XC90 AWD L6-2.9L Turbo VIN 91 B6294T (2004)
Steering Control Module: All Technical Service Bulletins
Steering - Intermittent Lack Of Power Steering Assist
Retailer Technical Journal 18036
Intermittent low power steering assistance,
vehicles with speed sensitive steering
If using a printed copy of this Retailer Technical Journal, first check for the latest online version.
Customers may complain of intermittent low power steering assistance on vehicles with speed sensitive steering. After cycling ignition key, the steering
assistance may then be normal. This does not affect the hydraulic power steering system and only affects the electronic assist.
Replace the Power Steering Unit (PSU), also known as Power Steering Control Module (PSCM), in a S80/V70/XC70 (P3) according to VIDA Removal,
replacement, and installation under 6 Suspension and steering > 64 Steering > 645 power steering equipment > Actuator speed dependent servo
On XC90s and S60s, there is no replacement procedure in VIDA, so the location is shown in this document. Once the driver's kick panel is removed, the
PSU is visible.
In the VIDA parts catalog, the PSU for S80/V70/XC70 (P3) can be found under 6 Suspension and steering > 64 Steering > 642 steering gear > Steering
In the VIDA parts catalog, the PSU for XC90/S60 (P2) can be found under 6 Suspension and steering > 64 Steering > Steering box LHD ECPS
Speed-related power steering, LHD.
See illustrations below for component location.
The PSU on a P3 vehicle is located forward of the glove box.