openinverter.org wiki - User contributions [en]

Volvo Power Steering Pump

2026-02-23T21:30:12Z

Marc986: Formatted table

== Part Numbers and Versions ==
[[Category:Volvo]]
[[Category:Power Steering]]
{| class="wikitable"
|+Part Numbers<ref>https://rusefi.com/forum/viewtopic.php?p=45946#p45946</ref>
!Part Number
!Vehicle Used in
!Comment
|-
|30636927
|2004-2013 C30 C70 V50 S40
|unverified
|-
|31202520
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000075
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000116
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000772
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000801
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36001211
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36001485
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36002698
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36050678
|2004-2013 C30 C70 V50 S40
|unverified
|-
|8603041
|2004-2013 C30 C70 V50 S40
|unverified
|-
|8603274
|2004-2013 C30 C70 V50 S40
|unverified
|}

== Electrical Connection ==
Input signals, start and stop conditions described in S40 service manual<ref>https://www.volvo-forums.com/attachments/s40my2005_suspensionsteering-pdf.7233/</ref>

The harness for the motor supply can be bought completely (Volvo Part Number: 30775461 <ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Wiring-Harness-Cable-Harness-Power-Steering-Pump-Electrohydraulic-Power-Steering-Service-Solution-Servo-Pump/42906949/30775461.html (Backup: )</ref>) or just the connector. There is connector kits available online (avoid the pig-tail version as the cable is way undersized. [https://www.ebay.de/itm/264183247309?_nkw=Electric+Power+Steering+%28EPS%29+Pump+Wire+Connector+Kit+Type+1+Fit+for+Volvo+Ford&itmmeta=01J64V8R3PQKQS2EKGFX7V5BVM&hash=item3d828c71cd:g:9YsAAOSwkvtb3Qd3&itmprp=enc%3AAQAJAAABMHoV3kP08IDx%2BKZ9MfhVJKnq1cduF5WgneJWcf2KOIwYLjdi97A8lf5OlJCgf3lStwgB7DXBbzWP5qft6Wq1wk68P2yrbn6NspdbHXbMs%2Fo1lKpey0MBk2Dqf%2BYimnPZ2JcaYs6l1vtYvLq%2FTbkcfppJYbhQ6U1IcaY0%2BTcZ1LLNcMEsG1cAazAwdRpglFiU3VmsIb3MOC9ZgJtYJ0XEm8XvmXBFsGZb9PJlyyXlp5YtkKGxAAM0H0gjTcEUfTXFlbl8jiyw3ziYa%2FjJuc2Db%2B15Kf%2BAQY%2FhWSFyBkaSZK1%2FUit%2FC2tF3wKqv2UPWRrfcw1BV%2BWd1HzbLSbvObyYLAklc%2FNhtRoWci2FP0azltlwmEtiiOaGp4YI1cFSiJtqqDMZeeZSWI8j0AvO6hbAROI%3D%7Ctkp%3ABk9SR4CCo5uxZA Link])
[[File:Volvo eps connections.png|thumb|2011 Volvo S40 T5 Pump connectors]]

=== Connector A (Power)<ref name=":0">Volvo C30 2007 Schematic, TP39103202</ref> ===
{| class="wikitable"
|+Pinout
!Pin Number
!Cable Color
!Function
!Comment
|-
|1
|Red
| Permanent +12V for Motor
|Fused with 80A fuse (F2)
|-
|2
|Black
|GND
|
|}
{| class="wikitable"
|+
Volvo Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|31266849<ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Receptacle-Housing-Cable-Harness-Engine-Component-Parts-Electrical-Power-Steering-Module-EPS/42815694/31266849.html</ref>
|Not verified, possibly different plug?
|-
|Housing
|30728420<ref>https://usparts.volvocars.com/p/Volvo_2011_S60-30l-6-cylinder-Turbo/Receptacle-Housing-Cable-Harness-Engine-Compartment-Component-Parts-Connector-Control-Module-Power-Steering-EHPS-Electrical-Power-Steering-Module-EPS-/42878531/30728420.html</ref>
|Not verified
|}
{| class="wikitable"
|+OEM (Yazaki) Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|7283-2918-10<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7283-2918-10</ref>
|Also in black, P/N 7283-2918-30
|-
|Terminals
|7116-3250<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7116-3250</ref>
|For 8mm2 wire
|-
|Wire Seals
|7158-3610-80<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7158%2D3610%2D80</ref>
|For 8mm2 wire
|}
Note: Some later Volvo models use a similar variant of this pump which has a different shaped (smooth housing body) Connector A. Not known if the CAN protocol is different.

=== Connector B (Control)<ref name=":0" /> ===
{| class="wikitable"
|+Pinout
!Pin Number
!Cable Color
!Function
!Comment
|-
|1
|Grey-Blue
|Ignition +12V for Control
|Fused with 10A fuse (F53).
|-
|2
|
|CAN-L
|
|-
|3
|
|CAN-H
|
|}

A visual guide of the pinout can be found on [https://www.maxxecu.com/webhelp/can_peripheral_control_volvo_powersteering.html this MaxxECU online help page]
{| class="wikitable"
|+
Volvo Part Numbers
!Part
!Part Number
!Comment
|-
|Connector
|31346135<ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Receptacle-Housing-Electric-Power-Steering-EPAS-Electrical-Power-Steering-Module-PSCM/65250641/31346135.html</ref>
|Not verified
|}
{| class="wikitable"
|+OEM (Yazaki) Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|7283-8730-30<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7283-8730-30</ref>
|
|-
|Terminals
|7116-1680-02<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7116%2D1680%2D02</ref>
|
|-
|Wire Seals
|7157-3951-60<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7157%2D3951%2D60</ref>
|
|}
At least some pumps use a different control connector:
{| class="wikitable"
|+OEM (Yazaki) Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|7283-8977-30
|
|-
|Terminals
|2.8x0.8 female
|see ref<ref name=":1">https://connector.yazaki-group.com/cgi-bin/english/search.cgi?search_kbn=series&series_cd=YESC09_2.8X0.8WP</ref>
|-
|Wire Seals
|
|see ref<ref name=":1" />
|}

== CAN Bus Control ==
If it doesn't receive CAN messaging then the pump will run in "limp mode" at 75% of full speed.<ref>https://www.corral.net/threads/volvo-electric-power-steering-conversion-full-write-up.2499503/page-4?post_id=18735339#post-18735339</ref>

The CAN bus protocol has been reverse engineered in the RusEFI forum<ref>https://www.rusefi.com/forum/viewtopic.php?f=4&t=2329</ref> and a LUA script example exists<ref>https://github.com/rusefi/rusefi/blob/master/firmware/controllers/lua/examples/Volvo-electric-power-steering-pump.txt</ref>

Alternatively, there is an implementation using Arduino code<ref>https://github.com/NMSTEC/Volvo_EPS_FREE</ref>
== Mechanical Properties ==

=== Dimensions ===
Approx. 12" x 7" x 7" (305mm x 178mm x 178mm)

=== Fittings ===

* High pressure side (pump supply/outlet): M16x1.5 (you can use adapters like this one: https://www.ebay.de/itm/192079081475)
* Low pressure side (pump return/inlet) is just a hose. The fitting on the reservoir is likely 10mm (3/8").

=== Mounting Bracket ===
WillFab Motorsport (WFM) produces a universal fit bracket for this pump. Available [https://www.willfabmotorsport.co.uk/collections/eps-cradles-brackets here] and [https://www.ebay.co.uk/str/wfmttc here].

== Fluid ==
Pentosin CHF 202 is spec'd in the Volvo manual.

== References ==
<references />

Volvo Power Steering Pump

2026-02-23T21:27:54Z

Marc986: Added information about control connector in use on some pumps

== Part Numbers and Versions ==
[[Category:Volvo]]
[[Category:Power Steering]]
{| class="wikitable"
|+Part Numbers<ref>https://rusefi.com/forum/viewtopic.php?p=45946#p45946</ref>
!Part Number
!Vehicle Used in
!Comment
|-
|30636927
|2004-2013 C30 C70 V50 S40
|unverified
|-
|31202520
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000075
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000116
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000772
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000801
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36001211
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36001485
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36002698
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36050678
|2004-2013 C30 C70 V50 S40
|unverified
|-
|8603041
|2004-2013 C30 C70 V50 S40
|unverified
|-
|8603274
|2004-2013 C30 C70 V50 S40
|unverified
|}

== Electrical Connection ==
Input signals, start and stop conditions described in S40 service manual<ref>https://www.volvo-forums.com/attachments/s40my2005_suspensionsteering-pdf.7233/</ref>

The harness for the motor supply can be bought completely (Volvo Part Number: 30775461 <ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Wiring-Harness-Cable-Harness-Power-Steering-Pump-Electrohydraulic-Power-Steering-Service-Solution-Servo-Pump/42906949/30775461.html (Backup: )</ref>) or just the connector. There is connector kits available online (avoid the pig-tail version as the cable is way undersized. [https://www.ebay.de/itm/264183247309?_nkw=Electric+Power+Steering+%28EPS%29+Pump+Wire+Connector+Kit+Type+1+Fit+for+Volvo+Ford&itmmeta=01J64V8R3PQKQS2EKGFX7V5BVM&hash=item3d828c71cd:g:9YsAAOSwkvtb3Qd3&itmprp=enc%3AAQAJAAABMHoV3kP08IDx%2BKZ9MfhVJKnq1cduF5WgneJWcf2KOIwYLjdi97A8lf5OlJCgf3lStwgB7DXBbzWP5qft6Wq1wk68P2yrbn6NspdbHXbMs%2Fo1lKpey0MBk2Dqf%2BYimnPZ2JcaYs6l1vtYvLq%2FTbkcfppJYbhQ6U1IcaY0%2BTcZ1LLNcMEsG1cAazAwdRpglFiU3VmsIb3MOC9ZgJtYJ0XEm8XvmXBFsGZb9PJlyyXlp5YtkKGxAAM0H0gjTcEUfTXFlbl8jiyw3ziYa%2FjJuc2Db%2B15Kf%2BAQY%2FhWSFyBkaSZK1%2FUit%2FC2tF3wKqv2UPWRrfcw1BV%2BWd1HzbLSbvObyYLAklc%2FNhtRoWci2FP0azltlwmEtiiOaGp4YI1cFSiJtqqDMZeeZSWI8j0AvO6hbAROI%3D%7Ctkp%3ABk9SR4CCo5uxZA Link])
[[File:Volvo eps connections.png|thumb|2011 Volvo S40 T5 Pump connectors]]

=== Connector A (Power)<ref name=":0">Volvo C30 2007 Schematic, TP39103202</ref> ===
{| class="wikitable"
|+Pinout
!Pin Number
!Cable Color
!Function
!Comment
|-
|1
|Red
| Permanent +12V for Motor
|Fused with 80A fuse (F2)
|-
|2
|Black
|GND
|
|}
{| class="wikitable"
|+
Volvo Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|31266849<ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Receptacle-Housing-Cable-Harness-Engine-Component-Parts-Electrical-Power-Steering-Module-EPS/42815694/31266849.html</ref>
|Not verified, possibly different plug?
|-
|Housing
|30728420<ref>https://usparts.volvocars.com/p/Volvo_2011_S60-30l-6-cylinder-Turbo/Receptacle-Housing-Cable-Harness-Engine-Compartment-Component-Parts-Connector-Control-Module-Power-Steering-EHPS-Electrical-Power-Steering-Module-EPS-/42878531/30728420.html</ref>
|Not verified
|}
{| class="wikitable"
|+OEM (Yazaki) Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|7283-2918-10<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7283-2918-10</ref>
|Also in black, P/N 7283-2918-30
|-
|Terminals
|7116-3250<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7116-3250</ref>
|For 8mm2 wire
|-
|Wire Seals
|7158-3610-80<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7158%2D3610%2D80</ref>
|For 8mm2 wire
|}
Note: Some later Volvo models use a similar variant of this pump which has a different shaped (smooth housing body) Connector A. Not known if the CAN protocol is different.

=== Connector B (Control)<ref name=":0" /> ===
{| class="wikitable"
|+Pinout
!Pin Number
!Cable Color
!Function
!Comment
|-
|1
|Grey-Blue
|Ignition +12V for Control
|Fused with 10A fuse (F53).
|-
|2
|
|CAN-L
|
|-
|3
|
|CAN-H
|
|}

A visual guide of the pinout can be found on [https://www.maxxecu.com/webhelp/can_peripheral_control_volvo_powersteering.html this MaxxECU online help page]
{| class="wikitable"
|+
Volvo Part Numbers
!Part
!Part Number
!Comment
|-
|Connector
|31346135<ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Receptacle-Housing-Electric-Power-Steering-EPAS-Electrical-Power-Steering-Module-PSCM/65250641/31346135.html</ref>
|Not verified
|}
{| class="wikitable"
|+OEM (Yazaki) Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|7283-8730-30<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7283-8730-30</ref>
|
|-
|Terminals
|7116-1680-02<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7116%2D1680%2D02</ref>
|
|-
|Wire Seals
|7157-3951-60<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7157%2D3951%2D60</ref>
|
|}
At least some pumps use a different control connector:
{|
|+
'''OEM (Yazaki) Part Numbers'''
!Part
!Part Number
!Comment
|-
|Housing
|7283-8977-30
|
|-
|Terminals
|2.8x0.8 female
|see ref<ref name=":1">https://connector.yazaki-group.com/cgi-bin/english/search.cgi?search_kbn=series&series_cd=YESC09_2.8X0.8WP</ref>
|-
|Wire Seals
|
|see ref<ref name=":1" />
|}

== CAN Bus Control ==
If it doesn't receive CAN messaging then the pump will run in "limp mode" at 75% of full speed.<ref>https://www.corral.net/threads/volvo-electric-power-steering-conversion-full-write-up.2499503/page-4?post_id=18735339#post-18735339</ref>

The CAN bus protocol has been reverse engineered in the RusEFI forum<ref>https://www.rusefi.com/forum/viewtopic.php?f=4&t=2329</ref> and a LUA script example exists<ref>https://github.com/rusefi/rusefi/blob/master/firmware/controllers/lua/examples/Volvo-electric-power-steering-pump.txt</ref>

Alternatively, there is an implementation using Arduino code<ref>https://github.com/NMSTEC/Volvo_EPS_FREE</ref>
== Mechanical Properties ==

=== Dimensions ===
Approx. 12" x 7" x 7" (305mm x 178mm x 178mm)

=== Fittings ===

* High pressure side (pump supply/outlet): M16x1.5 (you can use adapters like this one: https://www.ebay.de/itm/192079081475)
* Low pressure side (pump return/inlet) is just a hose. The fitting on the reservoir is likely 10mm (3/8").

=== Mounting Bracket ===
WillFab Motorsport (WFM) produces a universal fit bracket for this pump. Available [https://www.willfabmotorsport.co.uk/collections/eps-cradles-brackets here] and [https://www.ebay.co.uk/str/wfmttc here].

== Fluid ==
Pentosin CHF 202 is spec'd in the Volvo manual.

== References ==
<references />