W/Harness Inspection

Engine Control
P0562 System Voltage Low - Inspection/Repair:_:W/Harness Inspection

Terminal & Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness 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?






Power Circuit Inspection

1. IG KEY "OFF".
2. Disconnect EMS Box and Key "ON".
3. Measure the voltage between power supply terminals of main relay harness connector and chassis ground.

Specification :B+




4. Is the measured voltage within specification ?






Control Circuit Inspection

1. IG KEY "OFF".
2. Disconnect EMS Box and ECM.
3. Measure the resistance between control terminal of main relay harness connector and main relay control terminal of ECM harness connector.

Specification :Approx. below 1Ohms




4. Is the measured resistance within specification ?






Control Relay Power Circuit Inspection

Check open in harness
1. IG "OFF" and disconnect the main relay and ECM connector.
2. Measure the resistance between control terminal of main relay harness connector and main relay control terminal of ECM harness connector.

Specification :Approx. below 1Ohms




3. Is the measured resistance within specification ?