Originally Posted by Bill Dearborn

The wires are part of several harnesses. The FSM isn't clear on which harness they are part of. For instance, in the diagram above you can see connector X174 mentioned twice (Pins 34 and 40). That connector connects the Engine and Transmission Harnesses.








What we can see from the schematic is Wire 1612 goes from Pin 9 of the EBCM mounted on the driver's side in front of the serpentine belt on the engine. There is no indication whether this is just a single white wire dropping from the EBCM to the brake wear sensor connector on the driver's side of the cradle or if it's part of a harness that goes that way. The wire for the left front wheel speed sensor goes from the EBCM to the left front wheel so it seems logical there might be a harness that routes and protects those wires. Then we have wire 1613 traveling across the front cradle to reach the right front wear sensor connector. Is that a single thin wire or is it part of a harness? Now we get to the area we are interested in: the right front brake wear sensor is connected to connector X174 Pin 40 and from that pin to the right rear brake wear sensor through 1611. Connector X174 is located on the lower right side of the engine. As I mentioned before this connector connects two harnesses, the engine harness and the transmission harness there is no indication other than the Pin 40 reference that this wire passes through these two harnesses, there isn't any indicator but the schematic that indicates there may be two wires connected at Pin 40. From the FSM, I surmise there is more than one transmission harness. There may be several serially connected to go the distance from the engine to the transmission/other circuits located at the rear of the car. Then wire 1610 travels across the rear cradle to reach the left rear brake wear sensor. From the left rear brake sensor, wire 4081 travels to connector X174 Pin 34 and from there wire(circuit) 4081 connects Pin 34 to EBCM Pin 23. I doubt you would want to replace the harnesses as they would be a huge PIA to replace. Individual wires may be easier to replace but I doubt it would be easy. I suspect the break in your circuit maybe with the wire that runs from the right rear to the left rear brake wear sensors or in the 4081 circuit that is more than likely inside the harness that goes from the rear of the car to connector X174. If the problem is in a connector it could be due to a pushed pin or a broken wire. To start I would double-check the rear sensors to see if there is continuity between Pins 1 and 2 on each of the sensors, then check the continuity of wire 1610, then check the continuity of circuit 4081 from the left rear to the EBCM pin 23.

As for replacing broken wires, I would rather splice them.

Bill