Troubleshooting

(Table 100, contd)
Troubleshooting Test Steps
Values Results
4. Create a Short Circuit in the Harness at the Solenoid
A. Turn the keyswitch to the OFF position.
B. Disconnect the connector for the suspect solenoid.
C. Fabricate a jumper wire that is 150 mm (6 inch) long.
D. Install the wire between the two pins on the harness con-
nector for the suspect solenoid in order to create a short
circuit.
E. Turn the keyswitch to the ON position. Check for active di-
agnostic codes on the electronic service tool.
F. Remove the jumper wire from the connector for the sole-
noid valve.
Diagnostic
codes
Result: An XXXX-6 diagnostic code is active when the jumper
is installed.
Temporarily connect a replacement for the suspect valve to the
harness.
Turn the keyswitch to the ON position. Use the electronic serv-
ice tool in order to check for active diagnostic codes. Wait at
least 30 seconds in order for the codes to be displayed.
If the fault is eliminated, reconnect the suspect valve. If the
fault returns, permanently install the replacement valve. Refer
to Disassembly and Assembly for the correct procedure.
Result: A 1076-5 diagnostic code is still active with the jumper
installed.
Proceed to Test Step 5.
Result: A 1188-5 diagnostic code is still active with the jumper
installed.
Proceed to Test Step 6.
5. Create a Short Circuit at the ECM Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the P2 connector from the ECM.
C. Fabricate a jumper wire and install the jumper wire be-
tween J2:15 and J2:60.
D. Turn the keyswitch to the ON position.
E. Use the electronic service tool to check for an active 1076
diagnostic code. Wait at least 30 seconds for activation of the
diagnostic codes.
F. Turn the keyswitch to the OFF position.
G. Remove the jumper wire.
H. Reconnect the connectors.
Diagnostic
codes
Result: A 1076-6 diagnostic code is active with the jumper
installed.
The fault is in the harness between the fuel pump metering
valve connector and the P2 ECM connector.
Replace the faulty wiring. Use the electronic service tool to
clear all logged diagnostic codes and verify that the repair
eliminates the fault.
Result: The 1076-5 diagnostic code is still active with the
jumper installed.
Proceed to Test Step 10.
(continued)
216 UENR0612-07
Circuit Tests
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