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
  - 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.
INSIDE REARVIEW MIRROR
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 active DTCs.
  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 STANDARD PROCEDURE - BODY VERIFICATION TEST .
(X722) MICROPHONE 2 IN (+) CIRCUIT SHORTED TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Radio C2 harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (X722) Microphone 2 IN (+) circuit.
  Is the voltage above 1.0 volt?
  
  Yes
  - Repair the (X722) Microphone 2 IN (+) circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE - BODY VERIFICATION TEST .
  No
  - Go To 4
(X722) MICROPHONE 2 IN (+) CIRCUIT OPEN
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 .