P0563 System Voltage High - Isuzu 2000 Trooper Workshop Manual

Diagnostic Trouble Code (DTC) P0563 System Voltage High
Circuit Description
The powertrain control module (PCM) monitors the
system voltage on the ignition feed terminals to the PCM.
A system voltage DTC will set whenever the voltage is
above a calibrated value.
Conditions for Setting the DTC
D Ignition "ON."
D System voltage is above 16 volts for 15 minutes.
Action Taken When the DTC Sets
D The PCM will not illuminate the malfunction indicator
lamp (MIL).
D The PCM will store as Failure Records only conditions
which were present when the DTC was set. This
information will not be stored as Freeze Frame data.
TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Conditions for Clearing the MIL/DTC
D A history DTC P0563 will clear after 40 consecutive
warm-up cycles have occurred without a fault.
D DTC P0563 can be cleared by using the Tech 2 "Clear
Info" function or by disconnecting the PCM battery
feed.
Diagnostic Aids
If the DTC sets when an accessory is operated, check for
a poor connection or excessive current draw.
6E–363
D06RY00073