Diagnostic Test

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR ACTIVE DTC
NOTE:
Verify the connection of the Rearview Mirror harness connector.
1. Turn the ignition on.
2. With the scan tool, read the active DTCs.
  Does the scan tool display: B143A-2B-MICROPHONE 1 - WIRES SHORTED TOGETHER as active?
  
  Yes
  - Go To 2
  No
  - Test complete, 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.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE INSIDE REARVIEW MIRROR
1. Turn the ignition off.
2. Disconnect the Inside Rearview Mirror harness connector.
3. Turn the ignition on.
4. With the scan tool, read the active DTCs.
  NOTE:
  B143A-13-MICROPHONE 1 - CIRCUIT OPEN should display as active as a result of this test.
  
  Does the scan tool display: B143A-2B-MICROPHONE 1 - WIRES SHORTED TOGETHER as active?
  
  Yes
  - Go To 3
  No
  - Replace the Inside Rearview Mirror in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (X712) MICROPHONE 1 IN (+) AND THE (X792) MICROPHONE 1 IN (-) CIRCUITS FOR A SHORT TOGETHER
1. Turn the ignition off.
2. Disconnect the TGW harness connector.
3. Measure the resistance between the (X712) Microphone 1 IN (+) circuit, and the (X792) Microphone 1 IN (-) circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the (X712) Microphone 1 IN (+) and the (X792) Microphone 1 IN (-) circuits for a short together.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the TGW in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .