Power Window System: Wiring Infiniti Q45 III

Wiring Diagram - WINDOW

Note. For wiring diagram references to PG-POWER , see POWER DISTRIBUTION and GROUND DISTRIBUTION .

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1. Check that other systems using the signal of the following systems operate normally.

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1. CHECK COMMUNICATION CIRCUIT Turn ignition switch OFF. Disconnect connectors for driver door control unit (LCU01) and malfunctioning door control unit. Check continuity between driver door control unit (LCU01) connector terminal 5 and malfunctioning door control unit connector terminal 11. Check continuity between driver door control unit (LCU01) connector terminal 5 and ground. 5 (G/OR) - Ground : Continuity should not exist. OK or NG? OK >> GO TO 2 NG >> Repair or replace harness
2. CHECK COMMUNICATION SIGNAL Connect driver door control unit (LCU01) and malfunctioning door control unit connector. Check the signal between malfunctioning door control unit connector terminal 11 and ground with oscilloscope. OK or NG? OK >> Communication signal is OK. NG >> All door control unit (passenger, rear LH or RH) connected are NG.--> Replace driver door control unit (LCU01). Any of door control unit (passenger, rear LH or RH) connected are NG.--> Replace malfunctioning door control unit.

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1. CHECK DRIVER DOOR CONTROL UNIT OUTPUT SIGNAL Turn ignition switch ON. Check voltage between front power window regulator (driver side) connector and ground. OK or NG? OK >> Replace front power window motor (driver side). NG >> GO TO 2
2. CHECK DRIVER POWER WINDOW MOTOR CIRCUIT Turn ignition switch OFF. Disconnect front power window regulator (driver side) connector and driver door control unit (LCU01) connector. Check continuity between front power window regulator (driver side) connector D7 terminals 1, 2 and driver door control unit (LCU01) connector D8 terminals 11, 18. 1 (L/W) - 11 (L/W) : Continuity should exist. 2 (L/R) - 18 (L/R) : Continuity should exist. Check continuity between front power window regulator (driver side) connector D7 terminals 1, 2 and ground. 1 (L/W) - Ground : Continuity should not exist. 2 (L/R) - Ground : Continuity should not exist. 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).

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1. CHECK PASSENGER DOOR CONTROL UNIT OUTPUT SIGNAL Turn ignition switch ON. Check voltage between front power window regulator (passenger side) connector and ground. OK or NG? OK >> Replace front power window motor (passenger side). NG >> GO TO 2
2. CHECK FRONT POWER WINDOW REGULATOR (PASSENGER SIDE) CIRCUIT Turn ignition switch OFF. Disconnect front power window regulator (passenger side) and passenger door control unit connector. Check continuity between front power window regulator (passenger side) connector D37 terminals 1, 2 and passenger door control unit connector D39 terminals 4, 5. 1 (L/W) - 4 (L/W) : Continuity should exist. 2 (L/R) - 5 (L/R) : Continuity should exist. Check continuity between front power window regulator (passenger side) connector D37 terminals 1, 2 and ground. 1 (L/W) - Ground : Continuity should not exist. 2 (L/R) - Ground : Continuity should not exist. OK or NG? OK >> Replace passenger door control unit. NG >> Repair or replace harness between front power window regulator (passenger side) and passenger door control unit.

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1. CHECK REAR DOOR CONTROL UNIT LH OR RH OUTPUT SIGNAL Turn ignition switch OFF. Disconnect rear power window regulator LH or RH. Turn ignition switch ON. Check voltage between rear power window regulator LH or RH connector and ground. OK or NG? OK >> Replace rear power window motor LH or RH. NG >> GO TO 2
2. CHECK REAR POWER WINDOW REGULATOR LH OR RH CIRCUIT Turn ignition switch OFF. Disconnect rear door control LH or RH unit connector. Check continuity between rear power window regulator LH or RH connector D57(LH) or D77(RH) terminals 1, 3 and rear door control unit LH or RH connector D59(LH) or D79(RH) terminals 4, 5. 1 (L/W) - 4 (L/W) : Continuity should exist. 3 (L/R) - 5 (L/R) : Continuity should exist. Check continuity between rear power window regulator LH or RH connector D59(LH) or D79(RH) terminals 1, 3 and ground. 1 (L/W) - Ground : Continuity should not exist. 3 (L/R) - Ground : Continuity should not exist. OK or NG? OK >> Replace rear door control unit LH or RH. NG >> Repair or replace harness between rear door control unit LH or RH and rear power window regulator LH or RH.

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1. LIMIT SWITCH SIGNAL CHECK Turn the ignition switch ON. Check voltage between front power window regulator (driver side) connector and ground. OK or NG? OK >> Limit switch (driver side) circuit is OK. NG >> GO TO 2
2. LIMIT SWITCH GROUND CHECK Turn ignition switch OFF. Disconnect front power window regulator (driver side) connector. Check continuity between front power window regulator (driver side) connector D7 terminal 6 and ground. 6 (B) - Ground : Continuity should exist. OK or NG? OK >> GO TO 3 NG >> Repair or replace harness.
3. FRONT POWER WINDOW REGULATOR (DRIVER SIDE) CIRCUIT CHECK Disconnect driver door control unit (door LCU01) connector. Check continuity between power window regulator (driver side) connector D7 terminal 5 and driver door control unit (LCU01) connector D8 terminal 7. 5 (PU) - 7 (PU) : Continuity should exist. Check continuity between power window regulator (driver side) connector D7 terminal 5 and ground. 5 (PU) - Ground : Continuity should not exist. OK or NG? OK >> GO TO 4. NG >> Repair or replace harness between driver door control unit (LCU01) and front power window regulator (driver side).
4. LIMIT SWITCH CHECK Connect driver door control unit (LCU01) connector. Turn ignition switch ON. Check voltage between front power window regulator (driver side) connector D7 terminal 5 and ground. 5 (PU) - Ground : Approx. 5V OK or NG OK >> Replace front power window regulator (driver side). NG >> Replace driver door control unit (LCU01).

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1. LIMIT SWITCH SIGNAL CHECK Turn the ignition switch ON. Check voltage between front power window regulator (passenger side) connector and ground. OK or NG? OK >> Limit switch (passenger side) circuit is OK. NG >> GO TO 2
2. LIMIT SWITCH GROUND CHECK Turn ignition switch OFF. Disconnect front power window regulator (passenger side) connector. Check continuity between front power window regulator (passenger side) connector D37 terminal 6 and ground. 6 (B) - Ground : Continuity should exist. OK or NG? OK >> GO TO 3 NG >> Repair or replace harness.
3. CHECK POWER WINDOW MOTOR CIRCUIT Disconnect passenger door control unit connector. Check continuity between front power window regulator (passenger side) connector D37 terminal 5 and passenger door control unit connector D38 terminal 16. 5 (PU) - 16 (PU) : Continuity should exist. Check continuity between front power window regulator (passenger side) connector D37 terminal 5 and ground. 5 (PU) - Ground : Continuity should not exist. OK or NG? OK >> GO TO 4. NG >> Repair or replace harness between passenger door control unit and front power window regulator (passenger side)
4. LIMIT SWITCH CHECK Connect passenger door control unit connector. Turn ignition switch ON. Check voltage between front power window regulator (passenger side) connector D37 terminal 5 and ground. 5 (PU) - Ground : Approx. 5V OK or NG OK >> Replace front power window regulator (passenger side). NG >> Replace passenger door control unit.

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1. LIMIT SWITCH SIGNAL CHECK Turn the ignition switch ON. Check voltage between rear door control unit connector D58 (LH) or D78 (RH) terminal 16 and ground. OK or NG? OK >> Limit switch rear LH or RH is OK. NG >> GO TO 2
2. LIMIT SWITCH GROUND CHECK Turn ignition switch OFF. Disconnect rear power window regulator LH or RH connector. Check continuity between rear power window regulator LH or RH connector D57(LH) or D77(RH) terminal 4 and ground. 4 (B) - Ground : Continuity should exist. OK or NG? OK >> GO TO 3 NG >> Repair or replace harness.
3. CHECK REAR POWER WINDOW REGULATOR CIRCUIT Disconnect rear door control unit LH or RH connector. 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. 2 (OR) - 16 (OR) : Continuity should exist. Check continuity between rear power window regulator connector D57(LH), D77(RH) terminal 2 and ground. 2 (OR) - Ground : Continuity should not exist. 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 Connect rear door control unit connector. Turn ignition switch ON. Check voltage between rear door control unit LH or RH connector D58 (LH), D78 (RH) terminal 16 and ground. 16 (OR)-Ground : Approx 5V OK or NG OK >> Replace rear power window regulator LH or RH. NG >> Replace rear door control unit LH or RH.

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1. CHECK FRONT POWER WINDOW REGULATOR (DRIVER SIDE) CIRCUIT Turn ignition switch ON. Check voltage between front power window regulator (driver side) connector D7 terminal 4 and ground. 4 (W) - Ground : Approx. 10V OK or NG? OK >> GO TO 3 NG >> GO TO 2
2. CHECK HARNESS CONTINUITY Turn ignition switch OFF. Disconnect driver door control unit (LCU01) and front power window regulator (driver side) connector. Check continuity between driver door control unit (LCU01) connector D8 terminal 4 and front power window regulator (driver side) connector D7 terminal 4. 4 (W) - 4 (W) : Continuity should exist. 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 Turn ignition switch OFF. Disconnect front power window regulator (driver side) connector. Check continuity between front power window regulator (driver side) connector D7 terminal 6 and ground. 4 (B) - Ground : Continuity should exist. OK or NG? OK >> GO TO 4 NG >> Repair or replace harness.
4. CHECK ENCODER SIGNAL Connect front power window regulator (driver side) connector. Turn ignition switch ON. 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 Turn ignition switch OFF. Disconnect driver door control unit and front power window regulator (driver side) connector. Check continuity between driver door control unit (LCU01) connector D8 terminal 1 and front power window regulator (driver side) connector D7 terminal 3. 1 (G) - 3 (G) : Continuity should exist. 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).

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1. CHECK FRONT POWER WINDOW REGULATOR (PASSENGER SIDE) CIRCUIT Turn ignition switch ON. Check voltage between front power window regulator (passenger side) connector D37 terminal 4 and ground. 4 (W) - Ground : Approx. 10V OK or NG? OK >> GO TO 3 NG >> GO TO 2
2. CHECK HARNESS CONTINUITY Turn ignition switch OFF. Disconnect passenger door control unit and front power window regulator (passenger side) connector. Check continuity between passenger door control unit connector D38 terminal 15 and front power window regulator (passenger side) connector D37 terminal 4. 15 (W) - 4 (W) : Continuity should exist. OK or NG? OK >> Replace passenger door control unit. NG >> Repair or replace harness between passenger door control unit and front power window regulator (passenger side).
3. CHECK ENCODER GROUND Turn ignition switch OFF. Disconnect front power window regulator (passenger side) connector. Check continuity between front power window regulator (passenger side) connector D37 terminal 6 and ground. 6 (B) - Ground : Continuity should exist. OK or NG? OK >> GO TO 4 NG >> Repair or replace harness.
4. CHECK ENCODER SIGNAL Connect front power window regulator (passenger side) connector. Turn ignition switch ON. 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
5. CHECK ENCODER CIRCUIT Turn ignition switch OFF. Disconnect passenger door control unit and front power window regulator (passenger side) connector. Check continuity between passenger door control unit connector D38 terminal 19 and front power window regulator (passenger side) connector D37 terminal 3. 19 (G) - 3 (G) : Continuity should exist. OK or NG? OK >> Replace front power window motor (passenger side). NG >> Repair or replace harness between passenger door control unit and front power window regulator (passenger side).

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1. CHECK REAR POWER WINDOW REGULATOR CIRCUIT Turn ignition switch OFF. Disconnect rear power window regulator LH or RH connector. Turn ignition switch ON. Check voltage between rear power window regulator LH or RH connector D57(LH) or D77(RH) terminal 6 and ground. 6 (W) - Ground : Approx. 10V OK or NG? OK >> GO TO 3 NG >> GO TO 2
2. CHECK HARNESS CONTINUITY Turn ignition switch OFF. Disconnect rear door control unit LH or RH and rear power window regulator LH or RH connector. Check continuity between rear door control unit LH or RH connector D58(LH) or D78(RH) terminal 15 and rear power window regulator LH or RH connector D57(LH) or D77(RH) terminal 6. 15 (W) - 6 (W) : Continuity should exist. OK or NG? OK >> Replace rear door control unit LH or RH. NG >> Repair or replace harness between rear door control unit LH or RH and rear power window regulator LH or RH.
3. CHECK ENCODER GROUND Turn ignition switch OFF. Disconnect rear power window regulator LH or RH connector. Check continuity between rear power window regulator LH or RH connector D57(LH) or D77(RH) terminal 4 and ground. 4 (B) - Ground : Continuity should exist. OK or NG? OK >> GO TO 4 NG >> Repair or replace harness.
4. CHECK ENCODER SIGNAL Connect rear power window regulator LH or RH connector. Turn ignition switch ON. Check the signal between rear door control unit LH or RH connector and ground with oscilloscope. OK or NG? OK >> Encoder function is OK. NG >> GO TO 5
5. CHECK ENCODER CIRCUIT Turn ignition switch OFF. Disconnect rear door control unit LH or RH and rear power window regulator LH or RH connector. Check continuity between rear door control unit LH or RH connector D58(LH) or D78(RH) terminal 19 and rear power window regulator LH or RH connector D57(LH) or D77(RH) terminal 5. 19 (G) - 5 (G) : Continuity should exist. OK or NG? OK >> Replace rear power window motor LH or RH. NG >> Repair or replace harness between rear door control unit LH or RH and rear power window regulator LH or RH.

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1. POWER SUPPLY CIRCUIT CHECK Turn ignition switch OFF. Disconnect driver door control unit (LCU01) connector. Check voltage between driver door control unit (LCU01) connector D8 terminal 14 and ground. 14 (Y/G) - Ground : Battery voltage OK or NG OK >> GO TO 2. NG >> Check the following. 40A fusible link (letter H. located in fuse and fusible link box). Harness for open or short between driver door control unit (LCU01) and fuse.
2. GROUND CIRCUIT CHECK Check continuity between driver door control unit (LCU01) connector D8 terminal 15 and ground. 15 (B) - Ground : Continuity should exist. OK or NG OK >> INSPECTION END. NG >> Repair or replace harness.

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1. POWER SUPPLY CIRCUIT CHECK Turn ignition switch OFF. Disconnect passenger door control unit connector. Check voltage between passenger door control unit connector D39 terminal 6 and ground. 6 (W/R) - Ground : Battery voltage OK or NG OK >> GO TO 2. NG >> Check the following. 40A fusible link (letter H. located in fuse and fusible link box). Harness for open or short between passenger door control unit and fuse.
2. GROUND CIRCUIT CHECK Check continuity between passenger door control unit connector D39 terminal 7 and ground. 7 (B) - Ground : Continuity should exist. OK or NG OK >> GO TO 3. NG >> Repair or replace harness.
3. COMMUNICATION CIRCUIT CHECK Disconnect driver door control unit connector. Check continuity between driver door control unit connector D8 terminal 5 and passenger door control unit connector D38 terminal 11. 5 (G/OR) - 11 (G/OR) : Continuity should exist. OK or NG OK >> INSPECTION END. NG >> Repair or replace harness between door control unit and passenger door control unit.

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1. POWER SUPPLY CIRCUIT CHECK Turn ignition switch OFF. Disconnect rear door control unit LH or RH connector. Check voltage between rear door control unit LH or RH connector D59(LH) or D79(RH) terminal 6 and ground. 6 (W/R) - Ground : Battery voltage OK or NG OK >> GO TO 2. NG >> Check the following. 40A fusible link (letter H. located in fuse and fusible link box). Harness for open or short between rear door control unit LH or RH and fuse.
2. GROUND CIRCUIT CHECK Check continuity between passenger door control unit LH or RH connector D59(LH) or D79(RH) terminal 7 and ground. 7 (B) - Ground : Continuity should exist. OK or NG OK >> GO TO 3. NG >> Repair or replace harness.
3. COMMUNICATION CIRCUIT CHECK Disconnect driver door control unit connector. Check continuity between driver door control unit connector D8 terminal 5 and rear door control unit LH or RH connector D58 (LH), D78 (RH) terminal 11. 5 (G/OR) - 11 (G/OR) : Continuity should exist. OK or NG OK >> INSPECTION END. NG >> Repair or replace harness between door control unit and rear door control unit LH or RH.

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1. CHECK DOOR SWITCH INPUT SIGNAL With CONSULT-II Check door switch in "DATE MONITOR" mode with CONSULT-II. When door is opened : DOOR SW ON When door is closed : DOOR SW OFF Without CONSULT-II Check all door switches in switch monitor mode. Refer to Remote keyless entry system "SWITCH MONITOR ". OK or NG OK >> Door switch is OK. NG >> GO TO 2
2. CHECK DOOR SWITCH Turn ignition switch OFF. Disconnect door switch connector. Check continuity between following terminals and ground. OK or NG OK >> Repair or replace following item, when there is a malfunction. Door switch ground condition Harness for open or short between door switch and BCM NG >> Replace door switch.

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WIRING DIAGRAM - SW/ILL

Note. For wiring diagram references to PG-POWER , see POWER DISTRIBUTION and GROUND DISTRIBUTION .

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