Isuzu 1999 RODEO Workshop Manual page 974

Step
1 Was the "On-Board Diagnostic (OBD) System Check"
performed?
2 1. Ignition is "On".
2. Install the Tech 2.
3. Start the engine at let it Idle.
4. On the Tech 2, select "DTC info".
Does the Tech 2 indicate DTC P1625 failed?
3 1. Ignition is "On".
2. Clear DTC P1625 by using the Tech 2 "Clear Info".
3. Start the engine at let it Idle.
4. On the Tech 2, select "DTC info".
Does the Tech 2 indicate DTC P1625 failed?
4 1. Check for aftermarket electronics, such as
transceiver stereos, and anti theft devices, they
may radiate EMI into the control system if they are
improperly installed. (This
sensor reading and turn on the MIL.)
2. If a problem is found, repair as necessary.
Was the problem found?
RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
DTC P1625–PCM Unexpected Reset
Action
may cause a false
Value(s) Yes
— Go to Step 2
— Go to Step 3
— Go to Step 4
— Verify repair
6E1–347
No
Go to OBD
System
Check
Go to
Diagnostic
Aids
Go to
Diagnostic
Aids
—