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The mkiv Supra Owners Club

MANU/ETC switch inoperable


greenslade

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Following a year off the road having a respray, I noticed the MANU button not operating on my '93 N/A auto. I checked that the switch is providing a momentary connection to earth when depressed as I believe it should. It's non-latching and I can't quite remember if it was always that way, I believe the problem lies with the ECU. No 12 V on the feed from pin 18, hence no voltage drop when the the MANU button is pressed.

 

Anyone else had a similar fault? Any other ideas?

 

 

Stephen

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Bit more information....after dismantling the gear change, discovered the switch is working and searching the appropriate ECU pin. And driving, found that the MANU function was operating correctly, but with no indication on the dash. So I think either the ECU is not outfitting an indication, it's not getting to the dash, or the telltale indication isn't working.

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  • 1 month later...
Bit more information....after dismantling the gear change, discovered the switch is working and searching the appropriate ECU pin. And driving, found that the MANU function was operating correctly, but with no indication on the dash. So I think either the ECU is not outfitting an indication, it's not getting to the dash, or the telltale indication isn't working.

 

Hi

 

I am having same issue. Did you get to the root of the problem?

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