Tachometer Problems

Test 1 - 4:

Test 5 - 9:

SYMPTOM
TACHOMETER PROBLEM

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