Component Location
General Description

The ECM provides ground to one side of the coil of the main relay and the other side is connected to the battery. The ECM monitors battery voltage and the voltage after the main relay.

DTC Description

During engine running, if system voltage is above 16V, PCM sets P0563. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till consecutive 2 driving cycle.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

● Voltage too high

● Poor connection

● Short in circuit

● Faulty charging system

● Faulty main relay

● Faulty PCM

Enable Conditions

● Engine works

Threshold value

● System voltage >16V

Diagnosis Time

● Continuous

MIL On Condition

● 2 driving cycles

Specification

Coil Resistance

70Ω ~ 120Ω

Schematic Diagram
note
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