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Conditions for Clearing the DTC

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
DTC B3873

Step Action Yes No
Schematic Reference:  Wiper/Washer System Schematics  
Connector End View Reference:  Wiper/Washer System Connector End Views  
1 Did you perform the Wiper/Washer Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Wiper/Washer 
2
  1. Turn the ignition ON.
  2. Press the windshield washer switch.
Does the windshield washer pump operate?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3
  1. Remove the harness connector from the windshield washer pump.
  2. Remove the harness connector from the BCM that contains the Windshield Washer Pump control circuit.
  3. Test the Windshield Washer Pump control circuit between the BCM harness connector and the pump harness connector for a short to ground, short to voltage or an open circuit. Refer to Circuit Testing in Wiring Systems.
Did you find and correct the condition?
Go to Step 8  Go to Step 4 
4 With the windshield washer pump disconnected, test the ground circuit of the windshield washer pump harness connector for an open. Refer to Circuit Testing in Wiring Systems.
Did you find and correct the condition?
Go to Step 8  Go to Step 5 
5
  1. Connect a jumper between the ground circuit on the Windshield Washer Pump and a good ground.
  2. Measure the on state current using a DMM. Connect a 10 amp fuse protected jumper between the Windshield Washer Pump positive terminal and B+. Refer to Circuit Testing in Wiring Systems.
Is the current measurement greater than 5.5 Amps?
Go to Step 6  Go to Step 7 
6 Replace the windshield washer pump. Refer to Washer Pump Replacement .
Did you complete the action?
Go to Step 8  -
7 Replace the BCM. Refer to Body Control Module Replacement in Body Control Systems.
Did you complete the action?
Go to Step 8  -
8
  1. Replace all disconnected connectors.
  2. Clear the DTC using the Tech 2.
  3. Operate the system to verify the repair.
Does the DTC reset?
Go to Step 1  System OK