Renault Forums :: Independent Renault forum - View Single Post - Renault Scenic II - Access the resistor pack in 5 mins.

View Single Post
post #125 of (permalink) Old 23rd November 2010
Junior Member
Repairman44's Avatar
Join Date: Sep 2010
Posts: 9
Nominated 0 Times in 0 Posts
TOTW/F/M Award(s): 0
Thanks: 0
Thanked 5 Times in 3 Posts
Re: Renault Scenic II - Access the resistor pack in 5 mins.

Just a note about preventative maintenance on the resistor pack connectors.

The main reason for burn-ups on the connectors is that over time the pins and sockets get dirty and corroded and instead of making good contact and passing all the required current by the fan, they produce the equivalent of a resistor, and this in turn heats up causing all the arcing and sparking between the contacts.

At the first sign of an intermittent fan, or it not working as expected at the correct speeds, disconnect the multi-way connector and clean the pins with some emery paper, and the sockets with a very thin flat needle file with a tapered end. This will extend the life of the contacts and restore correct working, as long as the resistors on the pack are still OK.

It's rare to get the actual resistors in the pack to fail; if they do they would normally go open circuit and stop the fan altogether; the main cause of failure is the connectors.

Of course it you are handy with a soldering iron you could cut out the connector altogether and solder the wires directly on the the pins of the resistor pack taking care to insulate them at the pin end with heat-shrink or Hellerman sleeving. This would make the whole system more reliable. I used to do this regularly with Mk3 Escort rear lamp clusters which were notorious for going intermittent with corroded connectors.

Mike; retired Electronics Engineer.
Currently in Repairman44's garage:
Renault Scenic Expression 2003 Red
Repairman44 is offline  
The Following 2 Users Say Thank You to Repairman44 For This Useful Post:
andy1458 (20th November 2013), Brotyboy (1 Week Ago)
For the best viewing experience please update your browser to Google Chrome