I’m trying to diagnose why my abs module is not communicating with the ECU in my car, nor will it communicate with my diagnostic tool.
2006 Toyota Highlander Hybrid Limited
It started yesterday, in snowy weather, I went to the store then went back to my car and lights start flashing for ABS and Hybrid system. I started with checking fuses for ABS, all of them are in good shape (none blown), then I pulled the battery lead to reset the computer and to no avail it’s still not there. I didn’t want to call for a tow since it wasn’t far from home, of course the brake pedal wasn’t very responsive and steering was a little stiffer than usual. When I got back I ran diagnostic for codes and and the ABS was not communicating, Hybrid Control, EMPS and Cruise Control popped up for the ABS (CODES: U0121 & U0129 ).
U0121: Lost communication with anti-lock brake system (abs) control module :: Current
U0129: Lost communication with brake system control module :: Current
Audible symptoms being intermittent clicking from the module
I’m hoping it’s not a faulty module, but I want to check everything I possibly can. I need to find the correct wiring diagrams (I’ve attached what I could find online).
Can someone help with which wires I should check and any other ideas they may have?
I’ll appreciate any responses and I’ll reply quickly to all of you, Thank you
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