Tachometer Problems

Test 1 - 4:

Test 5 - 9:

SYMPTOM
TACHOMETER PROBLEMS

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