try to read MID 130 codes... if "operation failed" check 12 to 24 v doubler connectors and fuses in battery box. Seems to me TCU is not powered.
zf freedom line transmission problem
Discussion in 'Volvo Forum' started by rudolph, Dec 27, 2014.
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I does read transmission codes only issues is active code is from engine crank sensor which I unplugged long time ago. If there is extra fuse or relay for transmission where would it be located? I looked over trough fuses in dash and under those but found nothing related to transmission. Also when I check for hardware trough diagnostics menu it does not show which transmission I have all fields are blank ,engine does show all info.I followed instructions from zf manual and checked for voltage after I installed new voltage doubler and there is 23.8 volts on plug that connects to TCU . Is it possible that transmission is stuck in gear and is not in neutral because I drove it when i lost electrical power?Thanks
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it may be what ZF calls "torque locked"IIRC,with engine running,release brakes and let truck roll (or get it rolling)Transmission does not know it is in neutral.Hope this helps.Good luck.
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But this is ZF transmission. Anyone ever had torque locked this one? If nothing else works I would try that. Thanks
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Did you ever get this figured out?
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Yes I did. I had to replace J1939 resistor.
mrtrdrvr Thanks this. -
Have Zf parts Manual and Zf Shop Manual for Freedomline. Put foot on break pedal and hold function and neutral button at same time. Codes will show on display. E7 means brake pedal is not adjusted correctly. 39 means shifter. my 2005 had air leaks 22 of them, little tiny ones as they were fixed things got better. Today it was the air pressure regulator. Its neat driving down the rd and having the beeps because the break pedal need adjustment. Group 524 no.1 release 02 dated 8.2013
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Who still got a freedomline i just get a columbia 2006 with a 12 speed. Any tips?
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Can anyone tell me what can go wrong with the air pressure regulator on the transmission seems like an expensive piece for no more than what it is
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