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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 72 (Automatic Transmission Diagnosis - 4L80-E (Diesel)) >> 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 Cab & Chassis Sierra 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. 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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