Operation CHARM
: Car repair manuals for everyone.
Home
>>
Mercury Truck
>>
2004
>>
Mountaineer 2WD V6-4.0L VIN K Flex Fuel
>>
Repair and Diagnosis
>>
Instrument Panel, Gauges and Warning Indicators
>>
Testing and Inspection
>>
Pinpoint Tests
>>
Pinpoint Tests - Instrument Cluster
>>
Test M
Test M
PINPOINT TEST M: THE
TACHOMETER
IS INOPERATIVE
Test M1-M2:
Normal Operation
Engine rpm data is provided to the instrument cluster by the PCM through the CAN, circuits 3125 (RD/YE) and 3126 (TN/YE).
Possible Causes
-
PCM
-
instrument cluster