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:

Removal
1. REMOVE BACK DOOR GARNISH CENTER 2. REMOVE BACK DOOR SIDE GARNISH LH 3. REMOVE BACK DOOR SIDE GARNISH RH 4. REMOVE BACK DOOR STRAP COVER 5. REMOVE BACK DOOR PULL STRAP 6. REMOVE BACK DOOR TRIM BOARD ASSEMBLY 7. REMOVE BACK DOOR SERVICE HOLE PLATE 8. REMOVE REAR SPOILER COVER (W/ REAR SPOIL ...

Past record
Type A Press the “CAR” button. Type B Press the “APPS” button, and then select “Eco” on the screen. If the “Trip Information” screen is displayed, select “Past Record”. Reset the past record data Best recorded fuel consumption Average fuel consumption ...

Problem symptoms table
SLIDING ROOF SYSTEM Symptom Suspected area AUTO function does not operate Sliding roof motor assembly Sliding roof system does not operate ECU-IG fuse S/ Roof fuse IG1 relay Sliding roof housing assembly Sliding roof motor switc ...