Chart 21

WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

Climate Control:

Lack of Cooling (A/C)/ A/C Not Functioning
n A/C Always On
A/C Compressor Runs Continuously
A/C Does Not CUT-OFF Under WOT Conditions (Mustang only)

SYSTEM/COMPONENT	REFERENCE ( PINPOINT TEST - CNG, FLEX-FUEL & GASOLINE ) unless noted
Mustang only: A/C electrical circuits	For lack of A/C cooling or A/C not functioning: GO to X: Constant Control Relay Module (CCRM) STEP X42 (Mustang) For A/C always on: GO to X: Constant Control Relay Module (CCRM) STEP X69 (Mustang) For A/C does not CUT-OFF under WOT conditions: GO to X: Constant Control Relay Module (CCRM) STEP X67 (Mustang)
A/C System	If sent here with WACF PID indicating a fault (or YES): GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS and follow direction for KOEO DTC P0645. All others: Climate Control System - Refer to the appropriate CLIMATE CONTROL SYSTEM article.