
Table 104
Troubleshooting Test Steps
Values
Results
1. Inspect Electrical Connectors and Wiring
A. Thoroughly inspect the terminal connections on the P1/J1
connector.
B. Thoroughly inspect the connector for the throttle 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 con-
nectors that are associated with the throttle switch.
E. Check the harness for abrasions and for pinch points from the
switch back to the ECM.
Damaged wire or
connector
Result:
A damaged wire or damaged connector was not
found.
Proceed to Test Step 2.
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 diag-
nostic codes. Verify that the repair eliminates the fault.
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 active diagnostic codes with the throttle switch in each
position. Wait at least 10 seconds with the switch in each position
for activation of the diagnostic codes.
Diagnostic Trou-
ble Codes
Result:
A 2880-4 diagnostic code is active.
Proceed to Test Step 3.
Result:
A 2880-3 diagnostic code is active.
Proceed to Test Step 4.
Result:
A 2880-2 diagnostic code is active.
Proceed to Test Step 5.
3. Create an Open Circuit at the Switch
A. Turn the keyswitch to the OFF position.
B. Disconnect the throttle switch.
C. Turn the keyswitch to the ON position.
D. Use the electronic service tool to check for an active 2880 diag-
nostic code. Wait at least 10 seconds for activation of the diagnos-
tic codes.
E. Turn the keyswitch to the OFF position.
Diagnostic codes
Result:
A 2880-3 diagnostic code is active with the
switch disconnected.
Replace the throttle switch.
Use the electronic service tool to clear all logged diag-
nostic codes and verify that the repair eliminates the
fault.
Result:
A 2880-4 diagnostic code is still active with the
switch disconnected.
Reconnect the switch and proceed to Test Step 7.
4. Create a Short at the Switch Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the throttle switch.
C. Fabricate a jumper wire and install the jumper wire between the
two harness connector terminals for the throttle switch.
D. Turn the keyswitch to the ON position.
E. Use the electronic service tool to check for an active 2880 diag-
nostic code. Wait at least 10 seconds for activation of the diagnos-
tic codes.
Diagnostic codes
Result:
A 2880-4 diagnostic code is active with the jump-
er installed.
Replace the throttle switch.
Use the electronic service tool to clear all logged diag-
nostic codes and verify that the repair eliminates the
fault.
Result:
A 2880-3 diagnostic code is still active with the
jumper installed.
Reconnect the throttle switch and proceed to Test Step 7.
(continued)
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