Toyota Corolla (E120): Inspection procedure

1 Inspect dlc3 terminal voltage

  1. Turn the ignition switch to on.
  2.  measure voltage between terminals 13 (tc) and 4 (cg) of dlc3.

    Ok: voltage: 10 – 16 v

2 Check harness and connector(between cruise control ecu assy

2 Check harness and connector(between cruise control ecu assy and dlc3)

  1. Check for open and short circuit in harness and connector between cruise control ecu assy and dlc3

Check and replace cruise control ecu assy

Check and replace cruise control ecu assy

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    Circuit description
    Monitor description The ecm commands gearshift by turning the shift solenoid valves ”on/off”. When there is an open or short circuit in any shift solenoid valve circuit, the ecm detects the problem and the mil comes on. Illuminating the mil, the ecm performs the fail–safe and turns ...

    Check and replace ecu
    Notice: start an inspection of the connector from the backside of the connector on the wire harness side with the connector connected to the ecu. When no measurement condition is specified, perform the inspection with the engine stopped and also the ignition switch on. First check the ec ...

    Replacement
    Hint: components: 1. Precaution 2. Disconnect battery negative terminal 3. Remove front door scuff plate rh 4. Remove rear door scuff plate rh 5. Remove front door opening trim rh 6. Remove rear door opening trim rh 7. Remove lap belt outer anchor cover 8. Remove center pillar garnis ...