F1 Check Ignition Power to Indicator

- Disconnect instrument cluster connector C1 and C3.

Connector:

Connector:

- Connect a voltmeter between pin C3-8, circuit 640 (R/Y) and pin C1-7, circuit 603 (DG).

- Is voltage present momentarily when ignition switch is turned to RUN?

YES -- Replace indicator bulb. Restore vehicle. Retest system.

NO -- Go to F2. F2 Check Circuit 640 (R/Y) Input to Indicator