Toyota Sienna Quiz
Door lock

Terminals of ECU

In this manual: Door lock
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
4steps
~24min
2/5difficulty
Done 0 of 4

1. CHECK DRIVER SIDE J/B ASSEMBLY (MULTIPLEX NETWORK BODY ECU)

  1. Disconnect the 1C, 1J, 1L, 1K, 1P, B6, B7 and B9 J/ B connectors.
    CHECK DRIVER SIDE J/B ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
  2. Measure the voltage and resistance according to the value(s) in the table below.

Standard

Standard

HINT:

  • If the result is not as specified, there may be a malfunction on the wire harness side.
  • *1: w/o Power back door
  1. Reconnect the J/B and ECU connectors and measure the voltage according to the value(s) in the table below.

Standard voltage

Standard voltage
Standard voltage

HINT:

  • *1: w/o Power Back Door
  • Use an oscilloscope to check the output voltages of terminals LSWD, LSWP, LSWL and LSWR.
  • If the result is not as specified, the J/B (body ECU) may have a malfunction.

2. CHECK POWER BACK DOOR ECU (w/ Power back door system)

  1. Disconnect the P13 and P14 ECU connectors.
    CHECK POWER BACK DOOR ECU (w/ Power back door system)
  2. Measure the voltage and resistance according to the value(s) in the table below.

Standard

Standard

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

  1. Reconnect the ECU connectors and measure the voltage according to the value(s) in the table below.

Standard voltage

Standard voltage

HINT: 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.