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Home >> Chevrolet >> 2002 >> Astro Van Passenger, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 807 (Transfer Case - NVG 136-NP4) >> Diagnostic Information and Procedures >> DTC C0309: Short To Power On The Motor Control A Circuit Or The Motor Control B Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 2. Tests Motor Control A for an open or short to voltage.
  2. 3. Tests Motor Control B for an open or short to voltage.
  3. 4. Tests for continuity across the motor windings.
Fig 1: DTC C0309
G01643203Courtesy of GENERAL MOTORS CORP.
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