Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read the active DTC's.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2.
  No
  - If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
INSIDE REARVIEW MIRROR
1. Turn the ignition off.
2. Disconnect the Rearview Mirror C2 harness connector.
3. Turn the ignition on.
4. With the scan tool, read the active DTC's.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 3.
  No
  - Replace the Rearview Mirror in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(X712) MICROPHONE 1 IN (+) CIRCUIT FOR A SHORT TO GROUND

Fig 1: Checking Microphone 1 In (+) Circuit For A Short To Ground
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 (X712) Microphone 1 (+) circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the (X712) Microphone 1 circuit for short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4.
(X712) MICROPHONE 1 IN (+) CIRCUIT FOR A SHORT TO VOLTAGE

Fig 2: Checking Microphone 1 In (+) Circuit For A Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Radio C2 harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (X712) Microphone circuit.
  Is the voltage above 1.0 volt?
  
  Yes
  - Repair The (X712) Microphone Circuit For A Short To Voltage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 5.
(X712) MICROPHONE 1 IN (+) CIRCUIT FOR AN OPEN

Fig 3: Checking Microphone Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Measure the resistance of the (X712) Microphone 1 IN (+) circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the Radio in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the (X712) Microphone 1 IN (+) circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .