FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
:
Car repair manuals for everyone.
Home
>>
Mercury
>>
1994
>>
Cougar/XR7 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)
>>
X180 - Check PCM
X180 - Check PCM
-
Key Off.
-
Disconnect PCM.
-
Key On, Engine Off.
-
Is
fuel pump
off with PCM disconnected?
YES --
Key Off. REPLACE PCM. RE-EVALUATE symptom.
NO --
Key Off. GO to
X181.
X181 - Check Fuel Pump (FP) Circuit For Short to Ground