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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 661 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Diagnostic Information and Procedures >> DTC P1860: Open, Short To Ground Or Short To Power In The TCC PWM Solenoid Valve Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. 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. 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 (AT) wiring harness assembly.
    Fig 1: DTC P1860 (1 Of 3)
    G01972807Courtesy of GENERAL MOTORS CORP.
    Fig 2: DTC P1860 (2 Of 3)
    G01972808Courtesy of GENERAL MOTORS CORP.
    Fig 3: DTC P1860 (3 Of 3)
    G01972809Courtesy of GENERAL MOTORS CORP.
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