Circuit Description
When the A/C switch is pressed on the heater and A/C control, an internal timer begins counting the amount of time the A/C switch is being depressed. The timer stops counting when the switch is released.
Conditions for Running the DTC
The diagnostic runs every 40 ms.
Conditions for Setting the DTC
The A/C switch is active for at least 15 counts.
Action Taken When the DTC Sets
The DTC is stored in memory.
Conditions for Clearing the DTC
The DTC clears after 20 fault-free ignition cycles.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: HVAC Schematics | ||||
1 | Did you perform the HVAC Systems Diagnostic System Check? | -- | ||
2 |
Does the scan tool display INACTIVE? | -- | ||
3 |
Does the A/C SWITCH parameter change state? | -- | System OK | |
4 | Does the scan tool display ACTIVE at all times? | -- | -- | |
5 |
Important: Perform the reprogramming procedure for the HVAC Control Module Replace the HVAC control module. Refer to HVAC Control Module Replacement . Did you complete the replacement? | -- | -- | |
6 |
Does the DTC reset? | -- | System OK | |
