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Renault clio II 1.2 - Question about mounting electric power assistance?

Jakub.1987 11400 12
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  • #1 16972728
    Jakub.1987
    Level 7  
    Posts: 6
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    Hello, I am going to install electric power steering in clio 99r. And now my question does it only need a column with a driver and a motor? anything else? I was thinking about the hydraulic one but I decided on electric because of what I know less modifications. With a hydraulic belt pulley to be replaced, the steering column alternator base is a crush in which the pipes lead to exhaust. So I gave up. If someone was installing electrical please list of parts and some connection diagram. I saw some scheme in the forum but there are no specific answers.
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    #2 16972736
    andrzej20001
    Level 43  
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    You can insert a hydro strip and put in an electric pump, e.g. from Astra g (4 wires +, -, after ignition and alternator lamp). You can press the tubes at every point where they do plumbing.
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  • #3 16972855
    Jakub.1987
    Level 7  
    Posts: 6
    Rate: 1
    I am more interested in installing the original, from what I read two pins on the plus and minus driver and after ignition. But do you need a steering angle sensor this on a mangle? can the mangle be left original? Will it play with the power steering column? Someone has installed such support in tractors etc. so how to run them without unnecessary connections, will the original alternator run out?
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    #4 16973469
    milejow

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    Jakub.1987 wrote:
    from what I read two pins on the plus and minus driver and after ignition. But do you need a steering angle sensor this on a mangle? can the mangle be left original?

    Without the shaft position sensor on the mangle, the support will not start, so the mangle must be suitable.
    In addition to the power supply, the power steering controller still needs a running engine signal, and the vehicle speed (power steering is progressive) without the engine running signal will not start. In tractors, they mount support from Megane II, not from ClioII, and the first starts after the power supply (in emergency mode)

    Added after 3 [minutes]:

    Jakub.1987 wrote:
    I am more interested in the original assembly

    In your case it will not be the original because Clio in this model did not have electrical support, it got it only since 2001 in the phII model.
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  • #5 16973577
    Jakub.1987
    Level 7  
    Posts: 6
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    So the easiest way will be to mount a hydraulic one, although there are some combinations? Does anyone have any other idea to contribute?
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    #6 16973629
    milejow

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    It is possible to mount the electric, all signals needed to start are in the car, e.g., the signal of a running engine is nothing but the rotation signal flying to the indicators (pin 70 in syrius32).
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  • #7 16973708
    Jakub.1987
    Level 7  
    Posts: 6
    Rate: 1
    And this sensor with a crimp on which pin? Do you have any breakdown with what is located? One thing I know from the clocks I pull this cord from the revolutions, from the sensor's mangle but on which pin? Any cable from the ignition also gives to this driver? And tell me, is such a set like from the photo plus mangle enough for assembly?
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  • #8 16973814
    milejow

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    Find the VISU schematics for Renault models on the network, on them you will have everything exactly described which cable to which pin. In the set you should have a steering column with a motor, mangle and controller, for this you need connecting cubes
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    #9 16977673
    smutekh
    Level 11  
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    Install the power steering pump from saxo. There are no sensors on the mangle. Only the relay controlled by the plus after ignition. He lets the current on the pump and it works all the time when the car engine is running. You connect only the minus from the battery and the plus gives the relay. This relay you must give such as it was originally used because it is at a higher current than such a universal one, e.g. for lights. If you don't turn the steering wheel, the pressure goes back. You can earn some extra money as someone wrote before.
  • #10 16978181
    Jakub.1987
    Level 7  
    Posts: 6
    Rate: 1
    I can't find the visu for clio ii, but just considering the topic of support with saxo, then the original crush will go plus support with saxo. But I'm looking for parts :) we will see how with availability
  • #11 16980541
    milejow

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    Jakub.1987 wrote:
    then the original crush will go plus saxo support.

    There is an electrohydraulic pump in Saxo, what do you want to power it like your mangle is purely mechanical ???
    Whatever you think, the mangle you have to exchange, you are saved by the support from Twingo I, there is nothing on the mangle but if you match the column in Clio, I don't know ...
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  • #12 16980544
    Jakub.1987
    Level 7  
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    I meant putting on a hydraulic mangle plus electrohydraulic pump. Does it have the right to exist from what I know?
  • #13 16994788
    smutekh
    Level 11  
    Posts: 21
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    After all, the assumption of a power-assisted transmission is self-evident. I think that with a saxo pump it will run fast
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Topic summary

✨ The discussion revolves around the installation of electric power steering in a Renault Clio II (1999 model). The original poster seeks guidance on the necessary components for the installation, expressing a preference for electric over hydraulic systems due to fewer modifications required. Responses highlight the need for a steering column with a motor, a power steering controller, and a running engine signal. It is noted that the Clio II did not originally come with electric power steering, which was introduced in the Phase II model from 2001. Several users suggest using parts from other models, such as the Astra G and Saxo, and emphasize the importance of having the correct sensors and wiring connections. The conversation also touches on the feasibility of using a hydraulic system combined with an electrohydraulic pump.
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FAQ

TL;DR: Clio II got factory electric power steering in 2001, and “without the shaft position sensor the support will not start.” [Elektroda, milejow, post #16973469]

Why it matters: This FAQ shows how to choose between electric, hydraulic, and electrohydraulic options and wire them correctly for a 1999 Clio II.

Quick Facts

What parts do I need to add electric power steering (EPS) to a 1999 Clio II?

You need the EPS steering column with motor, a compatible rack (with shaft position sensor), the EPS controller, and the correct connector blocks. This is the baseline “set” for an original-style electric assist swap. Without the compatible rack and controller, the system will not initialize. “Find the VISU schematics… you will have everything exactly described.” [Elektroda, milejow, post #16973814]

Will my original 1999 mechanical rack work with EPS?

No. The EPS requires a steering shaft position sensor on the rack. Without that sensor, the support will not start. Pre‑2001 Clio II racks typically lack the required sensing hardware, so plan on swapping the rack with a compatible unit. [Elektroda, milejow, post #16973469]

What inputs does the Clio EPS need to operate?

Besides power and ignition, the EPS controller needs an engine‑running signal and vehicle speed. The assist is progressive with speed, so missing signals prevent start‑up or force limp behavior. That’s why proper wiring to ignition, tach, and speed sources matters. [Elektroda, milejow, post #16973469]

Where do I tap the engine‑running signal for EPS on Clio II?

Use the rotation (tach) signal that feeds the instrument cluster; it’s available from the ECU as noted on Sirius32 pin 70. Route that to the EPS controller’s engine‑run input as per the VISU diagram for your variant. [Elektroda, milejow, post #16973629]

Can I avoid EPS and fit a hydraulic system with an electric pump instead?

Yes. Keep or fit a hydraulic rack and drive it with an electrohydraulic pump, such as the Astra G unit. That pump uses four connections: battery positive, battery negative, ignition‑switched positive, and alternator lamp signal for control. [Elektroda, andrzej20001, post #16972736]

Which electric pump is commonly used and how many wires does it need?

An Opel/Vauxhall Astra G electrohydraulic pump is a common choice. It requires four wires: +12 V, ground, ignition‑switched +12 V, and the alternator lamp signal. This simple interface eases retrofits where full EPS integration is impractical. [Elektroda, andrzej20001, post #16972736]

Will a Saxo electrohydraulic pump work with my stock mechanical rack?

No. The Saxo unit powers a hydraulic rack. If your rack is purely mechanical, there’s nowhere for hydraulic pressure to act. Swap to a hydraulic rack first, or choose a true EPS column and matching rack. [Elektroda, milejow, post #16980541]

How should I wire a Saxo pump so it runs only with the engine on?

Use an ignition‑controlled high‑current OEM relay to feed the pump’s positive lead. Connect the pump negative directly to battery ground. The relay’s coil gets ignition +12 V, so the pump runs when the engine is on. Avoid light‑duty universal relays. [Elektroda, smutekh, post #16977673]

Is there an EPS option that can run with minimal signals for swaps (e.g., tractors)?

Yes. Install EPS from Megane II. It can start after power alone in an emergency mode, which simplifies non‑OEM uses. Full functionality still needs proper vehicle signals for progressive assist. “In tractors, they mount support from Megane II.” [Elektroda, milejow, post #16973469]

From what year did Clio II have factory EPS?

Clio II received factory EPS starting with Phase II in 2001. Earlier Phase I cars, like 1999 models, did not get electric assist from the factory. Plan retrofits accordingly to match components across phases. [Elektroda, milejow, post #16973469]

Where can I find exact pinouts and connector references for this retrofit?

Consult the Renault VISU wiring schematics for your model and year. They show connector references, pin numbers, and wire colors for EPS, instrument cluster, and ECU links. Use these diagrams to avoid guesswork. [Elektroda, milejow, post #16973814]

Will my alternator handle the added load from an electrohydraulic pump?

The thread does not state alternator capacity. It notes the pump’s alternator lamp input among the four wires. Use the lamp signal for control and verify current draw versus your alternator’s rating before installation. [Elektroda, andrzej20001, post #16972736]

How do I wire an Astra G electrohydraulic pump? (3‑step)

  1. Connect heavy +12 V and ground directly to the battery via appropriate fusing and cable gauge.
  2. Run an ignition‑switched +12 V line to the pump’s IGN input.
  3. Connect the alternator lamp signal wire to the pump’s control input. [Elektroda, andrzej20001, post #16972736]

What’s a CAN bus, and do I need it for these swaps?

CAN bus is a vehicle network linking modules. The Astra G and Saxo pumps described here use simple discrete wires, not CAN. The Megane II EPS can start in emergency mode with only power, though full features expect vehicle signals. [Elektroda, milejow, post #16973469]

What’s an EPS “progressive” assist map?

Progressive assist means lighter steering at low speed and firmer feel at high speed. The EPS controller adjusts torque based on vehicle speed input. Missing speed input can prevent start‑up or force fail‑safe behavior. [Elektroda, milejow, post #16973469]

What failure modes should I watch for when retrofitting?

Common issues include no‑start assist from a missing rack sensor, no engine‑run signal, or absent speed input. Mismatched components—like a mechanical rack with a hydraulic pump—will not work. Verify each required signal before final assembly. [Elektroda, milejow, post #16973469]
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