Checking the Fuel Pump Circuit Wiring

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 Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Connect an ohmmeter between the ends of the cables to check for open-circuits.
Check the following wiring:
the green cable between terminal 4 at the control module 8-pin connector and the overheat protection thermostat
the orange cable between the overheat protection thermostat and the connector for the fuel pump (FP) terminal 2
the yellow/black cable between the connector for terminal 1 and the control module 8-pin connector terminal 1.

Fig 3: Identifying Overheat Protection Thermostat Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should read approximately 0 Ω on all measurements.

OK
FAULT NOT FOUND: Troubleshooting has been completed.
NOT OK
Refer to Checking For An Open-Circuit