Pinpoint Test K : The A/C (Air Conditioning) Is Inoperative: Notes

WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Automatic Climate Control System for schematic and connector information.

Normal Operation and Fault Conditions

Refer to A/C Request. Refer to: Climate Control System - System Operation and Component Description .

Possible Sources

Wiring, terminals or connectors
Communication network
Ambient Air Temperature (AAT) sensor
A/C pressure transducer
Evaporator temperature sensor
Electric cooling fan
Intake Air Temperature (IAT) / Mass Air Flow (MAF) sensor
Active grille shutters (if equipped)
FCIM

Visual Inspection and Diagnostic Pre-checks

Inspect for loose or corroded PCM and A/C clutch relay connection
Verify BJB fuses 25 (10A) and 34 (15A) are OK.