Diagnostic Test

CHECK FOR DTC B1604-RIGHT SOLAR SENSOR CIRCUIT LOW WITH SUN SENSOR HARNESS CONNECTOR DISCONNECTED

Fig 1: Checking Left Solar Sensor Circuit Low With Sun Sensor Harness Connector Disconnected
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Sun Sensor harness connector.
3. Turn the ignition on.
4. With the scan tool, erase HVAC DTCs.
5. Turn the ignition off, wait 10 seconds, and turn the ignition on.
6. With the scan tool, read HVAC DTCs.
  Does the scan tool display: B1604-RIGHT SOLAR SENSOR CIRCUIT LOW?
  
  Yes
  - Go To 2
  No
  - Replace the Sun Sensor in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure
CHECK (G139) SUN SENSOR NO. 2 SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 2: Checking Sun Sensor No. 2 Signal Circuit For A Short To Ground
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the A/C Heater Control C1 harness connector.
3. Measure the resistance of the (G139) Sun Sensor No. 2 Signal circuit between ground and the A/C Heater Control C1 harness connector.
  Is the resistance below 10k ohms?
  
  Yes
  - Repair the (G139) Sun Sensor No. 2 Signal circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure
  No
  - Go to step 3
CHECK (G139) SUN SENSOR NO. 2 SIGNAL CIRCUIT FOR A SHORT TO (G939) SUN SENSOR RETURN CIRCUIT

Fig 3: Checking Sun Sensor No. 2 Signal Circuit For A Short To Sun Sensor Return Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance between the (G139) Sun Sensor No. 2 Signal circuit and the (G939) Sun Sensor Return circuit in the A/C Heater Control C1 harness connector.
  Is the resistance below 10k ohms?
  
  Yes
  - Repair the (G139) Sun Sensor No. 2 Signal circuit for a short to the (G939) Sun Sensor Return circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure
  No
  - Replace the A/C Heater Control in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure