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How to diagnose these transmission codes?


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#1 atikovi

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Posted 09 December 2009 - 05:52 PM

I pulled the following current code: P2033 Overcurrent cutout in transmission at a duty cycle>0 and these two stored codes: P2056 Actual position of turning angle sensor plausibility and P202A Gear cannot be engaged when clutch is closed. If I erase them, they will come back in 10 or 20 miles and the gear indicator goes to 3 dashes. Any suggestions where to look first?

#2 tolsen

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Posted 10 December 2009 - 01:42 AM

I pulled the following current code: P2033 Overcurrent cutout in transmission at a duty cycle>0 and these two stored codes: P2056 Actual position of turning angle sensor plausibility and P202A Gear cannot be engaged when clutch is closed. If I erase them, they will come back in 10 or 20 miles and the gear indicator goes to 3 dashes. Any suggestions where to look first?

Check connectors to gear change motor and gear position sensor. Get someone that has Win-star or MB Star to reteach the gears.

#3 atikovi

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Posted 11 December 2009 - 04:20 PM

Check connectors to gear change motor and gear position sensor. Get someone that has Win-star or MB Star to reteach the gears.

I do have an MB Star. I'm unable to do the clutch actuator adjustment teach procedures but I'll post that in a new message. Any way to test the gear position sensor? Thats the same thing they call the turning angle sensor?

#4 mzeeb

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Posted 11 December 2009 - 07:07 PM

I do have an MB Star. I'm unable to do the clutch actuator adjustment teach procedures but I'll post that in a new message. Any way to test the gear position sensor? Thats the same thing they call the turning angle sensor?

Just curious where you got the MB Star software / interface ? :smile_anim:
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#5 atikovi

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Posted 12 December 2009 - 04:47 AM

Just curious where you got the MB Star software / interface ? :smile_anim:

On Ebay. It's a Chinese knock-off.

#6 atikovi

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Posted 12 December 2009 - 06:58 AM

Had another thought. Can I take the angle sensor off my cdi and put it on this gasser to test it? They have the same part number in the EPC. How hard is it to get too?

#7 tolsen

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Posted 12 December 2009 - 07:22 AM

Had another thought. Can I take the angle sensor off my cdi and put it on this gasser to test it? They have the same part number in the EPC. How hard is it to get too?

Jack up rear end LHS. Remove road wheel and inner plastic wheel arch. This is best method as improves access. The gear position sensor is just a simple potentiometer. Easily checked using a multimeter. The Chinese MB Star should be able to teach gear positions if it is worth its salt. Both clutch adjustment and gear postion teaching may not work if there are component or wiring faults.

#8 tolsen

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Posted 12 December 2009 - 07:23 AM

Had another thought. Can I take the angle sensor off my cdi and put it on this gasser to test it? They have the same part number in the EPC. How hard is it to get too?

Jack up rear end LHS. Remove road wheel and inner plastic wheel arch. This is best method as improves access. The gear position sensor is just a simple potentiometer. Easily checked using a multimeter. The Chinese MB Star should be able to teach gear positions if it is worth its salt. Both clutch adjustment and gear postion teaching may not work if there are component or wiring faults.




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