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Home >> Chevrolet >> 2001 >> Cavalier LS, 2.2 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 206 (Entertainment System) >> Diagnostic Information and Procedures >> DTC B1780 >> Test Description

Test Description

WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 2:  After clearing the DTCs and theft information, the radio relearns the VIN upon cycling the ignition switch.
  2. 3:  After completing the repair procedure, clear all DTCs.
DTC B1780

Step Action Yes No
1 Did you perform the Radio/Audio System Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Radio/Audio System 
2 
  1. Install a scan tool.
  2. Use the scan tool to clear the DTCs.
  3. Perform radio setup procedure. Refer to Radio Setup .
Does the DTC Reset?		 Go to Step 3  System OK
3 
IMPORTANT: Perform the setup procedure after replacing the radio.
Replace the radio. Refer to Radio Replacement  and Radio Setup .Did you complete the replacement?		 System OK -
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