Diagnostic Aids

Perform this test when instructed during QUICK TEST or if directed by other test procedures. Some vehicles may not have power steering, but PCM may be equipped with PSP switch software strategy. If a KOEO DTC P1650 or P1651 is displayed, ensure vehicle is equipped with power steering. If vehicle is not equipped with power steering, disregard DTC P1650 or P1651. This test is only intended to diagnose:

• PSP Switch
• Wiring Harness Circuits (PSP & SIG RTN)
• Powertrain Control Module (PCM)

Fig 1: Identifying PSP Switch Circuits & Connector Terminals (Escape)

Courtesy of FORD MOTOR CO.

Fig 2: Identifying PSP Switch Circuits & Connector Terminals (Focus)

Courtesy of FORD MOTOR CO.

Fig 3: Identifying PSP Switch Circuits & Connector Terminals (All Others)

Courtesy of FORD MOTOR CO.