Hyundai i-30: Brake System / Stop Lamp Switch
Components and components location
1. Brake member
assembly
2. Stop lamp switch
3. Return spring
|
4. Brake pedal
arm assembly
5. Brake pedal pad
|
Schematic diagrams
Teminal
|
Description
|
1
|
IGN1
|
2
|
BS
|
3
|
-
|
4
|
B+
|
5
|
Stop Lamp
|
6
|
Ground
|
Troubleshooting
1. |
Part diagnosis
Items
|
Cause
|
Symptom
|
|
Switch fuse
|
Faulty fuse connection, Damaged fuse
|
– |
Symptom : Shifting gear trouble, Starting failure, Cruise
control function cancelation trouble, EPB function cancelation
trouble, Stop lamp lighting trouble, ESP OFF light illuminated.
|
|
① A waveform inspection is performed using an oscilloscope on each
part during vehicle acceleration/braking. (Refer to stop lamp switch
circuit inspection procedures)
② 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)
|
Relay fuse
|
Faulty fuse connection, Damaged fuse
|
– |
Symptom : Shifting gear trouble, Starting failure, Cruise
control function cancelation trouble, EPB function cancelation
trouble, Stop lamp lighting trouble , ESP OFF light
illuminated.
|
|
Stop lamp switch
|
• |
Damaged wiring of each part
|
• |
Faulty connection to connector
|
|
– |
Symptom : Shifting gear trouble, Starting failure, Cruise
control function cancelation trouble, EPB function cancelation
trouble, Stop lamp lighting trouble , ESP OFF light
illuminated.
|
|
Stop signal electronic module (If it applies)
|
– |
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.
|
|
Engine control module (ECM)
|
– |
Symptom :Shifting gear trouble,Cruise control function
cancelation trouble
|
|
Body control module (BCM)
|
|
Shift-lock solenoid
|
|
Inhibitor switch
|
– |
Symptom : Shifting gear trouble, Starting failure, Cruise
control function cancelation trouble, EPB function cancelation
trouble
|
|
Smart Key Unit(SMK)
|
|
Electronic parking brake
|
– |
Symptom : EPB function cancelation trouble , ESP OFF
light illuminated.
|
|
ABS/VDC Control module
(Pressure sensor)
|
– |
Symptom : ESP OFF light illuminated.
|
|
|
2. |
Symptom diagnosis
Symptom
|
Part that could be the cause
|
|
Trouble starting
|
Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic
module, ABS/VDC control module, Each wire, Connector
|
① Inspect waveform using an oscilloscope on each part during vehicle
acceleration/braking. (Refer to stop lamp switch circuit inspection
Procedures)
② 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)
|
Trouble shifting gears
|
Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic
module, BCM, ECM, Inhibitor switch, Each wire, Connector
|
ESP OFF light illuminated
|
Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic
module, ABS/VDC control module, Each wire, Connector
|
P0504
|
Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic
module, ECM, Each wire, Connector
|
Stop lamp does notworking
|
Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic
module, Wire/Connector disconnected
|
Stop lamp always turns on
|
Stop lamp switch, Stop signal electronic module, Wiring short circuit,
Damaged fuse
|
|
3. |
Stop lamp switch system diagnosis
SSEM : Stop Signal Electronic Module
|
4. |
Refer to DTC guide when the related DTC codes are displayed.
|
Repair procedures
1. |
Turn ignition switch OFF and disconnect the negative (-) battery cable.
|
2. |
Remove the lower crash pad.
(Refer to Body - "Crash Pad")
|
3. |
Confirm the gap between stop lamp switch and bracket.
Stop lamp clearance (A) : 1.0 - 2.0 mm (0.04- 0.08 in.)
|
|
4. |
If the gap between stop lamp switch and bracket is not 1.0-2.0mm (0.04-0.08in),
check the mounting clip and other part of around stop lamp.
|
5. |
If there is normal, remove the stop lamp switch and then install again.
|
1. Fuse Inspection
Mount the test fuse to the switch fuse and relay fuse part to confirm a normal
joint fit.
2. Diagnostic tool Data Analysis
1. |
Analyze diagnostic tool data and confirm if there is anything wrong
with the stop lamp switch.
(1) |
Connect the diagnostic tool to the self-diagnosis connector.
|
(2) |
Turn the spark switch on
|
(3) |
Step on the brake pedal.
|
(4) |
Inspect the "brake switch" category that displays the "sensor
data" diagnostic tool.
Normal waveform : The pressure sensor signal value will
change according to the brake ON/OFF switch.
|
|
|
3. Inspection Of Connector By Each Part
Check to see whether or not each connector has been damaged, or terminal surge,
or incomplete connection has taken place
[Engine Room Junction Box]
[ABS/VDC Control Module]
4. Inspect The Stop Lamp Circuit
Connect probe to each terminal wire and confirm oscilloscope waveform.
[Stop Lamp Switch Input / Output]
[Oscilloscope Waveform Screen]
1. |
Turn ignition switch OFF and disconnect the negative (-) battery cable.
|
2. |
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
|
3. |
Disconnect the stop lamp switch connector (A).
|
4. |
Pull the locking plate (A) as indicated by the arrow.
|
5. |
Turn stop lamp switch 45° counterclockwise and remove it.
|
6. |
Inspect a removed stop lamp switch along the below procedures.
(1) |
Confirm a normal connection with terminal part
– |
A confirmation can be made to see if the connector has
been secured properly and if a connection mark is present.
|
|
(2) |
Perform the inspection of parts resistance
|
|
1. |
Fix the brake pedal arm and insert fully the stop lamp switch as hiding
contact part.
|
2. |
After inserting, turn the stop switch (A) 45° clockwise, and then assemble
locking plate by pushing.
|
3. |
Confirm the gap between stop lamp switch and bracket.
Stop lamp clearance (A) : 1.0 - 2.0 mm (0.04 - 0.08 in.)
|
• |
If the gap between stop lamp switch and bracket is not
1.0-2.0mm (0.04-0.08in), perform the above process again.
|
|
|
4. |
Connect the stop lamp switch connector.
|
5. |
Install the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
|
Components and components location
Components
[With EPB]
1. Caliper body
2. Guide rod pin
3. Guide rod pin boot
4...
Other information:
Release Residual Pressure
in Fuel Line
•
There may be some residual pressure even after "Release residual
pressure in fuel line" work, so cover the hose connection with
a shop towel to prevent residual fuel from spilling out before
disconnecting any fuel connection...
A/S Repair produres
MDPS System A/S Workflow
① Noise / malfunction Inspection
② Warning lamp (DTC) / CAN Line error
2 - 1 Checking Connectors and Wiring
1.
Checking Connectors and Wiring...
Categories
Opening the tailgate
■ 5 Door, Wagon
■ Fastback
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