Troubleshooting

(Table 109, contd)
Troubleshooting Test Steps
Values Results
6. Check the Wiring for High Resistance
A. Turn the keyswitch to the OFF position.
B. Disconnect the throttle switch. Disconnect the P1 connector.
C. Use a suitable multimeter to measure the resistance between
the following points:
· P1:55 to the signal terminal at the switch connector
· P1:77 to the ground terminal at the switch connector
Less than 5
Ohms
Result: At least one of the resistance measurements is
greater than 5 Ohms.
The fault is in the wiring between the switch connector
and the P1 connector.
Repair: Check all wiring between the throttle switch and
the ECM. Refer to the Electrical Schematic for the
application.
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: Both resistance measurements are less than 5
Ohms.
Proceed to Test Step 7.
7. Check the Wiring for a Short Circuit
A. Turn the keyswitch to the OFF position.
B. Disconnect the P1 connector from the ECM.
C. Disconnect the throttle switch.
D. Use a suitable multimeter to measure the resistance between
the following points:
· P1:55 and all other terminals on the P1 connector
· P1:77 and all terminals on the P1 connector
Greater than 1 k
Ohm
Result: At least one of the resistance measurements is
less than 1 k Ohm.
There is a short in the wiring between the throttle switch
and the P1 connector.
Repair: Check all wiring between the throttle switch and
the ECM. Refer to the Electrical Schematic for the
application.
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: All resistance measurements are greater than 1
k Ohm.
Contact the Dealer Solution Network (DSN).
i06577530
Switch Circuits - Test
(Air Filter Restriction Switch)
Use this procedure to diagnose electronic faults in
the air filter restriction switch circuit.
This procedure covers the following diagnostic code:
240 UENR0612-07
Circuit Tests
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