Check for continuity between ECM connector No. 1 terminal No. 54 and body ground. Is there continuity?
YES | - | Go to Step 29 .
NO | - | Repair open in the wire between the VSS and ECM connector No. 1 terminal No. 54, then go to Step 24 .
Turn the ignition switch OFF. Replace the VSS. Reconnect all connectors. Turn the ignition switch ON (II). Reset the ECM with the HDS. Test-drive under these conditions: Transmission in 3rd gear Engine speed at 2,000 rpm (min −1 ) or more Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated?
YES | - | If DTC P0502 is indicated, check for poor connections or loose terminals at the VSS 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.■
Update the ECM if it does not have the latest software, or substitute a known-good ECM. Test-drive under these conditions: Transmission in 3rd gear Engine speed at 2,000 rpm (min −1 ) or more Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated?
YES | - | If DTC P0502 is indicated, check for poor connections or loose terminals at the VSS 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. ■