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Test Description

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The number(s) below refer to the step number(s) on the diagnostic table.

  1. 2:  Listen for an audible click when the door lock relay operates. Command both the ON and OFF states. Repeat the commands as necessary.
  2. 3:  Verifies that the Body Control Module (BCM) is providing voltage to the door lock relay.
  3. 4:  Tests for an open in the ground circuit to the door lock relay.
  4. 5:  Tests if voltage is constantly being applied to the door lock relay.
  5. 12:  After replacement of the BCM you must calibrate the new module for proper operation.
DTC B3137 or B3138

Step Action Yes No
Schematic Reference: Door Lock/Indicator Schematics 
1 Did you perform the Power Door Systems Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Door Systems 
2 
  1. Install a scan tool.
  2. With a scan tool, command the door lock relay ON and OFF.
Does the door lock relay turn ON and OFF with each command?		 Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS Go to Step 3 
3 
  1. Turn OFF the ignition.
  2. Remove the door lock relay.
  3. Probe the door lock control circuit of the door lock relay with a test lamp that is connected to a good ground.
  4. With a scan tool, command the door lock relay ON and OFF.
Does the test lamp turn ON and OFF with each command?		 Go to Step 4  Go to Step 5 
4 
  1. Connect a test lamp between the door lock control circuit and the ground circuit of the door lock relay.
  2. With a scan tool, command the door lock relay ON and OFF.
Does the test lamp turn ON and OFF with each command?		 Go to Step 8  Go to Step 10 
5  Does the test lamp remain illuminated with each command? Go to Step 7  Go to Step 6 
6 Test the door lock control circuit of the door lock relay for a short to ground. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?		 Go to Step 13  Go to Step 9 
7 Test the door lock control circuit of the door lock relay for a short to voltage. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?		 Go to Step 13  Go to Step 9 
8 Inspect for poor connections at the door lock relay. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS .
Did you find and correct the condition?		 Go to Step 13  Go to Step 11 
9 Inspect for poor connections at the harness connector of the BCM. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS .
Did you find and correct the condition?		 Go to Step 13  Go to Step 12 
10 Repair the ground circuit of the door lock relay. Refer to WIRING REPAIRS .
Did you complete the repair?		 Go to Step 13  -
11 Replace the door lock relay.
Did you complete the replacement?		 Go to Step 13  -
12  Replace the BCM. Refer to BODY CONTROL MODULE REPLACEMENT .
Did you complete the replacement?		 Go to Step 13  -
13
  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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