Power Supply and Ground Circuit Inspection

COMBINATION METERS


Power Supply and Ground Circuit Inspection


Symptom : When any power supply circuit is malfunction, the following function is not operative.
- BAT : Meter face illumination, Dot matrix LCD, Ring illumination, Turn signal/hazard indicator lights
- ACC : Meter face illumination, Dot matrix LCD, Pointer illumination, Speedometer, Tachometer
- IGN : Meter face illumination, Dot matrix LCD, Pointer illumination, Speedometer, Tachometer, Engine coolant temperature, Fuel gauge
1.CHECK FUSE
Check for blown fuses.





OK or NG
OK - GO TO 2.
NG - Be sure to eliminate cause of malfunction before installing new fuse. Schematic.
2.CHECK POWER SUPPLY CIRCUIT





Check voltage between combination meter harness connector and ground.





OK or NG
OK - GO TO 3.
NG - Check harness between combination meter and fuse.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.





3. Check continuity between combination meter harness connector and ground.





OK or NG
OK - INSPECTION END
NG - Repair harness or connector.