LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Automatic Transmission - 8L90 (M5U) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P0815, P0816, Or P0826: Up And Down Shift Switch Circuit >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform the Circuit/System Verification and Circuit/System Testing first.
  2. Ignition Off.
  3. Disconnect the S3 Transmission Shift Lever harness connector.
  4. Test for 5900 - 6300 Ω between terminals 3 and 4 on the S3 Transmission Shift Lever.
    • If not within the specified range 

      Replace the S3 Transmission Shift Lever.

    • Go to next step: If within the specified range 
  5. Test for 500 - 750 Ω between terminals 3 and 4 on the S3 Transmission Shift Lever, while holding down the plus (+) switch.
    • If not within the specified range 

      Replace the S3 Transmission Shift Lever.

    • Go to next step: If within the specified range 
  6. Test for 1800 - 2200 Ω between terminals 3 and 4 on the S3 Transmission Shift Lever, while holding the minus (-) switch.
    • If not within the specified range 

      Replace the S3 Transmission Shift Lever.

    • Go to next step: If within the specified range 
  7. All OK.
scientia non olet · About LEMON Manuals