Isuzu 1999 RODEO Workshop Manual page 926

Step
1 Was the "On–Board Diagnostic (OBD) System Check"
performed?
2 1. Ignition OFF, engine OFF.
2. Using a Digital Voltmeter (DVM), measure the
battery voltage at the battery.
Is the battery voltage greater than the specified value?
3 1. Charge the battery and clean the battery terminals.
2. Clean the battery ground cable connection if
corrosion is indicated.
Is the battery voltage greater than the specified value?
4 1. Turn OFF all the accessories.
2. Install the Tech 2.
3. Select the ignition voltage parameter on the data
list.
4. Start the engine and raise the engine speed to 2000
RPM.
Is the voltage above the specified value?
5 Replace or repair the generator (see Charging
System).
Is a malfunction present?
6 Replace the PCM.
IMPORTANT: The
programmed. Refer to On–Vehicle Service in
Powertrain Control
procedures.
And also refer to latest Service Bulletin.
Check to see if the Latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.
Is the action complete?
RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
DTC P0563 System Voltage High
Action
replacement PCM must
Module and Sensors
Value(s)
— Go to Step 2
16 V Go to Step 3
Replace
16 V
16 V Go to Step 5
— Verify repair
be
for
— Verify repair
6E1–299
Yes No
Go to OBD
System
Check
Go to Step 4
Go to Step 4
battery
Go to Step 6
—
—