964 c4-no w/screen wash washer/wiper wiring
05-10-2009, 12:58 AM
#1
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964 c4-no w/screen wash washer/wiper wiring
Hi guys,
I am after a wiring diagram for an '90 964 C4, specifically for the washer/wiper system with intensive cleaning.
The system had been working perfectly up until 2 weeks ago. Fuse 24 is good, wiring has been all checked, there is pwr out of the column switch, the motors both work and the wipers work faultlessly, but there seems to be an anomily with the relays. Somehow pwr does not seem to be coming out of central electrics.Relay 42 which is the wiper intermittent relay also seems oK. relay 53, which is suppossed to be the light dimming relay has noyhing to do with the lights-that is I remove it and all light funtions work correctly.
I need to trace the wiring to see which relay is specifically used and how all the wiring ties in with the intensive cleaning. I think that the wiring has changed from the first 964's through the different model years. Mine therefore should be one of the earliest wiring setups.
Any help would be greatly appreciated!!!
Many thanks,
Lou.
I am after a wiring diagram for an '90 964 C4, specifically for the washer/wiper system with intensive cleaning.
The system had been working perfectly up until 2 weeks ago. Fuse 24 is good, wiring has been all checked, there is pwr out of the column switch, the motors both work and the wipers work faultlessly, but there seems to be an anomily with the relays. Somehow pwr does not seem to be coming out of central electrics.Relay 42 which is the wiper intermittent relay also seems oK. relay 53, which is suppossed to be the light dimming relay has noyhing to do with the lights-that is I remove it and all light funtions work correctly.
I need to trace the wiring to see which relay is specifically used and how all the wiring ties in with the intensive cleaning. I think that the wiring has changed from the first 964's through the different model years. Mine therefore should be one of the earliest wiring setups.
Any help would be greatly appreciated!!!
Many thanks,
Lou.
05-12-2009, 01:16 PM
#5
Rennlist Member
relay 53 is for additional cleaning fluid pump in your car.
pull relay 53
check with voltmeter before you jump anything. turn key to on.
pin 3 is power from fuse 24, check for 12 volts
pin 5 is power out to additional pump. jump 3 to 5 and see if pump works
pin 7 is power out to regular pump. jump 3 to 7 and see if pump works
pin 1 is power from fuse 24 through intensive cleaning press button. Push the button and you should get 12 volts at pin 1
pin 2 is power all the time, check for 12 volts
6 is power out to relay 42 pin 2
pull relay 53
check with voltmeter before you jump anything. turn key to on.
pin 3 is power from fuse 24, check for 12 volts
pin 5 is power out to additional pump. jump 3 to 5 and see if pump works
pin 7 is power out to regular pump. jump 3 to 7 and see if pump works
pin 1 is power from fuse 24 through intensive cleaning press button. Push the button and you should get 12 volts at pin 1
pin 2 is power all the time, check for 12 volts
6 is power out to relay 42 pin 2
Last edited by stevepaa; 05-12-2009 at 08:22 PM.
06-06-2009, 06:36 AM
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Thx guys, all sorted. First of all, the wrong relay was installed at R53. The correct one is installed now and the intensive cleaning now works. The second issue is I was checking the wrong motor on the main washer bottle. So, I have changesd the windscreen washer motor and all is good. Thanks for all your input.
