P2118

DTC P2118: Throttle Actuator Current Range/Performance Problem

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

1. Jump the SCS line with the HDS.
2. Disconnect ECM connector C (44P).




3. Measure resistance between ECM connector terminals C3 and C4.

Is there about 1.0 Ohm or less?

YES - Go to step 4.

NO - Go to step 15.

4. Disconnect the throttle body 6P connector.




5. At the throttle body side, measure resistance between throttle body 6P connector terminals No. 5 and No. 6 with the throttle fully closed.

Is there about 1.0 Ohm or less?

YES - Go to step 6.

NO - Repair short in the wires between the ECM C3 (ETCSM- line) and C4 (ETCSM+ line), then go to step 7.

6. Replace the throttle body.
7. Reconnect all connectors.
8. Turn the ignition switch ON (II).
9. Reset the ECM with the HDS.
10. Do the ECM idle learn procedure.
11. Turn the ignition switch OFF.
12. Turn the ignition switch ON (II).
13. Slowly press the accelerator pedal to the floor.
14. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P2118 is indicated, check for poor connections or loose terminals at the throttle body and the ECM, then go to STEP 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - Troubleshooting is complete.

15. Update the ECM if it does not have the latest software, or substitute a known-good ECM.
16. Turn the ignition switch OFF.
17. Turn the ignition switch ON (II).
18. Slowly press the accelerator pedal to the floor.
19. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2118 indicated?

YES - Check for poor connections or loose terminals at the throttle body and the ECM. If the ECM was updated, substitute a known-good ECM, then go to step 16. If the ECM was substituted, go to step 1.

NO - If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.