Toyota Sienna Service Manual: Terminals of ECU

Toyota Sienna Service Manual / Engine hood / door / Power back door system / Terminals of ECU

1. CHECK POWER BACK DOOR ECU

CHECK POWER BACK DOOR ECU

Disconnect the P13 and P14 ECU connectors, and check the voltage or resistance of each terminal of the wire harness side connectors

CHECK POWER BACK DOOR ECU

If the result is not as specified, there may be a malfunction on the wire harness side.

Reconnect the ECU connectors, and check the voltage of each terminal of the connectors.

CHECK POWER BACK DOOR ECU

*1 Satellite switch (Back door)
*2 Transmitter switch (Back door)
*3 When all the conditions listed below are met, the warning buzzer sounds.

Ignition switch is turned ON
Shift lever is moved into any position except P position
Back door is open or power back door system is activated to open

*4 When any condition listed below is met, the warning buzzer turns off.

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 main switch, buzzer and pulse sensor.

If the result is not as specified, the ECU may have a malfunction.

Problem symptoms table

POWER BACK DOOR SYSTEM Symptom Suspected Area Power back door does not operate when switch* is pressed (* Switch indicates the satellite switch for power back door) ...

Diagnosis system

1. CHECK DLC3 The vehicle's ECU uses ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. NOTICE: ...

Other materials:

Heated oxygen sensor (for 2wd)
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Installation
1. INSTALL ENGINE OIL COOLER (a) Clean the oil cooler contact surface on the cooler mounting. (b) Install a new O-ring to the oil cooler. (c) Install the oil cooler assembly with the union bolt. Torque: 68 N*m (693 kgf*cm, 50 ft.*lbf) Install the 2 water by-pass hoses with the bolt ...

Personal/interior lights
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