Isuzu N 2008 Series Workshop Manual page 112

Step
1. Inspect for an intermittent and for poor
connections at the harness connector of the
ECT sensor (pins 1 and 2 of E25).
11
2. Repair the connection(s) as necessary.
Did you find and correct the condition?
1. Turn OFF the ignition.
2. Disconnect the ECM harness connector.
3. Inspect for an intermittent and for poor
connections at the harness connector of the
12
ECM (pins 84 and 109 of E12).
4. Repair the connection(s) as necessary.
Did you find and correct the condition?
Replace the ECT sensor. Refer to ECT Sensor in
Section 1C Engine Cooling.
13
Did you complete the replacement?
Important: Replacement
programmed and learned.
14
Replace the ECM. Refer to ECM Replacement.
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.
15
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.
16
Are there any DTCs that you have not diagnosed?
Action
ECM must
all previously disconnected
the conditions that
Engine Control System (4JJ1)
Value(s)
—
—
—
be
—
—
you
—
Yes
Go to Step 15 Go to Step 13
Go to Step 15 Go to Step 14
Go to Step 15
Go to Step 15
Go to Step 3 Go to Step 16
Go to DTC List
1A-109
No
—
—
System OK