Toyota Sienna Quiz
Engine immobiliser

Terminals of ECU

In this manual: Engine immobiliser
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
11steps
~66min
3/5difficulty
Done 0 of 11

1. CHECK TRANSPONDER KEY AMPLIFIER

CHECK TRANSPONDER KEY AMPLIFIER
  1. Disconnect the I14 amplifier connector and measure the resistance between the terminal of the wire harness side connector and body ground.
CHECK TRANSPONDER KEY AMPLIFIER

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

  1. Reconnect the I14 amplifier connector and measure the resistance and voltage of each terminal of the connector
CHECK TRANSPONDER KEY AMPLIFIER

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

CHECK TRANSPONDER KEY AMPLIFIER
  1. Inspect using an oscilloscope.
  2. Waveform 1 (Reference):
    CHECK TRANSPONDER KEY AMPLIFIER
    CHECK TRANSPONDER KEY AMPLIFIER
  3. Waveform 2 (Reference):
    CHECK TRANSPONDER KEY AMPLIFIER

2. CHECK TRANSPONDER KEY ECU ASSEMBLY

CHECK TRANSPONDER KEY ECU ASSEMBLY
  1. Disconnect the T6 ECU connector and measure the resistance and voltage between each terminal of the wire harness side connector
CHECK TRANSPONDER KEY ECU ASSEMBLY

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

  1. Reconnect the T9 ECU connector and measure the voltage of each terminal of the connector.
CHECK TRANSPONDER KEY ECU ASSEMBLY
CHECK TRANSPONDER KEY ECU ASSEMBLY

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

CHECK TRANSPONDER KEY ECU ASSEMBLY
  1. Inspect using an oscilloscope.
  2. Wave form 1 (Reference):
    CHECK TRANSPONDER KEY ECU ASSEMBLY
    CHECK TRANSPONDER KEY ECU ASSEMBLY
  3. Wave form 2 (Reference):
    CHECK TRANSPONDER KEY ECU ASSEMBLY
    CHECK TRANSPONDER KEY ECU ASSEMBLY
  4. Wave form 3 (Reference):
    CHECK TRANSPONDER KEY ECU ASSEMBLY
    CHECK TRANSPONDER KEY ECU ASSEMBLY
  5. Wave form 4 (Reference):
    CHECK TRANSPONDER KEY ECU ASSEMBLY

3. CHECK ECM

CHECK ECM
  1. Disconnect the E11 ECM connector and measure the resistance between the terminal of the wire harness side connector and body ground.
CHECK ECM

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

  1. Reconnect the E11 ECM. Measure the voltage between each terminal of the connector according to the value(s) in the table below.
CHECK ECM

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

CHECK ECM
  1. Inspect using an oscilloscope.
  2. Waveform 1 (Reference):
    CHECK ECM
    CHECK ECM
  3. Waveform 2 (Reference):

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