Toyota Corolla (E120): O/d main switch circuit

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Check dlc3
The vehicle’s ecm uses the iso 9141–2 for communication protocol. The terminal arrangement of the dlc3 complies with sae j1962 and matches the iso 9141–2 format. Hint: if the display shows unable to connect to vehicle when you have connected the cable of the obd ii scan tool or the h ...

Inspection procedure
1 Inspect terminal voltage(idl) Remove the cruise control ecu assy with connector still connected.  disconnect the ecm connector.  turn the ignition switch to on.  measure voltage between terminal 13 (idl) of cruise control ecu assy connector and body ground when the ...

Replacement
Hint: components: 1. Remove radiator grille sub–assy 2. Remove front bumper cover 3. Remove lh headlamp assy Remove the 3 bolts.  pull out the headlight assy lh forward, then disconnect the bracket of body side. Release the claws and disconnect the connectors as sh ...