ignition INFINITI QX56 2006 Factory Service Manual

GW-34
POWER WINDOW SYSTEM
Revision: November 20092006 QX56
4. Touch “BCM”.
If “BCM ” is not indicated, refer to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
5. Touch “RETAINED PWR ”.
6. Select diagnosis mode. “ACTIVE TEST ”, “WORK SUPPORT ” and "DATA MONITOR"
are available.
ACTIVE TEST
WORK SUPPORT
DATA MONITOR
BCIA0030E
LIIA0163E
BCIA0031E
Test Item Description
RETAINED PWR This test is able to supply RAP signal (power) from BCM (body control module) to power window
system and power sunroof system (if equipped). Those systems can be operated when turning on
“
RETAINED PWR ” on CONSULT-II screen even if the ignition switch is turned OFF.
NOTE:
During this test, CONSULT-II can be operated with ignition switch in OFF position. “ RETAINED
PWR ” should be turned “ ON” or “OFF ” on CONSULT-II screen when ignition switch is ON. Then
turn ignition switch OFF to check retained power operation. CONSULT-II might be stuck if
“ RETAINED PWR ” is turned “ON ” or “OFF ” on CONSULT-II screen when ignition switch is OFF.
Work item Description
RETAINED PWR RAP signal
’s power supply period can be changed by mode setting. Selects RAP signal ’s power
supply period between three steps

MODE1 (45 sec.) / MODE2 (OFF) / MODE 3 (2 min.).
Work item Description
IGN ON SW Indicates (ON / OFF) condition of ignition switch

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BCM Power Supply and Ground Circuit CheckEIS005XY
1. CHECK FUSE AND FUSIBLE LINK

Check 10A fuse (No. 4, located in the fuse block (J/B)]

Check 10A fuse (No. 59, located in the fuse and relay box)

Check 50A fusible link (letter f , located in the fuse and fusible link box)
NOTE:
Refer to GW-15, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3, "PRECAUTIONS" .
2. CHECK BCM POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace the harness.
3. CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG
OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
Connector Terminals
Power
source Condition Voltage (V)
(Approx.)
(+) (-)
M20 70 Ground Battery
power
supply Ignition
switch
OFF Battery voltage
M18 38 Ground
Ignition
power
supply Ignition
switch
ON or
START Battery voltage
11 Ground ACC
power
supply Ignition
switch
ACC or ON Battery voltage
LIIA0995E
67 - Ground
: Continuity should exist.
LIIA0915E

GW-38
POWER WINDOW SYSTEM
Revision: November 20092006 QX56
Main Power Window and Door Lock/Unlock Switch Power Supply and Ground
Circuit Check
EIS005XZ
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/ unlock switch connector D7 terminal 10, D8 terminal 19 and
ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch.
3. Check continuity between main power window and door lock/ unlock switch connector D8 terminal 17 and ground.
OK or NG
OK >> Power supply and ground circuit are OK.
NG >> Repair or replace harness.
3. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM and main power window and door lock/unlock switch.
3. Check continuity between BCM connector and main power win- dow and door lock/unlock switch connectors.
4. Check continuity between BCM and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness. 10 - Ground
: Battery voltage
19 - Ground : Battery voltage
LIIA2297E
17 - Ground : Continuity should exist.
LIIA0392E
Connector
Terminal Connector
Terminal Continuity
AB
BCM: M20 68
Main power window and
door lock/unlock switch:
D7 10 Yes
69 C
19 Yes
Main power window and
door lock/unlock switch: D8
Connector Terminal
GroundContinuity
A
BCM: M20 68
No
69 No
LIIA2215E

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4. CHECK BCM OUTPUT SIGNAL
1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M20 terminals 68, 69 and ground.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace BCM.
Power Window and Door Lock/Unlock Switch RH Power Supply and Ground
Circuit Check
EIS005Y0
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between power window and door lock/unlock switch RH connector D105 terminal 10 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect power window and door lock/unlock switch RH.
3. Check continuity between power window and door lock/unlock switch RH connector D105 terminal 11 and ground.
OK or NG
OK >> Power supply and ground circuit are OK.
NG >> Repair or replace harness.
3. CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check continuity between BCM connector M20 (A) terminal 69 and power window and door lock/unlock switch RH connector
D105 (B) terminal 10.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness. 68 - Ground
: Battery voltage
69 - Ground : Battery voltage
LIIA0917E
10 - Ground : Battery voltage
LIIA1257E
11 - Ground: Continuity should exist.
LIIA1258E
69 - 10 : Continuity should exist.
LIIA2298E

GW-40
POWER WINDOW SYSTEM
Revision: November 20092006 QX56
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. Refer to BCS-20, "
BCM" .
Front Power Window Motor LH Circuit CheckEIS005Y1
1. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/ unlock switch connector D7 terminals 8, 11 and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace main power window and door lock/unlock switch. Refer to EI-32, "
REMOVAL" .
2. CHECK POWER WINDOW MOTOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch and front power window motor LH.
3. Check continuity between main power window and door lock/ unlock switch connector D7 terminals 8, 11 and front power win-
dow motor LH connector D9 terminals 1, 2.
OK or NG
OK >> Replace front power window motor LH.
NG >> Repair or replace harness. Refer to GW-66, "
FRONT DOOR GLASS REGULATOR" .
69 - Ground
: Battery voltage
WIIA0508E
ConnectorTerminals
ConditionVoltage (V)
(Approx.)
(+) (-)
D7 8
Ground UP Battery voltage
DOWN 0
11 UP
0
DOWN Battery voltage
LIIA0317E
8 - 2 : Continuity should exist.
11 - 1 : Continuity should exist.
LIIA1260E

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Front Power Window Motor RH Circuit CheckEIS005Y2
1. CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH OUTPUT SIGNAL
1. Connect power window and door lock/unlock switch RH.
2. Turn ignition switch ON.
3. Check voltage between power window and door lock/unlock switch RH connector D105 terminals 8, 9 and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace power window and door lock/unlock switch RH. Refer to EI-32, "
REMOVAL" .
2. CHECK FRONT POWER WINDOW MOTOR RH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front power window motor RH and power window and door lock/unlock switch RH.
3. Check continuity between power window and door lock/unlock switch RH connector D105 terminals 8, 9 and front power win-
dow motor RH connector D104 terminals 1, 2.
OK or NG
OK >> Replace front power window motor RH. Refer to GW-66,
"FRONT DOOR GLASS REGULATOR" .
NG >> Repair or replace harness.
Limit Switch Circuit Check Front LHEIS005Y3
1. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH LIMIT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/ unlock switch connector D7 termimal 9 and ground.
OK or NG
OK >> Limit switch circuit is OK.
NG >> GO TO 2.
Connector Terminals
ConditionVoltage (V)
(Approx.)
(+) (-)
D105 9
Ground UP
0
DOWN Battery voltage
8 UP Battery voltage
DOWN 0
LIIA1261E
8 - 2 : Continuity should exist.
9 - 1 : Continuity should exist.
LIIA1262E
ConnectorTerminal
Condition Voltage (V)
(Approx.)
(+) (-)
D7 9 Ground Front power window LH is
between fully-open and just
before fully-closed position
(ON)
0
Front power window LH is
between just before fully-
closed position and fully-
closed position (OFF) 5
LIIA0339E

GW-42
POWER WINDOW SYSTEM
Revision: November 20092006 QX56
2. CHECK FRONT POWER WINDOW MOTOR LH LIMIT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect front power window motor LH.
3. Turn ignition switch ON.
4. Check voltage between front power window motor LH connector D9 terminal 5 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3. CHECK LIMIT SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between front power window motor LH connec- tor D9 terminal 6 and ground.
OK or NG
OK >> Replace front power window motor LH. Refer to GW-66,
"FRONT DOOR GLASS REGULATOR" .
NG >> GO TO 4.
4. CHECK HARNESS CONTINUITY
1. Disconnect main power window and door lock/unlock switch.
2. Check continuity between front power window motor LH connec- tor D9 terminal 6 and main power window and door lock/unlock
switch connector D7 terminal 2.
OK or NG
OK >> Replace main power window and door lock/unlock switch. Refer to EI-32, "
REMOVAL" .
NG >> Repair or replace harness.
5. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch.
3. Check continuity between front power window motor LH connec- tor D9 terminal 5 and main power window and door lock/unlock
switch connector D7 terminal 9.
OK or NG
OK >> Replace main power window and door lock/unlock switch. Refer to EI-32, "
REMOVAL" .
NG >> Repair or replace harness. 5 - Ground : Approx. 5V
LIIA0922E
6 - Ground
: Continuity should exist.
LIIA0923E
6 - 2: Continuity should exist.
LIIA0924E
5 - 9: Continuity should exist.
LIIA0925E

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Limit Switch Circuit Check Front RHEIS005Y4
1. CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH LIMIT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between power window motor RH connector D105 terminal 15 and ground.
OK or NG
OK >> Limit switch circuit is OK.
NG >> GO TO 2.
2. CHECK FRONT POWER WINDOW MOTOR RH LIMIT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect front power window motor RH.
3. Turn ignition switch ON.
4. Check voltage between front power window motor RH connector D104 terminal 5 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3. CHECK LIMIT SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between front power window motor RH con- nector D104 terminal 6 and ground.
OK or NG
OK >> Replace front power window motor RH. Refer to GW-66,
"FRONT DOOR GLASS REGULATOR" .
NG >> GO TO 4.
Connector Te r m i n a l s
Condition Voltage (V)
(Approx.)
(+) (-)
D105 15 Ground Front power window RH is
between fully-open and just
before fully-closed position
(ON)
0
Front power window RH is
between just before fully-
closed position and fully-
closed position (OFF) 5
LIIA1263E
5 - Ground
: Approx. 5V
LIIA0922E
6 - Ground: Continuity should exist.
LIIA0923E

GW-44
POWER WINDOW SYSTEM
Revision: November 20092006 QX56
4. CHECK HARNESS CONTINUITY
1. Disconnect power window and door lock/unlock switch RH.
2. Check continuity between front power window motor RH con- nector D104 terminal 6 and power window and door lock/unlock
switch RH connector D105 terminal 3.
OK or NG
OK >> Replace power window and door lock/unlock switch RH. Refer to EI-32, "
REMOVAL" .
NG >> Repair or replace harness.
5. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect power window and door lock/unlock switch RH.
3. Check continuity between power window and door lock/unlock switch RH connector D105 terminal 15 and front power window
motor RH connector D104 terminal 5.
OK or NG
OK >> Replace power window and door lock/unlock switch RH. Refer to EI-32, "
REMOVAL" .
NG >> Repair or replace harness.
Encoder Circuit Check Front LHEIS005Y5
1. CHECK FRONT POWER WINDOW MOTOR LH POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect front power window motor LH.
3. Turn ignition switch ON.
4. Check voltage between front power window motor LH connector D9 terminal 4 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch.
3. Check continuity between front power window motor LH connec- tor D9 terminal 4 and main power window and door lock/unlock
switch connector D7 terminal 15.
OK or NG
OK >> Replace main power window and door lock/unlock switch. Refer to EI-32, "
REMOVAL" .
NG >> Repair or replace harness. 6 - 3 : Continuity should exist.
LIIA1264E
15 - 5
: Continuity should exist.
LIIA1265E
4 - Ground: Approx. 10V
WIIA0513E
4 - 15 : Continuity should exist.
LIIA0936E

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3. CHECK ENCODER GROUND
1. Turn ignition switch OFF.
2. Check continuity between front power window motor LH connec- tor D9 terminal 6 and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. CHECK ENCODER GROUND CIRCUIT
1. Disconnect main power window and door lock/unlock switch.
2. Check continuity between front power window motor LH connec- tor D9 terminal 6 and main power window and door lock/unlock
switch connector D7 terminal 2.
OK or NG
OK >> Replace main power window and door lock/unlock switch. Refer to EI-32, "
REMOVAL" .
NG >> Repair or replace harness.
5. CHECK ENCODER SIGNAL
1. Connect front power window motor LH.
2. Turn ignition switch ON.
3. Check the signal between main power window and door lock/ unlock switch connector and ground with oscilloscope.
OK or NG
OK >> Replace main power window and door lock/unlock switch. Refer to EI-32, "REMOVAL" .
NG >> GO TO 6. 6 - Ground
: Continuity should exist.
LIIA0923E
6 - 2: Continuity should exist.
LIIA0924E
Connec-
tor Terminals
Condition Signal
(+) (-)
D7 13 Ground Opening
LIIA0364E
OCC3383D