Test DP - Vehicle Speed Sensor (VSS): Notes

NOTE: Perform this test when Code 29 is displayed during QUICK TESTS or when directed here by TEST TC.

NOTE: This TEST is intended to diagnose the following:

• VSS harness circuits
• Vehicle Speed Sensor (VSS)
• ECA

Fig 1: Vehicle Speed Sensor Circuit

TEST PIN WIRE COLOR IDENTIFICATION

Application		Wire Color
Pin 3, VSS DIF (+)
3.8L SC PFI & 3.8L RWD PFI		Dark Green/White
All Others		Dark Green/White
Pin 4, VSS DIF (-)
3.8L SC PFI & 3.8L RWD PFI		Black/White
All Others		Orange/Yellow