Isuzu 1999 RODEO Workshop Manual page 1559

6E2–316
RODEO 6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS
Step
11 1. Ignition "ON".
2. Use a DVM to backprove at terminal C of EGR
valve for voltage.
Was measured voltage more than 4.8 V?
12 1. Ignition "ON".
2. Stay the EGR harness connected.
3. Check voltage by backproving at PCM B7 terminal.
Was voltage more than 4.8 V?
13 1. Locate short circuit at EGR harness between RED
to RED or GREEN, RED to YEL.
2. Replace EGR harness.
Is the action complete?
14 Replace EGR harness.
Is the action complete?
15 Replace the EGR valve.
Does DTC P1404 still fail "DTC test on the Tech 2?
16 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?
DTC P0406 – EGR High Voltage (Cont'd)
Action
replacement PCM
Refer to On-Vehicle Service in
Module and Sensors
Value(s)
more than 4.8
V
4.8 V
—
—
—
must be
for
—
Yes No
Go to Step 12 Go to Step 12
Go to Step 16 Go to Step 13
Verify repair —
Verify repair —
Go to Step 16
Verify repair
Verify repair —