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 FOR AN ACTIVE DTC
1. With the scan tool, read the Body Control Module (BCM) DTCs and record on the repair order.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - The condition or conditions that originally set this DTC are not present at this time. 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. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE BRAKE FLUID LEVEL SWITCH
1. Turn the ignition off.
2. Disconnect the Brake Fluid Level Switch harness connector.
3. Connect a jumper wire between the (B20) Brake Fluid Level Signal circuit and the (Z420) Ground circuit at the Brake Fluid Level Switch harness connector.
4. Turn the ignition on.
5. With the scan tool, read the Brake Fluid Level data.
  Does the Brake Fluid Level display Low?
  
  Yes
  - Replace the Brake Fluid Level Switch in accordance with the Service Information. Refer to SWITCH, BRAKE FLUID LEVEL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (B20) BRAKE FLUID LEVEL SIGNAL CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the BCM C4/D harness connector.
3. Measure the resistance of the (B20) Brake Fluid Level Signal circuit between the Brake Fluid Level Switch harness connector and the BCM C4/D harness connector.
  Is the resistance above 3.0 Ohms?
  
  Yes
  - Repair the (B20) Brake Fluid Level Signal circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (Z420) GROUND CIRCUIT FOR AN OPEN
1. Measure the resistance of the (Z420) Ground circuit between the Brake Fluid Level Switch harness connector and the BCM C4/D harness connector.
  Is the resistance above 3.0 Ohms?
  
  Yes
  - Repair the open in the (Z420) Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .