POWER BACK DOOR SYSTEM TERMINALS OF ECU
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CHECK POWER BACK DOOR DRIVE UNIT (POWER BACK DOOR ECU)
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Disconnect the O14 ECU connector.
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Measure the voltage and resistance according to the value(s) in the table below:
Tester Connection Wiring Color Terminal Description Condition Specified Condition O14-10 (ECUB) - Body ground BR - Body ground ECUB power supply Always 10 to 14 V O14-12 (B) - Body ground B - Body ground B power supply Always 10 to 14 V O14-8 (IG) - Body ground GR - Body ground IG power supply Ignition switch on (IG) 10 to 14 V O14-8 (IG) - Body ground GR - Body ground IG power supply Ignition switch off Below 1 V O14-17 (MSW) - Body ground V - Body ground Power back door main switch signal circuit Power back door main switch not pushed Below 1 Ω O14-17 (MSW) - Body ground V - Body ground Power back door main switch signal circuit Power back door main switch pushed 10 kΩ or higher O14-20 (FUL) - Body ground LG - Body ground Back door courtesy light switch signal circuit Back door is opened Below 1 Ω O14-20 (FUL) - Body ground LG - Body ground Back door courtesy light switch signal circuit Back door is closed 10 kΩ or higher O14-4 (DS1) - Body ground P - Body ground Back door closer switch signal circuit Back door closer switch ON Below 1 Ω O14-4 (DS1) - Body ground P - Body ground Back door closer switch signal circuit Back door closer switch OFF 10 kΩ or higher O14-15 (OSL) - O14-14 (OSE) GR - Y Power back door touch sensor LH circuit Back door touch sensor LH not pressed Approx. 1 kΩ O14-15 (OSL) - O14-14 (OSE) GR - Y Power back door touch sensor LH circuit Back door touch sensor LH pressed Below 100 Ω O14-13 (OSR) - O14-14 (OSE) R - Y Power back door touch sensor RH circuit Back door touch sensor RH not pressed Approx. 1 kΩ O14-13 (OSR) - O14-14 (OSE) R - Y Power back door touch sensor RH circuit Back door touch sensor RH pressed Below 100 Ω O14-11 (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.
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Reconnect the O14 ECU connector.
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Measure the voltage according to the value(s) in the table below:
Tester Connection Wiring Color Terminal Description Condition Specified Condition O14-26 (BZR+) - Body ground B - Body ground Power back door warning buzzer signal input Back door warning buzzer is sounding 10 to 14 V O14-26 (BZR+) - Body ground B - Body ground Power back door warning buzzer signal input Back door warning buzzer is stopped Below 1 V O14-2 (DC+) - O14-1 (DC-) B - G Power back door lock motor circuit Back door lock motor is operating 10 to 14 V O14-2 (DC+) - O14-1 (DC-) B - G Power back door lock motor circuit Back door lock motor is stopped Below 1 V O14-22 (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
O14-24 (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
Tech Tips
If the result is not as specified, the ECU may have a malfunction.
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CHECK MAIN BODY ECU
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Disconnect the D8, 1F and 1M connectors.
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Measure the resistance according to the value(s) in the table below.
Tester Connection Wiring Color Terminal Description Condition Specified Condition D8-26 (PBDS) - Body ground Y - Body ground Power back door open / close switch signal circuit Power back door open / close switch ON Below 1 Ω D8-26 (PBDS) - Body ground Y - 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.
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