Opel Power Steering Pump: Difference between revisions

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Pump:<br>
This type of power steering pump is made by TRW and used in the Opel/Vauxhall Astra G and Zafira A. It's called the "Type 2" or "TRW 2" pump and is known to be quite noisy.
[[File:Opel Astra Power Steering Pump.jpg|frameless|border]]
[[File:Opel_Astra_Power_Steering_Pump.jpg|alt=|border|right|frameless]]
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Harness:<br>
[[File:Opel Astra Power Steering Pump Harness.jpg|frameless|border]]
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Usage:


From Arber333:
<blockquote>
So here is how the pump works.
- Connect thick red wire on live 12V via 80A fuse.
- Connect thick brown wire to car chassis as negaitve lead.
- Driver provides ignition 12V and pump should get this signal via thin Black wire.
- starts engine and pump gets the signal from live alternator voltage via thin blue/white wire.


In former case pump will spool up at once and provide steady pressure. It will draw some 6A of current with no delta pressure at the steering end.
The correct oil for this pump is Fuchs TITAN CHF202 (formerly known as Pentosin CHF202) or anything that fulfills the Opel requirement 19 40 766. It has a green color. [https://openinverter.org/forum/download/file.php?id=12865]
You can connect both thin wires to 12V at the same time too however. In that case pump will start, but will spool up really slowly.


Normally i use one 12V relay in a car to signal 12V ignition live to other support elements inside car. I connect there coolant water pump, DCDC enable signal, power to inverter , precharge relay, vacuum pump and of course EHPAS pump black wire.
== Electrical Connection [https://openinverter.org/forum/viewtopic.php?p=3771#p3771] ==
When i turn to start the car i have one latching (or two) relay to provide "engine on" signal for car computer. I connect blue/white wire here nd as soon as i start inverter power steering is on!
[[File:Opel_Astra_Power_Steering_Pump_Harness.jpg|alt=|border|right|frameless]]
</blockquote>
 
=== Pinout and Cables ===
{| class="wikitable"
|+Wire Colors and Functions
!Cable Color
!Gauge
!Function
|-
|Red
|"thick"
| +12V Supply
|-
|Brown
|"thick"
|Chassis Ground
|-
|Black
|"thin"
| +12V Ignition Signal
|-
|Blue-White
|"thin"
|"Engine Running" Indicator from Alternator
|}
 
 
To ensure a quick start up of the pump the signals on the black and blue-white wire need to be sequenced. The black wire indicates that the ignition is on. This alone does not start the pump, probably to save battery capacity for starting the internal combustion engine. Only if there's voltage on the blue-white wire present the pump starts. This would be connected to the alternator to indicate the engine is running and the alternator provides enough current to feed the power steering pump.
 
Connecting both wires together and feeding them +12V at the same time works as well, but results in slow spool up of the pump.
 
 
=== LIN Communication ===
 
=== Power Consumption ===
The pump should be connected via an 80A fuse to the 12V. The initial current will be quite high, the idle current should be around 6A without delta pressure from the steering column.
 
== Mechanical Connection and Dimensions ==
 
* Diameter: Return line
* Thread of high pressure line
* Mounting: Threads, Angle, ...
 
[[Category:OEM]]
[[Category:Opel]]
[[Category:Power Steering]]

Revision as of 20:37, 6 January 2022

This type of power steering pump is made by TRW and used in the Opel/Vauxhall Astra G and Zafira A. It's called the "Type 2" or "TRW 2" pump and is known to be quite noisy.


The correct oil for this pump is Fuchs TITAN CHF202 (formerly known as Pentosin CHF202) or anything that fulfills the Opel requirement 19 40 766. It has a green color. [1]

Electrical Connection [2]

Pinout and Cables

Wire Colors and Functions
Cable Color Gauge Function
Red "thick" +12V Supply
Brown "thick" Chassis Ground
Black "thin" +12V Ignition Signal
Blue-White "thin" "Engine Running" Indicator from Alternator


To ensure a quick start up of the pump the signals on the black and blue-white wire need to be sequenced. The black wire indicates that the ignition is on. This alone does not start the pump, probably to save battery capacity for starting the internal combustion engine. Only if there's voltage on the blue-white wire present the pump starts. This would be connected to the alternator to indicate the engine is running and the alternator provides enough current to feed the power steering pump.

Connecting both wires together and feeding them +12V at the same time works as well, but results in slow spool up of the pump.


LIN Communication

Power Consumption

The pump should be connected via an 80A fuse to the 12V. The initial current will be quite high, the idle current should be around 6A without delta pressure from the steering column.

Mechanical Connection and Dimensions

  • Diameter: Return line
  • Thread of high pressure line
  • Mounting: Threads, Angle, ...
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