LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2018 >> XT5 Base, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Electronic Transmission Range Select System >> Diagnostic Information and Procedures >> DTC P17A7-P17A9 >> Component Testing
September 30: LEMON manuals is back up on a temporary server! Slowness is possible

Component Testing

  1. Ignition OFF, disconnect the X1 harness connector at the S3 Transmission Shift Lever.
  2. Test for 3 - 3.5 K Ω between the signal circuit terminal 21 and the low reference circuit terminal 20, with the Park Button Switch NOT depressed.
    • If not between 3 - 3.5 K Ω or infinite resistance 

      Replace the S3 Transmission Shift Lever and repeat step 2. If issue still occurs, replace the S156 Transmission Shift Lever Knob.

    • Go to next step: If between 3 - 3.5 K Ω 
  3. Test for 1 - 1.5 K Ω between the signal terminal 21 and the low reference circuit terminal 20, with the Park Button Switch depressed.
    • If not between 1 - 1.5 K Ω 

      Replace the S3 Transmission Shift Lever and repeat step 3. If issue still occurs, replace the S156 Transmission Shift Lever Knob.

    • Go to next step: If between 1 - 1.5 K Ω 
  4. Test for infinite resistance between each terminal and the sensor housing/case.
    • If less than infinite resistance 

      Replace the S3 Transmission Shift Lever and repeat step 4. If issue still occurs, replace the S156 Transmission Shift Lever Knob.

    • Go to next step: If infinite resistance 
  5. All OK
scientia non olet · About LEMON Manuals