Checking Components And Wiring

Check the signal cable between engine control module (ECM) terminal #B46 (#C46) and leak diagnostic unit terminal #3. Check for a short-circuit to supply voltage.

Remedy as necessary.

Other information: 

• see CONNECTING THE BREAKOUT BOX
• see SIGNAL SPECIFICATION
• see COMPONENT SPECIFICATIONS
• see LEAK DIAGNOSTIC PUMP
• see CONTENTS

Fig 1: Identifying Leak Diagnostic Unit Connector Terminals

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Volvo Leak Detection Pump (Leak Diagnostic Unit)

Courtesy of VOLVO CARS CORPORATION

• Continue 

  Refer to VERIFICATION