Power Window Control System (Diagnostic Codes & Symptom Tests): Overview Toyota RAV4 IV

DESCRIPTION

The driver door power window regulator motor is driven by operating the power window regulator master switch. The driver door power window regulator motor has motor, regulator, and ECU functions.

DTC B2311 is output when the driver door power window regulator motor assembly has a malfunction, or the ECU built into the regulator motor assembly determines that the fully closed window position has deviated approximately 20 mm (0.79 in.) or more from the normal position.

Note. The power window control system uses a multiplex communication system (LIN). Inspect the communication function by following HOW TO PROCEED WITH TROUBLESHOOTING. Troubleshoot the power window control system after confirming that the communication system is functioning properly. When the power window regulator motor assembly (on the driver side) is reinstalled or replaced, the power window control system must be initialized. After a 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 switch.

The driver door power window regulator motor is driven by operating the power window regulator master switch. The driver door power window regulator motor has motor, regulator, and ECU functions.

When the ECU determines that the power window regulator master switch is stuck, DTC B2312 is set.

Note. The power window control system uses a multiplex communication system (LIN). Inspect the communication function by following HOW TO PROCEED WITH TROUBLESHOOTING. Troubleshoot the power window control system after confirming that the communication system is functioning properly. When the power window regulator motor assembly (on the driver side) is reinstalled or replaced, the power window control system must be initialized. After a 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 switch.

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1. READ VALUE USING TECHSTREAM (MASTER SWITCH) Using the Data List to check the function of the power window master switch. D-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door P/W Auto SW Driver side power window AUTO switch signal / ON or OFF ON: Driver side power window AUTO switch operates OFF: Driver side power window AUTO switch does not operate - D Door P/W Up SW Driver side power window UP switch signal / ON or OFF ON: Driver side power window UP switch operates OFF: Driver side power window UP switch does not operate - D Door P/W Down SW Driver side power window DOWN switch signal / ON or OFF ON: Driver side power window DOWN switch operates OFF: Driver side power window DOWN switch does not operate - OK ON (switch operates) appears on screen. HINT: When the power window operates normally, the problem has been caused by irregular switch operation (for example, the power window regulator master switch was held in the same position for more than 20 seconds). OK --> REPLACE POWER WINDOW REGULATOR MOTOR (for Driver Side) NG: Go to next step
2. CHECK WIRE HARNESS (SWITCH INPUT POWER SUPPLY) Disconnect the H2 switch connector. Measure the voltage of the wire harness and connector. Standard voltage Tester Connection Specified Condition H2-6 (B) - H2-1 (E) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
3. CHECK WIRE HARNESS (MASTER SWITCH - REGULATOR MOTOR) Disconnect the H2 switch connector. Disconnect the H4 motor connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition H2-8 (U) - H4-10 (UP) Below 1 ohms H2-5 (D) - H4-7 (DOWN) Below 1 ohms H2-4 (A) - H4-4 (AUTO) Below 1 ohms H2-3 (LED) - H4-5 (LED) Below 1 ohms NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
4. REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Temporarily replace the power window regulator master switch with a new or normally functioning one. Check for DTC. OK DTC is not output. NG --> REPLACE POWER WINDOW REGULATOR MOTOR (for Driver Side) OK --> END

The driver door power window regulator motor is driven by operating the power window regulator master switch. The driver door power window regulator motor has motor, regulator, and ECU functions.

When the ECU determines that the driver door power window regulator motor assembly has not been initialized, DTC B2313 is set.

Note. The power window control system uses a multiplex communication system (LIN). Inspect the communication function by following HOW TO PROCEED WITH TROUBLESHOOTING. Troubleshoot the power window control system after confirming that the communication system is functioning properly. When the power window regulator motor assembly (on the driver side) is reinstalled or replaced, the power window control system must be initialized. After a 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 switch.

DTC B2321 is output when the communication between the power window regulator motor (driver side) and main body ECU stops for more than 10 seconds.

Note. When using Techstream to troubleshoot the LIN communication line: Connect Techstream to the vehicle, and turn a courtesy light switch on and off at 1.5 second intervals until communication between the tester and vehicle begins.

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1. CHECK WHETHER DTC OUTPUT RECURS (DTC B2321) Connect Techstream to the DLC3. Turn the ignition switch ON and turn the tester on. Clear the DTCs. Recheck the DTCs. RESULT Display (DTC Output) Proceed to B2321 A No DTC output B B --> SYSTEM IS OK A: Go to next step
2. READ VALUE USING TECHSTREAM (COMMUNICATION D DOOR MOTOR) Connect Techstream to the DLC3. Turn the ignition switch ON and turn the tester on. Read the indication displayed on the tester. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Communication D-Door Motor Connection status between power window regulator motor assembly (driver door) and main body ECU / OK or Stop OK: Connection Stop: No connection - OK OK is displayed on Techstream screen. OK --> REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) NG: Go to next step
3. CHECK WIRE HARNESS (MAIN BODY ECU - REGULATOR MOTOR) Disconnect the H4 motor connector. Disconnect the E15 junction block connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition H4-9 (LIN) - E15-23 (LIN2) Below 1 ohms H4-9 (LIN) or E15-23 (LIN2) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS (DTC B2321) Connect Techstream to the DLC3. Turn the ignition switch ON and turn the tester on. Clear the DTCs. Check whether DTC B2321 recurs 10 seconds or more after the ignition switch is turned ON. OK No DTC is output. NG --> REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side) OK --> REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)

DTC B2325 is output when the LIN communication line is abnormal inside the instrument panel junction block (main body ECU).

With the ignition switch ON, the power window regulator master switch transmits remote switch signals to the regulator switches of the passenger door power window and rear door power windows. Then, each regulator switch drives its respective power window regulator motor.

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1. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Turn the window lock switch OFF and operate the switches on the master switch. Check that the remote UP / DOWN function operates normally. OK Remote UP / DOWN function operates normally. OK --> END NG: Go to next step
2. CHECK MANUAL UP / DOWN FUNCTION Check that the passenger door power window and rear door power window manual UP / DOWN function operates normally. OK Manual UP / DOWN function operates normally. NG --> OTHER PROBLEM OK --> REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

1. When the engine is running or the ignition switch is ON, the driver door power window regulator motor is driven by operating the power window regulator master switch. The driver door power window regulator motor has motor, regulator, and ECU functions. NOTE: The power window control system uses a multiplex communication system (LIN). Inspect the communication function by following HOW TO PROCEED WITH TROUBLESHOOTING. Troubleshoot the power window control system after confirming that the communication system is functioning properly. When the power window regulator motor assembly (on the driver side) is reinstalled or replaced, the power window control system must be initialized. After a 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 at the AUTO UP position. Open the power window by fully pushing down the switch. When the ECU determines that the driver door power window regulator motor has a malfunction, DTC B2311 is set. HINT: If the pulse sensor built into the power window regulator motor (on the driver side) malfunctions, the power window control system enters fail-safe mode. The remote UP / DOWN and AUTO UP / DOWN functions cannot be operated during fail-safe mode. (However, the power window can be closed by holding the power window switch in the AUTO UP position, and opened manually by pushing down the switch.)

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1. CHECK DTC Check for DTCs. Connect Techstream to the DLC3. By following the tester screen display, check whether any DTCs are output. RESULT Display Proceed to No output A DTC output B B --> GO TO DIAGNOSTIC TROUBLE CODE CHART A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (POWER WINDOW UP/DOWN) Perform the Active Test, using Techstream to generate a control command, and then check the power window operation. D-DOOR MOTOR Tester Display Test Part Control Range Diagnostic Note P/W Up / Down Power Window UP / OFF - P/W Up / Down Power Window DOWN / OFF - OK Driver side power window operates normally. WARNING: Be careful to avoid injuries as this test causes vehicle parts to move. NG --> See step 6 OK: Go to next step
3. READ VALUE USING TECHSTREAM (MASTER SWITCH) Check the Data list for proper functioning of the power window master switch. D-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door P/W Auto SW Driver side power window AUTO switch signal / ON or OFF ON: Driver side power window AUTO switch operates OFF: Driver side power window AUTO switch does not operate - D Door P/W Up SW Driver side power window UP switch signal / ON or OFF ON: Driver side power window UP switch operates OFF: Driver side power window UP switch does not operate - D Door P/W Down SW Driver side power window DOWN switch signal / ON or OFF ON: Driver side power window DOWN switch operates OFF: Driver side power window DOWN switch does not operate - OK ON (switch operates) appears on screen. OK --> REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side) NG: Go to next step
4. CHECK WIRE HARNESS (SWITCH INPUT POWER SUPPLY) Disconnect the H2 switch connector. Turn the ignition switch ON. Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Specified Condition H2-6 (B) - H2-1 (E) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
5. CHECK WIRE HARNESS (MASTER SWITCH - REGULATOR MOTOR) Disconnect the H2 switch connector. Disconnect the H4 motor connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition H2-8 (U) - H4-10 (UP) Below 1 ohms H2-5 (D) - H4-7 (DOWN) Below 1 ohms H2-4 (A) - H4-4 (AUTO) Below 1 ohms H2-3 (LED) - H4-5 (LED) Below 1 ohms NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK --> REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
6. INSPECT FUSE (D FR DOOR) Remove the D FR DOOR fuse from the instrument panel junction block. Standard resistance Below 1 ohms NG --> REPLACE FUSE (D FR DOOR) OK: Go to next step
7. CHECK WIRE HARNESS (MOTOR INPUT POWER SUPPLY) Disconnect the H4 motor connector. Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Specified Condition H4-2 (B) - H4-1 (GND) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK --> REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side)

1. When the engine is running or the ignition switch is ON and the window lock switch of the power window regulator master switch is normal, the front passenger door power window regulator motor is driven by operating the front passenger door power window regulator switch.

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1. CHECK WIRE HARNESS (INPUT POWER SUPPLY) Disconnect the G3 switch connector. Turn the ignition switch ON. Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition G3-3 (B) - Body ground Ignition switch ON 10 to 14 V NG --> INSPECT FUSE AND REPLACE IT IF NECESSARY, OR INSPECT AND REPAIR WIRE HARNESS AND CONNECTOR OK: Go to next step
2. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Front Passenger Side) Remove the power window regulator switch. Measure the resistance of the switch when the switch is operated. Standard resistance Tester Connection Switch Condition Specified Condition 1 (D) - 2 (SD) 3 (B) - 4 (U) UP Below 1 ohms 4 (U) - 5 (SU) 1 (D) - 2 (SD) OFF Below 1 ohms 1 (D) - 3 (B) 4 (U) - 5 (SU) DOWN Below 1 ohms NG --> REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Front Passenger Side) OK: Go to next step
3. CHECK WIRE HARNESS (REGULATOR SWITCH - REGULATOR MOTOR) Disconnect the G3 switch connector. Disconnect the G2 motor connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition G3-4 (U) - G2-2 (U) Below 1 ohms G3-1 (D) - G2-1 (D) Below 1 ohms G3-4 (U) or G2-2 (U) - Body ground 10 kohms or higher G3-1 (D) or G2-1 (D) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
4. INSPECT POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Front Passenger Side) Remove the power window regulator motor. Apply the battery voltage to connector terminals 1 and 2. NOTE: Do not apply the battery voltage to any terminals except terminals 1 and 2. Check that the motor gear rotates smoothly as follows. OK Measurement Condition Specified Condition Battery positive (+) --> 1 Battery negative (-) --> 2 Motor gear rotates clockwise Battery positive (+) --> 2 Battery negative (-) --> 1 Motor gear rotates counterclockwise NG --> REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Front Passenger Side) OK: Go to next step
5. CHECK WIRE HARNESS (MASTER SWITCH - REGULATOR SWITCH) Disconnect the H2 switch connector. Disconnect the G3 switch connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition H2-16 (U) - G3-5 (SU) Below 1ohms H2-15 (D) - G3-2 (SD) Below 1ohms H2-16 (U) or G3-5 (SU) - Body ground 10 kohms or higher H2-15 (D) or G3-2 (SD) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK --> REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

If the rear LH side manual UP / DOWN function does not operate, a malfunction may exist in the power window regulator motor, power window regulator switch, power window regulator master switch or wire harness.

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1. INSPECT FUSE (RL DOOR) Remove the RL DOOR fuse from the instrument panel junction block. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE (RL DOOR) OK: Go to next step
2. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear LH) (POWER SOURCE) Disconnect the J1 switch connector. Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition J1-3 (B) - Body ground Ignition switch ON 10 to 14 V NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
3. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear LH) Remove the power window regulator switch. Measure the resistance of the switch when the switch is operated. Standard resistance Tester Connection Switch Condition Specified Condition 1 (D) - 2 (SD) 3 (B) - 4 (U) UP Below 1 ohms 4 (U) - 5 (SU) 1 (D) - 2 (SD) OFF Below 1 ohms 1 (D) - 3 (B) 4 (U) - 5 (SU) DOWN Below 1 ohms NG --> REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear LH) OK: Go to next step
4. CHECK WIRE HARNESS (REGULATOR SWITCH - REGULATOR MOTOR) Disconnect the J1 switch connector. Disconnect the J3 motor connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition J1-4 (U) - J3-1 (U) Below 1 ohms J1-1 (D) - J3-2 (D) Below 1 ohms J1-4 (U) or J3-1 (U) - Body ground 10 kohms or higher J1-1 (D) or J3-2 (D) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
5. INSPECT POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH) Remove the power window regulator motor. Apply the battery voltage to connector terminals 1 and 2. Check that the motor gear rotates smoothly as follows. OK Measurement Condition Specified Condition Battery positive (+) --> 1 Battery negative (-) --> 2 Motor gear rotates clockwise Battery positive (+) --> 2 Battery negative (-) --> 1 Motor gear rotates counterclockwise NG --> REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH) OK: Go to next step
6. CHECK WIRE HARNESS (REGULATOR MASTER SWITCH - REGULATOR SWITCH) Disconnect the H2 switch connector. Disconnect the J1 switch connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition H2-12 (U) - J1-5 (SU) Below 1 ohms H2-13 (D) - J1-2 (SD) Below 1 ohms H2-12 (U) or J1-5 (SU) - Body ground 10 kohms or higher H2-13 (D) or J1-2 (SD) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK --> REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

If the rear RH side manual UP / DOWN function does not operate, a malfunction may be present in the power window regulator motor, power window regulator switch, power window regulator master switch or wire harness.

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1. INSPECT FUSE (RR DOOR) Remove the RR DOOR fuse from the instrument panel junction block. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE (RR DOOR) OK: Go to next step
2. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear RH) (POWER SOURCE) Disconnect the I1 switch connector. Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition I1-3 (B) - Body ground Ignition switch ON 10 to 14 V NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
3. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear RH) Remove the power window regulator switch. Measure the resistance of the switch when the switch is operated. Standard resistance Tester Connection Switch Condition Specified Condition 1 (D) - 2 (SD) 3 (B) - 4 (U) UP Below 1 ohms 1 (D) - 2 (SD) 4 (U) - 5 (SU) OFF Below 1 ohms 1 (D) - 3 (B) 4 (U) - 5 (SU) DOWN Below 1 ohms NG --> REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear RH) OK: Go to next step
4. CHECK WIRE HARNESS (REGULATOR SWITCH - REGULATOR MOTOR) Disconnect the I1 switch connector. Disconnect the I3 motor connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition I1-4 (U) - I3-1 (U) Below 1 ohms I1-1 (D) - I3-2 (D) Below 1 ohms I1-4 (U) or I3-1 (U) - Body ground 10 kohms or higher I1-1 (D) or I3-2 (D) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK: Go to next step
5. INSPECT POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear RH) Remove the power window regulator motor. Apply the battery voltage to connector terminals 1 and 2. Check that the motor gear rotates smoothly as follows. OK Measurement Condition Specified Condition Battery positive (+) --> 1 Battery negative (-) --> 2 Motor gear rotates counterclockwise Battery positive (+) --> 2 Battery negative (-) --> 1 Motor gear rotates clockwise NG --> REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear RH) OK: Go to next step
6. CHECK WIRE HARNESS (MASTER SWITCH - REGULATOR SWITCH) Disconnect the H2 switch connector. Disconnect the I1 switch connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition H2-10 (U) - I1-5 (SU) Below 1 ohms H2-18 (D) - I1-2 (SD) Below 1 ohms H2-10 (U) or I1-5 (SU) - Body ground 10 kohms or higher H2-18 (D) or I1-2 (SD) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK --> REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

1. When the AUTO UP / DOWN does not function, the power window control system may be in fail-safe mode. If the system has not been initialized after replacement of the driver door power window regulator motor, it also results in the same problem. NOTE: The power window control system uses a multiplex communication system (LIN). Inspect the communication function by following HOW TO PROCEED WITH TROUBLESHOOTING. Troubleshoot the power window control system after confirming that the communication system is functioning properly. When the power window regulator motor assembly (on the driver side) is reinstalled or replaced, the power window control system must be initialized. After a 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 switch. HINT: If the pulse sensor built into the power window regulator motor assembly (on the driver side) malfunctions, the power window control system enters fail-safe mode. The remote UP / DOWN and AUTO UP / DOWN functions cannot be operated during fail-safe mode. (However, the power window can be closed by holding the power window switch at the AUTO UP position, and opened manually by pushing down the switch.)

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1. CHECK DTC Check for DTCs. Connect Techstream to the DLC3. By following the tester screen display, check whether any DTCs are output. RESULT Display Proceed to No output A DTC output B B --> PROCEED TO INSPECTION PROCEDURE RELEVANT TO OUTPUT DTC A: Go to next step
2. READ VALUE USING TECHSTREAM (MASTER SWITCH) Use the Data List to check the function of the power window master switch. D-DOOR MOTOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door P/W Auto SW Driver side power window AUTO switch signal / ON or OFF ON: Driver side power window AUTO switch operates OFF: Driver side power window AUTO switch does not operate - D Door P/W Up SW Driver side power window UP switch signal / ON or OFF ON: Driver side power window UP switch operates OFF: Driver side power window UP switch does not operate - D Door P/W Down SW Driver side power window DOWN switch signal / ON or OFF ON: Driver side power window DOWN switch operates OFF: Driver side power window DOWN switch does not operate - OK ON (switch operates) appears on screen. OK --> REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side) NG: Go to next step
3. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Remove the power window regulator master switch assembly Measure the resistance of the master switch Standard resistance Tester Connection Switch Condition Specified Condition 8 (U) - 1 (E) - 4 (A) Auto UP Below 1 ohms 4 (A) - 5 (D) - 1 (E) Auto Down Below 1 ohms NG --> REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY OK: Go to next step
4. INSPECT FUSE (D FR DOOR) Remove the D FR DOOR fuse from the instrument panel junction block. Standard resistance Below 1 ohms NG --> REPLACE FUSE (D FR DOOR) OK: Go to next step
5. CHECK WIRE HARNESS (MASTER SWITCH - REGULATOR MOTOR) Disconnect the H2 switch connector. Disconnect the H4 motor connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition H2-4 (A) - H4-4 (AUTO) Below 1 ohms NG --> REPAIR OR REPLACE HARNESS AND CONNECTOR OK --> REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side)

1. When the driver door has not been opened and fully closed, each door power window regulator motor can control its power window operation for approximately 45 seconds after the ignition switch is turned from ON to OFF (the key is removed) by receiving operation permission signals from the main body ECU. However, when approximately 45 seconds have elapsed, or the driver door or front passenger side door is opened within approximately 45 seconds of the ignition switch being turned OFF (the key is removed), the power window regulator motor stops operating. NOTE: The power window control system uses a multiplex communication system (LIN). Inspect the communication function by following HOW TO PROCEED WITH TROUBLESHOOTING. Troubleshoot the power window control system after confirming that the communication system is functioning properly. The power window control system prohibits the AUTO UP / DOWN function when the jam protection function malfunctions. Therefore, troubleshoot the power window control system after confirming that no diagnostic codes are displayed.

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The driver door power window regulator motor is activated by operating the power window regulator master switch. The driver door power window regulator motor has motor, regulator and ECU functions. DTC B2311 is set when the main body ECU determines that the driver door power window regulator motor malfunctions.

HINT

If the pulse sensor in the power window regulator motor assembly (on the driver side) malfunctions, the power window control system enters fail-safe mode. The remote UP / DOWN and AUTO UP / DOWN functions cannot be operated during fail-safe mode. (However, the power window can be closed by holding the power window switch at the AUTO UP position, and opened manually by pushing down the switch.)