Power Window Control System (Diagnostic Codes & Symptom Tests): Overview Lexus GX J150

DESCRIPTION

The power window regulator motor is operated by the multiplex network master switch or power window regulator switch. The power window regulator motor assembly has motor, regulator and ECU functions.

This DTC is stored when the power window regulator motor has a malfunction, or the ECU built into the regulator motor determines that the fully closed window position has deviated approximately 20 mm (0.787 in.) or more from the normal position.

HINT

DTC B2311 can be stored in each power window regulator motor (power window ECU).

D-DOOR MOTOR

P-DOOR MOTOR

RL-DOOR MOTOR

RR-DOOR MOTOR

The power window regulator motor is driven by operating the power window regulator switch. The power window regulator consists of the motor, regulator and ECU.

This DTC is stored when the ECU built into the regulator motor determines that the multiplex network master switch assembly or power window regulator switch assembly is stuck.

HINT

This DTC may be stored for all the windows.

Note. When a power window regulator is reinstalled or replaced, the power window control system must be initialized. After any door glass or a door glass run has been replaced, the jam protection function may operate unexpectedly when the auto up function is used. In such cases, the auto up function can be resumed by repeating the following operation at least 5 times: Close the power window by fully pulling up the power window switch and holding it in the auto up position. Open the power window by fully pushing down the power window switch.

MASTER SWITCH

D-DOOR MOTOR

P-DOOR MOTOR

RL-DOOR MOTOR

RR-DOOR MOTOR

Scheme 126

Scheme 127

Scheme 128

Scheme 129

1. for Front LH
2. for Front RH
3. for Rear LH
4. for Rear RH

Scheme 130

1. CHECK FOR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-524122-S21022408872013012800000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-524122-S21022408872013012800000) . RESULT Result Proceed to No DTCs output A DTC B2312 is output C NG --> See step 2 OK --> END (DTC WAS STORED DUE TO SWITCH BEING OPERATED FOR 20 SECONDS OR MORE)
2. CHECK DTC OUTPUT Check the parts which the DTCs have been output from. RESULT Result Proceed to DTC output from multiplex network master switch A DTC output from front power window regulator motor LH B DTC output from front power window regulator motor RH C DTC output from rear power window regulator motor LH D DTC output from rear power window regulator motor RH E B --> See step 3 C --> See step 5 D --> See step 8 E --> See step 11 A --> See step 14
3. READ VALUE USING TECHSTREAM (MULTIPLEX NETWORK MASTER SWITCH) Use the Data List to check if the power window regulator motor is functioning properly. Refer to «DATA LIST / ACTIVE TEST»(ref-524122-S04183156302013012800000) . D-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door P/W Up SW Driver side power window manual up signal / ON or OFF ON: Driver side power window manual up switch operated OFF: Driver side power window switch not operated - D Door P/W Down SW Driver side power window manual down signal / ON or OFF ON: Driver side power window manual down switch operated OFF: Driver side power window switch not operated - OK On tester screen, each item changes between ON and OFF according to above chart. NG --> See step 4 OK --> See step 18
4. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH) Disconnect the K3 multiplex network master switch connector. Disconnect the K6 power window regulator motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition K3-20 (UP) - K6-10 (UP) Always Below 1 ohms K3-15 (DOWN) - K6-7 (DOWN) Always Below 1 ohms K3-20 (UP) - Body ground Always 10 kohms or higher K3-15 (DOWN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 18
5. READ VALUE USING TECHSTREAM (POWER WINDOW REGULATOR SWITCH RH) Use the Data List to check if the power window regulator motor is functioning properly. Refer to «DATA LIST / ACTIVE TEST»(ref-524122-S04183156302013012800000) . P-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note P Door P/W Auto SW Front passenger side power window auto up/down signal / ON or OFF ON: Front passenger side power window auto up/down switch operated OFF: Front passenger side power window regulator switch not operated - P Door P/W Up SW Front passenger side power window manual up signal / ON or OFF ON: Front passenger side power window manual up switch operated OFF: Front passenger side power window regulator switch not operated - P Door P/W Down SW Front passenger side power window manual down signal / ON or OFF ON: Front passenger side power window manual down switch operated OFF: Front passenger side power window regulator switch not operated - OK On tester screen, each item changes between ON and OFF according to above chart. NG --> See step 6 OK --> See step 19
6. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Remove the power window regulator switch. Refer to «REMOVAL»(ref-524356-S36217979752013012800000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 2 (UP) - 5 (GND) Manual up operation Below 1 ohms 10 (DOWN) - 5 (GND) Manual down operation Below 1 ohms 4 (AUTO) - 5 (GND) Auto up/down operation Below 1 ohms 2 (UP) - 5 (GND) Not operated 10 kohms or higher 10 (DOWN) - 5 (GND) Not operated 10 kohms or higher 4 (AUTO) - 5 (GND) Not operated 10 kohms or higher NG --> See step 15 OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH ASSEMBLY RH - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH) Disconnect the J1 power window regulator switch connector. Disconnect the J6 power window regulator motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition J1-2 (UP) - J6-10 (UP) Always Below 1 ohms J1-10 (DOWN) - J6-7 (DOWN) Always Below 1 ohms J1-4 (AUTO) - J6-4 (AUTO) Always Below 1 ohms J1-2 (UP) - Body ground Always 10 kohms or higher J1-10 (DOWN) - Body ground Always 10 kohms or higher J1-4 (AUTO) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 19
8. READ VALUE USING TECHSTREAM (REAR POWER WINDOW REGULATOR SWITCH LH) Use the Data List to check if the power window regulator motor is functioning properly. Refer to «DATA LIST / ACTIVE TEST»(ref-524122-S04183156302013012800000) . RL-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note RL Door P/W Auto SW Rear power window LH auto up/down signal / ON or OFF ON: Rear power window LH auto up/down switch operated OFF: Rear power window LH switch not operated - RL Door P/W Up SW Rear power window LH manual up signal / ON or OFF ON: Rear power window LH manual up switch operated OFF: Rear power window LH switch not operated - RL Door P/W Down SW Rear power window LH manual down signal / ON or OFF ON: Rear power window LH manual down switch operated OFF: Rear power window LH switch not operated - OK On tester screen, each item changes between ON and OFF according to above chart. NG --> See step 9 OK --> See step 20
9. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH Remove the rear power window regulator switch. Refer to «REMOVAL»(ref-524356-S05478489102013012800000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 2 (UP) - 5 (GND) Manual up operation Below 1 ohms 10 (DOWN) - 5 (GND) Manual down operation Below 1 ohms 4 (AUTO) - 5 (GND) Auto up/down operation Below 1 ohms 2 (UP) - 5 (GND) Not operated 10 kohms or higher 10 (DOWN) - 5 (GND) Not operated 10 kohms or higher 4 (AUTO) - 5 (GND) Not operated 10 kohms or higher NG --> See step 16 OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH) Disconnect the M2 rear power window regulator switch connector. Disconnect the M4 rear power window regulator motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M2-2 (UP) - M4-10 (UP) Always Below 1 ohms M2-10 (DOWN) - M4-7 (DOWN) Always Below 1 ohms M2-4 (AUTO) - M4-4 (AUTO) Always Below 1 ohms M2-2 (UP) - Body ground Always 10 kohms or higher M2-10 (DOWN) - Body ground Always 10 kohms or higher M2-4 (AUTO) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 20
11. READ VALUE USING TECHSTREAM (REAR POWER WINDOW REGULATOR SWITCH RH) Use the Data List to check if the power window regulator motor is functioning properly. RR-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note RR Door P/W Auto SW Rear power window RH auto up/down signal / ON or OFF ON: Rear power window RH auto up/down switch operated OFF: Rear power window RH switch not operated - RR Door P/W Up SW Rear power window RH manual up signal / ON or OFF ON: Rear power window RH manual up switch operated OFF: Rear power window RH switch not operated - RR Door P/W Down SW Rear power window RH manual down signal / ON or OFF ON: Rear power window RH manual down switch operated OFF: Rear power window RH switch not operated - OK On tester screen, each item changes between ON and OFF according to above chart. NG --> See step 12 OK --> See step 21
12. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Remove the rear power window regulator switch. Refer to «REMOVAL»(ref-524356-S05478489102013012800000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 2 (UP) - 5 (GND) Manual up operation Below 1 ohms 10 (DOWN) - 5 (GND) Manual down operation Below 1 ohms 4 (AUTO) - 5 (GND) Auto up/down operation Below 1 ohms 2 (UP) - 5 (GND) Not operated 10 kohms or higher 10 (DOWN) - 5 (GND) Not operated 10 kohms or higher 4 (AUTO) - 5 (GND) Not operated 10 kohms or higher NG --> See step 17 OK: Go to next step
13. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH) Disconnect the L2 rear power window regulator switch connector. Disconnect the L4 rear power window regulator motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L2-2 (UP) - L4-10 (UP) Always Below 1 ohms L2-10 (DOWN) - L4-7 (DOWN) Always Below 1 ohms L2-4 (AUTO) - L4-4 (AUTO) Always Below 1 ohms L2-2 (UP) - Body ground Always 10 kohms or higher L2-10 (DOWN) - Body ground Always 10 kohms or higher L2-4 (AUTO) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 21
14. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-524356-S19553251942013012800000)
15. REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY RH. Refer to «REMOVAL»(ref-524356-S36217979752013012800000)
16. REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH. Refer to «REMOVAL»(ref-524356-S05478489102013012800000)
17. REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH. Refer to «REMOVAL»(ref-524356-S05478489102013012800000)
18. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to «REMOVAL»(ref-524356-S15528468862013012800000)
19. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to «REMOVAL»(ref-524356-S15528468862013012800000)
20. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to «REMOVAL»(ref-524356-S39266463242013012800000)
21. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to «REMOVAL»(ref-524356-S39266463242013012800000)

The power window regulator motor is driven by operating the power window switch. The power window regulator motor assembly has a motor, regulator and ECU.

When the ECU determines that the power window regulator motor has not been initialized, DTC B2313 is stored.

HINT

This DTC may be stored for all the windows.

Note. When a power window regulator motor is reinstalled or replaced, the power window control system must be initialized. After any door glass or a door glass run has been replaced, the jam protection function may operate unexpectedly when the auto up function is used. In such cases, the auto up function can be resumed by repeating the following operation at least 5 times: Close the power window by fully pulling up the power window switch and holding it in the auto up position. Open the power window by fully pushing down the power window switch.

D-DOOR MOTOR

P-DOOR MOTOR

RL-DOOR MOTOR

RR-DOOR MOTOR

When the engine switch is on (IG) and the window lock switch is off, the multiplex network master switch sends remote up/down signals to each power window regulator motor via the LIN communication line.

1. If the manual up/down function does not operate, there may be a malfunction in the multiplex network master switch, power window regulator, harness or connector.

Scheme 131

1. If the manual up/down function does not operate, there may be a malfunction in the power window regulator switch, front power window regulator motor, harness or connector.

Scheme 132

1. If the manual up/down function does not operate, there may be a malfunction in the rear power window regulator switch, rear power window regulator motor, harness or connector.

Scheme 133

1. If the manual up/down function does not operate, there may be a malfunction in the rear power window regulator switch, rear power window regulator motor, harness or connector.

Scheme 134

1. If the auto up/down function does not operate, the cause may be one or more of the following

1. The ECU in the power window regulator motor determines that the power window regulator motor has not been initialized.
2. The master switch has a malfunction.
3. The Hall IC in the front power window regulator motor has a malfunction.

1. If the auto up/down function does not operate, the cause may be one or more of the following

1. The ECU in the power window regulator motor determines that the power window regulator motor has not been initialized.
2. The power window regulator switch has a malfunction.
3. The Hall IC in the power window regulator motor has a malfunction.
4. There is an open or short in the wiring between the power window regulator switch and power window regulator motor.

Scheme 135

Scheme 136

1. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-524122-S21022408872013012800000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-524122-S21022408872013012800000) . RESULT Result Proceed to DTC is not output A DTC B2311 is output B DTC B2312 is output C DTC B2313 is output D B --> See step 10 C --> See step 8 D --> See step 9 A: Go to next step
2. CHECK MANUAL UP/DOWN FUNCTION (POWER WINDOW REGULATOR SWITCH RH) Check that the manual up/down function using the front power window regulator switch can operate the front power window. Refer to «OPERATION CHECK»(ref-524122-S08097623332013012800000) . OK Front passenger side door power window moves. NG --> See step 11 OK: Go to next step
3. READ VALUE USING TECHSTREAM (POWER WINDOW REGULATOR SWITCH RH) Use the Data List to check if the front power window regulator is functioning properly. Refer to «DATA LIST / ACTIVE TEST»(ref-524122-S04183156302013012800000) . P-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note P Door P/W Auto SW Front passenger side power window auto up/down signal / ON or OFF ON: Front passenger side power window auto up/down switch operated OFF: Front passenger side power window regulator switch not operated - OK On tester screen, item changes between ON and OFF according to above chart. NG --> See step 4 OK --> See step 7
4. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Remove the power window regulator switch. Refer to «REMOVAL»(ref-524356-S36217979752013012800000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 4 (AUTO) - 5 (GND) Auto up/down operation Below 1 ohms 4 (AUTO) - 5 (GND) Not operated 10 kohms or higher NG --> See step 6 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH RH - FRONT POWER WINDOW REGULATOR MOTOR RH AND BODY GROUND) Disconnect the J1 power window regulator switch connector. Disconnect the J6 power window regulator motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition J1-4 (AUTO) - J6-4 (AUTO) Always Below 1 ohms J1-5 (GND) - Body ground Always Below 1 ohms J1-4 (AUTO) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
6. REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY RH. Refer to «REMOVAL»(ref-524356-S36217979752013012800000)
7. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to «REMOVAL»(ref-524356-S15528468862013012800000)
8. GO TO DTC B2312. Refer to «DTC B2312: Power Window Switch Malfunction»(ref-524394-S22383748332013012800000)
9. GO TO DTC B2313. Refer to «DTC B2313: Glass Position Initialization Incomplete»(ref-524394-S37727621452013012800000)
10. GO TO DTC B2311. Refer to «DTC B2311: Power Window Motor Malfunction»(ref-524394-S24614866002013012800000)
11. GO TO "Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch". Refer to «Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch»(ref-524394-S14656516502013012800000)

1. If the auto up/down function does not operate, the cause may be one or more of the following

1. The ECU in the power window regulator motor determines that the power window regulator motor has not been initialized.
2. The rear power window regulator switch has a malfunction.
3. The Hall IC in the power window regulator motor has a malfunction.
4. There is an open or short in the wiring between the rear power window regulator switch and rear power window regulator motor.

Scheme 137

1. If the auto up/down function does not operate, the cause may be one or more of the following

1. The ECU in the power window regulator motor determines that the power window regulator motor has not been initialized.
2. The rear power window regulator switch has a malfunction.
3. The Hall IC in the power window regulator motor has a malfunction.
4. There is an open or short in the wiring between the rear power window regulator switch and power window regulator motor.

Scheme 138

1. When a key switch is pushed: 1) the door control receiver receives the key signal; 2) the door control receiver sends a signal to the certification ECU; 3) the main body ECU (multiplex network body ECU) sends the operation permission signal to the power window regulator motors; and 4) the power window regulator motor assemblies are activated.
2. When the driver door key cylinder (key-linked switch) is turned: 1) the door lock motor receives the signal; 2) the main body ECU (multiplex network body ECU) sends the signal to the power window regulator motors; and 3) the power window regulator motor assemblies are activated.

1. When the front doors are closed, each power window regulator motor can control its power window operation for approximately 43 seconds after the engine switch is turned from ON to off by receiving operation permission signals from the main body ECU (instrument panel junction block). However, when approximately 43 seconds have elapsed, or a front side door is opened within approximately 43 seconds of the engine switch being turned off, all the power window regulator motors disable manual operation.

1. During the auto function operation, when 43 seconds have elapsed and key-off operation is prohibited, the window operation stops immediately.

1. The front passenger side power window and the rear power windows cannot be operated when the window lock switch is on.

If any door glass or a power window regulator motor does not operate smoothly, the jam protection function may be triggered automatically, resulting in the auto up function being unable to fully close the window.

HINT

This symptom may occur for any of the windows.

1. This problem may occur in all door windows. The jam protection function operates within a specified range during the manual up or auto up operation.