Power Window Control System (Diagnostics - Introduction): Other Scion FR-S I

PRECAUTION [07/2013 - 12/2013]

1. POWER WINDOW CONTROL SYSTEM PRECAUTIONS NOTE: The power window control system uses a LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - 12/2013]»(ref-612424-S10195283622014042900000) . 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. When the power window regulator master switch assembly, power window regulator switch assembly and power window regulator motor assembly is replaced, the power window control system must be initialized. Refer to «INITIALIZATION [07/2013 - ]»(ref-612250-S35237050992014042900000) . After the door glass or weatherstrip, etc. have been replaced, if AUTO UP is performed at the position where the work was performed, a different window movement speed to the standard operating learning value may be detected, causing the jam protection function to operate. When the jam protection function malfunctions and prevents the door glass from closing completely, the following procedure can be used to cancel the jam protection function and allow the door glass to be closed*1. Repeat the AUTO UP maintain --> jam protection function operation twice in succession*2. The third repeat of the AUTO UP maintain operation will cause the position of the upper edge of the door glass to be relearned, allowing the door glass to be closed. *1: In some cases, the state of the door glass or regulator may prevent the glass from being closed, even in this mode. *2: If any action other that the AUTO UP operation (DOWN operation, IG OFF, timer-operated OFF, index operation, etc.) is performed between the operation of the jam protection function and the AUTO UP maintain, this count will be reset. The jam protection function may operate unexpectedly even when the power window control system is normal, due to detection of a different operation learned value when the door glass moving speed changes sharply under any of the following conditions: A power window is opened or closed while the vehicle is being driven on a rough road. A power window is opened or closed while the door is being opened or closed. A sharp voltage change. Do not disconnect the battery while the ignition switch is ON. Otherwise, the power window system may have a malfunction.

PRECAUTION [12/2013 - ]

1. IGNITION SWITCH EXPRESSIONS The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this Service Information. Expression Ignition Switch (Position) Engine Switch (Condition) Ignition Switch off LOCK Off (Lock) Ignition Switch ACC ACC On (ACC) Ignition Switch ON ON On (IG) Engine Start START On (Start)
2. POWER WINDOW CONTROL SYSTEM PRECAUTIONS NOTE: The power window control system uses a LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Refer to «INITIALIZATION [07/2013 - ]»(ref-612250-S35237050992014042900000) . 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. When the power window regulator master switch assembly, power window regulator switch assembly and power window regulator motor assembly is replaced, the power window control system must be initialized. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [12/2013 - ]»(ref-612381-S31527157402014042900000) . After the door glass or weatherstrip, etc. have been replaced, if AUTO UP is performed at the position where the work was performed, a different window movement speed to the standard operating learning value may be detected, causing the jam protection function to operate. When the jam protection function malfunctions and prevents the door glass from closing completely, the following procedure can be used to cancel the jam protection function and allow the door glass to be closed*1. Repeat the AUTO UP maintain --> jam protection function operation twice in succession*2. The third repeat of the AUTO UP maintain operation will cause the position of the upper edge of the door glass to be relearned, allowing the door glass to be closed. *1: In some cases, the state of the door glass or regulator may prevent the glass from being closed, even in this mode. *2: If any action other than the AUTO UP operation (DOWN operation, IG OFF, timer-operated OFF, index operation, etc.) is performed between the operation of the jam protection function and the AUTO UP maintain, this count will be reset. The jam protection function may operate unexpectedly even when the power window control system is normal, due to detection of a different operation learned value when the door glass moving speed changes sharply under any of the following conditions: A power window is opened or closed while the vehicle is being driven on a rough road. A power window is opened or closed while the door is being opened or closed. A sharp voltage change. Do not disconnect the battery while the ignition switch is ON. Otherwise, the power window system may have a malfunction.

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COMMUNICATION TABLE

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COMMUNICATION TABLE

TERMINALS OF ECU [12/2013 - ]

1. POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Disconnect the E8 power window regulator master switch assembly connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition E8-12 (+B) - E8-5 (GND) SB - B Power supply Always 11 to 14 V E8-5 (GND) - Body ground B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the E8 power window regulator master switch assembly connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition E8-6 (WU) - E8-5 (GND) W-B - B Power window motor UP output Ignition switch ON, power window regulator master switch assembly off 11 to 14 V Ignition switch ON, power window regulator master switch assembly UP (Manual operation) Below 1 V E8-6 (WU) - E8-5 (GND) W-B - B Power window motor AUTO UP output Ignition switch ON, driver side door power window fully open 11 to 14 V Ignition switch ON, driver side door power window moving, power window regulator master switch assembly fully pulled UP (Automatic operation) Below 1 V Ignition switch ON, driver side door power window fully closed 11 to 14 V E8-7 (WD) - E8-5 (GND) LG - B Power window motor DOWN output Ignition switch ON, power window regulator master switch assembly off 11 to 14 V Ignition switch ON, power window regulator master switch assembly DOWN (Manual operation) Below 1 V E8-7 (WD) - E8-5 (GND) LG - B Power window motor AUTO DOWN output Ignition switch ON, driver side door power window fully open 11 to 14 V Ignition switch ON, driver side door power window moving, power window regulator master switch assembly fully pushed DOWN (Automatic operation) Below 1 V Ignition switch ON, driver side door power window fully closed 11 to 14 V If the result is not as specified, the power window regulator master switch assembly may have a malfunction.
2. CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY Disconnect the F6 power window regulator switch assembly connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition F6-12 (+B) - F6-5 (GND) SB - B Power supply Always 11 to 14 V F6-5 (GND) - Body ground B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the F6 power window regulator switch assembly connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition F6-6 (WU) - F6-5 (GND) W-B - B Power window motor UP output Ignition switch ON, power window regulator switch assembly off 11 to 14 V Ignition switch ON, power window regulator switch assembly UP (Manual operation) Below 1 V F6-6 (WU) - F6-5 (GND) W-B - B Power window motor AUTO UP output Ignition switch ON, front passenger side door power window fully open 11 to 14 V Ignition switch ON, front passenger side door power window moving, power window regulator switch assembly fully pulled UP (Automatic operation) Below 1 V Ignition switch ON, front passenger side door power window fully closed 11 to 14 V F6-7 (WD) - F6-5 (GND) LG - B Power window motor DOWN output Ignition switch ON, power window regulator switch assembly off 11 to 14 V Ignition switch ON, power window regulator switch assembly DOWN (Manual operation) Below 1 V F6-7 (WD) - F6-5 (GND) LG - B Power window motor AUTO DOWN output Ignition switch ON, front passenger side door power window fully open 11 to 14 V Ignition switch ON, front passenger side door power window moving, power window regulator switch assembly fully pulled DOWN (Automatic operation) Below 1 V Ignition switch ON, front passenger side door power window fully closed 11 to 14 V If the result is not as specified, the power window regulator switch assembly may have a malfunction.
3. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY Disconnect the E5 power window regulator motor assembly (for driver side) connector. Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector disconnected. Tester Connection Wiring Color Terminal Description Condition Specified Condition E5-5 (VCC) - E5-4 (SGD) W - R Power supply Always 11 to 14 V E5-4 (SGD) - Body ground R - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the E5 power window regulator motor assembly (for driver side) connector. Measure the voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition E5-1 (WU) - E5-4 (SGD) W-B - R Power window motor UP input Ignition switch ON, power window regulator master switch assembly off 11 to 14 V Ignition switch ON, power window regulator master switch assembly UP (Manual operation) Below 1 V E5-1 (WU) - E5-4 (SGD) W-B - R Power window motor AUTO UP input Ignition switch ON, driver side door power window fully open 11 to 14 V Ignition switch ON, driver side door power window moving, power window regulator master switch assembly fully pulled UP (Automatic operation) Below 1 V Ignition switch ON, driver side door power window fully closed 11 to 14 V E5-3 (WD) - E5-4 (SGD) LG - R Power window motor DOWN input Ignition switch ON, power window regulator master switch assembly off 11 to 14 V Ignition switch ON, power window regulator master switch assembly DOWN (Manual operation) Below 1 V E5-3 (WD) - E5-4 (SGD) LG - R Power window motor AUTO UP input Ignition switch ON, driver side door power window fully open 11 to 14 V Ignition switch ON, driver side door power window moving, power window regulator master switch assembly fully pulled DOWN (Automatic operation) Below 1 V Ignition switch ON, driver side door power window fully closed 11 to 14 V If the result is not as specified, the power window regulator motor assembly (for driver side) may have a malfunction.
4. CHECK MAIN BODY ECU (NETWORK GATEWAY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY TEXT IN ILLUSTRATION *1 Instrument Panel Junction Block Assembly *2 Main Body ECU (Network Gateway ECU) Remove the main body ECU (network gateway ECU) from the instrument panel junction block assembly. Measure the resistance and voltage according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition MB-1 (BECU) - Body ground None - Body ground Battery power supply Always 11 to 14 V MB-8 (IG) - Body ground None - Body ground Ignition switch power supply Ignition switch ON 11 to 14 V Ignition switch off Below 1 V MB-9 (ACC) - Body ground None - Body ground ACC power supply Ignition switch ACC 11 to 14 V Ignition switch off Below 1 V MB-11 (GND) - Body ground None - Body ground Ground Always Below 1 ohms MB-32 (+B) - Body ground None - Body ground Battery power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction on the wire harness side. Reinstall the main body ECU (network gateway ECU). Measure the voltage, check for pulse according to the valve(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Condition 3B-13 - Body ground GR - Body ground Front door courtesy light switch RH input Front door RH open Below 1 V Front door RH closed 11 to 14 V 3A-28 - Body ground V - Body ground Front door courtesy light switch LH input Front door LH open Below 1 V Front door LH closed 11 to 14 V D5-4 - Body ground LG - Body ground LIN communication signal Ignition switch ON Pulse generation D5-22 (ACC)* - Body ground W - Body ground ACC power supply Ignition switch ACC 11 to 14 V Ignition switch off Below 1 V *: w/ Smart Key System If the result is not as specified, the main body ECU (network gateway ECU) or instrument panel junction block assembly may have a malfunction.