Engine Speed Signal Inspection

COMBINATION METERS


Engine Speed Signal Inspection

Symptom: Improper tachometer indication.
1.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. CONSULT-III Function (Engine) (with
QR25DE).
- Perform ECM self-diagnosis. For California (with
MR20DE for California).
- Perform ECM self-diagnosis. Except For California (with
MR20DE except California).
NG - Replace combination meter. Removal And Installation.