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 SLIDE DOOR ECU LH (WITH POWER SLIDE DOOR)

CHECK POWER SLIDE DOOR ECU LH
  1. Disconnect the P25 and P26 ECU connectors, and check the voltage and resistance of each terminal of the wire harness side connectors.
CHECK POWER SLIDE DOOR ECU LH

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 SLIDE DOOR ECU LH

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

2. CHECK POWER SLIDE DOOR ECU RH

CHECK POWER SLIDE DOOR ECU RH
  1. Disconnect the P27 and P28 ECU connectors, and check the voltage and resistance of each terminal of the wire harness side connectors.
CHECK POWER SLIDE DOOR ECU RH

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 SLIDE DOOR ECU RH

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

3. CHECK SLIDE DOOR CLOSER RELAY LH (WITHOUT POWER SLIDE DOOR)

CHECK SLIDE DOOR CLOSER RELAY LH
  1. Disconnect the S37 relay connector, and check the voltage and resistance of each terminal of the wire harness side connectors.
CHECK SLIDE DOOR CLOSER RELAY LH

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

  1. Reconnect the relay connector, and check the voltage of each terminal of the connectors.
CHECK SLIDE DOOR CLOSER RELAY LH

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

Test yourself

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