
Table 60
Troubleshooting Test Steps
Values
Results
1. Diagnostic Codes
A. Establish communication between the electronic service
tool and the Electronic Control Module (ECM). Refer to Trou-
bleshooting, “Electronic Service Tools”, if necessary.
B. Use the electronic service tool to check for active diagnostic
codes.
Diagnostic
codes
Result:
There are active or logged codes.
Troubleshoot any codes before continuing with this procedure.
Refer to Troubleshooting, “Diagnostic Trouble Codes”.
Result:
There are no active or logged codes.
Proceed to Test Step 2.
2. Electrical Connectors
A. Check all electrical connectors for damage. Refer to Trou-
bleshooting, “Electrical Connectors - Inspect”.
B. Make sure that all the connector seals are in place and that
the connectors have been correctly installed.
Electrical
connectors
Result:
An electrical connector is damaged.
Repair the electrical connector or replace the electrical
connector.
Result:
A connector seal is displaced or missing or an electri-
cal connector is not correctly installed.
Repair the electrical connector or replace the electrical
connector.
Result:
All electrical connectors are OK.
Proceed to Test Step 3.
3. ECM Connection
A. Check that the P2/J2 and P1/J1 connectors are correctly
installed.
Note:
If a fault is suspected with the ECM power or ground
connections, refer to Troubleshooting, “Electrical Power Sup-
ply - Test”.
ECM connection
Result:
An ECM connector is not correctly installed.
Repair the electrical connector or replace the electrical
connector.
Result:
Both ECM connectors are correctly installed.
Proceed to Test Step 4.
(continued)
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UENR0612
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