Terminals Of Ecu
- CHECK POWER BACK DOOR DRIVE UNIT (POWER BACK DOOR ECU)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Disconnect the O15 ECU connector.
- Measure the voltage and resistance according to the value(s) in the table below:TESTER CONNECTION SPECIFIED CONDITION TABLE
Tester Connection Wiring Color Terminal Description Condition Specified Condition O15-10 (ECUB) - Body ground BR - Body ground ECUB power supply Always 10 to 14 V O15-12 (B) - Body ground B - Body ground B power supply Always 10 to 14 V O15-8 (IG) - Body ground GR - Body ground IG power supply Ignition switch on (IG) 10 to 14 V O15-8 (IG) - Body ground GR - Body ground IG power supply Ignition switch off Below 1 V O15-17 (MSW) - Body ground V - Body ground Power back door main switch signal circuit Power back door main switch not pushed Below 1 Ω O15-17 (MSW) - Body ground V - Body ground Power back door main switch signal circuit Power back door main switch pushed 10 kΩ or higher O15-20 (FUL) - Body ground LG - Body ground Back door courtesy light switch signal circuit Back door is opened Below 1 Ω O15-20 (FUL) - Body ground LG - Body ground Back door courtesy light switch signal circuit Back door is closed 10 kΩ or higher O15-4 (DS1) - Body ground P - Body ground Back door closer switch signal circuit Back door closer switch ON Below 1 Ω O15-4 (DS1) - Body ground P - Body ground Back door closer switch signal circuit Back door closer switch OFF 10 kΩ or higher O15-15 (OSL) - O15-14 (OSE) GR - Y Power back door touch sensor LH circuit Back door touch sensor LH not pressed Approx 1 kΩ O15-15 (OSL) - O15-14 (OSE) GR - Y Power back door touch sensor LH circuit Back door touch sensor LH pressed Below 100 Ω O15-13 (OSR) - O15-14 (OSE) R - Y Power back door touch sensor RH circuit Back door touch sensor RH not pressed Approx 1 kΩ O15-13 (OSR) - O15-14 (OSE) R - Y Power back door touch sensor RH circuit Back door touch sensor RH pressed Below 100 Ω O15-11 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the O15 ECU connector.
- Measure the voltage according to the value(s) in the table below:TESTER CONNECTION SPECIFIED CONDITION TABLE
Tester Connection Wiring Color Terminal Description Condition Specified Condition O15-26 (BZR+) - Body ground B - Body ground Power back door warning buzzer signal input Back door warning buzzer is sounding 10 to 14 V O15-26 (BZR+) - Body ground B - Body ground Power back door warning buzzer signal input Back door warning buzzer is stopped Below 1 V O15-2 (DC+) - O15-1 (DC-) B-G Power back door lock motor circuit Back door lock motor is operating 10 to 14 V O15-2 (DC+) - O15-1 (DC-) B-G Power back door lock motor circuit Back door lock motor is stopped Below 1 V O15-22 (HAF) - Body ground R - Body ground Back door lock half-latch switch signal circuit Back door is opened → Back door closer motor is operating → Back door is closed Below 1 V → 10 to 14 V → Below 1 V O15-24 (POS) - Body ground LG - Body ground Back door lock position switch signal circuit Back door is opened → Back door closer motor is operating → Back door is closed Below 1 V → 10 to 14 V → Below 1 V HINT:
If the result is not as specified, the ECU may have a malfunction.
- CHECK MAIN BODY ECU
- Disconnect the D7, 1F and 1M connectors.
- Measure the resistance according to the value(s) in the table below.TESTER CONNECTION SPECIFIED CONDITION TABLE
Tester Connection Wiring Color Terminal Description Condition Specified Condition D7-2 (PBDS) - Body ground R - Body ground Power back door open / close switch signal circuit Power back door open / close switch ON Below 1 Ω D7-2 (PBDS) - Body ground R - Body ground Power back door open / close switch signal circuit Power back door open / close switch OFF 10 kΩ or higher 1F-10 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω 1M-9 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω If the result is not as specified, there may be a malfunction on the wire harness side.