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Home >> Chevrolet >> 1999 >> Blazer 4D Utility, 4WD, Automatic >> Repair and Diagnosis >> Transmission >> Transfer Case >> Transfer Case - Diagnosis - New Venture 233 (SELECTABLE 4WD) >> Diagnostic Tests >> DTC 3: TCCM Motor Circuit >> Test Description

Test Description

  1. 2

    This step tests the battery positive voltage circuit (CKT 1640) for an open or high resistance.

  2. 3

    This step inspects the ATC fuse for an open.

  3. 6

    This step tests the ground circuit.

  4. 8

    This step tests the motor control "A" and "B" circuits.
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