I can't get 3rd and 4th gear, looking through the manual, I have found 3 unit solenoid shift set, how would you test this set?..

rather than taking the gearbox to bits, is there any easy way to test it?..

and does the autobox ecu control it?..

 

Is it the ecu that controls the gears at speed range?.. and is it 3rd & 4th gear?

 

Thanks

The solenoids are as you mentioned operated by the auto box ecu, all of the solenoids are testable for resistance value and so are the cable to the box/ecu.

 

Dealing with the testing values does need some level of electrical competance and understanding and of course a suitable test meter.

 

I will get you the exact data from the workshop in the morning but in essence by identifying each cable serving the individial solenoids the circuit serving them can be tested, assuming there is no cable faults you should be able to read the ohms value of the winding in each solenoids and match them against the correct figures, most of this will be done from the large connectors under the bonnet on the drivers side wing...so no dirty dealing under the car...yet, part two tomorrow :D

 

Jeff TT,

That's brill thanks for the information Jeff - Also, am I right in thinking that shift solenoid B controls 3rd and 4th gear.. I am clutching at straws but I wanna make sure I am in the right direction.