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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1832 (Data Communication System) >> Diagnostic Information and Procedures >> DTC U2102 or U2103 >> Conditions for Clearing the MIL/DTC

Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
DTC U2102 or U2103

Step Action Yes No
Schematic Reference: Data Communication Schematics 
Connector End View Reference: Data Communication Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Install the scan tool.
  2. Turn the ignition ON, with the engine OFF.
  3. Retrieve DTCs.
Did you record any of the following DTCs, with a current status?
  • U0073
  • U2100
  • U2104
  • Any DTC in range of U0100-U0299, except U0107
  • Any DTC in range of U2105-U2199
Go to Diagnostic Trouble Code (DTC) List - Vehicle Go to Step 3 
3 Attempt to communicate with all modules that communicate on CAN bus, conform to vehicle options. See circuit description for the list of modules and options.
Does the scan tool communicate with all modules that communicate on CAN bus?
Go to Step 4  Go to Data Link References  for the appropriate loss of communication procedure
4
  1. Program the module that had the DTC U2102 or U2103 set. Refer to Control Module References for programming.
  2. Cycle the ignition.
  3. Retrieve DTCs.
Is the DTC U2102 or U2103 still current?
Go to Step 5  Go to Step 6 
5 Replace the control module that had set DTC U2102 or U2103. Refer to Control Module References for replacement, setup and programming.
Did you complete the replacement?
Go to Step 6  -
6
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?
Go to Step 1  System OK