Diagnostic Test

CHECK FOR ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read the active DTCs.
  Does the scan tool display this DTC 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.
INSIDE REARVIEW MIRROR

Fig 1: Inside Rearview Mirror Harness Connector End View
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Inside Rearview Mirror C2 harness connector.
3. Turn the ignition on.
4. With the scan tool, read the DTCs.
  Does the scan tool display this DTC 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 - BODY VERIFICATION TEST .
(X722) MICROPHONE 2 IN (+) CIRCUIT SHORTED TO GROUND

Fig 2: Measuring Resistance Between Ground & Microphone 2 IN (+) Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Radio C2 harness connector.
3. Measure the resistance between ground and the (X722) Microphone 2 IN (+) circuit.
  Is the resistance below 10K ohms?
  
  Yes
  - Repair the (X722) Microphone 2 IN (+) circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE - BODY VERIFICATION TEST .
  No
  - Go To 4
(X722) MICROPHONE 2 IN (+) CIRCUIT SHORTED TO VOLTAGE

Fig 3: Measuring Voltage Between Microphone 2 IN (+) Circuit & Ground
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition on.
2. Measure the voltage between the (X722) Microphone 2 IN (+) circuit and ground.
  Is the voltage above 1.0 volt?
  
  Yes
  - Repair the short to voltage in the (X722) Microphone 2 IN (+) circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE - BODY VERIFICATION TEST .
  No
  - Go To 5
(X722) MICROPHONE 2 IN (+) CIRCUIT OPEN

Fig 4: Measuring Resistance Of Microphone 2 IN (+) Circuit Between Radio C2 Connector & Inside Rearview Mirror Connector
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Measure the resistance of the (X722) Microphone 2 IN (+) circuit between the Radio C2 connector and the Inside Rearview Mirror connector.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Replace the Radio in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE - BODY VERIFICATION TEST .
  No
  - Repair the (X722) Microphone 2 IN (+) circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE - BODY VERIFICATION TEST .