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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1519 (Door System, Mirror System & Window System) >> Diagnostic Information and Procedures >> DTC B2274-B2275 >> Test Description

Test Description

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. 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:  Tests the window motor current draw.
  2. 3:  Tests a window for proper operation. If a window sticks or binds, this condition must be repaired first.
DTC B2274-B2275

Step Action Yes No
Schematic Reference: Door Control Module Schematics 
Connector End View Reference: Power Door Systems Connector End Views 
1 Did you perform the Door Systems Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Door Systems 
  1. Install a scan tool.
  2. Turn the ignition on, with the engine off.
  3. With a scan tool, observe the window motor load parameter in the appropriate Door Control Module data list.
  4. Activate the appropriate window switch to the UP and DOWN positions.
Does the scan tool display greater than 45 amps?
Go to Step 3  Go to Step 4 
Inspect the appropriate window for a sticking or binding condition.
Did you find and correct the condition?
Go to Step 8  Go to Step 5 
4 Inspect for poor connections at the harness connector of the appropriate door module. 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 8  Go to Step 6 
5 Inspect for poor connections at the harness connector of the appropriate window motor. 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 8  Go to Step 7 
6 Replace the appropriate door module. Refer to Door Control Module Replacement .
Did you complete the replacement?
Go to Step 8  -
7 Replace the appropriate window motor. Refer to Window Regulator Replacement .
Did you complete the replacement?
Go to Step 8  -
8
  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 2  System OK