Kia Stonic Quiz
Engine Control System/Fuel System

Brake switch

In this manual: Engine Control System/Fuel System
General Information — 8Maintenance — 31Engine Mechanical — 49Engine Electrical — 15Emission control system — 11Engine Control System/Fuel System — 45Clutch System — 12Manual Transaxle System — 11DCT (Dual Clutch Transmission) System — 16Drive Shafts and Axles — 9Suspension — 16Steering — 10restraint system — 15Braking system — 22Body (Interior and Exterior) — 89Rear Seat — 16Electrical System — 25Electrochromic Interior Rear View Mirror — 64Heating, Ventilation, and Air Conditioning — 31
14steps
~84min
3/5difficulty
Done 0 of 14

Components and Components Location

COMPONENTS LOCATION

1. Brake Pedal Bracket
2. Brake Light Switch		 3. Brake Pedal Lever

Schematic diagrams

CIRCUIT DIAGRAM

CIRCUIT DIAGRAM

TERMINAL DESCRIPTION

CLIP Description
1 IGN1
2 Engine Control Module (ECM)
3 B.
4 brake light

Troubleshooting

Troubleshooting

  1. component diagnosis

    Component Cause Problem
    switch fuse Fuse connection fault, fuse damaged

    • DTC: P0504

    • Symptom: Shift problems, starting problems, cruise control cancel problems, EPB release problems, brake light problems, ESP OFF indicator stays on.

    		 ① During acceleration/braking, check the signal waveform with an oscilloscope on each part. (Refer to How to Check Brake Light Switch Circuit)

    ② Refer to the relevant repair procedures for the part, if any, where a waveform abnormality is detected (refer to the repair procedures of the relevant part; replace if necessary)
    relay fuse Fuse connection fault, fuse damaged

    • DTC: P0504

    • Symptom: Shift problems, starting problems, cruise control cancel problems, EPB release problems, brake light problems, ESP OFF indicator stays on.
    stop lamp switch

    • Wiring damaged at the relevant part

    • Connector connection malfunction

    • All components faulty

    • DTC: P0504

    • Symptom: Shift problems, starting problems, cruise control cancel problems, EPB release problems, brake light problems, ESP OFF indicator stays on.
    Electronic brake light
    module (if equipped)

    • DTC: P0504, C2130, C2131

    • Symptom: Shift problems, starting problems, cruise control cancel problems, EPB release problems, brake light problems, ESP OFF indicator stays on.
    Engine Control Module (ECM)

    • DTC: P0504

    • Symptom: Shift problems, cruise control cancel problems
    BODY CONTROL MODULE (BCM)

    • Gear Shifting Concerns
    shift lock solenoid

    • Gear Shifting Concerns
    lock switch

    • Symptom: Shift problems, starting problems, cruise control cancel problems, EPB release problems
    Smart Key Unit (SMK)

    • start failure
    Electronic Parking Brake (EPB)

    • Symptom: EPB release problems, ESP OFF indicator stays on
    ABS/VDC Control Unit
    [Pressure Sensor]

    • Symptom: ESP OFF indicator stays on.

  2. symptom diagnosis

    Problem possible cause
    starting problems Switch fuse, relay fuse, brake light switch, electronic brake light module, ABS/VDC control unit, entire wiring, connectors ① During acceleration/braking, check the signal waveform with an oscilloscope on each part. (Refer to the procedure for checking the brake light switch circuit)

    ② Refer to the relevant repair procedures for the part, if any, where a waveform abnormality is detected (refer to the repair procedures of the relevant part; replace if necessary)
    Gear Shifting Concerns Switch fuse, relay fuse, brake light switch, electronic brake light module, BCM, ECM, inhibitor switch, entire wiring, connectors
    ESP OFF indicator light stays on. Switch fuse, relay fuse, brake light switch, electronic brake light module, ABS/VDC control unit, entire wiring, connectors
    P0504 Switch fuse, relay fuse, brake light switch, electronic brake light module, ECM, entire wiring, connectors
    Stop lamp does not work Switch fuse, relay fuse, brake light switch, electronic brake light module, cable/connector disconnected
    brake light
    ON    		 brake light switch, electronic brake light module,
    short circuit in cable, blown fuse

  3. Stop Lamp Switch System Diagnosis

    SSEM: Electronic Stop Lamp Module

  4. Refer to the DTC chart if the relevant DTCs are displayed.

repair procedures

INSPECTION

  1. Check the clearance between the stop lamp switch and the bracket.

    Brake light switch clearance (A): 1.0 ~ 2.0 mm

  2. If the clearance between the brake light switch and the bracket is not 1.0 - 2.0 mm, check the mounting clip and other parts, and make sure the brake light switch is within the specified range.

  3. If everything is normal, reinstall the brake light switch and check the clearance again.

TEST

  1. Inspect the stop lamp switch.

    1. Connect a multimeter to the brake light switch connector and check for continuity while pressing and releasing the plunger of the brake light switch.

    2. The brake light switch is in good condition when there is no continuity while the plunger is pressed.

REMOVAL AND INSTALLATION

  1. Turn the ignition "OFF" and disconnect the negative (-) battery terminal.

  2. Remove the lower instrument panel trim.

    (Refer to Body - "Lower Instrument Panel Trim")

  3. Disconnect the brake light switch connector (A).

  4. Pull the stopper plate (A) in the direction of the arrow.

  5. Turn the brake switch counterclockwise 45° and remove it.

  6. Hold the brake pedal arm and fully insert the brake switch until the contact part is visible.

  7. After installation, turn the brake switch clockwise 45° and attach the stopper plate by pressing it in.

8th.

Connect the connector of the brake light switch (A).

  1. Install the lower instrument panel.

    (Refer to Body - "Lower Instrument Panel Trim")

Test yourself

A quick Kia Stonic quiz: every answer comes with an explanation and a link to the manual page.