Coolant Circulation Pump: Difference between revisions
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Refer to: [[WIS 83.40 Automatic Climate Control (ACC) or Heating Ventilation and Air Conditioning (HVAC)]] | |||
==Description - Coolant Circulation Pump== | |||
The Coolant Circulation Pump (A31/m1) is also known as - "Auxiliary Water Pump". | |||
Edit required. | |||
==Issues - Coolant Circulation Pump== | |||
* It may be hard to notice that your coolant circulation pump (A31/m1) is not working properly. | |||
* If the pump is dead, then in cold weather the car could not be heated more than 30C even if ACC was set to "HI". | |||
==Parts - Coolant Circulation Pump== | |||
* 0 392 020 066" or 0392020066 | |||
* A2208350064 | |||
==Diagnosis - Coolant Circulation Pump== | |||
* Error code: B1416 "The component or the signal line to the component A31m1 (coolant circulation pump) has short circuit to positive or overload." | |||
* Note: error code B1416 is thrown if coolant circulation pump draws >5A current. | |||
I removed the pump and connected it to 12V DC. The pump did not spin at all (it was completely stuck and I could not rotate it even by hand) and the multimeter showed that it consumed 5.5A current. | ==Testing - Coolant Circulation Pump== | ||
* I removed the pump and connected it to 12V DC. The pump did not spin at all (it was completely stuck and I could not rotate it even by hand) and the multimeter showed that it consumed 5.5A current. | |||
'''Conclusion:''' | '''Conclusion:''' | ||
| Line 22: | Line 24: | ||
While you can buy a brand new pump for 140 EUR you might as well try to repair it. The reference shows how you can do it. | While you can buy a brand new pump for 140 EUR you might as well try to repair it. The reference shows how you can do it. | ||
http://www.benzworld.org/forums/showthread.php?t=1271866http://www.benzworld.org/forums/w210-e-class/1570724-my-attempt-replacing-transmission-plug.html | ==DIY Procedures - Coolant Circulation Pump== | ||
===Repair - Coolant Circulation Pump=== | |||
Acknowledgement of contribution by BenzWorld Member, Pokseva. | |||
Refer to: http://www.benzworld.org/forums/showthread.php?t=1271866http://www.benzworld.org/forums/w210-e-class/1570724-my-attempt-replacing-transmission-plug.html | |||
Revision as of 01:10, 18 March 2015
Refer to: WIS 83.40 Automatic Climate Control (ACC) or Heating Ventilation and Air Conditioning (HVAC)
Description - Coolant Circulation Pump
The Coolant Circulation Pump (A31/m1) is also known as - "Auxiliary Water Pump".
Edit required.
Issues - Coolant Circulation Pump
- It may be hard to notice that your coolant circulation pump (A31/m1) is not working properly.
- If the pump is dead, then in cold weather the car could not be heated more than 30C even if ACC was set to "HI".
Parts - Coolant Circulation Pump
- 0 392 020 066" or 0392020066
- A2208350064
Diagnosis - Coolant Circulation Pump
- Error code: B1416 "The component or the signal line to the component A31m1 (coolant circulation pump) has short circuit to positive or overload."
- Note: error code B1416 is thrown if coolant circulation pump draws >5A current.
Testing - Coolant Circulation Pump
- I removed the pump and connected it to 12V DC. The pump did not spin at all (it was completely stuck and I could not rotate it even by hand) and the multimeter showed that it consumed 5.5A current.
Conclusion:
While you can buy a brand new pump for 140 EUR you might as well try to repair it. The reference shows how you can do it.
DIY Procedures - Coolant Circulation Pump
Repair - Coolant Circulation Pump
Acknowledgement of contribution by BenzWorld Member, Pokseva.