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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 834 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Diagnostic Information and Procedures >> DTC P1860: TCC PWM Solenoid Valve >> Test Description

Test Description

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

  1. 4. This step tests for voltage to the solenoid.
  2. 5. This step tests the ability of the PCM and wiring to control the ground circuit.
  3. 7. This step tests the resistance of the TCC PWM solenoid valve and the automatic transmission wiring harness assembly.
    Fig 1: Diagnostic Trouble Code (DTC P1860) Table (Step 1-4)
    G02112060Courtesy of GENERAL MOTORS CORP.
    Fig 2: Diagnostic Trouble Code (DTC P1860) Table (Step 5-12)
    G02112061Courtesy of GENERAL MOTORS CORP.
    Fig 3: Diagnostic Trouble Code (DTC P1860) Table (Step 13-20)
    G02112062Courtesy of GENERAL MOTORS CORP.
    Fig 4: Diagnostic Trouble Code (DTC P1860) Table (Step 21)
    G02112063Courtesy of GENERAL MOTORS CORP.
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