Transmission shifter shifts fine through P, R, N, D but gers not engaging

Tiny
DIYMECHANIC
  • MEMBER
  • 2002 HYUNDAI SANTA FE
  • 2.7L
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 171,000 MILES
How do I test the Shift connector on top of transmission. What power conditions do I expect to see at the connector at the different shifter positions.
I need a wiring diagram
Thank you
PS: I have replaced both Input and Output sensors but same issues.
P0755 and P0766 Codes
Saturday, October 24th, 2015 AT 3:31 PM

11 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
See if shifter on trans actually moves check for continuity see pics. Your trans is probably shot though
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Monday, October 26th, 2015 AT 8:26 AM
Tiny
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Hmac300
Thanks for the great info.
Do you know what voltage I should see at these points.
Also would you have access to a wiring diagram of the shift solenoids connector and what test voltage should I see at the various pins on the harness connector
Thank you
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Monday, October 26th, 2015 AT 11:26 AM
Tiny
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If you were not seeing voltage to shifter the check engine light would go on. So you don't need to check I just think you ought to go to a trans guy as it may not have pressure or clutch pak is gone
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Monday, October 26th, 2015 AT 12:02 PM
Tiny
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Check engine light came on and DTC above (P0755, P0766) came on. Have removed shift solenoids and tested solenoids good.
I need to test my shift solenoid connector if it is supplying the power needed for the solenoids.
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Monday, October 26th, 2015 AT 2:11 PM
Tiny
HMAC300
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There are no voltage tests for what you want it's all resistance see pics. Check resistance of connector to tcm as well should not be over 5 ohm
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Monday, October 26th, 2015 AT 3:22 PM
Tiny
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I apologize for being so dumb but where is the AT relay located. I did not see one in the fuse box by the battery and there was none in the one by the driver left knee.
Thanks
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Monday, October 26th, 2015 AT 5:47 PM
Tiny
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PS: how do I disconnect the TCM to test the harness. Is there a clip or push latch and where exactly is it located?
My solenoids tested 3.6-0hms each at the solenoids but now I need to test the solenoid through the harness as you suggested.
Thank you
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Monday, October 26th, 2015 AT 5:51 PM
Tiny
HMAC300
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Ay is located below center of dash near srs control module. Tcm below center of dash no pic for either pic is where srs module is.
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Monday, October 26th, 2015 AT 6:12 PM
Tiny
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New information when I unplugged the shift solenoids connector at the transmission I got these errors:
1. P0750 shift solenoid A
2. P0755 shift solenoid B
3. P0760 shift solenoid C
4. P0765 shift solenoid D
5. P1529 Manufacturer Control
6. Torque Converter/Clutch cct open

Does this indicate that my shift solenoid harness/connector wires are good?
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Wednesday, October 28th, 2015 AT 5:21 AM
Tiny
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No like I said the first time i'd bet your trans is trashed and there is a problem with clutch/seals or not enough oil pressure. I fyou checked the wires from trans to tcm and they have low ohms then it'snot the harness nor the shifter. Take it to a trans guy. I have no further comments or suggestions.
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Wednesday, October 28th, 2015 AT 6:46 AM
Tiny
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Thanks a bunch for your help.
Much appreciated
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Wednesday, October 28th, 2015 AT 7:52 AM

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