Isuzu 2000 Trooper Workshop Manual page 1056

DTC P0137 –HO2S Circuit Low Voltage Bank 1 Sensor 2 (Cont'd)
Step
7 Repair the short between the high and low circuits.
Is the action complete?
8 1. Ignition "OFF."
2. Reconnect the PCM, leave HO2S 2 disconnected.
3. Ignition "ON."
Does the Tech 2 indicate Bank 1 HO2S 2 voltage near
the specified value?
9 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?
TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Action
replacement PCM
Refer to On-Vehicle Service in
Module and Sensors
Value(s)
—
425-475 mV
must be
for
—
6E–187
Yes No
Verify repair —
Refer to
Diagnostic
Aids Go to Step 9
Verify repair —