This site https://www.volvoclub.org.uk/faq/Eng...eratureSensors gives instructions for testing the ECTS using a voltmeter on the ECU. It says "connect a voltmeter across LH ECU terminals 13 and 5 (ground) for Bosch LH 2.4 systems or terminals 2 and 5 (ground) for LH 2.2 systems. This unit is in the passenger side footwell, under the plastic cover. Remove the cover of the large electrical connector to access the backs of the pins for the test."

I am getting conflicting information from various sites about the location of the ECU. Some say the driiver's side. Others say the passenger side. Where is the ECU on the 940 Turbo?

 

Well, in the UK, like England and what not, the ECU would be on driver's side, right side; in the North America it is on the passenger side, right side... Their steering wheels are on the right. So, PASSENGER FOOT WELL.

 

I appreciate your response, but the information you provided still conflicts. You said "in the UK, like England and what not, the ECU would be on driver's side, right side". But the link I provided, which was written in the UK, says "This unit is in the passenger side footwell", which in the UK would be the left side, as you said.

I do not need to know which side the ECU would be on in the UK. If it is on the passenger side, which is the right side, in California, that's all I need to know. Please confirm.

 

You are right!
Anyway, it's in the RIGHT side footwell, easy to access.

 

more specifically, its directly forward of the right front door lower hinge. its the side panel you need to remove, but you have to remove the underdash kick panel to get the side panel out. I seem to remember having to pull off the rubber door molding in the area of said side panel.

 

I found the ECU exactly where you said. Thanks.