Isuzu 4HL1 Workshop Manual page 164

1A-162 Engine Control System
Step
Review the DTC.
1. Certainly connect the clutch switch and
VIM connectors.
13
1. Using Tech 2, clear the DTC.
1. Perform test run and review the DTC.
Is DTC81 detected?
1. Replace the VIM.
IMPORTANT:
If necessary (for the vehicle equipped with
14
idle stop function), input the number of
startups to the replacing VIM.
Is the action complete?
Check DTC81 will not be set again.
1. Using Tech 2, clear the DTC.
15
2. Perform test run and review the DTC.
Is DTC81 detected?
Action Value(s) Yes
—
Go to Step 14
—
Verify repair and
go to Step 15
—
Refer to
Diagnostic Aids
and go to Step 2
No
Refer to
Diagnostic Aids
—
Repair is
complete