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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 >> X - Constant Control Relay Module (CCRM) >> X25 - FC/LFC Circuit Fault Isolation Check
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X25 - FC/LFC Circuit Fault Isolation Check



- Key Off.

- Breakout box installed, PCM disconnected.

- Reconnect CCRM.

- Key On, Engine Off.

- Jumper Test Pin 68 to Test Pin 77 (PWR GND) at the breakout box.

- Does fan continue to run?

YES -- REPLACE CCRM. REMOVE breakout box. RECONNECT all components. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes

NO -- REPLACE PCM. REMOVE breakout box. RECONNECT all components. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes
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