Isuzu 4HL1 Workshop Manual page 158

1A-156 Engine Control System
Step
Replace the intake throttle (intake throttle DC
motor).
7
Is the action complete?
Review the DTC.
1. Certainly connect the intake throttle and
ECM connectors.
8
2. Using Tech 2, clear the DTC.
3. Perform test run and review the DTC.
Is DTC61 detected?
1. Replace the ECM.
IMPORTANT:
If necessary (for the vehicle equipped with
9
idle stop function), input the number of
startups to the replacing ECM.
Is the action complete?
Check DTC61 will not be set again.
1. Using Tech 2, clear the DTC.
10
2. Perform test run and review the DTC.
Is DTC61 detected?
Intake Throttle Valve Description
Legend
1. Throttle valve
2. ITP sensor
3. Reduction gears
4. DC motor
5. Sensor ground
Action
1
4
Value(s)
—
—
—
—
2
3
5
6
7
6. Sensor signal
7. Motor (–)
8. Sensor power
9. Motor (+)
Yes
Verify repair and
go to Step 10
Go to Step 9 Diagnostic Aids
Verify repair and
go to Step 10
Refer to
Diagnostic Aids
and go to Step 2
8
9
No
—
Refer to
—
Repair is
complete
LNW21ASF002101