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Mercury
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2004
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Monterey V6-4.2L VIN 2
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Repair and Diagnosis
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Instrument Panel, Gauges and Warning Indicators
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Testing and Inspection
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Pinpoint Tests
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Pinpoint Tests - Instrument Cluster
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Test L
Test L
PINPOINT TEST L: THE
TACHOMETER
IS INOPERATIVE
Test L1-L2:
Test L3-L4:
Normal Operation
Engine rpm data is provided to the instrument cluster by the PCM through the SCP communication network.
Possible Causes
-
PCM
-
instrument cluster