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Search found 53 matches

by aeg
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?
by aeg
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.
by aeg
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...
j1bmdaqniiag1.jpeg
j1bmdaqniiag1.jpeg (146.06 KiB) Viewed 408 times
by aeg
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...
by aeg
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...
by aeg
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...
by aeg
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...
by aeg
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.

connector.gif
connector.gif (31.82 KiB) Viewed 315 times
tcm_pinout.gif
tcm_pinout.gif (22.91 KiB) Viewed 315 times
tcm-wiring.jpg
tcm-wiring.jpg (95.82 KiB) Viewed 315 times
by aeg
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...
by aeg
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?
0834.jpg
0834.jpg (114.09 KiB) Viewed 118 times
0835.jpg
0835.jpg (158.68 KiB) Viewed 118 times