Isuzu N 2008 Series Workshop Manual page 108

Step
1. Test each sensor circuit between the ECM
(pins 84 and 109 of E12) and the ECT sensor
(pins 1 and 2 of E25) for high resistance.
4
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
Replace the ECT sensor. Refer to ECT Sensor in
Section 1C Engine Cooling.
5
Did you complete the replacement?
1. Reconnect
harness connector(s).
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 30 seconds.
4. Start the engine.
6
5. Operate the vehicle within the Conditions for
Running the DTC. You may also operate the
vehicle within
observed from the Freeze Frame/ Failure
Records.
Did the DTC fail this ignition?
Observe the DTC Information with a scan tool.
7
Are there any DTCs that you have not diagnosed?
Action
all previously disconnected
the conditions that
Engine Control System (4JJ1)
Value(s)
—
—
—
you
—
Yes
Go to Step 6 Go to Step 5
Go to Step 6
Go to Step 2 Go to Step 7
Go to DTC List
1A-105
No
—
System OK