Component Location
General Description

The purpose of the System Voltage is to detect an excessively low or high system voltage that may be caused by a malfunctioning charging system.

System Voltage is the ignition voltage potential at the Powertrain Control Module (ECM)

ECM measures and compares voltage from ignition key and each relay. With this mechanism, ECM knows if the main relay switch turns on after IG on or if turns OFF after IG off.

DTC Description

If ECM detects malfunction in power supply system, ECM sets DTC P0560.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

•

Voltage check

1.

Poor connection

2.

Open / Short

3.

Main relay

Enable Conditions

•

Engine speed = 0rpm

•

Main relay condition off

Threshold Value

•

Counter of nonplausible voltage detection (higher than 0V) ≥ 5 times

Diagnostic Time

•

Continuous

MIL ON Condition

•

DTC only

Diagnostic Circuit Diagram
note
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