Isuzu 2000 Trooper Workshop Manual page 1109

6E–240
TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
DTC P0175 – Fuel Trim System Rich Bank 2 (Cont'd)
Step
18 Replace the PCM.
IMPORTANT: The
programmed.
Powertrain Control
procedures.
And also refer to the 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?
19 1. Perform the "Injector Balance Test."
2. If the Injector Balance Test isolates a problem,
repair as necessary (refer to Fuel Metering
System ).
Did the Injector Balance Test isolate a problem
requiring repair?
20 1. Remove and visually/physically inspect the Bank 2
HO2S 1 for silicon contamination. This will be
indicated by a powdery deposit on the portion of the
HO2S that is exposed to the exhaust stream.
2. If contamination is evident on the Bank 2 HO2S 1,
replace the contaminated sensor.
Did the sensor require replacement?
21 1. Check the TP sensor mounting screws and tighten
or replace them as necessary if they are loose or
missing.
2. If the screws are OK, replace the TP sensor.
Is the action complete?
22 Replace the MAF sensor.
Is the action complete?
Action
replacement PCM
Refer to On-Vehicle Service in
Module and Sensors
Value(s)
must be
for
—
—
—
—
—
Yes No
Verify repair —
Go to Step 20
Verify repair
Refer to
Diagnostic
Verify repair Aids
Verify repair —
Verify repair —