Operation check
NOTE:
Make sure that all related connector terminals are in good contact condition before combination meter inspection.
- Confirm that DTC P0116, DTC P0117 and/or DTC P0118 are not detected. If it is detected, go to each diagnostic flow table.
- Turn ignition switch to OFF position.
- Remove combination meter referring to COMBINATION METER REMOVAL AND INSTALLATION .
- Confirm that there is no abnormal point in "YEL/GRN" wire of combination meter harness.
- Confirm that there are no abnormal point in power and ground wire circuit of combination meter harness.
- Connect combination meter connectors from combination meter.
- Connect oscilloscope between terminals "YEL/GRN" and "BLK" wire of combination meter connector.
- Turn ignition switch to ON position.
- Check that there is waveform from ECM to engine coolant temperature meter.
If check result is satisfied, replace combination meter.
If check result is not satisfied, substitute a known-good ECM and recheck.