Troubleshooting

(Table 100, contd)
Troubleshooting Test Steps
Values Results
6. Measure the Voltage at the Wastegate Regulator
Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the wastegate regulator.
C. Turn the keyswitch to the ON position.
D. Use a multimeter to measure the voltage between terminal
1 on the harness connector for the wastegate regulator and a
suitable ground.
10 V to 14 V Result: The measured voltage is not within the expected
range.
Check the fuse. If the fuse is blown, there is a short circuit in
the switched battery supply to the wastegate regulator
connector.
If the fuse is not blown, there is an open circuit in the switched
battery supply to the wastegate regulator connector.
Repair the faulty wiring or 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 measured voltage is within the expected range.
Proceed to Test Step 8.
7. Check the Wastegate Regulator Return Wire for an
Open Circuit
A. Turn the keyswitch to the OFF position.
B. Disconnect the wastegate regulator and the P2 connector.
C. Use a suitable multimeter to measure the resistance be-
tween P2:4 and terminal 2 on the harness connector for the
wastegate regulator.
Diagnostic
codes
Result: The measured resistance is greater than 5 Ohms.
The fault is in the wiring between the wastegate regulator 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 measured resistance is less than 5 Ohms.
Proceed to Test Step 10.
8. Create an Open Circuit at the Solenoid
A. Turn the keyswitch to the OFF position.
B. Disconnect the connector for the suspect solenoid valve.
C. Turn the keyswitch to the ON position. Check for active di-
agnostic codes on the electronic service tool. Wait at least 30
seconds for activation of the diagnostic codes.
D. Turn the keyswitch to the OFF position.
Diagnostic
codes
Result: An XXXX-5 diagnostic code is active with the valve
disconnected.
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: An XXXX-6 diagnostic code is still active with the valve
disconnected.
Proceed to Test Step 9.
(continued)
UENR0612-07 217
Circuit Tests
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