Infiniti F50. Manual — part 591
POWER WINDOW SYSTEM
GW-35
C
D
E
F
G
H
J
K
L
M
A
B
GW
2.
LIMIT SWITCH GROUND CHECK
1.
Turn ignition switch OFF.
2.
Disconnect rear power window regulator LH or RH connector.
3.
Check continuity between rear power window regulator LH or RH connector D57(LH) or D77(RH) terminal
4 and ground.
OK or NG?
OK
>> GO TO 3
NG
>> Repair or replace harness.
3.
CHECK REAR POWER WINDOW REGULATOR CIRCUIT
1.
Disconnect rear door control unit LH or RH connector.
2.
Check continuity between rear power window regulator LH or RH connector D57(LH), D77(RH) terminal 2
and rear door control unit LH or RH connector D58(LH),D78(RH) terminal 16.
3.
Check continuity between rear power window regulator connec-
tor D57(LH), D77(RH) terminal 2 and ground.
OK or NG?
OK
>> GO TO 4.
NG
>> Repair or replace harness between rear door control
unit LH or RH and rear power window regulator LH or
RH.
4.
LIMIT SWITCH OUTPUT SIGNAL CHECK
1.
Connect rear door control unit connector.
2.
Turn ignition switch ON.
3.
Check voltage between rear door control unit LH or RH connec-
tor D58 (LH), D78 (RH) terminal 16 and ground.
OK or NG
OK
>> Replace rear power window regulator LH or RH.
NG
>> Replace rear door control unit LH or RH.
4 (B) – Ground
:Continuity should exist.
PIIA2990E
2 (OR) – 16(OR)
:Continuity should exist.
2 (OR) – Ground
:Continuity should not exist.
PIIA2989E
16 (OR) – Ground
:Approx 5V
PIIA2991E
GW-36
POWER WINDOW SYSTEM
Encoder Circuit Check (driver side)
EIS000JG
1.
CHECK FRONT POWER WINDOW REGULATOR (DRIVER SIDE) CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between front power window regulator (driver side) connector D7 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 driver door control unit (LCU01) and front power window regulator (driver side) connector.
3.
Check continuity between driver door control unit (LCU01) connector D8 terminal 4 and front power win-
dow regulator (driver side) connector D7 terminal 4.
OK or NG?
OK
>> Replace driver door control unit (LCU01).
NG
>> Repair or replace harness between driver door control
unit (LCU01) and front power window regulator (driver
side).
3.
CHECK ENCODER GROUND
1.
Turn ignition switch OFF.
2.
Disconnect front power window regulator (driver side) connector.
3.
Check continuity between front power window regulator (driver side) connector D7 terminal 6 and ground.
OK or NG?
OK
>> GO TO 4
NG
>> Repair or replace harness.
4 (W) – Ground
:Approx. 10V
PIIA2994E
4 (W) – 4 (W)
:Continuity should exist.
PIIA2995E
6 (B) – Ground
:Continuity should exist.
PIIA2996E
POWER WINDOW SYSTEM
GW-37
C
D
E
F
G
H
J
K
L
M
A
B
GW
4.
CHECK ENCODER SIGNAL
1.
Connect front power window regulator (driver side) connector.
2.
Turn ignition switch ON.
3.
Check the signal between driver door control unit (LCU01) connector and ground with oscilloscope.
OK or NG?
OK
>> Encoder function is OK.
NG
>> GO TO 5
5.
CHECK ENCODER CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect driver door control unit and front power window regulator (driver side) connector.
3.
Check continuity between driver door control unit (LCU01) connector D8 terminal 1 and front power win-
dow regulator (driver side) connector D7 terminal 3.
OK or NG?
OK
>> Replace front power window motor (driver side).
NG
>> Repair or replace harness between driver door control
unit (LCU01) and front power window regulator (driver
side).
Encoder Circuit Check (passenger side)
EIS003PW
1.
CHECK FRONT POWER WINDOW REGULATOR (PASSENGER SIDE) CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between front power window regulator (passenger side) connector D37 terminal 4 and
ground.
OK or NG?
OK
>> GO TO 3
NG
>> GO TO 2
Terminals
Condition
Signal
(+)
(–)
Connector
Terminal
(Wire color)
Ground
D8
1(G)
Opening
PIIA2997E
OCC3383D
1 (G) – 3 (G)
:Continuity should exist.
PIIA2998E
4 (W) – Ground
:Approx. 10V
PIIA2999E
GW-38
POWER WINDOW SYSTEM
2.
CHECK HARNESS CONTINUITY
1.
Turn ignition switch OFF.
2.
Disconnect passenger door control unit and front power window regulator (passenger side) connector.
3.
Check continuity between passenger door control unit connector D38 terminal 15 and front power window
regulator (passenger side) connector D37 terminal 4.
OK or NG?
OK
>> Replace passenger door control unit.
NG
>> Repair or replace harness between passenger door
control unit and front power window regulator (passen-
ger side).
3.
CHECK ENCODER GROUND
1.
Turn ignition switch OFF.
2.
Disconnect front power window regulator (passenger side) connector.
3.
Check continuity between front power window regulator (passenger side) connector D37 terminal 6 and
ground.
OK or NG?
OK
>> GO TO 4
NG
>> Repair or replace harness.
4.
CHECK ENCODER SIGNAL
1.
Connect front power window regulator (passenger side) connector.
2.
Turn ignition switch ON.
3.
Check the signal between passenger door control unit connector and ground with oscilloscope.
OK or NG?
OK
>> Encoder function is OK.
NG
>> GO TO 5
15 (W) – 4 (W)
:Continuity should exist.
PIIA3000E
6 (B) – Ground
:Continuity should exist.
PIIA3001E
Terminals
Condition
Signal
(+)
(–)
Connector
Terminal
(Wire color)
Ground
D38
19(G)
Opening
PIIA3002E
OCC3383D
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