Pinpoint Test S: The Service Engine Soon Indicator Is Never/Always On

S1 CARRY OUT THE INSTRUMENT CLUSTER SERVICE ENGINE SOON
INDICATOR ACTIVE COMMAND
- Connect the diagnostic tool.
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster Active Command.
- Trigger the instrument cluster active command MIL.
- Did the SERVICE ENGINE SOON indicator illuminate?
1. Yes: REFER to INTRODUCTION - CNG, FLEX-FUEL & GASOLINE .
2. No: GO to S2.
S2 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect all the instrument cluster connectors.
- Check for:
  - corrosion
  - pushed-out pins
- Connect all the instrument cluster connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. Yes: INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . TEST the system for normal operation.
2. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.