Table 90
Troubleshooting Test Steps
Values
Results
1. Inspect Electrical Connectors and Wiring
A. Check the fuses.
B. Thoroughly inspect the P1/J1 ECM connectors and thoroughly
inspect the connector for the ECM main relay. Refer to Trouble-
shooting, “Electrical Connectors - Inspect” for details.
C. Perform a 30 N (6.7 lb) pull test on each of the wires that are
associated with the main relay.
Damaged wire or
connector
Result:
A damaged wire or damaged connector
was not found. The fuses are OK.
Proceed to Test Step 2.
Result:
A damaged wire or damaged connector
was found. A fuse is blown.
Repair the damaged wire or the damaged con-
nector. Replace any blown fuses.
Use the electronic service tool to clear all logged
diagnostic codes. Verify that the repair eliminates
the fault.
2. Check for Diagnostic Codes
A. Turn the keyswitch to the OFF position.
B. Connect the electronic service tool to the diagnostic connector.
C. Turn the keyswitch to the ON position.
D. Monitor the electronic service tool for active diagnostic codes
and/or logged diagnostic codes.
Diagnostic Trouble
Codes
Result:
A 1485-7 diagnostic code is active or re-
cently logged.
Proceed to Test Step 3.
Result:
A 1485-14 or 2840-14 diagnostic code is
active or recently logged.
Ensure that the correct procedure is used to shut
down the engine. Refer to Operation and Mainte-
nance Manual, “Stopping the Engine”.
If the engine is being shut down correctly, an inter-
mittent fault may be causing the ECM to lose bat-
tery power. Refer to Troubleshooting, “Electrical
Power Supply - Test” and refer to Troubleshoot-
ing, “Electrical Connectors - Inspect”.
(continued)
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UENR0612
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