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Home >> Ford >> 1994 >> Thunderbird V8-281 4.6L SOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Pinpoint Tests >> FF - Power Steering Pressure (PSP) Switch >> FF4 - Check PSP Circuits For Short
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FF4 - Check PSP Circuits For Short



- Key Off.

- PSP switch disconnected.

- Breakout box installed, leave PCM disconnected.

- Measure resistance between Test Pin 31 and Test Pin 91 at the breakout box and chassis ground.

- Is resistance less than 10,000 ohms?

YES -- SERVICE short in harness. REMOVE breakout box. RECONNECT all components. VERIFY repair.

NO -- REPLACE PCM. REMOVE breakout box. RECONNECT all components. RERUN Quick Test. Diagnostic Subroutines (DSR) - Extracting Codes
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