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Rear wiper fuse blowing problem fixed


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Hi all,

 

I thought I would relay some hopefully useful information about my recently acquired 1.4TDi Ambient h/b.

 

After purchasing the car and getting it home earlier this week, I did another test of all the functions and then noticed the rear wiper did not move.

I checked the fuses - the 10A mini fuse F32 in the 'end of dash' fusebox was blown.

 

The Haynes manual was consulted [the electrical schematics for the rear wiper are incorrect - pins 2 and 3 are swapped] - I then tried injecting 12V and a 'start' signal to the relevant pins - no joy and a lot of sparking.

 

I tried to removed the wiper arm - stuck fast onto the spindle, however it was removed after a lot of swearing and a modicum of hacksawing.

 

Next, to the wiper motor - removing the trim from the inside of the hatch revealed the motor/gearbox assembly.  This dropped out remarkably easily, however whilst manhandling it at the end of the washer pipe I noticed a rattling noise.

 

I removed the motor from the motor/gearbox assembly and out dropped two bits of the motor brushes !

 

I replaced the motor rotor assembly and what was left of the brushes were touching the armature contacts.

 

The motor assembly was bench tested with 12v - it worked !

 

It was refitted back in the car along with a new fuse 32 [10A] and now all is well.

 

 

Happy rear wiping

 

Graeme

 

 

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Hi Mogwye,

 

The brushes still have enough meat on them to operate the motor.  That motor is only used intermittently so I'm hoping will last.

 

Graeme

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