Tachometer

Test 540 - 544:

Test 545 - 548:

SYMPTOM
* TACHOMETER

POSSIBLE CAUSES
- Instrument tachometer defective
- DRB displays RAM fault
- BCM tach input/output defective
- Instrument cluster circuit board defective
- Tachometer/speedometer gauge pack
- DRB shows bus operational failure
- MIC cluster mismatch