Chet Zerlin
Jedi Trainee
Offline
Hi all!
Yesterday while driving my BN6 in overdrive it suddenly shifted out of overdrive and into third (regular) gear. From that point on the overdrive on/off switch had no effect on anything. When I got home I did the ignition on, engine off, in 4th gear and turn the overdrive switch on....no clicking of any type from the solenoid.
I'm thinking that since the overdrive just stopped working where just before it was working fine it might be as simple as one of the switches or relays failed and not the overdrive itself (at least that's what I'm hoping!). So for now I'm assuming that my problem is electrical. Reading through some prior posts (and online articles) the testing of the electrical system linked to the solenoid (after doing that simple "click" test that I did ) seems to assume that the solenoid is ok (i.e. each time it involves hearing or not hearing that clicking sound). But if the solenoid itself is bad seems to me that every test of those electrical components would result in a negative result even if they are all ok.
So should my first step be to see if the solenoid itself is ok and then tracing back? If so could someone detail the best (and easiest) way to test it?
On the other hand, it would certainly be easy to first check the continuity of the dash switch to see if it is working and then check the shift switch on the side of the gearbox to see if it is working. Or perhaps turn on the ignition, put the dash switch on, put it in 4th gear and see if there are 12 volts going to the solenoid. Thereafter I would appreciate some guidance on the easiest way to test the throttle switch and the overdrive relay.
What are the collective thoughts about where to begin?
All suggestions or advice are appreciated!
Thanks!
Chet
Yesterday while driving my BN6 in overdrive it suddenly shifted out of overdrive and into third (regular) gear. From that point on the overdrive on/off switch had no effect on anything. When I got home I did the ignition on, engine off, in 4th gear and turn the overdrive switch on....no clicking of any type from the solenoid.
I'm thinking that since the overdrive just stopped working where just before it was working fine it might be as simple as one of the switches or relays failed and not the overdrive itself (at least that's what I'm hoping!). So for now I'm assuming that my problem is electrical. Reading through some prior posts (and online articles) the testing of the electrical system linked to the solenoid (after doing that simple "click" test that I did ) seems to assume that the solenoid is ok (i.e. each time it involves hearing or not hearing that clicking sound). But if the solenoid itself is bad seems to me that every test of those electrical components would result in a negative result even if they are all ok.
So should my first step be to see if the solenoid itself is ok and then tracing back? If so could someone detail the best (and easiest) way to test it?
On the other hand, it would certainly be easy to first check the continuity of the dash switch to see if it is working and then check the shift switch on the side of the gearbox to see if it is working. Or perhaps turn on the ignition, put the dash switch on, put it in 4th gear and see if there are 12 volts going to the solenoid. Thereafter I would appreciate some guidance on the easiest way to test the throttle switch and the overdrive relay.
What are the collective thoughts about where to begin?
All suggestions or advice are appreciated!
Thanks!
Chet
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