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Home >> GMC >> 2011 >> Yukon Base, 5.3 3 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Automatic Transmission - 2ML70 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Control Solenoid Valve and Transmission Control Module Assembly Output Shaft Speed Input Test >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect the wiring harness connector from the B14A Automatic Transmission Output Shaft Speed Sensor.
  2. Connect the red lead of J 38522  generator to the OSS voltage circuit terminal A and the black lead to the OSS signal circuit terminal B.
    1. Adjust the J 38522  generator Signal to 8 volts, the Frequency to 120 and the Percent Duty Cycle to 50.
    2. Ignition ON, verify the Transmission OSS parameter display is 100-400 RPM.