Isuzu 2000 Trooper Workshop Manual page 1359

6E–490
TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
DTC P1640 – Driver-1-Output Circuit Fault (ODM) (Cont'd)
Step
13 1. Connect the PCM.
2. Start the engine and let it idle.
3. Backprobe the affected terminal at the PCM with a
DVM.
Was the voltage equal to the specified value?
14 1. Run the engine at idle.
2. Check for battery voltage at the fuse for the affected
circuit.
Was battery voltage available at the fuse?
15 Replace the PCM.
IMPORTANT: The
programmed.
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?
Action
replacement PCM
Refer to On-Vehicle Service in
Module and Sensors
Value(s)
+B
—
must be
for
—
Yes No
Go to Step 15 Go to Step 14
Go to Step 10 Go to Step 9
Verify repair —