Component Location
General Description

Normally, battery voltage fluctuates from 11.5V to 14.5V. Especially at cranking, voltage can drop to 9.8V. Therefore, actuators which require 12V power supply meet fluctuation of power by 5V. A little change of voltage supply can shift controlling characteristic of actuators, such as injectors, RPCV and EGR actuator, which should be controlled delicately. To correct controlling characteristic change arrised from voltage fluctuation, ECM performs actuator operating correction according to voltage change as detecting battery voltage change.

DTC Description

P0563 is set when battery voltage above 17.3V is detected for more than 5 sec.. Check alternator component. (overcharging of alternator)

▶ ECM senses battery voltage as monitoring the voltages in ECM(CDD-K)connector terminal 1,3,5 which are transmitted from main relay.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

● Voltage monitoring

● Charging circuit

● Alternator component

Enable Conditions

● IG KEY "ON"

Threshold Value

● When battery voltage is above 17.3V

Diagnostic Time

● 5 sec.

Fail Safe

Fuel Cut

NO

● Battery voltage is considered as 12V.

EGR Off

NO

Fuel Limit

NO

MIL

OFF

Schematic Diagram
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Signal Waveform
Яндекс.Метрика