Isuzu 4JA1 Workshop Manual page 386

6E-132 Engine Control System (4JH1)
Step
4 1. Test the control circuit of the glow indicator lamp
between the engine control module (ECM) (pin
40 of C-56 connector) and the IP cluster (pin 35
of B-23 connector) for a short to battery or
ignition voltage.
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
5 Repair or replace the IP cluster.
Did you complete the repair or replacement?
6 Important: Replacement
programmed.
Replace the ECM. Refer to Engine Control Module
(ECM) Replacement in this section.
Did you complete the replacement?
7 1. Reconnect all previously disconnected harness
connector(s).
2. Clear the DTCs with the scan tool.
3. Turn OFF the ignition for 30 seconds.
4. Cool down the engine as necessary (allow
engine coolant temperature to cool down at least
25°C [77°F]).
5. Turn ON the ignition, with the engine OFF.
6. Monitor the DTC Information with the scan tool.
Did the DTC fail this ignition?
8 Observe the DTC Information with the scan tool.
Are there any DTCs that you have not diagnosed?
Action
ECM must
Value(s)


be



Trouble Code (DTC)
Yes
Go to Step 7 Go to Step 6
Go to Step 7
Go to Step 7
Go to Step 2 Go to Step 8
Go to Diagnostic
List
No


System OK