W/Harness Inspection

C1101 Battery Voltage High

Inspection/Repair - W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?






Alternator Output Voltage Inspection

1. Engine "ON".
2. Measure voltage between the battery terminal (+) and the battery terminal (-).

Specification : Below. 17.5 V




3. Is the measured voltage within specifications?






Power Circuit Inspection

1. Ignition "ON" & Engine "OFF".
2. Measure voltage between the battery terminal (+) and power terminal of the HECU harness connector.

Specification : Approx. below 0.2 V




3. Is the measured voltage within specifications?






Ground Circuit Inspection

1. Ignition "OFF" & Engine "OFF".
2. Disconnect HECU connector.
3. Measure resistance between ground terminal of the HECU harness connector and chassis ground.

Specification : Approx. below 1 Ohms




4. Is the measured resistance within specifications?