Diagnostic Aids

Perform this test when directed by QUICK TEST. This system test is intended to diagnose:

• Vehicle Speed Sensor (VSS)
• Transfer Case Speed Sensor (TCSS)
• VSS Wiring Harness Circuits (VSS+ & VSS-)
• Wiring Harness Circuits (TCSS & SIG RTN)
• Powertrain Control Module (PCM)

Fig 1: Identifying TCSS Circuits & Connector Terminals (Escape 2.0L - M/T)

Courtesy of FORD MOTOR CO.

Fig 2: Identifying VSS Circuits & Connector Terminals (All Others)

Courtesy of FORD MOTOR CO.