Diagnostic Trouble Code (Dtc) P0562 System Voltage Low - Isuzu 1999 RODEO Workshop Manual

6E1–296 RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

DIAGNOSTIC TROUBLE CODE (DTC) P0562 SYSTEM VOLTAGE LOW

Circuit Description
The powertrain control module (PCM) monitors the
system voltage on the ignition feed terminal to the PCM. A
system voltage Diagnostic Trouble Code will set
whenever the voltage is below a calibrated value. DTC
P0562 is a type D code.
Conditions for Setting the DTC
f Ignition ON.
f System voltage is below 11.5 volts for 4 minutes.
Action Taken When the DTC Sets
f The PCM will not illuminate the malfunction indicator
lamp (MIL).
f The PCM will store as Failure Records conditions
which were present when the Diagnostic Trouble Code
was set. This information will not be stored as Freeze
Frame data.
Conditions for Clearing the DTC
f A history Diagnostic Trouble Code P0562 will clear
after 40 consecutive warm–up cycles have occurred
without a fault.
f Diagnostic Trouble Code P0562 can be cleared by
using the Scan Tool's "Clear Info" function.
Diagnostic Aids
f If the Diagnostic Trouble Code sets when an accessory
is operated, check for a poor connection or excessive
current draw.
f Check for an open circuit in the PCM main relay's
control (ground) circuit.
f Check for open circuits or shorts to ground on the
PCM's battery or ignition inputs.
f Check for a faulty PCM main relay.
D06RX061