Power Back Door System
TERMINALS OF ECUTerminals Of ECU:
1. CHECK POWER BACK DOOR ECU
Pinouts:
a. Disconnect the P13 and P14 ECU connectors and check the voltage and resistance of each terminal of the wire harness side connectors.
If the result is not as specified, there may be a malfunction on the wire harness side.
Pinouts:
b. Reconnect the ECU connectors and check the voltage of each terminal of the connectors.
HINT:
*1: Power back door opener/closer switch
*2: Transmitter switch (Back door)
*3: Power back door opener/closer switch, transmitter switch (back door), power back door closer switch or back door opener switch (Outside handle switch)
*4: When all the conditions listed below are met, the warning buzzer sounds.
Ignition switch is turned ON.
Shift lever is moved into P position.
Back door is fully closed.
*5: When any condition listed below is met, the sounding warning buzzer stops.
Shift lever is moved into P position.
Back door is fully closed.
HINT: Use an oscilloscope to check the output voltages of the power back door off switch, buzzer and pulse sensor.
If the result is not as specified, the ECU may have a malfunction.
Terminals Of ECU:
2. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
a. Disconnect the 1A, 1D, 1F, 1M J/B and B5 ECU connectors.
Pinouts:
b. Check the voltage and resistance between each terminal of the wire harness side connectors and the body ground.
If the result is not as specified, there may be a malfunction on the wire harness side.
Pinouts:
c. Reconnect the connectors and check the voltage between each terminal of the connectors and the body ground.
If the result is not as specified, the J/B assembly (body ECU) may have a malfunction.