General: - volvo v70 front passenger door electrics - Page 2

pmdirect · Jun 15th, 2009, 19:03

Sorry new to all this....What is PDM module. Is it in the door?

Chris_Rogers · Jun 15th, 2009, 20:46

Yes it's the unit with the switches on it.

pmdirect · Jun 15th, 2009, 21:44

Ok... so let me be clearer.....
If I use the switch on the front passenger door (the door with the malfunction electrics) the window goes up and down in a series of steps.
If I use the drivers door switches:
the front passeger window again moves up and down in steps but all others are fine.
The mirror will not move on the passenger but OK on drivers.
Now when it comes to the heater in the mirrors its one swith on the dash. If I use that the drivers wing mirror de-mists but the passenger mirror does not.

Knowing that would that still point to the PDM module?

Chris_Rogers · Jun 15th, 2009, 22:11

Yes, it would.

The functions are driven by the PDM, the input from the switches remote to it are sent over the car (CAN) network but are still activated by the PDM.

acseuser · Oct 13th, 2009, 15:30

Interesting; my (pass side) mirror doesn't move in ANY direction (all other door/power functions OK).

SO is this how it works... the PDM send commands over the CANBUS, which are received by a door module in the door - and that sends power to the relevant motor????

Cyprusbob · Oct 13th, 2009, 21:31

All these tech guys..........I had this problem on my old 240glt, on my 940 and a similar problem with the tailgate electrics..........broken wires in the loom, in the door frame.
On my 240 most of the wires were either cracked or broken which gave an intermitent problem

Jun 15th, 2009, 19:03	#11
pmdirect New Member Last Online: Jun 16th, 2009 00:36 Join Date: Jun 2009 Location: Slough	Volvo Door issue Sorry new to all this....What is PDM module. Is it in the door?

Jun 15th, 2009, 21:44	#13
pmdirect New Member Last Online: Jun 16th, 2009 00:36 Join Date: Jun 2009 Location: Slough	Volvo Door issue Ok... so let me be clearer..... If I use the switch on the front passenger door (the door with the malfunction electrics) the window goes up and down in a series of steps. If I use the drivers door switches: the front passeger window again moves up and down in steps but all others are fine. The mirror will not move on the passenger but OK on drivers. Now when it comes to the heater in the mirrors its one swith on the dash. If I use that the drivers wing mirror de-mists but the passenger mirror does not. Knowing that would that still point to the PDM module?

Jun 15th, 2009, 20:46	#12
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	Yes it's the unit with the switches on it.

Jun 15th, 2009, 22:11	#14
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	Yes, it would. The functions are driven by the PDM, the input from the switches remote to it are sent over the car (CAN) network but are still activated by the PDM.

Oct 13th, 2009, 15:30	#15
acseuser Junior Member Last Online: Oct 19th, 2015 16:27 Join Date: Jul 2009 Location: W. Cornwall	Interesting; my (pass side) mirror doesn't move in ANY direction (all other door/power functions OK). SO is this how it works... the PDM send commands over the CANBUS, which are received by a door module in the door - and that sends power to the relevant motor????

Oct 13th, 2009, 21:31	#16
Cyprusbob Junior Member Last Online: Jan 31st, 2017 15:33 Join Date: Jul 2008 Location: St Andrews	All these tech guys..........I had this problem on my old 240glt, on my 940 and a similar problem with the tailgate electrics..........broken wires in the loom, in the door frame. On my 240 most of the wires were either cracked or broken which gave an intermitent problem

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