Symptom List:
REFRIGERANT PRESSURE RX FAILURE (ACTIVE)
VIN RX FAILURE (ACTIVE)
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be REFRIGERANT PRESSURE RX
FAILURE (ACTIVE).
When Monitored and Set Condition:
REFRIGERANT PRESSURE RX FAILURE (ACTIVE)
When Monitored: With the ignition on.
Set Condition: This DTC will set if the A/C - Heater Control Module does not receive the
Refrigerant Pressure message from the PCM for more than 20 seconds.
VIN RX FAILURE (ACTIVE)
When Monitored: With the ignition on.
Set Condition: This DTC will set if the A/C - Heater Control Module does not receive the
VIN message from the PCM for more than 5 seconds.
POSSIBLE CAUSES
CHECK FOR ADDITIONAL HVAC DTCS
CHECK FOR PCM DTCS
A/C - HEATER CONTROL MODULE
PCM - NO MESSAGE TO A/C - HEATER CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read HVAC DTCs.
Does the DRBIIIt display additional HVAC DTCs?
All
Yes → Return to the symptom list and choose the symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 2
2 Turn the ignition on.
With the DRBIIIt, check the PCM for any DTCs.
Are any DTCs present?
All
Yes → Refer to the Powertrain Diagnostic Information.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 3
222
HEATING & A/C
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