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pnp switch replacement

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90

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nascenta
Posts: 16
Joined: 10 January 2010
Year and Model: 850r t5
Location: Edmonton, AB

Re: pnp switch replacement

Post by nascenta »

I had problems with my pnp switch. It kept me from driving my 850 t5 turbo for almost a year! Turns out I had two problems at the same time. The ignition switch contacts were worn out and the pnp switch was out of alignment.
To test your pnp switch: 1. disconnect the connector by lifting up the metal tab. 2. the pins are numbered 1 through 9 with one being toward the front of the vehicle on the left hand side (passenger side). The first row is 1,2, 3 then toward the back of the vehicle 4,5,6 and then 7,8,9. 3. In park you will have continuity (a closed circuit) between pins 7 and 6, and between 4 and 1. In reverse it is between 9 and 5. In Neutral it is between 4 and 2, in drive it is between 2 and 3. If your pnp gives you these results, the switch is good. Loosen the bolts and change the alignment!

318mike
Posts: 167
Joined: 11 January 2012
Year and Model: 850,1994
Location: 01970

Post by 318mike »

Replaced pnp switch(took four hours).Backup lights working great.No more code 313.Will not shift out of park unless I use the shiftlock button and all of the lights(w,s,e)are flashing along with the arrow on the dash.If your a volvo rookie like me it boggles the mind!

318mike
Posts: 167
Joined: 11 January 2012
Year and Model: 850,1994
Location: 01970

Post by 318mike »

The symptoms previously posted are on my 94 960

318mike
Posts: 167
Joined: 11 January 2012
Year and Model: 850,1994
Location: 01970

Post by 318mike »

Just a follow up... I bought a winter mode switch on ebay for 40 bucks an the flashing arrow is no more :D

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billofdurham
MVS Moderator
Posts: 6507
Joined: 2 February 2006
Year and Model: 855, 1995
Location: Durham, England
Been thanked: 5 times

Post by billofdurham »

Thank you for the update.

Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

Kappy5003
Posts: 98
Joined: 17 March 2008
Year and Model: 1994 960
Location: Wagin West Australia

Post by Kappy5003 »

I have a 94, 960 and for some time have been experiencing this dreaded flashing arrow, combined with the E S W buttons flashing. The OBD code I get is 3 1 3.

This symptom is intermittent and seems to happen more when the vehicle has been sitting overnight especially when the outside temperature is low( over summer when day temps are over 30C and night temps are over 20C all is good) as soon as night temps start to drop to below around 15C problem returns.
I reset code and all is good until the next morning. When vehicle is warm doesn't happen.

If allow to idle for 10-15 minutes doesn't seem to occur, maybe luck.

I can move out of park into reverse and drive in reverse as soon as I select Dive, flashing arrow.

Ignition switch replaced with genuine parts recently.

There was a post about cleaning PNP switch, cant seem to find it again but more the point where do I locate this switch.

Thanks in advance

precopster
Posts: 7543
Joined: 21 August 2010
Year and Model: Lots
Location: Melbourne Australia
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Post by precopster »

Sorry it took me so long to find this post but it was an unintentional find from a post you made about a 960 throttle plate fitted to a 850.

Anyway the PNP is on the driver's side of the gearbox on the opposite side to the selector linkage so on the exhaust side. I recently cleaned a PNP in a 960 after swapping in a Toyota auto 'box (big job, not easy but worth it in the end) The PNP is a large rotary shaped aluminium housing with a large plug, perhaps six pins. Inside it are many spring loaded copper contacts that require filing and retensioning

The problem I used to have with my own 960 was lots of codes including trans codes until I swapped out all the ignition coils. They were arcing badly and causing the engine and trans CPUs to call up phantom codes. The clue to your problem is the temps. When coils are damp they arc out a lot more. Hope this helps.

Cheers Mike
Current cars VW Transporter 2.5TDI, 2010 XC90 D5 R Design

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