Diesel Data: Automotive Repair

Component Inspection





Engine Control
P0563 System Voltage High - Inspection/Repair:_:Component Inspection

Component Inspection

Main Relay Check
1. IG KEY "OFF".
2. Disconnect main relay.
3. Measure the resistanc between Power from battery(30) terminal and Power to component(87) of main relay harness connector and chassis ground.
4. Measure the resistanc between Power from battery(85) terminal and Power to component(86) of main relay harness connector and chassis ground.









5. Is the measured resistance within specifications ?