DP20 - VSS Drive Cycle Test

- Warm engine to operating temperature.

- Perform the VSS Drive Cycle at least three times as outlined below:

AUTOMATIC TRANSMISSIONS:

- Place gear selector in DRIVE range.

- Obey all local traffic laws.

- Accelerate heavily to 35 mph.

- Coast down to an idle and stop the vehicle.

- Shut the Engine Off.

- After the drive cycle is completed, retrieve and record any Continuous Memory DTCs, address the DTCs in Diagnostic Subroutines. [1][2]Diagnostic Trouble Code (DTC) Charts

- If no DTCs are generated, testing is complete.

MANUAL TRANSMISSIONS:

- Shift to second from first gear.

- Obey all traffic laws.

- Accelerate moderately to 40 mph.

- Coast down to an idle and stop the vehicle.

- After the drive cycle is completed, retrieve and record any Continuous Memory DTCs, address the DTCs in Diagnostic Subroutines. [1][2]Diagnostic Trouble Code (DTC) Charts

- If no DTCs are generated, testing is complete.