ABS and Handbrake Lights Both On

[oj88]

I mostly use shrink-tubes to protect exposed wiring which are under 1-2 inches in length, so a lighter is all I use.

[jick.cejoco]

heat gun, aka wifey's
hair dryer.
heh heh.

in the olden days, we made do with plastic electrical tape. and to ensure that they do not unravel later, we would tie them up using

crochet string.

For securing vinyl electrical tapes I use liquid electrical tape or in its absence PVC pipe solvent cement. It dries fast and secures tape ends liquid tight

[GTcervan]

Umm, fixed na kaya eto or does the problem still persist? 🤔

[_Cathy_]

not yet fixed

[jick.cejoco]

I'm surprised nobody mentioned using an oscilloscope to observe/monitor thebehavior of the wheel speed sensors. Physically moving, unplugging and reinstalling may mask the symptoms temporarily. Wika nga, do not contaminate the evidence. True over time the magnetic tip of the wheel speed sensor picks up ferrous dust or debris that makes the speed sensor "dirty" with garbled signal which in turn "confuses" the EBCM and by default turn the brake warning light ON. In case of sensor tip debris, most of the time, if accessible, can be cleaned and reinstalled, DTCs erased and send the car on it's merry way.

[oj88]

I'm surprised nobody mentioned using an oscilloscope to observe/monitor thebehavior of the wheel speed sensors. Physically moving, unplugging and reinstalling may mask the symptoms temporarily. Wika nga, do not contaminate the evidence. True over time the magnetic tip of the wheel speed sensor picks up ferrous dust or debris that makes the speed sensor "dirty" with garbled signal which in turn "confuses" the EBCM and by default turn the brake warning light ON. In case of sensor tip debris, most of the time, if accessible, can be cleaned and reinstalled, DTCs erased and send the car on it's merry way.

In the PH? I think Cathy would be hard-pressed to find a proper garage with a scope. 9/10, it's just likely a worn out/dirty ABS pickup or a broken connection.

But I agree that going that route would be the systematic way of diagnosing faults.

[jick.cejoco]

Basic single channel DSO isn't that expensive. Training and the needed equipment is all what it takes. I remember my foreman the 80s who doesn't understand simple electronics and internal combustion engine operating theory. A parts replacer or a mechanic who does not aspire to learn or get training is going to remain a parts replacer. Technology has jumped exponentially. Nobody at repair shop level programmed PCMs in the 80s. Now, it is very common with cars since the year 2000.

[dr. d]

I'm surprised nobody mentioned using an oscilloscope to observe/monitor thebehavior of the wheel speed sensors. Physically moving, unplugging and reinstalling may mask the symptoms temporarily. Wika nga, do not contaminate the evidence. True over time the magnetic tip of the wheel speed sensor picks up ferrous dust or debris that makes the speed sensor "dirty" with garbled signal which in turn "confuses" the EBCM and by default turn the brake warning light ON. In case of sensor tip debris, most of the time, if accessible, can be cleaned and reinstalled, DTCs erased and send the car on it's merry way.

nice to have, but "who knows how to use oscilloscopes nowadays?"
... from the generation who would replace spark plugs rather than clean and re-gap them...

[jick.cejoco]

A digital storage oscilloscope is not a nice to have but a must have for a reputable technician. Similar to the medical field, a hospital must at least have an X ray machine. You can not advice or recommend to a patient what to do if you are limited on informational or diagnostic equipment.

[oj88]

Basic single channel DSO isn't that expensive. Training and the needed equipment is all what it takes. I remember my foreman the 80s who doesn't understand simple electronics and internal combustion engine operating theory. A parts replacer or a mechanic who does not aspire to learn or get training is going to remain a parts replacer. Technology has jumped exponentially. Nobody at repair shop level programmed PCMs in the 80s. Now, it is very common with cars since the year 2000.

It's a lot more nuanced than that. Again, this is the PH. One's profession here is nowhere near as appreciated (and compensated more) compared to someone working in more developed countries.

Putting it another way, one's profession and know-how here means nothing to your livelihood if you can't turn a profit from fast turnarounds and volume repairs.

The only value of these highly-skilled repair mechanics who have invested in training, tools and diag instruments is in fault-finding complex and even "impossible" problems. But those situations are far in-between and most mechanics would just lean towards replacing statistically failure-prone parts at the get-go.

As a disclaimer, I don't agree to a parts-cannon approach, but that is the nature of the beast. Besides, bad practice notwithstanding, these mechanics yields good-enough batting averages that has evidently kept them in business.