(Table 88, contd)
Troubleshooting Test Steps
Values
Results
3. Create a Short Circuit at the Starting Motor Relay
A. Turn the keyswitch to the OFF position.
B. Disconnect the connector for the starting motor relay.
C. Fabricate a jumper wire that is 150 mm (6 inch) long.
D. Use the jumper wire to connect pin 1 to pin 2 on the harness
connector for the starting motor relay.
E. Turn the keyswitch to the ON position.
F. Use the electronic service tool to check for an active 677-6 diag-
nostic code.
G. Turn the keyswitch to the OFF position.
H. Remove the jumper.
Diagnostic codes
Result:
A 677-6 diagnostic code was active with
the jumper installed.
Install a replacement starting motor. Refer to Dis-
assembly and Assembly, “Electric Starting Motor -
Remove and Install”.
Use the electronic service tool to check for an ac-
tive 677-5 diagnostic code.
Confirm that the fault has been eliminated.
Result:
A 677-5 diagnostic code is still active with
the jumper installed.
Reconnect the starting motor relay and proceed
to Test Step 4.
4. Check the Wiring Between the Start Relay and the ECM for
an Open Circuit
A. Turn the keyswitch to the OFF position.
B. Disconnect the starting motor relay connector. Disconnect the
P1 connector.
C. Use a suitable multimeter to measure the resistance between
the following points:
·
P1:53 to terminal 1 on the harness connector for the start relay
·
P1:27 to terminal 2 on the harness connector for the start relay
Less than 5 Ohms
Result:
Each resistance measurement is less
than 5 Ohms.
Contact the Dealer Solution Network (DSN).
Result:
At least one of the resistance measure-
ments is greater than 5 Ohms.
There is open circuit or high resistance in the wir-
ing between the start relay connector and the P1
connector.
Check all wiring between the start relay connector
and the ECM. Refer to the Electrical Schematic
for the application.
Replace the faulty wiring.
Use the electronic service tool to clear all logged
diagnostic codes and verify that the repair elimi-
nates the fault.
5. Create an Open Circuit at the Relay
A. Turn the keyswitch to the OFF position.
B. Disconnect the starting motor relay connector.
C. Turn the keyswitch to the ON position.
D. Use the electronic service tool to check for an active 677-5 di-
agnostic code.
E. Turn the keyswitch to the OFF position.
F. Reconnect the starting motor relay connector.
Diagnostic codes
Result:
A 677-5 diagnostic code became active
with the starting motor relay disconnected.
Install a replacement starting motor. Refer to Dis-
assembly and Assembly, “Electric Starting Motor -
Remove and Install”.
Use the electronic service tool to check for an ac-
tive 677-5 diagnostic code.
Confirm that the fault has been eliminated.
Result:
A 677-6 diagnostic code is still active with
the starting motor relay disconnected.
Proceed to Test Step 6.
(continued)
UENR0612
177
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