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Engine Speed Signal Inspection

Symptom: Improper tachometer indication.

CHECK COMBINATION METER INPUT SIGNAL
1. Start engine and select "METER/M&A" on CONSULT-III.
2. Using "TACHO METER" on "DATA MONITOR", compare the value of "DATA MONITOR" with tachometer pointer of combination meter.
OK or NG

OK: Perform ECM self-diagnosis. Refer to "SELF-DIAG RESULTS MODE ".

NG: Replace combination meter. Refer to "COMBINATION METER ".