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Home >> Cadillac >> 2003 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 451 (Cellular Communication System) >> Diagnostic Information and Procedures >> DTC B2482: Cellular Phone Select Service Switch Range/Performance >> Test Description
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Test Description

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The number below refers to the step number on the diagnostic table.

  1. 2:  This step tests the at rest state of the keypad signal circuit.
DTC B2482

Step Action Value(s) Yes No
Schematic Reference: OnStar Schematics 
Connector End View Reference: Cellular Communication Connector End Views 
1 Did you perform the Cellular Communications Diagnostic System Check? - Go to Step 2  Go to Diagnostic System Check - Cellular Communication 
2 
  1. Turn the ignition ON, with the engine OFF.
  2. Measure the voltage from the keypad signal circuit at the vehicle communication interface module (VCIM) connector to a good ground.
Does the voltage measure greater than the specified value?		 0 V Go to Step 3  Go to Step 4 
3 Test the keypad signal circuit for a short to voltage or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 9  Go to Step 5 
4 Test the keypad supply voltage circuit for an open or short. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 9  Go to Step 6 
5 Inspect for poor connections at the harness connector of the 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 9  Go to Step 7 
6 Inspect for poor connections at the harness connector of the VCIM. Refer toTesting for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 9  Go to Step 8 
7 Replace the rearview mirror. Refer to Rearview Mirror Replacement in Stationary Windows.
Did you complete the replacement?		 - Go to Step 9  -
8
IMPORTANT: Perform the OnStar setup procedure.
Replace the VCIM. Refer to Communication Interface Module Replacement .Did you complete the replacement?		 - Go to Step 9  -
9
  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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