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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 340 (Tire Pressure Monitoring System) >> Diagnostic Information and Procedures >> DTC C0750, C0755, C0760, or C0765 >> Circuit/System Verification

Circuit/System Verification

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  1. Using the EL-46079/J-46079  tool, activate each tire pressure sensor and record each sensors transmission data and physical location. Verify EL-46079/J-46079  tool displays the 8-digit ID number, accurate tire pressure ±27.6 kPa (4 psi), Learn Mode, and at least a 1/4 graph signal strength displayed.
    • If any of the parameters listed above are not displayed, replace the suspect tire pressure sensor.
  2. With the scan tool, verify tire pressure sensors ID and locations displayed on the scan tool match the IDs and locations recorded from the special tool.
  3. Enable the TPM learn mode. Use the EL-46079/J-46079  tool in simulate mode to learn 4 simulated sensor transmissions into the RCDLR. Verify that all 4 simulated sensor locations, IDs, and tire pressures displayed on the TPM special tool match the corresponding scan tool parameters displayed.
    • If the scan tool does not match, replace the RCDLR.
  4. Test drive the vehicle above 40 km/h (25 mph) for greater than 2 minutes. With the scan tool, observe the suspect Pressure Sensor Mode data parameter. Verify the sensor mode changes to Rolling.
    • If the Pressure Sensor Mode does not change, replace the suspect tire pressure sensor.
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