What abscate asked!
Also...let them check ECU too for stored codes.
In rare cases TCM sends request to ECU to turn on CEL when specific codes are stored.
1999 v70 xc transmission, has a master mechanic and specialty shop stumped
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misha
- Posts: 5379
- Joined: 7 December 2008
- Year and Model: '97 850 2.5 20v
- Location: Serbia
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Re: 1999 v70 xc transmission, has a master mechanic and specialty shop stumped
Also...let them check ECU too for stored codes.
In rare cases TCM sends request to ECU to turn on CEL when specific codes are stored.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
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wizechatmgr
- Posts: 1798
- Joined: 12 January 2017
- Year and Model: 1999 V70 XC AWD 2.4T
- Location: Albany, NY area
- Has thanked: 45 times
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Anyone look at the ABS module? I thought you could also get this scenario if you have a bad PNP switch or the ABS module was ready to go kaput. This is of course assuming that I remember correctly, which may be a bad assumption.
On my '99 if the voltage isn't >=~12.5V it will eventually leave the car nothing but idling. The transmission will not engage. If I remember correctly both the transmission control module and the abs module can be scanned for their current B+ values.
On my '99 if the voltage isn't >=~12.5V it will eventually leave the car nothing but idling. The transmission will not engage. If I remember correctly both the transmission control module and the abs module can be scanned for their current B+ values.
Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD 2.4 T -- ~231k miles
1998 V70 2.4 NA -- ~184k miles
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD 2.4 T -- ~231k miles
1998 V70 2.4 NA -- ~184k miles
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misha
- Posts: 5379
- Joined: 7 December 2008
- Year and Model: '97 850 2.5 20v
- Location: Serbia
- Has thanked: 152 times
- Been thanked: 402 times
Abs module can't affect functionality of transmission....but since it's '99 and modules are married with the car....lack of communication between modules can affect anything because of CAN network.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
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