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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1626 (Automatic Transmission - 4L80-E - Service & Replacement) >> Diagnostic Information and Procedures >> DTC P0719: Open TCC/Stop Lamp Switch Circuit During Accelerations >> Test Description

Test Description

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The numbers below refer to the step numbers on the diagnostic table.

  1. 4. This step tests for TCC/Stop lamp switch voltage to the PCM connector.
  2. 7. This step isolates the TCC/Stop lamp switch as a source for setting the DTC.
  3. 10. This step tests for a short to ground in the brake fuse circuit (CKT 441).
  4. 12. This step tests for a short to ground in the TCC brake switch signal circuit (CKT 420), from the TCC/Stop lamp switch to the PCM.
  5. 13. This step isolates the PCM as a source for causing the fuse to open.
Fig 1: DTC P0719 (Steps 1 - 6)
G01952170Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0719 (Steps 7 - 15)
G01952171Courtesy of GENERAL MOTORS CORP.
Fig 3: DTC P0719 (Steps 16 - 17)
G01952172Courtesy of GENERAL MOTORS CORP.
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