) - Ground : Battery voltage
WIIA0508E

GW-58
POWER WINDOW SYSTEM
Revision: August 20072004 QX56
Rear Power Window Switch LH or RH Power Supply and Ground Circuit CheckEIS0038X
1. CHECK POWER WINDOW POWER SUPPLY CIRCUIT
1. Disconnect rear power window switch LH or RH.
2. Turn ignition switch ON.
3. Check voltage between rear power window switch LH or RH connector D203 (LH), D303 (RH) terminals 2,
3 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. CHECK POWER WINDOW GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between rear power window switch LH or RH connector D203 (LH), D303 (RH) terminals
1, 7 and ground.
OK or NG
OK >> Rear power window switch LH or RH power supply and
ground circuit is OK. Refer to GW-36, "
Trouble Diag-
noses Symptom Chart" .
NG >> Repair or replace harness.
Rear Power Window Motor LH Circuit Check EIS0038Y
1. CHECK REAR POWER WINDOW SWITCH LH OUTPUT SIGNAL
1. Disconnect rear power window switch LH.
2. Turn ignition switch ON.
3. Check voltage between rear power window switch LH connector D203 terminals 4, 5 and ground.
OK or NG
OK >> Replace rear power window switch LH.
NG >> GO TO 2.2, 3 (G/W) - Ground : Battery voltage
LIIA1348E
1, 7 (L) - Ground : Continuity should exist.
LIIA2044E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
D2034 (W)
GroundClosing 0
Opening Battery voltage
5 (W/R)Closing Battery voltage
Opening 0
LIIA1364E

POWER WINDOW SYSTEM
GW-59
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Revision: August 20072004 QX56
2. CHECK REAR POWER WINDOW SWITCH LH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window control unit LH.
3. Check continuity between rear power window switch LH connector D203 terminals 4, 5 and rear power
window control unit LH connector D209 terminals 9, 10.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK REAR POWER WINDOW MOTOR LH CIRCUIT
1. Disconnect rear power window motor LH.
2. Check continuity between rear power window control unit LH connector D209 terminals 11, 12 and rear
power window motor LH connector D204 terminals 1, 2.
OK or NG
OK >> Replace rear power window motor LH.
NG >> Repair or replace harness.
Rear Power Window Motor RH Circuit Check EIS0038Z
1. CHECK REAR POWER WINDOW SWITCH RH OUTPUT SIGNAL
1. Disconnect rear power window switch RH.
2. Turn ignition switch ON.
3. Check voltage between rear power window switch RH connector D303 terminals 4, 5 and ground.
OK or NG
OK >> Replace rear power window switch RH.
NG >> GO TO 2.4 (W) - 9 (W) : Continuity should exist.
5 (W/R) - 10 (W/R) : Continuity should exist.
LIIA1379E
11 (O) - 2 (O) : Continuity should exist.
12 (BR) - 1 (BR) : Continuity should exist.
LIIA1380E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
D3034 (W)
GroundClosing 0
Opening Battery voltage
5 (W/L)Closing Battery voltage
Opening 0
LIIA1364E

GW-60
POWER WINDOW SYSTEM
Revision: August 20072004 QX56
2. CHECK REAR POWER WINDOW SWITCH RH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window control unit RH.
3. Check continuity between rear power window switch RH connector D303 terminals 4, 5 and rear power
window control unit RH connector D309 terminals 9, 10.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK REAR POWER WINDOW MOTOR RH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window motor RH.
3. Check continuity between rear power window control unit RH connector D309 terminals 11, 12 and rear
power window motor RH connector D304 terminals 1, 2.
OK or NG
OK >> Replace rear power window motor RH.
NG >> Repair or replace harness.
Limit Switch Circuit Check Rear LH and RHEIS00390
1. CHECK REAR POWER WINDOW MOTOR LH AND RH LIMIT SWITCH SIGNAL
1. Disconnect rear power window control unit LH or RH.
2. Turn ignition switch ON.
3. Check voltage between rear power window control unit LH or RH connector and ground.
OK or NG
OK >> Limit switch circuit is OK.
NG >> GO TO 2.4 (W) - 9 (W) : Continuity should exist.
5 (W/L) - 10 (W/L) : Continuity should exist.
LIIA1379E
11 (O) - 2 (O) : Continuity should exist.
12 (BR) - 1 (BR) : Continuity should exist.
LIIA1380E
ConnectorTerminals (Wire color)
Condition Voltage (V)
(Approx.)
(+) (-)
D209 (LH)
D309 (RH)3 (G) GroundRear LH or RH door window
is between fully-open and just
before fully-closed position
(ON)0
Rear LH or RH door window
is between just before fully-
closed position and fully-
closed position (OFF)5
LIIA1381E

POWER WINDOW SYSTEM
GW-63
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Revision: August 20072004 QX56
3. CHECK ENCODER GROUND
1. Turn ignition switch OFF.
2. Check continuity between rear power window motor LH or RH connector D204 (LH) or D304 (RH) termi-
nal 6 and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. CHECK ENCODER GROUND CIRCUIT
Check continuity between rear power window motor LH or RH connector D204 (LH) or D304 (RH) terminal 6
and rear power window control unit LH or RH connector D209 (LH), D309 (RH) terminal 3.
OK or NG
OK >> Replace rear power window control unit LH or RH.
NG >> Repair or replace harness.
5. CHECK ENCODER SIGNAL
1. Connect rear power window motor LH or RH.
2. Turn ignition switch ON.
3. Check the signal between rear power window control unit LH or RH connector D209 (LH) or D309 (RH)
terminal 4 and ground with oscilloscope.
OK or NG
OK >> GO TO 6.
NG >> Replace rear power window control unit LH or RH.6 (G) - Ground : Continuity should exist.
LIIA0923E
6 (G) - 3 (G) : Continuity should exist.
LIIA1383E
Connec-
torTerminals (Wire color)
Condition Signal
(+) (-)
D209
(LH)4 (Y/R)
Ground Opening
D309
(RH)4 (Y/B)
LIIA2301EOCC3383D

POWER WINDOW SYSTEM
GW-65
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Revision: August 20072004 QX56
Rear Power Vent Window Switch Circuit CheckEIS002VB
1. CHECK REAR POWER VENT WINDOW SWITCH OPERATION
1. Turn ignition switch OFF.
2. Disconnect rear power vent window switch.
3. Check continuity between rear power vent window switch terminals 1, 3 and 4.
OK or NG
OK >> GO TO 2.
NG >> Replace rear power vent window switch.
2. CHECK REAR POWER VENT WINDOW SWITCH CIRCUIT HARNESS CONTINUITY
Check continuity between rear power vent window switch connector R103 terminal 1 and ground.
OK or NG
OK >> Rear power vent window switch circuit harness OK.
NG >> Repair or replace harness.
Rear Power Vent Window Motor LH Circuit CheckEIS002VC
1. CHECK REAR POWER VENT WINDOW LH SIGNAL
1. Turn ignition switch OFF.
2. Disconnect rear power vent window motor LH.
3. Turn ignition switch ON.
4. Check voltage between rear power vent window motor LH connector B52 terminal 1, 2 and ground.
OK or NG
OK >> Replace rear power vent window motor LH.
NG >> Repair or replace harness.
Te r m i n a l
Condition Continuity
(+) (–)
31Rear power vent win-
dow switch is pressed
OPEN.Ye s
41Rear power vent win-
dow switch is pressed
CLOSE.Ye s
LIIA0956E
1 (B) - Ground : Continuity should exist.
LIIA2045E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
B521 (G)
GroundOpening Battery voltage
Closing 0
2 (Y)Opening 0
Closing Battery voltage
WIIA0290E

GW-66
POWER WINDOW SYSTEM
Revision: August 20072004 QX56
Rear Power Vent Window Motor RH Circuit CheckEIS002VD
1. CHECK REAR POWER VENT WINDOW SWITCH RH SIGNAL
1. Turn ignition switch OFF.
2. Disconnect rear power vent window motor RH.
3. Turn ignition switch ON.
4. Check voltage between rear power vent window motor RH connector B150 terminal 1, 2 and ground.
OK or NG
OK >> Replace rear power vent window motor RH.
NG >> Repair or replace harness.
Rear Power Vent Window Relay (OPEN) CheckEIS002VE
1. CHECK REAR POWER VENT WINDOW RELAY (OPEN) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power vent window relay (OPEN).
3. Turn ignition switch ON.
4. Check voltage between rear power vent window relay (OPEN) connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. CHECK REAR POWER VENT WINDOW RELAY (OPEN)
Check continuity between rear power vent window relay (OPEN) terminals 3 and 4, 3 and 5.
OK or NG
OK >> GO TO 3.
NG >> Replace rear power vent window relay (OPEN).
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
B1501 (BR)
GroundOpening Battery voltage
Closing 0
2 (R)Opening 0
Closing Battery voltage
WIIA0290E
ConnectorTerminals (Wire color)
Voltage (V)
(Approx.)
(+) (-)
M871 (W/L)
Ground Battery voltage
5 (W/R)
LIIA1565E
Terminal Condition Continuity
3412V direct current supply
between terminals 1 and 2No
No current supply Yes
3512V direct current supply
between terminals 1 and 2Ye s
No current supply No
WIIA0291E

GW-68
POWER WINDOW SYSTEM
Revision: August 20072004 QX56
2. CHECK REAR POWER VENT WINDOW RELAY (CLOSE)
Check continuity between rear power vent window relay (CLOSE) terminals 3 and 4, 3 and 5.
OK or NG
OK >> GO TO 3.
NG >> Replace rear power vent window relay (CLOSE).
3. CHECK REAR POWER VENT WINDOW RELAY (CLOSE) GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between rear power vent window relay
(CLOSE) connector M89 terminal 4 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK REAR POWER VENT WINDOW RELAY (CLOSE) CIRCUIT
1. Disconnect rear power vent window switch.
2. Check continuity between rear power vent window relay (CLOSE) connector M89 terminal 2 and rear
power vent window switch R103 terminal 4.
OK or NG
OK >> Replace rear power vent window switch.
NG >> Repair or replace harness.
Terminal Condition Continuity
3412V direct current supply
between terminals 1 and 2No
No current supply Yes
3512V direct current supply
between terminals 1 and 2Ye s
No current supply No
WIIA0291E
4 (B) - Ground : Continuity should exist.
LIIA1567E
2 (R/G) - 4 (V/W) : Continuity should exist.
LIIA1569E

REAR WINDOW DEFOGGER
GW-85
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Revision: August 20072004 QX56
Terminal and Reference Value for BCMEIS002VR
Terminal and Reference Value for IPDM E/REIS002VS
Work FlowEIS002VT
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to GW-79, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to GW-87,
"Trouble Diagnoses Symptom Chart" .
4. Does rear window defogger operate normally? YES: GO TO 5, NO: GO TO 3.
5. Inspection end.
Terminal Wire color Item ConditionVoltage (V)
(Approx.)
9Y/BRear window defogger
switch signalWhen rear window defogger switch is pressed. 0
When rear window defogger switch is OFF. 5
38 W/L Ignition switch ON or START Ignition switch (ON or START position) Battery voltage
39 W CAN-H — —
40 R CAN-L — —
67 B Ground — 0
70 W/B Battery power supply — Battery voltage
Terminal Wire color Item ConditionVoltage (V)
(Approx.)
38 B Ground (Power) — 0
39 W CAN-H — —
40 R CAN-L — —
59 B Ground (Signal) — 0
60 BRear window defogger output
signalWhen rear window defogger switch is ON. Battery voltage
When rear window defogger switch is OFF. 0

GW-90
REAR WINDOW DEFOGGER
Revision: August 20072004 QX56
Rear Window Defogger Switch Circuit CheckEIS002VX
1. CHECK REAR WINDOW DEFOGGER SWITCH OPERATION
With CONSULT-II
Check (“REAR DEF SW”, “IGN ON SW”) in DATA MONITOR mode
with CONSULT-II.
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between BCM connector and ground.
OK or NG
OK >> Rear window defogger switch check is OK.
NG >> GO TO 2.
2. CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and front air control.
3. Check continuity between BCM connector M18 terminal 9 and front air control connector M49 terminal 11.
4. Check continuity between BCM connector M18 terminal 9 and
ground
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.When rear window defogger switch is turned to ON
REAR DEF SW : ON
When ignition switch is turned to ON
IGN ON SW : ON
PIIA2373E
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
M18 9 (Y/B) GroundRear window defogger
switch is pressed.0
Rear window defogger
switch is OFF.5
LIIA0402E
9 (Y/B) - 11 (Y/B) : Continuity should exist.
9 (Y/B) - Ground : Continuity should not exist.
LIIA2035E