Checking communication with the Volvo Scan Tool (ST), continued

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Ignition Switch ON Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition on.

Fig 2: Identifying 62-Pin Connector
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Scan Tool
Courtesy of VOLVO CARS OF NORTH AMERICA.
- Try to establish communication with the Motronic 4.4 engine control module (ECM).

The voltage should oscillate rapidly between 8.6 V and 0 V when the Volvo Scan Tool (ST) tries to establish contact.

OK
Refer to Replacing adapter box
NOT OK
Refer to Replacing Volvo Scan Tool (ST)