Toyota Tacoma manuals

Toyota Corolla Repair Manual: Inspection procedure

1 Check operation(overdrive)

  1. Drive the vehicle after the engine warms up.
  2.  check that overdrive on e off occurs by an operation of the o/d switch onoff.

2 Inspect terminal voltage(od)

2 Inspect terminal voltage(od)

  1. Remove the cruise control ecu assy with the connector still connected.
  2.  turn the ignition switch to on.
  3.  disconnect the cruise control ecu assy connector.
  4.  measure voltage between terminal 14 (od) of harness side connector of cruise control ecu assy and body ground.

    Ok: voltage: 10 14 v

3 Inspect terminal voltage(ect)

3 Inspect terminal voltage(ect)

  1. Connect the cruise control ecu assy connector.
  2.  perform the test drive after engine warms up.
  3.  check voltage between terminal 6 (ect) of cruise control ecu assy connector and body ground when o/d switch is on and off.

    Ok:

4 Check harness and connector(between cruise control ecu assy

4 Check harness and connector(between cruise control ecu assy and electronically controlled transmission solenoid)

  1. Check for open and short circuit in harness and connector between cruise control ecu assy and electronically controlled transmission solenoid

Check and replace cruise control ecu assy

Check and replace cruise control ecu assy

5 Check harness and connector(between cruise control ecu assy and ecm)

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

Check and replace cruise control ecu assy

Check and replace cruise control ecu assy

Circuit description
When driving uphill under cruise control, in order to reduce the number of shifting due to onoff overdrive operation and to provide smooth driving, when down shifting in the electronically contr ...

Park/neutral position switch circuit
...

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