2000 v70 brake pedal fault

brickhead · Post by **brickhead** » 28 May 2014, 09:12

Hello all. My '00 v70r has a fault for faulty brake pedal sensor. Ecm 9400 fault. I want to replace my brake pedal sensor with new one i have. Where is the brake pedal sensor located?

thank you

Post by **jblackburn** » 28 May 2014, 09:17

Remove the kick panel under the dash, and then look directly above the brake pedal. It's attached to a metal bracket the presses the sensor against the shaft of the brake pedal.

Gently wiggle it loose from the bracket. You'll have to gently pry the tabs on the plug loose with a flathead screwdriver.

Sometimes the contacts inside are just corroded up and can be fixed with a small strip of high-grit sandpaper.

Once you install the new one, the switch is slightly adjustable so that you can make sure the brake lights come on with a very slight press of the pedal.

Post by **precopster** » 28 May 2014, 11:33

Brake pedal position sensor is actually located on the booster externally and has a 2 pin connector.
To remove pump the pedal to get rid of vacuum with engine off to avoid sucking the o ring back into the booster (ask me how I know) and then clean around the base of the switch with a tooth brush to reveal the steel spring clip. Once clean flick the steel clip away and pull out the sensor.

If you have a new one pop it in making sure the o ring is seated correctly.

Post by **jblackburn** » 28 May 2014, 20:43

precopster wrote:Brake pedal position sensor is actually located on the booster externally and has a 2 pin connector.
To remove pump the pedal to get rid of vacuum with engine off to avoid sucking the o ring back into the booster (ask me how I know) and then clean around the base of the switch with a tooth brush to reveal the steel spring clip. Once clean flick the steel clip away and pull out the sensor.

If you have a new one pop it in making sure the o ring is seated correctly.

We talking about this guy?

Or did that change on our North American 2001 (P2) models?

Post by **precopster** » 29 May 2014, 06:54

That's a switch mate

I attached the Vida faultfinding info for ECM-9400 on a 1999 V70R in PDF format
Actually for a signal missing fault the brake switch can be at fault. For signal high, signal low or signal too high the sensor can be the culprit.

A sensor has a variable output just like this one: They're actually repairable with patience and a soldering iron. There's a great write-up on Swedespeed on the procedure. When faulty on an ETM car they light up the ETS Part number 9441116

: Bpps.JPG (25.06 KiB) Viewed 3684 times

Post by **jimmy57** » 29 May 2014, 07:16

jblackburn wrote:
precopster wrote:Brake pedal position sensor is actually located on the booster externally and has a 2 pin connector.
To remove pump the pedal to get rid of vacuum with engine off to avoid sucking the o ring back into the booster (ask me how I know) and then clean around the base of the switch with a tooth brush to reveal the steel spring clip. Once clean flick the steel clip away and pull out the sensor.

If you have a new one pop it in making sure the o ring is seated correctly.
We talking about this guy?

Or did that change on our North American 2001 (P2) models?

The 99 on with ECM operated cruise through the ETM or ETA don't use vacuum pump or have the second brake switch with vacuum dump as backup. The back up cruise cancel for brake light fault is the brake pedal travel sensor on booster on all of them now.

Post by **precopster** » 29 May 2014, 07:37

The one jblackburn pictured is the main brake switch. This is fitted to all P80 cars. The cruise cancel switch on pre 99 cars is slimmer

Post by **jimmy57** » 29 May 2014, 10:32

And the cruise specific switch on the 98 and down (through 2004 for S40/V40 4 cylinder Nedcar version) will have the vacuum hose attachment also.

Post by **shiloh51933** » 27 Oct 2016, 10:56

precopster wrote:That's a switch mate

I attached the Vida faultfinding info for ECM-9400 on a 1999 V70R in PDF format
Actually for a signal missing fault the brake switch can be at fault. For signal high, signal low or signal too high the sensor can be the culprit.

A sensor has a variable output just like this one: They're actually repairable with patience and a soldering iron. There's a great write-up on Swedespeed on the procedure. When faulty on an ETM car they light up the ETS Part number 9441116

Bpps.JPG

I actually just replaced this sensor on my 2000 V70XCse, my cruise control didn't work and more importantly was the surging when stepping on the throttle to accelerate at hwy speeds especially. The surging felt like I had an open in the air charge tubing, like a rip in the rubber air charge tubing or like the air charge tubing popped off slightly somewhere.
I was also having a slight clunk coming from gear box when stepping on brake at parking lot speeds, like it was taking a little bit longer to downshift then a light clunk. From what I can remember reading regarding this issue is that the brake pedal position sensor is used by all the modules involved in shifting points when downshifting. Somebody please correct me if I'm wrong...

Post by **abscate** » 04 Jan 2023, 10:04

Update on part 9441116

It’s listed as STC only but my 1999s fleet of 5 with TRACS and/or STC both use this brake position switch.

Pricy. $180 for Volvo

ATE part number is ….. and its only $100+

It’s a 1999 2000 bastards only year part , btw