Diagnostic Aids

Perform this test when instructed during QUICK TEST or if directed by other test procedures. This test is used to diagnose the following:

• Wiring Harness Circuits (TCIL & TCS)
• Faulty Powertrain Control Module (PCM)

Fig 1: Identifying TCIL & TCS Circuits & Connector Terminals (Econoline, Excursion, Expedition, Navigator & Pickup)

Courtesy of FORD MOTOR CO.

Fig 2: Identifying TCS Circuits & Connector Terminals (Aviator, Explorer, LS & Mountaineer)

Courtesy of FORD MOTOR CO.

Fig 3: Identifying TCIL & TCS Circuits & Connector Terminals (All Others)

Courtesy of FORD MOTOR CO.