1999 Mazda 626 ABS and TCS Lights On

1999 MAZDA 626

JIMMYLOOI

MEMBER
2 POSTS

hello ,
was wondering if someone has the same problems like i do. been in to the workshop and by hooking it up to a comp they told me that it was from my back brakes sensors. the onlý way to be sure was to pay more money for them to take apart my car. so was wondering if there were easier solutions before leaving in my car again.

much thanks

Jim

Jan 1, 2007 at 9:52 PM

COSMO

✓Experienced Mechanic
347 POSTS

If the PCM and ABS computer lose one of the ABS sensor input (ie dead sensor) the ABS and TCS light will come on. I have seen a few sensors go faulty on that year of car. There really is no need to take it apart to diagnois it though. It only requires checking the sensor outputs to the PCM with either a multi meter or with the proper scan tools.

Cosmo...Mazda TEch

expect 1/2 hour diag and 1 hour for replacement

Jan 2, 2007 at 3:16 AM

JIMMYLOOI

MEMBER
2 POSTS

Thanks Cosmo Mazda Tech

Jim

Apr 18, 2007 at 6:08 AM

Suggested Repair

Check ABS sensor outputs to the PCM with a multimeter or a proper scan tool rather than disassembling the car. A dead or faulty ABS sensor can turn on both the ABS and TCS lights. Expect about half an hour for diagnosis and about one hour to replace a faulty sensor.

Conversation Summary

The owner of a 1999 Mazda 626 reported ABS and TCS lights staying on. A shop said the rear brake sensors were the cause and wanted to disassemble the car for confirmation. A Mazda technician explained that a lost ABS sensor input to the PCM and ABS computer will illuminate both lights, and that sensors on that year can fail. Diagnosis only requires checking sensor outputs with a multimeter or scan tool, with roughly half an hour for diagnosis and one hour for replacement.

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1999 Mazda 626 ABS and TCS Lights On

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