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C30 / S40 & V50 '04-'12 / C70 '06-'13 General Forum for the P1-platform C30 / S40 / V50 / C70 models |
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Throttle position Module - need collective thoughtsViews : 553 Replies : 3Users Viewing This Thread : |
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Dec 2nd, 2023, 10:49 | #1 |
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Last Online: Dec 20th, 2023 18:10
Join Date: Nov 2023
Location: Portland
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Throttle position Module - need collective thoughts
Aloha everyone.
Story short - bought in September 2007 Volvo S40 T5 (AT) with 162k miles on it with a couple of error codes (Throttle and Accelerator pedal) and a broken oil pan as a small project for myself. - Oil pan replaced, no issues. - Accelerator Pedal fixed. Some stupid fella plugged in connector to Throttle body upside down. After connecting how it should be Accelerator pedal DTC is a history. Never saw it again. - Throttle body - have been fighting for 2 months, and almost lack of ideas. Currently VIDA shows 4 errors related to Throttle Body Unit: ECM 9200 TP sensor faulty signal ECM 921C Throttle unit potentiometer 1 signal too high ECM 922D Throttle unit potentiometer 2 signal too low ECM 9270 Throttle valve - Faulty signal ECM 92CC throttle unit signal too high
Accelerator pedal tested in VIDA and shows 80% (I think this is fine, no?). My last theory is that CEM is dying or dead, because when I read car with Vida and ignition ON everything is OK, but if launch a car 3/4 of a car's modules turn in red, dozens of DTCs, car behaves like crazy -wipers ON/Off, dashboard shuts off, ABS, SRS, Immo, Brake failure, doesn't give the key - all of these pops up but never re-appear after erase. Only if I read a idling car with VIDA. Car is starting, idling OK, takes up to 1700 RPM max and no further. It is not like I can't take it to the repair shop. For me it is more like a challenge. I would appreciate any ideas where to look. And yeah, PCV is totally screwed - lot's of smoke comes if open oil filling cap but I don't think this might be an issue. Last edited by SWATIk; Dec 2nd, 2023 at 10:58. |
Dec 14th, 2023, 06:59 | #2 |
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Last Online: Dec 20th, 2023 18:10
Join Date: Nov 2023
Location: Portland
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Fixed. Car is up and running.
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Dec 14th, 2023, 07:11 | #3 |
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Last Online: Jun 18th, 2024 21:33
Join Date: Apr 2013
Location: Plymouth
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Hi.
That was quick. What did you find and what was the fix?? Might be useful to others. I had various "CAN" issues on my V50. I ended up changing the 6 data pins in the CEM plugs and also the Accelerator plug pins. I think I also replaced 1 data wire between the accelerator pedal and the CEM.
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V50 2005. 2.0D Last edited by IainG; Dec 14th, 2023 at 07:16. |
Dec 17th, 2023, 14:44 | #4 |
Clueless
Last Online: Jun 13th, 2024 15:08
Join Date: Apr 2013
Location: Wrotham
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I did the same as IainG on my wife's S40 and it has solved the same issue but it did give an error shortly afterwards and I am tempted to replaced the pins on the throttle body.
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Current Volvo's: S40 1.8 (55) & V50 2.4i (04) Past Volvo: S40 1.8 ('97/R) & 240 GLE ('76/R) |
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