(Table 65, contd)
Troubleshooting Test Steps
Values
Results
4. Re-Flash the ECM
A. Ensure that the correct rating of flash file for the engine is
installed.
B. Ensure that the latest software is installed on the ECM. Refer to
Troubleshooting, “Flash Programming”.
C. Turn the keyswitch to the ON position.
D. Use the electronic service tool to check for active diagnostic
codes.
E. Turn the keyswitch to the OFF position.
Diagnostic
codes
Result:
The diagnostic code is no longer active.
Use the electronic service tool to clear all logged diagnostic
codes.
Return the engine to service.
Result:
The diagnostic code is still active.
Proceed to Test Step 5.
5. Check if a Replacement ECM Eliminates the Fault
A. Contact the Dealer Solution Network (DSN).
B. If the Dealer Solution Network (DSN) recommends the use of a
replacement ECM, install a replacement ECM. Refer to Trouble-
shooting, “Replacing the ECM”.
C. Use the electronic service tool to recheck the system for active
diagnostic codes.
Diagnostic
codes
Result:
There are no active diagnostic codes with the re-
placement ECM.
Reconnect the suspect ECM. If the fault returns with the sus-
pect ECM, replace the ECM.
Use the electronic service tool in order to clear all logged di-
agnostic codes and then verify that the repair eliminates the
fault.
Result:
The diagnostic code is still present with the replace-
ment ECM.
Contact the Dealer Solution Network (DSN).
i05915658
Electrical
Power
Supply
-
Test
This procedure tests that the correct voltage is being
supplied to the Electronic Control Module (ECM).
This procedure covers the following codes:
UENR0612
127
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