Troubleshooting

Table 107
Troubleshooting Test Steps
Values Results
1. Inspect Electrical Connectors and Wiring
A. Thoroughly inspect the terminal connections on the P2/J2
connector.
B. Thoroughly inspect the connector for the oil pressure
switch.
C. Refer to Troubleshooting, “Electrical Connectors -
Inspect”.
D. Perform a 30 N (6.7 lb) pull test on each of the wires in the
connectors that are associated with the oil pressure switch.
E. Check the harness for abrasions and for pinch points from
the oil pressure switch back to the ECM.
Damaged wire
or connector
Result: A damaged wire or damaged connector was found.
Repair the damaged wire or the damaged connector.
Use the electronic service tool to clear all logged diagnostic co-
des. Verify that the repair eliminates the fault.
Result: All connectors, pins, and sockets are correctly con-
nected and/or inserted and the harness is free of corrosion, of
abrasion or of pinch points.
Proceed to Test Step 2.
2. Check for Active or Recently Logged 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. Do not start the
engine.
D. Check for any active or recently logged diagnostic codes.
Wait at least 10 seconds for activation of the diagnostic
codes.
Diagnostic
codes
Result: A 100-17 diagnostic code is recently logged.
This diagnostic code indicates that the oil pressure is low, but
can also be caused by a short circuit condition in the oil pres-
sure switch circuit.
Check for engine oil pressure problems before returning to this
procedure. refer to Troubleshooting, “Oil Pressure Is Low”.
If the fault is still present, proceed to Test Step 3.
Result: A 100-2 diagnostic code is not active. A 100-17 diag-
nostic code is not recently logged.
An intermittent 100-2 diagnostic code can be caused by turn-
ing the keyswitch to the ON position after the engine has re-
cently been stopped or an intermittent fault may exist.
Refer to Troubleshooting, “Electrical Connectors - Inspect” in
order to identify intermittent faults.
Result: A 100-2 diagnostic code is active.
Proceed to Test Step 5.
3. Create an Open Circuit at the Switch Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the harness connector for the oil pressure
switch.
C. Turn the keyswitch to the ON position. Do not start the
engine.
D. Use the electronic service tool to check for an active 100-2
diagnostic code. Wait at least 10 seconds for activation of the
diagnostic code.
Diagnostic
codes
Result: A 100-2 diagnostic code is active with the switch
disconnected.
Replace the oil pressure switch. Refer to Disassembly and As-
sembly, “Engine Oil Pressure Switch - Remove and Install”.
Use the electronic service tool to clear all logged diagnostic co-
des and verify that the repair eliminates the fault.
Result: A 100-2 diagnostic code is not active with the oil pres-
sure switch disconnected.
Reconnect the harness connector for the oil pressure switch
and proceed to Test Step 4.
(continued)
UENR0612-07 233
Circuit Tests
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