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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 for proper operation of the outside rearview mirror.
  2. 3:  Tests for a shorted outside rearview mirror.
  3. 5:  Tests for a short to ground or voltage in the vertical mirror motor control circuits.
  4. 6:  Tests for a short to ground or voltage in the horizontal mirror motor control circuits.
DTC B2272-B2273

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 
2  Operate the appropriate outside rearview mirror in the UP, DOWN, LEFT and RIGHT directions.
Does the outside rearview mirror operate in all directions?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 
  1. Disconnect the appropriate outside rearview mirror.
  2. Install a scan tool.
  3. Turn ON the ignition, with the engine OFF.
  4. Observe the mirror motor output parameters in the appropriate door control module data list.
  5. Operate the appropriate mirror switch in the UP, DOWN, LEFT and RIGHT directions.
Do all of the mirror motor output parameters change state?		 Go to Step 7  Go to Step 4 
4 Did the outside rearview mirror operate in the horizontal direction? Go to Step 5  Go to Step 6 
5  Test the appropriate vertical mirror motor control circuit(s) 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 11  Go to Step 8 
6  Test the appropriate horizontal mirror motor control circuit(s) 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 11  Go to Step 8 
7 Inspect for poor connections at the harness connector of the appropriate outside rearview mirror. 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 11  Go to Step 9 
8 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 11  Go to Step 10 
9 Replace the appropriate outside rearview mirror. Refer to Mirror Replacement .
Did you complete the replacement?		 Go to Step 11  -
10 Replace the appropriate door module. Refer to Door Control Module Replacement .
Did you complete the replacement?		 Go to Step 11  -
11
  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
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