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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 87 (Automatic Transmission Diagnosis - ALLISON) >> Diagnostic Tests >> DTC P0712: Transmission Fluid Temperature Sensor Circuit - Low Input (High Temperature) >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The numbers listed below refer to step numbers in the diagnostic procedure:

  1. 4

    This step tests 5-volt reference voltage.

  2. 5

    This step tests for unrealistic changes in transmission fluid temperature.

  3. 6

    This step tests the TFT sensor and internal wiring harness.

  4. 7

    This step tests the wiring harness for opens or shorts.

  5. 9

    This step tests the resistance of the TFT sensor.

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