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Check crimp connectors that serve both rear door locks . . . . ![]() Posted by Mark in Marine [Email] ![]() ![]() In Reply to: rear door lock motors / actuators, TML ![]() ![]() |
First, following what Bobc said, disconnect one motor at a time and retry. Because the two rear doors share two lines, one bad actuator (motor) MIGHT make the other not function, depending on how the motor went bad and whether it causes a short. If one motor of each pair were bad . . . .
The central locking circuit is split Front/Rear. J104 is in common to all four doors. J102 and J103 are common to both rear door lock motors.
I would start there, since we hope you don't have four bad lock motors. I had a very hard time finding the J102 and J103 locations using WIS online, and I had to use my old Win XP version to look them up.
J102 should be Line 49 out of TWICE (BN/YE crimped to two BN/YE wires) for rear locks.
J103 should be Line 20 out of TWICE (GY crimped to two BU/WH wires) for rear locks.
J102 is "Approx 475 mm (19 inches) from branching point connector H43 toward Rear Left door."
J103 is "Approx 55 mm (2 inches) from grounding point G24 branching point Right Hand side direction toward Right Rear door."
G24 is behind the seat member under the right hand seat - CHECK that ground !
H43-2 is a 43 pin connector with only 15 wires populated. From WIS pictures I THINK is close to the TWICE 632 multiconnector, but I am just guessing - maybe one of the mechanics can chime in on that.
Now all of the above is from WIS, and I have not done this precise job myself.
I would find those Gray and Brown/Yellow wires coming from TWICE and probe them to see if you have signal. If it's a TWICE thing, you'll know how to go forward. If not, then find the crimp connectors, probe each side, and check for resistance or open circuits. If they're bad, cut them out, solder in new wire, and insulate well (shrink tubing preferred, but good electrical tape can work).
Best of luck - and if anyone has done this, please share. I plan to maintain my daughters' two 9-5's for a lot more miles, and some of these things may crop up.
Mark in Marine
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