Toyota Corolla (E120): Inspection procedure

1 Inspect terminal voltage(idl)

  1. Remove the cruise control ecu assy with connector still connected.
  2.  disconnect the ecm connector.
  3.  turn the ignition switch to on.
  4.  measure voltage between terminal 13 (idl) of cruise control ecu assy connector and body ground when the throttle valve is fully closed and fully opened.

    Ok:

2 Check harness and connector(between cruise control ecu assy

2 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

    Share this page:

    Other materials:

    Circuit description
    The o/d main switch (transmission control switch) is a momentary type switch. When pressing the o/d main switch, the o/d off indicator light lights up and the ecm prohibits shifting into o/d, and when pressing it once again, the o/d off indicator light goes off and the ecm allows shifting in ...

    Inspection procedure
    1 Inspect fuse(ecu–ig fuse) Remove ecu–ig fuse from the instrument panel j/b.  check continuity of ecu–ig fuse. Ok: continuity 2 Inspect battery Ok: voltage: 10 – 14 v 3 Inspect skid control ecu connector(ig1 terminal voltage) In case of using hand–held te ...

    Engine coolant
    The coolant level is satisfactory if it is between the “F” and “L” lines on the reservoir when the engine is cold. 1 Reservoir cap 2 “F” line 3 “L” line If the level is on or below the “L” line, add coolant up to the “F” line. ■Coolant selection Only use “To ...