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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1700 (Automatic Transmission - 6T75 - DTC P0218 To DTC P0977) >> DTC P0722 or P0723 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, remove the control valve body cover. Refer to Control Valve Body Cover Replacement .
  2. Connect the TCM harness connector.
  3. Disconnect the output speed sensor (OSS) harness connector from the control solenoid (w/body and TCM) valve assembly.
  4. Connect the J 38522  between the supply voltage terminal B and ISS signal terminal C at the control solenoid (w/body and TCM) valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Input Shaft Speed/Output Shaft Speed Input Test for further instructions.
  5. Set the J 38522  signal to 8 volts, the frequency to 120 and the percent duty cycle to 50.
  6. Ignition ON, observe the scan tool Transmission OSS parameter. The scan tool Transmission OSS parameter should be between 100-400 RPM.
    • If not within the specified range, replace the control solenoid (w/body and TCM) valve assembly.
  7. If all circuits test normal, test or replace the output speed sensor.
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