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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1087 (Entertainment System) >> Diagnostic Information and Procedures >> DTC B1025, B1035, B1045, or B1055: Audio Output 1-4 Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. 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:  This step verifies that the DTC is still present.
  2. 3:  This step isolates the fault condition.
DTC B1025, B1035, B1045, or B1055

Step Action Yes No
Schematic Reference: Radio/Audio System Schematics 
Connector End View Reference: Entertainment Connector End Views 
1 Did you perform the Entertainment System Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Entertainment System 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With the scan tool, monitor the DTC Information for DTC B1025.
Does the scan tool indicate that DTC B1025 is current?
Go to Step 3  Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Test the speaker outputs from the radio for a short to ground or voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 6  Go to Step 4 
4 Inspect for poor connections at the harness connector of the radio. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 6  Go to Step 5 
5
IMPORTANT: Perform the radio setup procedure for the radio.
Replace the radio. Refer to Radio Replacement  and to Radio Setup .Did you complete the replacement?
Go to Step 6  -
6 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 2