ABS Module 850 V70 S70 C70
The ABS Module 850 V70 S70 C70 refers to the Anti-lock Braking System control module used in select Volvo models, specifically the 850 (1993–1997), V70, S70, and C70 (1998–2000). This module monitors wheel speed sensors and helps prevent wheel lockup during braking by modulating brake pressure. Common issues with this module include intermittent ABS warning lights, non-functioning speedometers, or traction control problems, often due to internal solder joint failures. Replacement or repair of the module restores proper ABS and traction control functionality.

ABS Module 850 V70 S70 C70
1996-1997 Volvo 850 With TRACS & 1998 Volvo V70, V70R, XC70, S70, C70 With Tracs 
 
 
 
 
 
 Part numbers are identical/compatible 
 
 
 9162675 
 
 
 9140774 
 
 
 8602266 
 
 
 
 
 Vehicles with TRACS have a TRACS OFF light and a TRACS button to the right of the steering wheel. 
 1996-1997 Volvo 850, Without TRACS & 1998 Volvo V70, S70, C70 Without TRACS 
 
 
 
 
 
 Part numbers are identical/compatible 
 
 
 9140773 
 
 
 8602265 
 
 
 
 
 1999-2000 Volvo S70, V70, C70 
 1999-2000 VOLVO S70,V70,C70 WITH STC TRACTION CONTROL 
 
 
 
 
 
 Part numbers are identical/compatible 
 
 
 9472088 
 
 
 9472401 
 
 
 9472866 
 
 
 9472971 
 
 
 9496440 
 
 
 9496946 
 
 
 8619538 
 
 
 8619545 
 
 
 
 
 For all S70,V70,C70 models with optional STC-traction control.  Vehicles with STC have a switch labeled "STC" to the right of the steering wheel on the dashboard. The "W" button on your center console is NOT STC traction control. 
 1999-2000 VOLVO S70,V70R, XC70,V70 WITH TRACS TRACTION CONTROL 
 
 
 
 
 
 Part numbers are identical/compatible 
 
 
 8622093 
 
 
 9472100 
 
 
 9472650 
 
 
 9496450 
 
 
 8622097 
 
 
 
 
 This is only for cars with All Wheel Drive (AWD), and 99-2000 Front Wheel Drive S70,V70R, XC70,V70 with TRACS traction control.  Vehicles with TRACS have a switch labeled "TRACS" to the right of the steering wheel.  AWD cars have TRACS by default without a button/switch.  The "W" button on your center console is not traction control. 
 1999-2000 VOLVO S70,V70,C70 WITHOUT TRACTION CONTROL 
 
 
 
 
 
 Part numbers are identical/compatible 
 
 
 9467582 
 
 
 9472095 
 
 
 9472969 
 
 
 9496942 
 
 
 8619535 
 
 
 8619544 
 
 
 
 
 This is only for FWD cars without optional traction control.  The "W" button on your center console is not traction control. 
 Source 
 https://midwest-abs.com/

Wheel Speed Sensor 1996-1997 Volvo 850 and 850R & 1998 Volvo V70, V70R, XC70, S70, C70
Sensor Resistance 
 
 Sensor Voltage