KIA Niro: Stop Lamp Switch
Stop Lamp Switch Components and components location
- Brake pedal member assembly
- Stop lamp switch
- Brake pedal arm
- Brake pedal pad
- Brake pedal stroke sensor
Operation
Operation principle of inductive non-contact switch
- Use the high frequency magnetic field and the induced current that are generated by oscillation (to approved voltage) of coil in switch.
- The eddy current is generated on surface of metal by self inductance effect if there is metal in high frequency magnetic field.
- The eddy current that is generated attenuates the high frequency magnetic field as much as amount of generated by disturbing the switch's magnetic flux.
- ON-OFF by judging whether high voltage magnetic field is attenuates or not(calculate the voltage difference by length between metal and coil)
Schematic Diagram
Terminal function
Stop Lamp Switch - Troubleshooting
- Part diagnosis
Items:
Switch fuse
Cause:
Faulty fuse connection, Damaged fuse
Symptom:
- DTC Code : P0504
- Symptom : Shifting gear trouble, Starting failure, Cruise control function cancelation trouble, EPB function cancelation trouble, Stop lamp lighting trouble, ESP OFF light illuminated.
Items:
Relay fuse
Cause:
Faulty fuse connection, Damaged fuse
Symptom:
- DTC Code : P0504
- Symptom : Shifting gear trouble, Starting failure, Cruise control function cancelation trouble, EPB function cancelation trouble, Stop lamp lighting trouble , ESP OFF light illuminated.
Items:
Stop lamp switch
Cause:
- Damaged wiring of each part
- Faulty connection to connector
- Each part is defective
Symptom:
- DTC Code : P0504
- Symptom : Shifting gear trouble, Starting failure, Cruise control function cancelation trouble, EPB function cancelation trouble, Stop lamp lighting trouble , ESP OFF light illuminated.
Items:
Stop signal electronic module (If it applies)
Cause:
- Damaged wiring of each part
- Faulty connection to connector
- Each part is defective
Symptom:
- DTC Code : P0504, C2130, C2131
- Symptom : Shifting gear trouble, Starting failure, Cruise control function cancelation trouble, EPB function cancelation trouble, Stop lamp lighting trouble , ESP OFF light illuminated.
Items:
Engine control module (ECM)
Cause:
- Damaged wiring of each part
- Faulty connection to connector
- Each part is defective
Symptom:
- DTC Code : P0504
- Symptom :Shifting gear trouble,Cruise control function cancelation trouble
Items:
Body control module (BCM)
Cause:
- Damaged wiring of each part
- Faulty connection to connector
- Each part is defective
Symptom:
- Shifting gear trouble
Items:
Shift-lock solenoid
Cause:
- Damaged wiring of each part
- Faulty connection to connector
- Each part is defective
Symptom:
- Shifting gear trouble
Items:
Inhibitor switch
Cause:
- Damaged wiring of each part
- Faulty connection to connector
- Each part is defective
Symptom:
- Symptom : Shifting gear trouble, Starting failure, Cruise control function cancelation trouble, EPB function cancelation trouble
Items:
Smart Key Unit(SMK)
Cause:
- Damaged wiring of each part
- Faulty connection to connector
- Each part is defective
Symptom:
- Starting failure
Items:
Electronic parking brake
Cause:
- Damaged wiring of each part
- Faulty connection to connector
- Each part is defective
Symptom:
- Symptom : EPB function cancelation trouble , ESP OFF light illuminated.
Items:
ABS/VDC control module (Pressure sensor)
Cause:
- Damaged wiring of each part
- Faulty connection to connector
- Each part is defective
Symptom:
- Symptom : ESP OFF light illuminated.
- A waveform inspection is performed using an oscilloscope on each part during vehicle acceleration/ braking. (Refer to stop lamp switch circuit inspection procedures)
- Refer to the relevant repair procedures of the part when something abnormal is discovered in the waveform (Refer to the repair procedures of the relevant part and if necessary replace it)
- Symptom diagnosis
Symptom:
Trouble starting
Part that could be the cause:
Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic module, ABS/VDC control module, Each wire, Connector
Symptom:
Trouble shifting gears
Part that could be the cause:
Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic module, BCM, ECM, Inhibitor switch, Each wire, Connector
Symptom:
ESP OFF light illuminated
Part that could be the cause:
Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic module, ABS/VDC control module, Each wire, Connector
Symptom:
P0504
Part that could be the cause:
Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic module, ECM, Each wire, Connector
Symptom:
Stop lamp does notworking
Part that could be the cause:
Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic module, Wire/Connector disconnected
Symptom:
Stop lamp always turns on
Part that could be the cause:
Stop lamp switch, Stop signal electronic module, Wiring short circuit, Damaged fuse
- Inspect waveform using
an oscilloscope on each
part during vehicle
acceleration/braking.
(Refer to stop lamp switch circuit inspection Procedures)
- Refer to the relevant repair procedures of the part when something abnormal is discovered in the waveform (Refer to the repair procedures of the relevant part and if necessary replace it)
3. Stop lamp switch system diagnosis
SSEM : Stop Signal Electronic Module
- Refer to DTC guide when the related DTC codes are displayed.
READ NEXT:
Stop Lamp Switch Repair procedures
Removal Turn ignition switch OFF and disconnect the negative (-) battery terminal. Remove the crash pad lower panel. (Refer to Body - "Crash Pad") Remove the knee air bag. (Refer to Restraint - "Knee Airbag(KAB) Module&qSEE MORE:
Resetting the sunroof
In some circumstances resetting the sunroof operation may need to be performed. Some instances where resetting the sunroof may be required include: When the 12-volt battery is either disconnected or discharged When the sunroof fuse iHigh Voltage Battery System / Repair Procedures
Removal Warning Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuCategories
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