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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1993 (Automatic Transmission - 4T45-E - DTC P0218 To DTC P0961) >> DTC P0716 or P0717 (Non-Hybrid) >> Circuit/System Testing (Non-Hybrid)

Circuit/System Testing (Non-Hybrid)

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: Additional DTCs may set when disconnecting the automatic transmission inline 20-way connector.
  1. Ignition OFF, disconnect the AT inline 20-way connector and install the J 44152  on the transmission side.
  2. Measure the resistance between the ISS high signal circuit terminal S and the ISS low signal circuit terminal V. The resistance should be between 625-835 ohms.
    • If not within the specified range test the internal transmission harness / ISS.
  3. Install the J 44152  on the harness side.
  4. Disconnect the TCM connector.
  5. Test for less than 10 ohms between terminal S of the jumper harness and terminal 3 of the TCM connector.
    • If greater than the specified value, check circuit for a Open/High resistance.
  6. Test for less than 10 ohms between terminal V of the jumper harness and terminal 26 of the TCM connector.
    • If greater than the specified value, check circuit for a Open/High resistance.
  7. Test for infinite resistance between the jumper harness terminal S and ground, and between terminal V and ground.
    • If not the specified value, check each circuit for a short to ground.
  8. If all circuits test normal replace the TCM.
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