One Gauge Not Operating Properly

SYMPTOM
* ONE GAUGE NOT OPERATING PROPERLY

POSSIBLE CAUSES
- Speedometer related DTC's present
- Oil gauge not reading > 4 psi at idle
- Pinion factor incorrect
- Oil level low
- Charging related DTC's present
- Instrument cluster circuit board defective
- Oil pressure sensor defective
- Instrument cluster defective
- Oil pressure sense circuit open
- Oil pressure sense signal circuit short to ground
- Cooling system operation faulty
- DRB not showing PCM active ON bus
- DRB shows ECT sensor voltage too high
- DRB shows ECT sensor voltage too low
- Fuel gauge defective
- Oil pressure switch defective
- Powertrain Control Module (JTEC) defective