( TL19E20A20326939902FAAT00 )

MIL Circuit Troubleshooting

1. Turn the ignition switch to ON (II).

1. Do the gauge self-diagnostic function.

Does the MIL indicator flash?

YES | - | Go to Step 3 .
NO | - | Substitute a known-good gauge control module and recheck. If the MIL circuit is OK, replace the original gauge control module. ■

1. Connect the HDS to the DLC.

1. Check the SCS in the DATA LIST with the HDS.

Is a short indicated?

YES | - | Go to Step 5 .
NO | - | Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM. ■

1. Turn the ignition switch to LOCK (0).

1. Disconnect ECM/PCM connector A (44P), then disconnect the HDS.

1. Check for continuity between ECM/PCM connector terminal A31 and body ground.

Is there continuity?

YES | - | Repair short in the wire between the ECM/PCM (A31) and the EPS control unit, the headlight leveling control unit, or the DLC.■
NO | - | Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM. ■