DP5 - Check VSS Signal Output to Powertrain Control Module

- Key "OFF".

- Disconnect Powertrain Control Module (PCM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Install breakout box, PCM disconnected.

- Key "ON".

- Observe voltage reading between Test Pin 3 and Test Pin 40 at breakout box while slowly rotating the drive wheels.

- The voltage should rise above 5.0 volts and fall below 1.0 volt in a regular cycle. Observe several cycles.

- Does the Vehicle Speed Sensor (VSS) output voltage rise and fall as specified while slowly rotating the drive wheels?

Yes -- Remove breakout box. Replace PCM. Reconnect VSS. Repeat DP1 to verify elimination of Diagnostic Trouble Code (DTC) or drive complaint. DP1 - Complete VSS Drive Cycle

No -- Go to DP6. DP6 - Check For Battery Voltage to VSS