Isuzu 2008MY N Series Workshop Manual page 320

Step
1. Turn OFF the ignition.
2. Disconnect the VNT control module harness
connector.
3. Inspect for
connections and corrosion at the harness
12
connector of the VNT control module (pins 13,
14, 15 and 16 of E-4).
4. 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
connections and corrosion at the harness
13
connector of the ECM (pins 18 and 37 of J-
14).
4. Repair the connection(s) as necessary.
Did you find and correct the condition?
Replace the IP cluster. Refer to Instrument Panel
(IP) Cluster in Section 9E Instrumentation/Driver
14
Info.
Did you complete the replacement?
Important: Replacement
programmed and learned.
15
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement?
Replace the VNT control module.
16
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.
17
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.
18
Are there any DTCs that you have not
diagnosed?
Action
an intermittent, for
an intermittent, for
ECM must
all previously disconnected
the conditions that
Engine Control System (4HK1)
Value(s)
poor
—
poor
—
—
be
—
—
—
you
—
Yes
Go to Step 17 Go to Step 16
Go to Step 17 Go to Step 15
Go to Step 17
Go to Step 17
Go to Step 17
Go to Step 3 Go to Step 18
Go to DTC List
1A-317
No
—
—
—
System OK