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/PCM)

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

DTC Description

If the system voltage is over 16 V during 0.2 sec, ECM/PCM sets DTC P0563.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

•

Voltage check, high

1.

Poor connection

2.

Charging system

3.

Main relay

Enable Conditions

•

Time after engine start > 120sec

•

Vehicle speed ＞25km/h

Threshold Value

•

Voltage ＞ 16 V

Diagnostic Time

•

0.2 sec

MIL ON Condition

•

3 driving cycle

Diagnostic Circuit Diagram
Яндекс.Метрика