W126 Central Locking Pump
07-08-2018, 06:56 AM
#1
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W126 300SEL W126 420SEL
W126 Central Locking Pump
How can I test this pump when it is out of the car?
The pump has a 2 pin connector for 12V and three
pins next to that. There is a single vacuum connector.
Any thoughts appreciated...………………………...mw
The pump has a 2 pin connector for 12V and three
pins next to that. There is a single vacuum connector.
Any thoughts appreciated...………………………...mw
07-09-2018, 01:48 PM
#4
Out Of Control!!
Very strange, your 126 pump is showing a total of six pins, yet you have indicated that you only have five------in any event there are no bench test for the pump. All electrical and pneumatic tests are accomplished while connected.
07-23-2018, 10:42 AM
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Location: Central KY, and Nashville, TN
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89 300CE, 62 220SEb
also check circuit board
Put a hot and a ground onto the 12v. The three wire connector is for the truck lock wiring. I just swapped one on my 16V. It may show that it is a 6 pin, it seemed the plastic connector guide (as I have always referred to them) counts as a pin now a days. Also, pop the lid and look at the circuit board within. Mine was crusty!
Last edited by usarover; 07-23-2018 at 10:43 AM. Reason: Typo
