Isuzu 2008MY N Series Workshop Manual page 306

Step
Important: Replacement
programmed and learned.
12
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.
13
5. Observe the PTO Remote Throttle Sensor
parameter with a scan tool while operating the
PTO throttle sensor.
Does the scan tool indicate more than the
specified value during operating the throttle?
Observe the DTC Information with a scan tool.
14
Are there any DTCs that you have not
diagnosed?
Action
ECM must
all previously disconnected
Engine Control System (4HK1)
Value(s)
be
—
4.8 volts
—
Yes
Go to Step 13
Go to Step 3 Go to Step 14
Go to DTC List
1A-303
No
—
System OK