Pinpoint Test N : P193E: Notes
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. 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. When the FCIM determines it is necessary to activate the A/C compressor due to driver request or automatic climate control settings, the FCIM sends a message to the BCM over the MS-CAN, the BCM then sends a message to the PCM to activate the A/C compressor.
An internal failure of the PCM, BCM or FCIM, or a failure in the MS-CAN or 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
- FCIM