Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IF THE DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, read HVAC DTCs.
  Is this DTC active?
  
  Yes
  - Go To 2
  No
  - Go To 6
CHECK THE (L24) AUTO HEADLAMPS SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off to the lock position.
2. Disconnect the A/C Heater Module C1 harness connector.
3. Disconnect the Sun Sensor harness connector.
4. Ignition on, engine not running.
5. Measure the voltage of the (L24) Auto Headlamps Signal circuit.
  Is there any voltage present?
  
  Yes
  - Repair the (L24) Auto Headlamps Signal circuit for a short to voltage.
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (L24) AUTO HEADLAMPS SIGNAL CIRCUIT FOR AN OPEN
1. Turn the ignition off to the lock position.
2. Measure the resistance of the (L24) Auto Headlamps Signal circuit between the A/C Heater Module C1 harness connector and the Sun Sensor harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (L24) Auto Headlamps Signal circuit for an open.
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (G939) SUN SENSOR RETURN CIRCUIT FOR AN OPEN
1. Measure the resistance of the (G939) Sun Sensor Return circuit between the A/C Heater Module C1 harness connector and the Sun Sensor harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the (G939) Sun Sensor Return circuit for an open.
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE SUN SENSOR AND A/C HEATER MODULE
1. Replace the Sun Sensor in accordance with the Service Information.
2. Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  Did this DTC reset while performing the HVAC Verification Test?
  
  Yes
  - Replace and program the A/C Heater Module in accordance with the Service Information. Refer to MODULE, HVAC .
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete.
CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set.
3. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
4. Wiggle the wiring and connectors while checking for shorted and open circuits.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete.