Transmission switch PRND32
11-05-2009, 02:38 PM
#16
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I just went to vist the mistress during lunch. Check her fuses, and #24 was blown. Replaced it and all is well. However, it appears the dome light has issues, becasue I tried to get it to work and heard a little pop and the fuse blew again.
11-05-2009, 03:30 PM
#17
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The correct part is Porsche only. The Mercedes one does not have the additional switch points to give the PRND32.
000 545 660 6 = $98
000 545 660 6 = $98
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
11-09-2009, 08:18 PM
#18
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fuse 24 checks good alsoLooks like im to the pod and Keiths idea of lighting the bulbs directly from the connector leading in?
Where does the harness that has these wires (below) drop out of the pod?
Last edited by Tony; 11-09-2009 at 08:37 PM.
11-10-2009, 05:31 PM
#19
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Reverse Lights don't Work
>I swapped my '86 A/T for an '89 A/T a month back or so. Now, I notice I
>don't have reverse lights. In the past this would coincide with loosing the
>shift indicator lights. That was caused by a loose connector in the spare
>tire well. Not sure this time. How do I go about figuring out this
>mystery?
1) Pull Relay XXII. Check for 12 vdc at terminal 30 in the socket. If no power, check Fuse #12. CHECKS GOOD
2) Jump 12 vdc to terminal 87 in the socket. Reverse lamps should light. If not, check bulbs and wiring. CHECKS GOOD
3) If you have power at terminal 30, and the lamps light when you apply power to terminal 87; CHECKS GOOD ....then turn ignition on and put shifter in R. Check for 12 vdc on terminal 86 in the socket. If you have 12 vdc, replace the relay. BAD CHECK
Wally Plumley
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>I swapped my '86 A/T for an '89 A/T a month back or so. Now, I notice I
>don't have reverse lights. In the past this would coincide with loosing the
>shift indicator lights. That was caused by a loose connector in the spare
>tire well. Not sure this time. How do I go about figuring out this
>mystery?
1) Pull Relay XXII. Check for 12 vdc at terminal 30 in the socket. If no power, check Fuse #12. CHECKS GOOD
2) Jump 12 vdc to terminal 87 in the socket. Reverse lamps should light. If not, check bulbs and wiring. CHECKS GOOD
3) If you have power at terminal 30, and the lamps light when you apply power to terminal 87; CHECKS GOOD ....then turn ignition on and put shifter in R. Check for 12 vdc on terminal 86 in the socket. If you have 12 vdc, replace the relay. BAD CHECK
Wally Plumley
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To clarify i left terms 30 and 87 jumpered....with igntion ON...shifter to R...and put the voltmeter to term 86 and a good ground...no voltage?
so whats the next step Wally...
I think the fact that my Reverse lights and PRND32 lights dont work is all related "somewire" in the wiring.
Brand new tranny switch installed yesterday.
Actaully these ligths havent worked since i owned the car
It was one of those "i will get to it things".....well two people told me the other day that I had a break light out, so i fixed that (bad bulb) and i thought i would dive into the other "lighting issues"...reverse lights and PRND32...and the slippery slope has begun again! Perhaps this time i will end up with twin turbo and a 6 speed paddle shift transmission when Im done with this one. We all know how little fix its and projects snowball
11-10-2009, 06:22 PM
#20
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What is the RED SQUARE?
the key says a "welding point"???
I ask as the wire that leads there from the tach display i believe is a ground and it grounds the entire display. I have found the harness that leads into the pod. It was actually easy to get to...right next to the pod height adjustment. I reached in and pulled the wiring connector down...
the key says a "welding point"???
I ask as the wire that leads there from the tach display i believe is a ground and it grounds the entire display. I have found the harness that leads into the pod. It was actually easy to get to...right next to the pod height adjustment. I reached in and pulled the wiring connector down...
11-10-2009, 06:47 PM
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Also, when I check the harnes that leads to the bulbs for continuity to ground (on the door hinges) I get nothing. Non of the pins check to ground. This tells me the ground for the display is bad....I think.
now...where is the ground for the prnd32 display?
now...where is the ground for the prnd32 display?
11-10-2009, 07:05 PM
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The first step in checking this circuit is always to clean and check the connector in the spare tire well...
Find the six-terminal connector in the forward corner of the spare tire well. Locate the red/black wire in Terminal 5, and check for 12 vdc.
Find the six-terminal connector in the forward corner of the spare tire well. Locate the red/black wire in Terminal 5, and check for 12 vdc.
11-10-2009, 07:08 PM
#24
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The welded point is just a place where a bunch of brown wires come together - sometimes hidden inside the harness, sometimes visible. They all run to one grounding point - locate MP - IV and check it.
Last edited by WallyP; 04-25-2010 at 01:47 PM.
11-10-2009, 11:08 PM
#25
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Well, rigged up a 9v batery to the lights. I ran the ground from the "MP IV" ground point (above the brake pedal area) and connected each individual wire in the connecter. I got all the lights except "D" so i assume that one is burned out. So my bulbs work and the ground must good to them as they illuminated using their normal ground "source".
So far continuity is good from the connectors in the trunk to the connection in the pod.
I get 12v up to the connector in the pod...so there must be something that controls the power from that point until it hits the bulbs.....back to the schematics
more to come im sure.
So far continuity is good from the connectors in the trunk to the connection in the pod.
I get 12v up to the connector in the pod...so there must be something that controls the power from that point until it hits the bulbs.....back to the schematics
more to come im sure.
11-11-2009, 12:40 AM
#26
i did all you have done including a very nice new trans mounted switch sitting in a box now. look at the micro switch by the ignition switch.this is what sends the power to the transmission switch. it is a small plastic part that does wear out hooked so when the key is turned to the on position a lever pushes out and hits the micro switch. this is what sends the volts out to the trans switch .i will try to find receipt with part number.
11-11-2009, 01:58 AM
#27
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i did all you have done including a very nice new trans mounted switch sitting in a box now. look at the micro switch by the ignition switch.this is what sends the power to the transmission switch. it is a small plastic part that does wear out hooked so when the key is turned to the on position a lever pushes out and hits the micro switch. this is what sends the volts out to the trans switch .i will try to find receipt with part number.
Im trying to find it on the diagrams now. Thanks!
11-11-2009, 03:00 AM
#28
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ah ha!!!
I may have found a lead (pun intended)
Thank you
too late now to go out and look though.
Seems the ignition switch area does have a link to the PRND32 lights. Power comes off PIN 1 on the switch(grid B16) via a black/red wire which travels to grid J26(on to another diagram) where the wiring continues to connector shown in grid B24....then into the tach.
(if you havent referenced the diagrams...B16..etc etc are coordinates on the diagram used ot locate items )
Simple terms...Im looking for a black/red wire from PIN1 on the igntion that eventually travels all the way to a connector in the trunk where it changes to a red/green wire and returns to the pod connector where it then travels to the tach.
I may have found a lead (pun intended)
Thank youtoo late now to go out and look though.
Seems the ignition switch area does have a link to the PRND32 lights. Power comes off PIN 1 on the switch(grid B16) via a black/red wire which travels to grid J26(on to another diagram) where the wiring continues to connector shown in grid B24....then into the tach.
(if you havent referenced the diagrams...B16..etc etc are coordinates on the diagram used ot locate items )
Simple terms...Im looking for a black/red wire from PIN1 on the igntion that eventually travels all the way to a connector in the trunk where it changes to a red/green wire and returns to the pod connector where it then travels to the tach.
11-11-2009, 09:57 AM
#29
it is mounted within the tumblers reach left of the actual ignition switch.it is mounted to the steel or aluminium brace behind the dash pod that holds the ignition cylinder. i remember it is a 911 part.
i just jumper wired around the switch and the dash light park light came on.
this was a mess as i followed all the suggestions others had and that was alot of work . and upsetting seeing how cheap and easy it was to fix.
i just jumper wired around the switch and the dash light park light came on.
this was a mess as i followed all the suggestions others had and that was alot of work . and upsetting seeing how cheap and easy it was to fix.
11-11-2009, 03:39 PM
#30
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it is mounted within the tumblers reach left of the actual ignition switch.it is mounted to the steel or aluminium brace behind the dash pod that holds the ignition cylinder. i remember it is a 911 part.
i just jumper wired around the switch and the dash light park light came on.
this was a mess as i followed all the suggestions others had and that was alot of work . and upsetting seeing how cheap and easy it was to fix.
i just jumper wired around the switch and the dash light park light came on.
this was a mess as i followed all the suggestions others had and that was alot of work . and upsetting seeing how cheap and easy it was to fix.
pics to follow of it
oh..and if you jumper the tranny switch in the back, pins 1 and 2 of the 3 terminal connector, your cooling fans go on high! Im learning all kinds of stuff!