Search found 53 matches
- 26 Feb 2026, 23:14
- Forum: 850, S70, V70, C70, V70-XC 1992-2000
- Topic: Volvo S70 SC-805 radio code from dumping the ROM chip
- Replies: 6
- Views: 218
Re: Volvo S70 SC-805 radio code from dumping the ROM chip
For SC-805, is it not just the low nibble of the bytes at offset 0, 4, 8 and 12 in that order?
- 06 Feb 2026, 19:44
- Forum: 850, S70, V70, C70, V70-XC 1992-2000
- Topic: Plastic Dash Pad & Other Plastic Repair
- Replies: 8
- Views: 429
Re: Plastic Dash Pad & Other Plastic Repair
I'd sure be interested in a set of 3D printed plastics to replace the entire molding under the dash pad, to avoid all that tedious repair work.
- 31 Dec 2025, 05:54
- Forum: Car Talk & MVS Itself
- Topic: Volvo/cars humor
- Replies: 451
- Views: 75114
Re: Volvo/cars humor
Spotted on the Internet...
- 29 Dec 2025, 17:58
- Forum: 850, S70, V70, C70, V70-XC 1992-2000
- Topic: Getting up arrow and check engine light on after repairing PNP switch
- Replies: 30
- Views: 1101
Re: Getting up arrow and check engine light on after repairing PNP switch
Another note. My guess would be that inside the switch, the innermost trace (closest to the circular hole) is ground, the next is PA, then A, then B; and the outermost two traces are shared between C, 50S and BL; and there is an electrical connection between the innermost two copper brushes at the w...
- 29 Dec 2025, 16:58
- Forum: 850, S70, V70, C70, V70-XC 1992-2000
- Topic: Getting up arrow and check engine light on after repairing PNP switch
- Replies: 30
- Views: 1101
Re: Getting up arrow and check engine light on after repairing PNP switch
OK! So the switch contacts for C, PA, 50S and BL are good, but A and B are open circuit. Also, the wiring between the ECU box and the transmission is OK. You need to replace the switch or redo the repair. No need to measure across the blue line. Now that we know A20 to A5/A6 are OK, we know the grou...
- 28 Dec 2025, 23:54
- Forum: 850, S70, V70, C70, V70-XC 1992-2000
- Topic: Getting up arrow and check engine light on after repairing PNP switch
- Replies: 30
- Views: 1101
Re: Getting up arrow and check engine light on after repairing PNP switch
Just to make sure I have this right, I'm looking down into the ECU and TCU housing and I hook up my multimeter like so and test continuity on pins A3 (jn P, R,N, D, 3, L), A4 (jn P, R,N, D, 3, L), A5 (jn P, R,N, D, 3, L) and A6 (jn P, R,N, D, 3, L)? Yes, that's right. If you look at the chart in th...
- 23 Dec 2025, 20:18
- Forum: 850, S70, V70, C70, V70-XC 1992-2000
- Topic: Getting up arrow and check engine light on after repairing PNP switch
- Replies: 30
- Views: 1101
Re: Getting up arrow and check engine light on after repairing PNP switch
Just to make sure I have this right, I'm looking down into the ECU and TCU housing and I hook up my multimeter like so and test continuity on pins A3 (jn P, R,N, D, 3, L), A4 (jn P, R,N, D, 3, L), A5 (jn P, R,N, D, 3, L) and A6 (jn P, R,N, D, 3, L)? Yes, that's right. If you look at the chart in th...
- 22 Dec 2025, 19:23
- Forum: 850, S70, V70, C70, V70-XC 1992-2000
- Topic: Getting up arrow and check engine light on after repairing PNP switch
- Replies: 30
- Views: 1101
Re: Getting up arrow and check engine light on after repairing PNP switch
TCM is innocent until proven guilty. Car off, parking brake set, TCM removed, measure ohms from ECU box TCM connector pin A20 to each of pins A3, A4, A5, A6 in every gear selector position.
- 17 Dec 2025, 02:44
- Forum: 850, S70, V70, C70, V70-XC 1992-2000
- Topic: What have you hauled in your Volvo?
- Replies: 63
- Views: 2688
Re: What have you hauled in your Volvo?
The mention of a washer and dryer reminded me: A full-size refrigerator (18 cu ft with top freezer). I slid it in on its side, compressor side down, and put it back upright for 24 hours before plugging it in. Also a standup arcade machine; numerous 4-drawer filing cabinets (one at a time); and a few...
- 08 Dec 2025, 22:18
- Forum: 850, S70, V70, C70, V70-XC 1992-2000
- Topic: Where does this thing go?
- Replies: 2
- Views: 118
Where does this thing go?
I'm pretty sure this goes in the car's interior somewhere, does anyone recognize it?






