(Table 225, contd)
Troubleshooting Test Steps
Values Results
7. Create a Short Circuit at the Sensor Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the throttle position sensor with the -3 diagnos-
tic code.
C. Fabricate a jumper wire. Install the jumper wire between
the sensor signal terminal and the ground terminal on the har-
ness connector for the throttle position sensor.
D. Turn the keyswitch to the ON position.
E. Access the “Active Diagnostic Codes” screen on the elec-
tronic service tool. Look for an active -4 diagnostic code for
the suspect sensor.
F. Turn the keyswitch to the OFF position.
G. Remove the jumper wire.
Diagnostic codes Result: An -3 diagnostic code was active before the
jumper was installed. An -4 diagnostic code is active with
the jumper installed.
Repair: Install a replacement analog throttle position
sensor.
Use the electronic service tool to clear all logged diag-
nostic codes and verify that the repair eliminates the
fault.
Result: The -3 diagnostic code remains active with the
jumper installed.
Proceed to Test Step 8.
8. Check the Sensor Signal Wire for an Open Circuit
A. Turn the keyswitch to the OFF position.
B. Disconnect the suspect throttle position sensor. Disconnect
the P1 connector from the ECM.
C. Measure the resistance between the sensor signal terminal
on the harness connector and the appropriate sensor signal
terminal on the P1 connector.
Less than two Ohms Result: The resistance measurement is greater than
two Ohms - There is an open circuit or high resistance in
the sensor signal wire.
Repair: Repair the faulty wiring or replace the faulty
wiring.
Use the electronic service tool to clear all logged diag-
nostic codes and verify that the repair eliminates the
fault.
Result: The resistance measurement is less than two
Ohms.
Contact the Dealer Solutions Network (DSN).
(continued)
UENR4469-36 423
Circuit Tests
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