Pinpoint Test L : The A/C (Air Conditioning) Is Always On - A/C (Air Conditioning) Mode Always Commanded On: Notes
Refer to Manual Climate Control System for schematic and connector information.
Normal Operation and Fault Conditions
Control System LogicREFER 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. |
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P1464 | A/C Demand Out Of Self Test Range | This DTC sets when the PCM senses an A/C request during a PCM self-test. |
Possible Sources
- Wiring, terminals or connectors
- PCM
- HVAC control module
- IPC