1. Check for continuity between ECM connector No. 2 terminal No. 1 and body ground.

Is there continuity?

YES | - | Repair short in the wire between the APP sensor and ECM connector No. 2 terminals No. 1, No. 3 or No. 5, then go to Step 18 .
NO | - | Go to Step 22 .

1. Reconnect all connectors.

1. Turn the ignition switch ON (II).

1. Reset the ECM with the HDS.

1. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES | - | If DTC P0643 is indicated, check for poor connections or loose terminals at the FRP sensor, the MAF/IAT sensor, the MAP/IAT sensor, the APP sensor 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.■

1. Update the ECM if it does not have the latest software, or substitute a known-good ECM.

1. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES | - | If DTC P0643 is indicated, check for poor connections or loose terminals at the FRP sensor, the MAF/IAT sensor, the MAP/IAT sensor, the APP sensor 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 | - | If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM. ■