Perform the reproduction test as per the following procedure for each unit.
- Turn the ignition switch OFF.
- Disconnect the battery cable from the negative terminal.
- Disconnect one of the unit connectors of CAN communication system.
NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first.
- Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced.
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms.
Inspection result
Reproduced
>>Connect the connector. Check other units as per the above procedure.
Non‐reproduced
>>Replace the unit whose connector was disconnected.