Component Inspection

IG "OFF".
Disconnect ECM/PCM harness connector.
Short terminal 53/C01-1 (94/C01) of PCM (ECM) harness connector to ground.
Specification: Fuel filler cap lamp ON.

Fig 1: Shorting Terminal 53/C01-1 Of PCM Harness Connector To Ground (A/T)

Fig 2: Shorting Terminal 94/C01 Of ECM Harness Connector To Ground (M/T)
Is the Fuel filler cap warning lamp turned on normally?
YES : --> Substitute with a known - good ECM/PCM and check for proper operation. If the problem is corrected, replace ECM/PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

NO : --> Substitute with a known - good instrument cluster and check for proper operation. If the problems corrected, replace instrument cluster and go to "VERIFICATION OF VEHICLE REPAIR " procedure.