C1243 BPMV Pump Motor Stalled
11-17-2004, 04:53 PM
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1st Gear
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C1243 BPMV Pump Motor Stalled
I have been getting this code set on a regular basis, usually when I start the car cold in the morning. Can you tell me what it means and should I be worried about it. Thanks for your help. 
Last edited by marndtu2; 11-17-2004 at 07:05 PM.
11-18-2004, 10:42 AM
#3
Burning Brakes
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I always forget that I have an account at alldata.com 
Here ya go!
C1243 BPMV Pump Motor Stalled (Front Mounted EBTCM\BPMV)
Here is the procedure mentioned in steps 6, 7, 8, and 9 above.
Here are some written instructions:
CIRCUIT DESCRIPTION
When the pump motor relay is grounded by the Electronic Brakes and Traction Control Module (EBTCM) , it closes and provides battery voltage to operate the pump.
CONDITIONS FOR SETTING THE DTC
DTC C1243 can be set when the pump motor relay has been commanded off after the pump motor has been on. A malfunction has occurred if the pump motor was on, and the EBTCM sensed a stuck or slowly turning pump motor.
ACTION TAKEN WHEN THE DTC SETS
ABS/TCS/Active Handling (if equipped with RPO JL4) are disabled.
Indicators that turn on:
ABS indicator
Car Icon (TCS indicator)
Messages displayed on the DTC:
Service ABS
Service Traction System
Service Active HNDLG (if equipped with Active Handling RPO JL4)
CONDITIONS FOR CLEARING THE DTC
Condition for DTC is no longer present and scan tool clear DTC function is used.
Fifty ignition cycles have passed with no DTCs detected.
DIAGNOSTIC AIDS
It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.
An intermittent malfunction can be caused by poor connections, broken insulation, or a wire that is broken inside the insulation.
If an intermittent malfunction exists refer to Testing for Electrical Intermittents in Wiring Systems.
TEST DESCRIPTION
The numbers below refer to step numbers on the diagnostic table.
Checks for good pump motor ground.
Checks for good pump motor ground through the BPMV.
Additional information:
Pump Motor
The BPMV contains a motor driven recirculation pump. The pump serves two purposes: 1) During ABS Reduce Pressure events, it transfers fluid from the brake calipers back to the master cylinder; and 2) During traction control, or an Active Handling event, the pump transfers fluid to the brake calipers. The pump and motor are located within the BPMV and are not serviced separately.
Here ya go!
C1243 BPMV Pump Motor Stalled (Front Mounted EBTCM\BPMV)
Here is the procedure mentioned in steps 6, 7, 8, and 9 above.
Here are some written instructions:
CIRCUIT DESCRIPTION
When the pump motor relay is grounded by the Electronic Brakes and Traction Control Module (EBTCM) , it closes and provides battery voltage to operate the pump.
CONDITIONS FOR SETTING THE DTC
DTC C1243 can be set when the pump motor relay has been commanded off after the pump motor has been on. A malfunction has occurred if the pump motor was on, and the EBTCM sensed a stuck or slowly turning pump motor.
ACTION TAKEN WHEN THE DTC SETS
ABS/TCS/Active Handling (if equipped with RPO JL4) are disabled.
Indicators that turn on:
ABS indicator
Car Icon (TCS indicator)
Messages displayed on the DTC:
Service ABS
Service Traction System
Service Active HNDLG (if equipped with Active Handling RPO JL4)
CONDITIONS FOR CLEARING THE DTC
Condition for DTC is no longer present and scan tool clear DTC function is used.
Fifty ignition cycles have passed with no DTCs detected.
DIAGNOSTIC AIDS
It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.
An intermittent malfunction can be caused by poor connections, broken insulation, or a wire that is broken inside the insulation.
If an intermittent malfunction exists refer to Testing for Electrical Intermittents in Wiring Systems.
TEST DESCRIPTION
The numbers below refer to step numbers on the diagnostic table.
Checks for good pump motor ground.
Checks for good pump motor ground through the BPMV.
Additional information:
Pump Motor
The BPMV contains a motor driven recirculation pump. The pump serves two purposes: 1) During ABS Reduce Pressure events, it transfers fluid from the brake calipers back to the master cylinder; and 2) During traction control, or an Active Handling event, the pump transfers fluid to the brake calipers. The pump and motor are located within the BPMV and are not serviced separately.
