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

Windows 12 illustrations ~3472 words

INSPECTION PROCEDURE

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 reinitialized by repeating the following operations at least 5 times: Close the power window by fully pulling up the multiplex network master switch or power window regulator switch and holding it in the auto up position. Open the power window by fully pushing down the switch.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

Scheme 139

Scheme 139: PROCEDURE
Scheme 139: PROCEDURE

Scheme 140

Scheme 140
Scheme 140

Scheme 141

Scheme 141
Scheme 141

Scheme 142

Scheme 142
Scheme 142

Scheme 143

Scheme 143
Scheme 143
  1. CHECK FOR DTC (B2312) Check if DTC B2312 is output. Refer to «DTC B2312: Power Window Switch Malfunction»(ref-524394-S22383748332013012800000) . OK DTC B2312 is not output. NG --> See step 9 OK: Go to next step
  2. READ VALUE USING TECHSTREAM (MULTIPLEX NETWORK MASTER SWITCH) Use the Data List to check if the multiplex network master switch 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: Go to next step
  3. PERFORM ACTIVE TEST USING TECHSTREAM (POWER WINDOW) Select the Active Test, use the Techstream to generate a control command, and then check that power window regulator motor operates. Refer to «DATA LIST / ACTIVE TEST»(ref-524122-S04183156302013012800000) . D-DOOR MOTOR Tester Display Test Part Control Range Diagnostic Note Power Window Passenger side power window OFF/UP/DOWN - OK The power window regulator motor operates normally. NG --> See step 11 OK --> See step 12
  4. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - BATTERY AND BODY GROUND) Disconnect the K3 multiplex network master switch connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition K3-11 (B) - Body ground Always 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition K3-12 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Multiplex Network Master Switch Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH - BATTERY AND BODY GROUND) Disconnect the K6 power window regulator motor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition K6-2 (B) - Body ground Always 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition K6-1 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Front Power Window Regulator Motor Assembly LH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - 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: Go to next step
  7. INSPECT FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Remove the front power window regulator motor LH. Refer to «REMOVAL»(ref-524356-S15528468862013012800000) . Check that the window regulator motor moves smoothly as follows. NOTE: Do not apply positive (+) battery voltage to any terminal other than terminal 2 (B) to avoid damaging the pulse sensor inside the motor. Reset the power window regulator motor (initialize the pulse sensor) after installing the power window regulator motor to the door. OK Measurement Condition Specified Condition Connect the positive (+) battery terminal to terminal 2 (B), and connect the negative (-) battery terminal to terminal 1 (GND), and keep them connected for 3 seconds or more. With terminals 2 (B) and 1 (GND) connected to the battery, connect the negative (-) battery terminal to terminal 10 (UP). Disconnect and reconnect the negative (-) battery terminal to terminal 10 (UP) within 1 second. Motor gear rotates clockwise (Up) Connect the positive (+) battery terminal to terminal 2 (B), and connect the negative (-) battery terminal to terminal 1 (GND), and keep them connected for 3 seconds or more. With terminals 2 (B) and 1 (GND) connected to the battery, connect the negative (-) battery terminal to terminal 7 (DOWN). Disconnect and reconnect the negative (-) battery terminal to terminal 7 (DOWN) within 1 second. Motor gear rotates counterclockwise (Down) TEXT IN ILLUSTRATION *1 Motor Gear Clockwise Counterclockwise NG --> See step 10 OK --> See step 8
  8. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-524356-S19553251942013012800000)
  9. GO TO DTC B2312. Refer to «DTC B2312: Power Window Switch Malfunction»(ref-524394-S22383748332013012800000)
  10. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to «REMOVAL»(ref-524356-S15528468862013012800000)
  11. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to «REMOVAL»(ref-524356-S15528468862013012800000)
  12. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «DATA LIST / ACTIVE TEST»(ref-524122-S04183156302013012800000)

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

Scheme 144

Scheme 144: PROCEDURE
Scheme 144: PROCEDURE

Scheme 145

Scheme 145
Scheme 145

Scheme 146

Scheme 146
Scheme 146
  1. CHECK FOR DTC (B2312) Check if DTC B2312 is output. Refer to «DTC B2312: Power Window Switch Malfunction»(ref-524394-S22383748332013012800000) . OK DTC B2312 is not output. NG --> See step 9 OK: Go to next step
  2. READ VALUE USING TECHSTREAM (POWER WINDOW REGULATOR SWITCH RH) Use the Data List to check if the front 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 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 4 OK: Go to next step
  3. PERFORM ACTIVE TEST USING TECHSTREAM (POWER WINDOW) Select the Active Test, use the Techstream to generate a control command, and then check that power window regulator motor operates. Refer to «DATA LIST / ACTIVE TEST»(ref-524122-S04183156302013012800000) . P-DOOR MOTOR Tester Display Test Part Control Range Diagnostic Note Power Window Passenger side power window OFF/UP/DOWN - OK The power window regulator motor operates normally. NG --> See step 8 OK --> See step 11
  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 2 (UP) - 5 (GND) Manual up operation Below 1 ohms 10 (DOWN) - 5 (GND) Manual 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 NG --> See step 10 OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH ASSEMBLY RH - BODY GROUND) Disconnect the J1 power window regulator switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition J1-5 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Power Window Regulator Switch Assembly RH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. 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 J1-2 (UP) - Body ground Always 10 kohms or higher J1-10 (DOWN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH - BATTERY AND BODY GROUND) Disconnect the J6 power window regulator motor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition J6-2 (B) - Body ground Always 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition J6-1 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Front Power Window Regulator Motor Assembly RH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  8. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to «REMOVAL»(ref-524356-S15528468862013012800000)
  9. GO TO DTC B2312. Refer to «DTC B2312: Power Window Switch Malfunction»(ref-524394-S22383748332013012800000)
  10. REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY RH. Refer to «REMOVAL»(ref-524356-S36217979752013012800000)
  11. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(ref-524305-S41918141882013012800000)

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

Scheme 147

Scheme 147
Scheme 147

Scheme 148

Scheme 148
Scheme 148
  1. CHECK FOR DTC (B2312) Check if DTC B2312 is output. Refer to «DTC B2312: Power Window Switch Malfunction»(ref-524394-S22383748332013012800000) . OK DTC B2312 is not output. NG --> See step 9 OK: Go to next step
  2. READ VALUE USING TECHSTREAM (REAR POWER WINDOW REGULATOR SWITCH LH) Use the Data List to check if the rear power window regulator 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 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 4 OK: Go to next step
  3. PERFORM ACTIVE TEST USING TECHSTREAM (POWER WINDOW) Select the Active Test, use the Techstream to generate a control command, and then check that power window regulator motor operates. Refer to «DATA LIST / ACTIVE TEST»(ref-524122-S04183156302013012800000) . RL-DOOR MOTOR Tester Display Test Part Control Range Diagnostic Note Power Window Passenger side power window OFF/UP/DOWN - OK The power window regulator motor operates normally. NG --> See step 8 OK --> See step 11
  4. 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 2 (UP) - 5 (GND) Not operated 10 kohms or higher 10 (DOWN) - 5 (GND) Not operated 10 kohms or higher NG --> See step 10 OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH - BODY GROUND) Disconnect the M2 rear power window regulator switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M2-5 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Rear Power Window Regulator Switch Assembly LH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. 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 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 M2-2 (UP) - Body ground Always 10 kohms or higher M2-10 (DOWN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH - BATTERY AND BODY GROUND) Disconnect the M4 power window regulator motor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition M4-2 (B) - Body ground Always 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M4-1 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Rear Power Window Regulator Motor Assembly LH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  8. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to «REMOVAL»(ref-524356-S39266463242013012800000)
  9. GO TO DTC B2312. Refer to «DTC B2312: Power Window Switch Malfunction»(ref-524394-S22383748332013012800000)
  10. REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH. Refer to «REMOVAL»(ref-524356-S05478489102013012800000)
  11. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(ref-524305-S41918141882013012800000)

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

Scheme 149

Scheme 149
Scheme 149

Scheme 150

Scheme 150
Scheme 150
  1. CHECK FOR DTC (B2312) Check if DTC B2312 is output. Refer to «DTC B2312: Power Window Switch Malfunction»(ref-524394-S22383748332013012800000) . OK DTC B2312 is not output. NG --> See step 9 OK: Go to next step
  2. READ VALUE USING TECHSTREAM (REAR POWER WINDOW REGULATOR SWITCH RH) Use the Data List to check if the rear power window regulator motor is functioning properly. Refer to «DATA LIST / ACTIVE TEST»(ref-524122-S04183156302013012800000) . RR-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note 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 4 OK: Go to next step
  3. PERFORM ACTIVE TEST USING TECHSTREAM (POWER WINDOW) Select the Active Test, use the Techstream to generate a control command, and then check that power window regulator motor operates. Refer to «DATA LIST / ACTIVE TEST»(ref-524122-S04183156302013012800000) . RR-DOOR MOTOR Tester Display Test Part Control Range Diagnostic Note Power Window Passenger side power window OFF/UP/DOWN - OK The power window regulator motor operates normally. NG --> See step 8 OK --> See step 11
  4. 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 2 (UP) - 5 (GND) Not operated 10 kohms or higher 10 (DOWN) - 5 (GND) Not operated 10 kohms or higher NG --> See step 10 OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH - BODY GROUND) Disconnect the L2 rear power window regulator switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L2-5 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Rear Power Window Regulator Switch Assembly RH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. 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 L2-2 (UP) - Body ground Always 10 kohms or higher L2-10 (DOWN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH - BATTERY AND BODY GROUND) Disconnect the L4 rear power window regulator motor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition L4-2 (B) - Body ground Always 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L4-1 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Rear Power Window Regulator Motor Assembly RH) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  8. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to «REMOVAL»(ref-524356-S39266463242013012800000)
  9. GO TO DTC B2312. Refer to «DTC B2312: Power Window Switch Malfunction»(ref-524394-S22383748332013012800000)
  10. REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH. Refer to «REMOVAL»(ref-524356-S05478489102013012800000)
  11. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(ref-524305-S41918141882013012800000)

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

HINT

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

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 reinitialized by repeating the following operations at least 5 times: Close the power window by fully pulling up the multiplex network master switch or power window regulator switch and holding it at the auto up position. Open the power window by fully pushing down the multiplex network master switch or power window regulator switch.

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