Checking the signal cable

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

Air conditioning (A/C) pressure sensor connector disconnected.
Connect an ohmmeter between connector terminal 2 for the air conditioning (A/C) pressure sensor (control module side) and the ground terminal.

Fig 2: Identifying Knock Sensor (KS) Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohmmeter
Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should read 300-400 kΩ.

OK
Refer to Checking the ground lead
NOT OK
Refer to Checking the signal cable

Check the cable between connector terminal 2 for the air conditioning (A/C) pressure sensor (control module side) and engine control module (ECM) terminal 14 for a short-circuit to ground according to Short-circuit to ground, permanent faults .

Remedy as necessary.

Fig 1: Identifying EMS2000

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Knock Sensor (KS) Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Continue
Refer to Verification