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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) >> X127 - Check ACCS Circuit For Short to Power
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X127 - Check ACCS Circuit For Short to Power



- Key Off.

- ACPSW and CCRM disconnected.

- Disconnect PCM. Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Install breakout box, leave PCM disconnected.

- Key On.

- Measure voltage between Test Pin 41 (ACCS) and Test Pins 51 and 103 (PWR GND).

- Key Off.

- Was voltage less than 1.0 volt?

YES -- GO to X128. X128 - Check ACCS Circuit Voltage to PCM With CCRM Connected

NO -- SERVICE short to power. REMOVE breakout box. RECONNECT all components. RE-EVALUATE symptom.
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