Pinpoint Test K : The A/C (Air Conditioning) Is Inoperative: Notes
WARNING: This page is about a different car, the 2015 Ford Fiesta. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Manual Climate Control System for schematic and connector information.
Normal Operation and Fault Conditions
Control System Logic REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description .
Diagnostic Trouble Code (DTC) Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| 5-2 | A/C Select Drive Circuit/Performance | This DTC sets when any of the following occur during a HVAC control module self-test: The module senses ground on the A/C request circuit when the circuit is not grounded by the HVAC control module, indicating a short directly to ground. The module senses voltage on the A/C request circuit when the circuit is grounded by the HVAC control module, indicating a short directly to voltage. The module senses no voltage on the A/C request circuit when the relay is not grounded by the HVAC control module, indicating an open. |
Possible Sources
- Wiring, terminals or connectors
- A/C pressure transducer
- PCM
- HVAC control module
- IPC
- Evaporator temperature sensor
Visual Inspection and Diagnostic Pre-checks
- Inspect CJB fuse 12 (7.5A).
- Inspect CJB fuse 21 (7.5A).
- Inspect BJB fuse 24 (10A).
- Inspect BJB fuse 30 (10A).
- Inspect the A/C clutch relay.