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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Automatic Transmission Diagnosis - 4L80-E) >> Diagnostic Tests >> DTC P0712: Transmission Fluid Temperature Sensor Circuit - Low Input >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 GMC Sierra, 2002 Chevrolet Suburban, and 2002 Chevrolet 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. 3

    This step tests for a short to ground or a skewed sensor by verifying the fault still exists.

  2. 4

    This step tests for an internal fault within the transmission by creating an open.

  3. 6

    This step inspects the TFT sensor signal circuit (1227) of the transmission wiring harness assembly for being shorted to ground.

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