Toyota Sienna Quiz
Seat

Terminals of ECU

In this manual: Seat
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
8steps
~48min
2/5difficulty
Done 0 of 8

1. POSITION CONTROL ECU AND SWITCH ASSEMBLY (POWER SEAT CONTROL SWITCH AND ECU)

  1. Disconnect the P58 and P59 connectors.
    POSITION CONTROL ECU AND SWITCH ASSEMBLY
  2. Check the voltage of each terminal of the wire harness side connectors.
    POSITION CONTROL ECU AND SWITCH ASSEMBLY

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

  1. Check the resistance of each terminal of the wire harness side connectors.

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

  1. Reconnect the P58 and P59 connectors.
  2. Check the voltage of each terminal of the connectors.
    POSITION CONTROL ECU AND SWITCH ASSEMBLY
    POSITION CONTROL ECU AND SWITCH ASSEMBLY

If the result is not as specified, the position control ECU and switch assembly may be malfunctioning.

2. OUTER MIRROR CONTROL ECU LH

  1. Disconnect the outer mirror control ECU LH connector.
    OUTER MIRROR CONTROL ECU LH
  2. Check the voltage of each terminal of the wire harness side connectors.
    OUTER MIRROR CONTROL ECU LH

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

  1. Check the resistance of each terminal of the wire harness side connector.
OUTER MIRROR CONTROL ECU LH

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

  1. Reconnect the outer mirror control ECU LH connector.
  2. Check the voltage of each terminal of the connectors.
    OUTER MIRROR CONTROL ECU LH

If the result is not as specified, the outer mirror control ECU LH may be malfunctioning.

Test yourself

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