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.

TEST FOR INTERMITTENT CONDITION
NOTE:
Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.
1. Turn the ignition on.
  NOTE:
  Make sure the battery voltage is between 10.0 and 16.0 volts.
2. With the scan tool, read the module status.
  NOTE:
  Check the BCM for any active CAN hardware DTCs, perform DTC before proceeding.
  
  Does the scan tool indicate that the module is active on the bus?
  
  Yes
  - The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To Step 2
CHECK THE (A938) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT

Fig 1: Checking Fused B(+) Circuit For An Open Or Short
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the A/C Heater Module harness connectors.
3. Using a 12-volt test light connected to ground, check the (A938) Fused B(+) circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To Step 3
  No
  - Repair the open or short in the (A938) Fused B(+) circuit.
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (Z906) GROUND CIRCUIT FOR AN OPEN

Fig 2: Checking Ground Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Using a 12-volt test light connected to 12 volts check the (Z906) Ground circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To Step 4
  No
  - Repair the open in the (Z906) Ground circuit.
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (F925) FUSED IGNITION RUN RELAY OUTPUT CIRCUIT FOR AN OPEN OR SHORT

Fig 3: Checking Fused Ignition Switch Output (Run) Circuit For An Open Or Short
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition on.
2. Using a 12-volt test light connected to ground, check the (F925) Fused Ignition Run Relay Output circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To Step 5
  No
  - Repair the open or short in the (F925) Fused Ignition Run Relay Output circuit.
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (D101) AND (D102) CAN IHS BUS (125K) CIRCUIT FOR AN OPEN

Fig 4: Checking CAN IHS BUS (125K) Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Front CAN IHS Star Connector C4 harness connector.
3. Measure the resistance of the (D102) CAN IHS Bus (-) (125K) circuit between the Front CAN IHS Star Connector C4 harness connector and the A/C Heater harness connector.
4. Measure the resistance of the (D101) CAN IHS Bus (+) (125K) circuit between the Front CAN IHS Star Connector C4 harness connector and the A/C Heater harness connector.
  Are the resistances below 5.0 Ohms?
  
  Yes
  - Replace the A/C Heater Module in accordance with the Service Information. (Refer to MODULE, HVAC - Removal).
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the open in the (D101) or (D102) CAN IHS Bus (125K) circuit. Inspect the connector for damage.
  - Perform the HVAC VERIFICATION TEST. Refer to STANDARD PROCEDURE .