Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2003 Mercury Sable, 2003 Mercury Mountaineer, 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

CMP signal provides PCM information for fuel injector synchronization. The CMP signal originates from Camshaft Position (CMP) sensor. Enter this system test only when instructed during QUICK TEST. This test is only intended to diagnose the following:

Faulty CMP Sensor
Wiring Harness Circuits (CMP, CMP/TSS GND, PWR GND, SIG RTN & VPWR)
Faulty Powertrain Control Module (PCM)

Fig 1: Identifying CMP Sensor Circuits & Connector Terminals (Econoline & Pickup 4.2L)

Courtesy of FORD MOTOR CO.

Fig 2: Identifying CMP Sensor Circuits & Connector Terminals (Explorer & Mountaineer With 104-Pin PCM)

Courtesy of FORD MOTOR CO.

Fig 3: Identifying CMP Sensor Circuits & Connector Terminals (Aviator, Expedition, Explorer & Mountaineer With 150-Pin PCM, LS 3.9L, Navigator & Thunderbird)

Courtesy of FORD MOTOR CO.

Fig 4: Identifying CMP Sensor Circuits & Connector Terminals (Focus 2.0L 2V)

Courtesy of FORD MOTOR CO.

Fig 5: Identifying CMP Sensor Circuits & Connector Terminals (Focus & Escape 2.0L 4V)

Courtesy of FORD MOTOR CO.

Fig 6: Identifying CMP Sensor Circuits & Connector Terminals (LS 3.0L)

Courtesy of FORD MOTOR CO.

Fig 7: Identifying CMP Sensor Circuits & Connector Terminals (ZX2)

Courtesy of FORD MOTOR CO.

Fig 8: Identifying CMP Sensor Circuits & Connector Terminals (All Others)

Courtesy of FORD MOTOR CO.