Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IF DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, read HVAC DTC's.
  Is this DTC active?
  
  Yes
  - Go To 3.
  No
  - Go To 2.
PERFORM HVAC ACTUATOR CALIBRATION TEST
1. With the scan tool, perform the HVAC Actuator Calibration Test.
  Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test?
  
  Yes
  - Go To 3.
  No
  - Go To 6.
CHECK THE MODE DOOR 2 ACTUATOR

Fig 1: Checking Mode Door 2 Actuator
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off to the lock position.
2. Disconnect the A/C Heater Control C1 harness connector.
3. Measure the resistance between the (C801) Mode Door 2 Driver circuit and the (C807) Common Door Driver circuit.
  Is the resistance 38.0 Ohms (± 5.0 Ohms)?
  
  Yes
  - Replace and program the A/C Heater Control in accordance with the Service Information.
  - Perform HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Go To 4.
CHECK THE (C801) MODE DOOR 2 DRIVER CIRCUIT FOR AN OPEN

Fig 2: Checking Mode Door 2 Driver Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off to the lock position.
2. Disconnect the Mode Door 2 (Defrost/Floor) Actuator harness connector.
3. Measure the resistance of the (C801) Mode Door 2 Driver circuit between the A/C Heater Control C1 harness connector and the Mode Door 2 (Defrost/Floor) Actuator harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (C801) Mode Door 2 Driver circuit for an open.
  - Perform HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Go To 5.
CHECK THE (C807) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN

Fig 3: Checking Common Door Driver Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (C807) Common Door Driver 2 circuit between the A/C Heater Control C1 harness connector and the Mode Door 2 (Defrost/Floor) Actuator harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (C807) Common Door Driver 2 circuit for an open.
  - Perform HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Replace the Blend Door (Driver) Actuator in accordance with the Service Information.
  - Perform HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set.
3. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
4. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, partially broken wires.
5. Check the connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
6. Wiggle the wiring and connectors while checking for shorted and open circuits.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform HVAC VERIFICATION TEST. Refer to HVAC VERIFICATION TEST .
  No
  - Test complete.