Operation CHARM: Car repair manuals for everyone.

Checking Electrical Function




Preliminary operation:
Checking function of interior central locking. Checking Function











Special tools


Commercially available tool
Multimeter e.g. Sun, DMM-5


Preparing test
1. Remove supply pump (M14/2). Service and Repair
2. Connect junction box with test cable harness in accordance with the wiring diagram.


Prerequisites for test
1. Battery voltage 11 - 14 V.






Test