Isuzu 4HL1 Workshop Manual page 199

Step
Review the DTC.
1. Certainly connect the SCV and ECM
connectors.
9
2. Using Tech 2, clear the DTC.
3. Perform test run and review the DTC.
Is DTC217 detected?
1. Replace the ECM.
IMPORTANT:
If necessary (for the vehicle equipped with
10
idle stop function), input the number of
startups to the replacing ECM.
Is the action complete?
Check DTC217 will not be set again.
1. Using Tech 2, clear the DTC.
11
2. Perform test run and review the DTC.
Is DTC217 detected?
SCV Description
1
7
Legend
1. FT sensor signal
2. FT sensor ground
3. FT sensor
4. Camshaft
Action
2
3
5
6
Engine Control System 1A-197
Value(s) Yes
—
Go to Step 10
—
Verify repair and
go to Step 11
—
Refer to
Diagnostic Aids
and go to Step 2
5. SCV
6. SCV (HI)
7. SCV (LO)
No
Refer to
Diagnostic Aids
—
Repair is
complete
4
LNW21ASF002601