Sabre
Overlanding Nurse
EDIT: PROBLEM FIXED! See post #8, below, for "how to!"
Is this the dreaded brake booster accumulator leak? The HBB motor itself? The ABS ECU?
Symptoms: electromechanical "cluckcluckcluck" sound from booster motor when braking and also at random times. No ABS light, no fault tone, no OBDII codes. Brakes work normally except when braking hard on gravel, when the ABS light and high tone come on and there are 4 locked wheels and no pedal pulse.
But here's the thing: this happened right after fording a deeply flooded trail. It can't be coincidence (well, sure it can, but it seems unlikely).
It was wet all over the place under the hood, so I checked fuses, relays and fusible links...all OK. I pulled the ABS relay & the noise persists. Pulled ABS fuse and noise persists. Wheel sensors look OK. Disconnected battery to reset master ECU...problem persists.
2001 Limited, unknown if HBB recall ever done. Ugh...I guess I'm going to have to submit myself to the dealership for their special ABS ECU scan tool.
Thoughts?
Is this the dreaded brake booster accumulator leak? The HBB motor itself? The ABS ECU?
Symptoms: electromechanical "cluckcluckcluck" sound from booster motor when braking and also at random times. No ABS light, no fault tone, no OBDII codes. Brakes work normally except when braking hard on gravel, when the ABS light and high tone come on and there are 4 locked wheels and no pedal pulse.
But here's the thing: this happened right after fording a deeply flooded trail. It can't be coincidence (well, sure it can, but it seems unlikely).
It was wet all over the place under the hood, so I checked fuses, relays and fusible links...all OK. I pulled the ABS relay & the noise persists. Pulled ABS fuse and noise persists. Wheel sensors look OK. Disconnected battery to reset master ECU...problem persists.
2001 Limited, unknown if HBB recall ever done. Ugh...I guess I'm going to have to submit myself to the dealership for their special ABS ECU scan tool.
Thoughts?
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