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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 812 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Diagnostic Information and Procedures >> DTC P1810: Invalid State Of The TFP Manual Valve Position Switch Circuit >> Test Description

Test Description

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

  1. 3. This step compares the indicated range signal to the selected manual valve position.
  2. 5. This step tests for correct voltage from the PCM to the AT in-line 20-way connector.
    Fig 1: Diagnostic Trouble Code (DTC P1810) Table (Step 1-2)
    G02111619Courtesy of GENERAL MOTORS CORP.
    Fig 2: Diagnostic Trouble Code (DTC P1810) Table (Step 3-9)
    G02111620Courtesy of GENERAL MOTORS CORP.
    Fig 3: Diagnostic Trouble Code (DTC P1810) Table (Step 10-17)
    G02111621Courtesy of GENERAL MOTORS CORP.