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Power Windows: Other Lexus LX J100

Windows 4 illustrations ~3039 words

ADJUSTING METHOD FOR JAM PROTECTION

Note. Use this procedure when power window motor has been replaced or when power window motor has been run while removed from vehicle. If adjusting does not correct window operation, see LIMIT SWITCH (JAM PROTECTION) TEST under CIRCUIT TESTS.

To adjust limit switch to OFF position, connect motor to harness connector and operate power window motor in UP direction for 4-5 seconds. This sets limit switch to full UP position (OFF).

ANY POWER WINDOW INOPERATIVE

  1. Remove driver's power window master switch with connector attached. Measure voltage by backprobing between master switch terminal No. 6 and ground. (Scheme 6) With master window lock switch in LOCK position, voltage should be zero volts. With master window lock switch in NEUTRAL position, voltage should be 10-14 volts. If voltage is as specified, go to next step. If voltage is not as specified, replace master power window switch.
  2. Remove power window control switch where window operation is faulty and remove connector from control switch. Place master window lock switch in NEUTRAL position. Turn ignition switch to ON position. Measure voltage between appropriate power window control switch harness connector terminal No. 11 and ground. (Scheme 7) Voltage should be 10-14 volts. If voltage is as specified, go to next step. If voltage is not as specified, repair open in Yellow/Black wire between master power window control switch terminal No. 6 and appropriate power window control switch terminal No. 11. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).
  3. Measure voltage between appropriate power window control switch harness connector terminal No. 7 and ground. (Scheme 7) Voltage should be 10-14 volts. If voltage is as specified, go to next step. If voltage is not as specified, repair open in Red wire between POWER fuse and affected power window control switch terminal No. 7. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).
  4. Turn ignition switch to OFF position. Check for continuity between appropriate power window control switch harness connector terminal No. 12 (White/Black wire) and ground. (Scheme 7) If continuity is present, go to next step. If continuity is not present, repair open in White/Black wire between affected power window control switch terminal No. 12 and ground. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).
  5. Connect jumper wire from 12-volt battery positive terminal to appropriate power window control switch harness connector terminal No. 6. (Scheme 7) Connect another jumper wire from battery negative terminal to power window control switch harness connector terminal No. 1. Window glass should raise. Reverse polarity on jumper wires and window glass should lower. If power window motor does not operate as specified, go to next step. If power window motor operates as specified, fault may be intermittent. Check all connectors and terminals for poor connection and retest. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).
  6. Check power window motor operation. See appropriate «POWER WINDOW MOTOR TEST»(ref-4408-S16588980062000062200000) under COMPONENT TESTS. If power window motor operates correctly, go to next step. If power window motor does not operate correctly, replace power window motor.
  7. Check for continuity in Yellow wire between power window control switch harness connector terminal No. 1 and power window motor harness connector terminal No. 4. (Scheme 7)and (Scheme 9). Check for continuity in Green wire between power window control switch harness connector terminal No. 6 and power window motor harness connector terminal No. 1. If continuity is present at both measurements, fault may be intermittent. Check all connectors and terminals for poor connection and retest. If continuity is not present, repair open in appropriate wire and retest. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).

AUTO REVERSE INOPERATIVE WITH OBSTRUCTION IN WINDOW

Note. This test diagnoses inoperative AUTO REVERSE operation (jam function) when foreign object restricts window up operation. AUTO REVERSE mode will not operate when window is within .157" (4 mm) of fully open position.

  1. Ensure all power window modes function normally (i.e., UP, DOWN, AUTO UP, AUTO DOWN and key OFF). If all modes function normally, go to next step. If all modes do not function normally, perform appropriate symptom test.
  2. AUTO REVERSE should operate when there is resistance to power window motor while raising window. If window opening is greater than 7.874" (200 mm) when window glass travel is obstructed, window will automatically lower 1.969" (50 mm) and stop. If window opening is 7.874" (200 mm) or less when window glass travel is obstructed, window will automatically lower until opening is 7.874" (200 mm) and stop. If operation is as specified, system is okay at this time. If operation is not as specified, go to next step.
  3. Check power window motor limit switches for proper adjustment. See «ADJUSTING METHOD FOR JAM PROTECTION»(ref-4408-S18475287572000062200000) under ADJUSTMENTS. Ensure power window motor is installed correctly. If motor is installed correctly and AUTO REVERSE still does not operate as specified, replace power window master switch or power window control switch.

AUTO REVERSE OPERATES IN AUTO UP MODE

If AUTO REVERSE mode operates when window is being raised in AUTO UP mode. Check door glass run, window regulator, window motor or window guide for sign of damage or misalignment. Resistance in window glass movement causes window to reverse direction. Check power window motor limit switches for proper adjustment. See ADJUSTING METHOD FOR JAM PROTECTION under ADJUSTMENTS. If all mechanical checks are okay, replace appropriate power window switch with a known-good unit and retest.

AUTO UP & AUTO DOWN INOPERATIVE (ANY SWITCH)

  1. Remove the affected switch where AUTO UP and AUTO DOWN mode is inoperative. With switch connector attached, measure voltage by backprobing between appropriate terminals and ground. See «WINDOW SWITCH VOLTAGE TEST»(ref-4408-S15504701242000062200000) table. If switch voltages are as specified, go to next step. If switch voltages are not as specified, replace defective window switch. WINDOW SWITCH VOLTAGE TEST Switch & Terminal No. Switch Position Voltage Power Window Master Switch 13 (Blue/Yellow wire) Fully Open Less Than 1 Fully Closed 10-14 Volts OFF 0 Volts 12 (Blue/White wire) During Window Operation About 5.5 Volts All Other Window Switches 3 (Blue/Yellow wire) Fully Open Less Than 1 Fully Closed 10-14 Volts OFF 0 Volts 4 (Blue/White wire) During Window Operation About 5.5 Volts
  2. Check continuity by backprobing Brown/Black wire between driver's power window master switch terminal No. 10 (terminal No. 2 on all other power window control switches) and ground. Continuity should be present in all switch positions. If continuity is as specified, go to next step. If continuity is not as specified, replace defective window switch.
  3. Remove affected power window switch harness connector and power window motor harness connector. Check for continuity in harness between appropriate power window switch connector and power window motor connector. See «POWER WINDOW HARNESS CONTINUITY TEST»(ref-4408-S42821747892000062200000) table. If continuity is present, go to next step. If continuity is not present, repair open in appropriate wire. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000) . POWER WINDOW HARNESS CONTINUITY TEST Switch & Terminal No. Window Motor Terminal No. Power Window Master Switch 13 2 12 3 10 5 All Other Power Window Switches 3 2 4 3 2 5
  4. If power window master switch is to be tested, go to next step. If any other power window control switch is to be tested, go to step 6 .
  5. With driver's power window motor disconnected, check for continuity between power window master switch harness connector terminals No. 13, 12 and 10. If continuity is not present, go to step 7 . If continuity is present at any measurement, repair short between affected wires. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000) .
  6. With appropriate power window motor disconnected, check for continuity between appropriate power window control switch harness connector terminals No. 3, 4 and 2. If continuity is not present, go to next step. If continuity is present at any measurement, repair short between affected wires. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000) .
  7. Connect power window motor and replace power window master switch or power window control switch with a known-good switch. Check AUTO UP and AUTO DOWN mode operation. If AUTO UP or AUTO DOWN operation is not correct, check power window motor operation. See appropriate «POWER WINDOW MOTOR TEST»(ref-4408-S16588980062000062200000) under COMPONENT TESTS. If AUTO UP or AUTO DOWN operation is correct, replace defective power window master switch or power window control switch.

DRIVER'S POWER WINDOW INOPERATIVE

  1. Lower driver's power window glass. Remove power window master switch (driver's side) and remove connector. Measure voltage between master switch harness connector terminal No. 1 and ground. (Scheme 6) If voltage is 10-14 volts, go to next step. If voltage is not 10-14 volts, repair open in harness between terminal No. 1 (Red wire) and 40-amp POWER fuse. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).
  2. Turn ignition switch to ON position and measure voltage between master switch harness connector terminal No. 3 and ground. (Scheme 6) If voltage is 10-14 volts, go to next step. If voltage is not 10-14 volts, repair open in harness between power main relay terminal No. 3 (Blue wire) and master switch terminal No. 3. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).
  3. Turn ignition switch to OFF position. Check for continuity between master switch terminal No. 9 and ground. (Scheme 6) If continuity is present, go to next step. If continuity is not present, repair open in harness between master switch terminal No. 9 (White/Black wire) and ground. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).
  4. Connect a jumper wire between 12-volt battery positive terminal and master switch terminal No. 20. (Scheme 6) Connect another jumper wire between battery negative terminal and master switch terminal No. 8. Window glass should raise. Reverse polarity on jumper wires. Window glass should lower. If window operation is not as specified, go to next step. If window operation is as specified, replace driver's power window master switch.
  5. Check power window motor operation. See appropriate «POWER WINDOW MOTOR TEST»(ref-4408-S16588980062000062200000) under COMPONENT TESTS. If power window motor operates correctly, go to next step. If power window motor does not operate correctly, replace power window motor.
  6. Check for continuity in Yellow wire between driver's power window switch harness connector terminal No. 20 and power window motor harness connector terminal No. 4. (Scheme 6)and (Scheme 7). Check for continuity in Green wire between driver's power window switch harness connector terminal No. 8 and power window motor harness connector terminal No. 1. If continuity is present at both points, fault may be intermittent. Check all connectors and terminals for poor connection and retest. If continuity is not present, repair open in appropriate wire and retest. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).

Scheme 6

Scheme 6

PASSENGER OR REAR WINDOWS INOPERATIVE FROM MASTER SWITCH ONLY

  1. Remove driver's power window master switch with connector attached. Turn ignition switch to ON position. Measure voltage by backprobing between window master switch harness connector terminal No. 18 (Red/Blue wire) and ground. (Scheme 7) Voltage should be 10-14 volts. If voltage is as specified, go to next step. If voltage is not as specified, replace power window master switch.
  2. Remove power window control switch where window operation is faulty, and remove connector from power window control switch. Place master window lock switch in NEUTRAL position. Turn ignition switch to ON position. Measure voltage between appropriate power window control switch harness connector terminal No. 8 and ground. (Scheme 7) Voltage should be 10-14 volts. If voltage is as specified, go to next step. If voltage is not as specified, repair open in Red/Blue wire between affected window switch and power window master switch.
  3. Exchange defective power window control switch with a power window control switch from another window. Check power window master switch operation for the affected window. If window is now operating correctly from power window master switch, replace the defective power window control switch. If power window does not operate correctly from master power window switch, replace driver's power window master switch.

Scheme 7

Scheme 7

WITH IGNITION TURNED OFF, POWER WINDOW IS INOPERATIVE

Note. Power windows can be operated for up to 43 seconds after ignition is turned to OFF position. If any door is opened during the 43-second time period, power window operation is stopped.

  1. Ensure driver's courtesy light switch operates correctly. If driver's courtesy light operates correctly, go to next step. If courtesy light switch does not operate correctly, repair as necessary. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).
  2. Remove instrument ECU and remove 22-pin connector. With driver's door open, check for continuity between instrument ECU harness connector terminal No. 14 and ground. (Scheme 8) If continuity is present, go to next step. If continuity is not present, repair open in Light Blue wire between instrument ECU and driver's courtesy light switch ground point. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).
  3. Connect instrument ECU 22-pin connector. Open driver's door. Turn ignition switch from ON to OFF position. Measure voltage by backprobing between instrument ECU 14-pin harness connector terminal No. 6 and ground. (Scheme 8) Voltage should be 10-14 volts. If voltage is not as specified, repair open in Light Blue wire between instrument ECU and power main relay. See «WIRING DIAGRAMS»(ref-4408-S03194281612000062200000).

Scheme 8

Scheme 8

CIRCUIT TESTS

Note. System circuit breaker opens 4-40 seconds after window operation stops. Ensure circuit tests are performed before circuit breaker operates.

Window Up

  1. Lower window glass for window being tested. Disconnect 5-pin connector from power window motor. Check continuity between power window motor connector terminals No. 2 and 5. (Scheme 9) Connect jumper wire from positive terminal of 12-volt battery to power window motor connector terminal No. 1.
  2. Connect another jumper wire from negative terminal of battery to power window motor connector terminal No. 4. Ensure continuity exists while window raises to fully closed position. Continuity should not exist once window stops at fully closed position. If continuity is as specified, limit switch is okay at this time. If continuity is not as specified, replace power window motor.

Scheme 9

Scheme 9

Window Down

  1. Ensure window glass for window being tested is fully raised. Disconnect 5-pin connector from power window motor. Check continuity between power window motor connector terminals No. 2 and 5. (Scheme 9) Connect jumper wire from positive terminal of 12-volt battery to power window motor connector terminal No. 4.
  2. Connect another jumper wire from negative terminal of battery to power window motor connector terminal No. 1. Ensure continuity exists while window lowers to fully open position. Continuity should not exist once window stops at fully opened position. If continuity is as specified, limit switch is okay at this time. If continuity is not as specified, replace power window motor.

Driver's Master Window Switch

Measure voltage by backprobing between master window switch appropriate terminal and ground. Leave master window switch connected to wiring harness, unless indicated. See POWER WINDOW SWITCH VOLTAGE TEST (1 OF 2) table. If voltage is as specified, go to CONTINUITY CHECKS. If voltage is not as specified, repair affected circuit. See WIRING DIAGRAMS .

Terminal No. (1)ConditionVolts
1(2) At All Times10-14
3(2) Ignition Switch In LOCK PositionZero
3(2) Ignition Switch In ACC Or ON Position10-14
6Ignition Switch ON, Window Lock Switch OFF10-14
6Ignition Switch ON, Window Lock Switch ONZero
8Ignition Switch ON, Master Switch OFFZero
8Ignition Switch ON, Master Switch DOWNMore Than 9
8Ignition Switch ON, Driver Window Glass ClosedZero
8Ignition Switch ON, Master Switch AUTO DOWNMore Than 9
8Ignition Switch ON, Driver Window Glass OpenedZero
12Power Window OperatingAbout 5.5
13Master Switch DOWN, Driver Window Glass OpenedBelow 1
18Ignition Switch ON2.5
20Ignition Switch ON, Master Switch OFFZero
20Ignition Switch ON, Master Switch DOWNMore Than 9
20Ignition Switch ON, Driver Window Glass ClosedZero
20Ignition Switch ON, Master Switch AUTO UPMore Than 9
20Ignition Switch ON, Driver Window Glass OpenedZero
(1) For terminal locations (Scheme 6) (2) Tests are made with master switch disconnected from vehicle wiring harness.
(1)For terminal locations (Scheme 6)
(2)Tests are made with master switch disconnected from vehicle wiring harness.

POWER WINDOW SWITCH VOLTAGE TEST (1 OF 2)

With master window switch still connected, check continuity by backprobing between master window switch terminal No. 10 and ground. Disconnect master window switch and check continuity between master window switch terminal No. 9 and ground. Continuity should be present at both measurements at all times. If continuity is not present at either measurement, repair affected circuit. See WIRING DIAGRAMS . If continuity is present at both measurements, circuits are okay at this time.

Passenger & Both Rear Window Switches

Measure voltage by backprobing between window control switch appropriate terminal and ground. Leave window control switch connected to wiring harness, unless indicated. See POWER WINDOW SWITCH VOLTAGE TEST (2 OF 2) table. If voltage is as specified, go to CONTINUITY CHECKS. If voltage is not as specified, repair affected circuit. See WIRING DIAGRAMS .

Terminal No. (1)ConditionVolts
1Ignition Switch ON, Master Switch OFFZero
1Ignition Switch ON, Master Switch DOWNMore Than 9
1Ignition Switch ON, Driver Window Glass ClosedZero
1Ignition Switch ON, Master Switch AUTO UPMore Than 9
1Ignition Switch ON, Driver Window Glass OpenedZero
3Master Switch DOWN, Driver Window Glass OpenedBelow 1
3Master Switch UP, Driver Window Glass Closed10-14
3Driver Window Glass Closed, Master Switch OFFZero
4Power Window OperatingAbout 5.5
6Ignition Switch ON, Master Switch OFFZero
6Ignition Switch ON, Master Switch DOWNMore Than 9
6Ignition Switch ON, Driver Window Glass ClosedZero
6Ignition Switch ON, Master Switch AUTO DOWNMore Than 9
6Ignition Switch ON, Driver Window Glass OpenedZero
7(2) At All Times10-14
8(2) Ignition Switch In LOCK PositionZero
8(2) Ignition Switch In ACC Or ON Position10-14
11(2) Ignition Switch ON, Master Lock Switch OFF10-14
11(2) Ignition Switch ON, Master Lock Switch ONZero
(1) For terminal locations (Scheme 6) (2) Tests are made with window control switch disconnected from vehicle wiring harness.
(1)For terminal locations (Scheme 6)
(2)Tests are made with window control switch disconnected from vehicle wiring harness.

POWER WINDOW SWITCH VOLTAGE TEST (2 OF 2)

With window control switch still connected, check continuity by backprobing between window control switch terminal No. 10 and ground. Disconnect window control switch and check continuity between window control switch terminal No. 9 and ground. Continuity should be present at both points at all times. If continuity is not present at either point, repair affected circuit. See WIRING DIAGRAMS . If continuity is present at both points, circuits are okay at this time.

Driver's Side Motor

  1. Slightly lower driver's window. Disconnect 20-pin connector from driver's power window master switch. Connect jumper wire from positive terminal of 12-volt battery to master switch harness connector terminal No. 20. (Scheme 6) Connect another jumper wire from negative terminal of battery to master switch harness connector terminal No. 8. Window should raise to fully closed position. If window operates correctly, go to next step. If window does not operate correctly, go to appropriate «POWER WINDOW MOTOR TEST»(ref-4408-S16588980062000062200000) under COMPONENT TESTS.
  2. Continue to apply voltage until there is an audible click from power window motor circuit breaker (within 4-90 seconds). Reverse polarity and ensure window begins to descend within about 60 seconds. If operation is not as specified, replace power window motor. If operation is as specified, power window motor circuit breaker is okay.

Passenger's Side Motor

  1. Slightly lower driver's window. Disconnect 12-pin connector from passenger's power window control switch. Connect jumper wire from positive terminal of 12-volt battery to power window control switch harness connector terminal No. 1. (Scheme 7) Connect another jumper wire from negative terminal of battery to power window control switch harness connector terminal No. 6. Window should raise to fully closed position. If window operates correctly, go to next step. If window does not operate correctly, go to appropriate «POWER WINDOW MOTOR TEST»(ref-4408-S16588980062000062200000) under COMPONENT TESTS.
  2. Continue to apply voltage until there is an audible click from power window motor circuit breaker (within 4-90 seconds). Reverse polarity and ensure window begins to descend within about 60 seconds. If operation is not as specified, replace power window motor. If operation is as specified, power window motor circuit breaker is okay.

Driver's & Right Rear Quarter Window

Using a 12-volt battery, connect positive battery lead to power window motor terminal No. 1. (Scheme 9) Connect negative battery lead to power window motor connector terminal No. 4. Motor should operate. Reverse battery leads. Motor should operate in opposite direction. If motor does not test as specified, replace motor.

Passenger's & Left Rear Quarter Window

Using a 12-volt battery, connect positive battery lead to either power window motor terminal. Connect negative battery lead to other power window motor connector terminal. Motor should operate. Reverse battery leads. Motor should operate in opposite direction. If motor does not test as specified, replace motor.

POWER WINDOW MOTOR

Note. When removing or replacing power window motor, always perform ADJUSTING METHOD FOR JAM PROTECTION under ADJUSTMENTS.