Traction control and hill descent control warning lights

Good morning,

There is a fault code stored in the ABS module for this issue. I need that code.

https://www.2carpros.com/articles/abs-warning-light-on-easy-repair-guide

You can go to a parts store and they will read it for free. Once I know the code, I can narrow the area of failure for you.

Yes, it could be a speed sensor but there are many components in the system.

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

https://www.2carpros.com/articles/how-to-replace-an-abs-wheel-speed-sensor

Roy

That is because the ABS resets every time you turn it off.

You need a scan tool that can read history codes for the ABS system.

Try accessing the ABS module with your scan tool and see if there are any history codes stored.

Roy

Okay, below is a description and flow chart for the code. It is related to the brake switch control circuit.

Roy

Electronic Stability Control
C1513 Brake switch error - Scantool Diagnostics

Monitor GDS Data

1. Connect scantool to Data Link Connector(DLC)
2. Ignition "ON" & Engine "OFF".
3. Press the brake pedal.
4. Check the service data related to "Brake Switch" on the GDS.

Specification :The brake switch's signal changes from OFF to ON.

5. Does the service data change normally?

Electronic Stability Control
C1513 Brake switch error - Component Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?

Image

Signal circuit inspection

Signal circuit inspection (brake pedal isn't pressed)
Open or Short Check
1. Ignition "ON" & Engine "OFF".
2. Measure voltage between brake light switch (brake switch) terminal of the HECU harness connector and chassis ground.

Specification :Brake light switch - 0V
Brake switch - B+

imageOpen In New TabZoom/Print

3. Is the measured value within specifications?

Image

Signal Circuit Inspection (brake pedal is pressed)
Open or Short Check
1. Ignition "ON" & Engine "OFF".
2. Press the brake pedal.
3. Measure voltage between brake light switch (brake switch) terminal of the HECU harness connector and chassis ground.

Specification :Brake light switch - B+
Brake switch - 0 V

imageOpen In New TabZoom/Print

4. Is the measured value within specifications?

Image

Okay, did the lights go out and everything return to normal?

Roy

You are welcome.

Always glad to help.

Roy