Pinpoint Test R : P193E: Notes
WARNING: This page is about a different car, the 2015 Ford Escape. 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
The PCM controls the A/C compressor clutch field coil based on messages received from the BCM over the HS-CAN. The HVAC control head has an A/C request circuit that is hardwired to the BCM. When the driver requests air conditioning by pressing the A/C button on the HVAC control head the BCM receives the request and then sends a message to the PCM to activate the A/C compressor.
An internal failure of the PCM, BCM or HVAC control module; or an failure in the hardwired A/C request circuit or the HS-CAN causes the PCM to set a DTC.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P193E | A/C Clutch Request Signal | This DTC sets when the PCM does not receive the A/C enable request from the BCM. |
Possible Sources
- Network concerns
- BCM
- PCM
- HVAC control module