Checking Components And Wiring

Check the microphone signal's cable on the control module's connector A for short-circuit to ground.

Check between:

• #19 (#19) and #18 (#18).
• #19 (#19) and #6 (#6).

If no malfunction was found on the cable, try replacing the handset.

Remedy as necessary.

Other information: 

• see CONNECTING THE BREAKOUT BOX
• see SIGNAL SPECIFICATION
• see LOCATION OF COMPONENTS
• see PHONE MODULE (PHM), REPLACING
• see HANDSET, REPLACING
• see CONTENTS

Fig 2: Identifying Connector (F) Terminals

Courtesy of VOLVO CARS CORPORATION

Fig 3: Identifying Ohm Meter

Courtesy of VOLVO CARS CORPORATION

Refer to VERIFICATION