CHART A2-1 (PRIZM LSi) - NO MALFUNCTION INDICATOR LIGHT: Notes

Malfunction Indicator Light (MIL) should remain on when ignition switch is in ON position and engine is not running. Battery voltage is applied to indicator bulb. PCM controls indicator bulb and turns it on by providing a ground path through Red/Yellow wire to PCM.

1. Checks if engine will start.
2. Checks if PCM is receiving power.
3. Checks for open in Red/Yellow wire to PCM or a faulty PCM.
4. Checks if EFI F-HTR relay switch is receiving power.
5. Checks if PCM has a good ground.
6. Checks for open in Red/Yellow wire to instrument cluster.
7. Checks if MIL is receiving power.
8. Checks if EFI F-HTR relay coil is receiving power.
9. Checks for open in EFI F-HTR ground wire.
10. Checks for open in Black/Orange wire between junction block 1 and fuse/relay box or a faulty junction block 1.