Toyota Sienna Quiz
Engine hood / door

Terminals of ECU

In this manual: Engine hood / door
Introduction — 55Service specifications — 7Maintenance — 7Engine — 264U151e automatic transaxle — 108Transfer — 19Propeller shaft — 8Drive shaft — 14Differential — 16Axle — 18Suspension — 37Tire and wheel — 54Brake control — 141Parking brake — 16Steering Column — 11Power steering — 18Air conditioning — 106Supplemental restraint system — 146Seat belt — 22Theft deterrent — 14Engine immobiliser — 17Cruise control — 65Lighting — 61Wiper and washer — 13Door lock — 42Meter — 28Audio / visual — 94Navigation — 108Park assist / monitoring — 33Horn — 5Garage door opener — 42GR-FE Engine control system — 126Supplemental restraint system — 147Other system — 14Windshield / windowglass — 43Mirror — 23Instrument panel — 6Seat belt — 22Seat — 92Engine hood / door — 104Exterior — 39Interior — 5Sliding roof — 9Multiplex communication — 18Can communication — 23
~1min read

1. CHECK POWER BACK DOOR ECU

CHECK POWER BACK DOOR ECU
  1. 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.

  1. Reconnect the ECU connectors, and check the voltage of each terminal of the connectors.
CHECK POWER BACK DOOR ECU
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.

Test yourself

A quick Toyota Sienna quiz: every answer comes with an explanation and a link to the manual page.