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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Automatic Transmission - 6L80E) >> Diagnostic Information and Procedures >> DTC P0815, P0816, P0826, or P1876 >> Circuit/System Testing >> Notes

Circuit/System Testing: Notes

WARNING: This page is about a different variant/trim than selected.

P0815

  1. Select the Driver Shift Request parameter.
  2. Disconnect the Automatic Transmission (AT) shift program switch connector.
    • If the parameter status changes from Upshift to Invalid, replace the AT shift program switch.
    • If the parameter status does not change, replace the control solenoid (w/body and TCM) valve assembly.

P0816

  1. Select the Driver Shift Request parameter.
  2. Disconnect the Automatic Transmission (AT) shift program switch connector.
    • If the parameter status changes from Downshift to Invalid, replace the AT shift program switch.
    • If the parameter status does not change, replace the control solenoid (w/body and TCM) valve assembly.

P0826

  1. Inspect the fuse in the ignition 3 voltage circuit for an open.
    • If the fuse is Open, test the ignition 3 and the Tap/Up and Tap/down circuit for a short to ground.
    • If the fuse is OK, test the ignition 3 and the Tap/Up and Tap/down signal circuit for an Open or Short to Voltage.
  2. Test the AT/DSC shift program switch for correct resistance value, 8.11-8.39 ohms.
    • If the resistance is not within specifications, replace the switch assembly.
    • If the resistance is within specifications, replace the control solenoid (w/body and TCM) valve assembly.
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