Power Window Control System (Diagnostics & Symptom Tests): Diagnosis Scion tC II

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use these procedures to troubleshoot the power window control system.
2. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. INSPECT BATTERY VOLTAGE Standard voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding. NEXT: Go to next step
3. PROBLEM SYMPTOMS TABLE RESULT Result Proceed to Fault is not listed in problem symptoms table A Fault is listed in problem symptoms table B B --> Go to step 5 A: Go to next step
4. OVERALL ANALYSIS AND TROUBLESHOOTING* Terminals of ECU. Refer to «TERMINALS OF ECU»(ref-451272-S37101329072012020700000) Operation Check. Refer to «OPERATION CHECK»(ref-451272-S19754818702012020700000) Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(ref-451272-S21435139512012020700000) NEXT: Go to next step
5. REPAIR OR REPLACE NEXT: Go to next step
6. CONFIRMATION TEST NEXT --> END

Scheme 85

1. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (WINDOW LOCK SWITCH) Check that the passenger side power window cannot be operated when the window lock switch of the power window regulator master switch is pressed. OK Passenger side power window operation is disabled. Check that the passenger side power window can be operated when the window lock switch is pressed again. OK Passenger side power window can be operated.
2. CHECK MANUAL UP/DOWN FUNCTION Check that the driver side power window operates as follows: OK Condition Master Switch Switch Operation Power Window Ignition switch ON Driver side Pulled up UP (Closes) Pushed halfway down DOWN (Opens) Check that the passenger side power window operates as follows: OK Condition Regulator Switch Switch Operation Power Window Ignition switch ON Window lock switch off Passenger side Pulled up UP (Closes) Pushed down DOWN (Opens)
3. CHECK AUTO DOWN FUNCTION Check that the driver side power window operates as follows: OK Condition Master Switch Switch Operation Power Window Ignition switch ON Driver side Fully pushed down AUTO DOWN (Fully opens)
4. CHECK REMOTE MANUAL UP/DOWN FUNCTION Check that the passenger side power window operates as follows: OK Condition Master Switch Switch Operation Power Window Ignition switch ON Window lock switch off Passenger side Pulled up UP (Closes) Pushed down DOWN (Opens)
5. CHECK POWER WINDOW OPERATION FUNCTION AFTER IGNITION SWITCH IS TURNED OFF (DRIVER DOOR POWER WINDOW) Check that all the power windows can be operated with the power window regulator master switch after the ignition switch has been turned off. Check that the key-off operation function does not operate after the driver, passenger is closed and opened. Check that the driver side and passenger side door power windows cannot be operated after more than approximately 43 seconds have elapsed after the ignition switch is turned off.

PROBLEM SYMPTOMS TABLE

HINT

1. Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.

POWER WINDOW CONTROL SYSTEM

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1. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Disconnect the E1 power window regulator master switch assembly connector. Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E1-15 (B) - Body ground L - Body ground Ignition power supply Ignition switch off Below 1 V E1-15 (B) - Body ground L - Body ground Ignition power supply Ignition switch ON 11 to 14 V E1-7 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the E1 power window regulator master switch assembly connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E1-10 (U) - E1-7 (E) B - W-B Power window motor UP output (driver side) Ignition switch ON, driver side power window regulator switch off --> UP (manual operation) Below 1 V --> 11 to 14 V E1-12 (D) - E1-7 (E) W - W-B Power window motor DOWN output (driver side) Ignition switch ON, driver side power window regulator switch off --> DOWN (manual operation) Below 1 V --> 11 to 14 V E1-12 (D) - E1-7 (E) W - W-B Power window motor DOWN output (driver side) Ignition switch ON, driver side power window fully closed --> driver side power window regulator switch DOWN (AUTO operation) --> driver side power window fully open Below 1 V --> 11 to 14 V --> Below 1 V E1-16 (U) - E1-7 (E) G - W-B Power window motor UP output (passenger side) Ignition switch ON, passenger side power window regulator switch off --> UP Below 1 V --> 11 to 14 V E1-18 (D) - E1-7 (E) V - W-B Power window motor DOWN output (passenger side) Ignition switch ON, passenger side power window regulator switch off --> DOWN Below 1 V --> 11 to 14 V If the result is not as specified, the power window regulator master switch may have a malfunction. Check the AUTO light illumination. After turning the ignition switch to ON, check that the AUTO light illuminates (orange).
2. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY Disconnect the D1 power window regulator switch assembly connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition D1-3 (B) - Body ground P - Body ground Ignition power supply Ignition switch off Below 1 V D1-3 (B) - Body ground P - Body ground Ignition power supply Ignition switch ON 11 to 14 V D1-2 (SD) - Body ground V - Body ground Power window motor DOWN input (Remote) Ignition switch ON, power window regulator master switch off --> DOWN (Remote) Below 1 V --> 11 to 14 V D1-5 (SU) - Body ground G - Body ground Power window motor UP input (Remote) Ignition switch ON, power window regulator master switch off --> UP (Remote) Below 1 V --> 11 to 14 V If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the D1 power window regulator switch assembly connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition D1-1 (D) - Body ground W - Body ground Power window motor DOWN output Ignition switch ON, power window regulator master switch off --> DOWN Below 1 V --> 11 to 14 V D1-4 (U) - Body ground B - Body ground Power window motor UP output Ignition switch ON, power window regulator master switch off --> UP Below 1 V --> 11 to 14 V If the result is not as specified, the power window regulator switch may have a malfunction.

DATA LIST / ACTIVE TEST

1. DATA LIST HINT: Using the Techstream to read the Data List allows values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Data List. According to the display on the Techstream, read the "Data List". MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note FR Door Courtesy Passenger side door courtesy light switch signal / ON or OFF ON: Passenger door closed OFF: Passenger door open - FL Door Courtesy Driver side door courtesy light switch signal / ON or OFF ON: Driver door closed OFF: Driver door open
2. ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Active Test. According to the display on the Techstream, perform the "Active Test". MAIN BODY Tester Display Test Part Control Range Diagnostic Note IG OFF P/W Control Permission Output Power window control permission output ON or OFF

INSPECTION PROCEDURE

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

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Scheme 91

Scheme 92

1. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY - BATTERY AND BODY GROUND) Disconnect the E1 power window regulator master switch assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E1-15 (B) - Body ground Ignition switch ON 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E1-7 (E) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Power Window Regulator Master Switch Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Remove the power window regulator master switch assembly. Refer to «REMOVAL»(ref-451234-S23518341842012020700000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 10 (U) - 15 (B) UP Below 1 ohms 7 (E) - 12 (D) 12 (D) - 15 (B) DOWN 7 (E) - 10 (U) 12 (D) - 15 (B) AUTO DOWN 7 (E) - 10 (U) NG --> See step 6 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY LH) Disconnect the E1 power window regulator master switch assembly connector. Disconnect the E2 power window regulator motor assembly LH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E1-12 (D) - E2-1 Always Below 1 ohms E1-10 (U) - E2-2 Always Below 1 ohms E1-12 (D) or E2-1 - Body ground Always 10 kohms or higher E1-10 (U) or E2-2 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Remove the power window regulator motor assembly LH. Refer to «REMOVAL»(ref-451234-S12630486052012020700000) . Apply battery voltage to connector terminals 1 and 2. Check that the window regulator motor moves 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 TEXT IN ILLUSTRATION *1 Motor Gear Clockwise Counterclockwise NG --> See step 7 OK --> See step 5
5. REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-451234-S23518341842012020700000)
6. REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-451234-S23518341842012020700000)
7. REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to «REMOVAL»(ref-451234-S12630486052012020700000)

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

Scheme 93

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Scheme 95

1. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH ASSEMBLY - BATTERY) Disconnect the D1 power window regulator switch assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition D1-3 (B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Power Window Regulator Switch) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY Remove the power window regulator switch assembly. Refer to «REMOVAL»(ref-451234-S23518341842012020700000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 4 (U) - 3 (B) UP Below 1 ohms 1 (D) - 2 (SD) 4 (U) - 5 (SU) OFF 1 (D) - 2 (SD) 4 (U) - 5 (SU) DOWN 1 (D) - 3 (B) NG --> See step 7 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY RH) Disconnect the D1 power window regulator switch assembly connector. Disconnect the D2 power window regulator motor assembly RH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D1-1 (D) - D2-1 Always Below 1 ohms D1-4 (U) - D2-2 Always Below 1 ohms D1-1 (D) or D2-1 - Body ground Always 10 kohms or higher D1-4 (U) or D2-2 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Remove the power window regulator motor assembly RH. Refer to «REMOVAL»(ref-451234-S12630486052012020700000) . Apply battery voltage to connector terminals 1 and 2. Check that the window regulator motor moves 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 TEXT IN ILLUSTRATION *1 Motor Gear Clockwise Counterclockwise NG --> See step 8 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR SWITCH ASSEMBLY) Disconnect the E1 power window regulator master switch assembly connector. Disconnect the D1 power window regulator switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E1-16 (U) - D1-5 (SU) Always Below 1 ohms E1-18 (D) - D1-2 (SD) Always Below 1 ohms E1-16 (U) or D1-5 (SU) - Body ground Always 10 kohms or higher E1-18 (D) or D1-2 (SD) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
6. REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-451234-S23518341842012020700000)
7. REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-451234-S13910824522012020700000)
8. REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to «REMOVAL»(ref-451234-S12630486052012020700000)

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