Hyundai Tucson: Warning Lamp Control( ABS/EBD)
Warning Lamp Control
ABS Warning Lamp module
The active ABS warning lamp module indicates the self-test and failure status of the ABS. The ABS warning lamp shall be on :
- During the initialization phase after IGN ON. (continuously 3 seconds).
- I n the event of inhibition of ABS functions by failure.
- During diagnostic mode.
- When the ECU Connector is seperated from ECU.
- Cluster lamp is ON when communication is impossible with CAN module.
EBD Parking Brake Warning Lamp Module
The active EBD warning lamp module indicates the self-test and failure status of the EBD. However, in case the Parking Brake Switch is turned on, the EBD warning lamp is always turned on regardless of EBD functions. The EBD warning lamp shallbe on:
- During the initialization phase after IGN ON. (continuously 3 seconds).
- When the Parking Brake Switch is ON or brake fluid level is low.
- When the EBD function is out of order .
- During diagnostic mode.
- When the ECU Connector is seperated from ECU.
- Cluster lamp is ON when communication is impossible with CAN module.
ESC Function / Warning Lamp (ESC System)
The ESC function/warning lamp indicates the self-test and failure status of the ESC.
The ESC function/warning lamp is turned 011 under the following conditions :
- During the initialization phase after IGN ON. (continuously 3 seconds).
- When the ESC function is inhibited by system failure.
- When the ESC control is operating. (Blinking - 2Hz)
- During diagnostic mode.(Except standard mode)
- Cluster lamp is ON when communication is impossible with CAN module.
ESC OFF Lamp (ESC System)
The ESC Off lamp indicates the self-test and operating status of the ESC.
The ESC Off lamp operates under the following conditions :
- During the initialization mode after IGN ON. (continuously 3 seconds).
- ESC Off lamp is On when driver input the ESC Off switch.
ESC ON / OFF Switch (ESC System)
The ESC On/Off Switch shall be used to toggle the ESC function between On/Off states based upon driver input.
The On/Off switch shall be a normally open, momentary contact switch.Closed contacts switch the circuit to ignition.
Initial stams of the ESC function is on and switch toggle the state.
READ NEXT:
Electronic Stability Control System- Components
ESC Control unit (HECU)
Front wheel speed sensor
Rear wheel speed sensor
ABS warning lamp
Parking brake / EBD
Failure
Diagnosis
In principle, ESC and TCS controls are prohibited in case of ABS
failure.
When ESC or TCS fail
ABS Does Not Operate/ ABS Does Not Operate (Intermittently)
ABS Does Not Operate
Detecting condition
Brake operation varies depending on driving conditions and road surface
conditions, so diagnosis can be difficult. However if a normal DTC is
displayed, check the following probable cause. When the problem
When Ignition Key Is Turned ON (engine OFF), The ABS Warning Lamp Does Not
Light Up.
Detecting condition
When current flows in the HECU the ABS warning lamp turns from ON
to OFF as the initial check. Therefore if the lamp does not light up. the
cause may be an open in the lamp power supply circuit, a blown bulb, an
open in the bo
SEE MORE:
Clutch Pedal
Components
Manual Transaxle Type
Clutch pedal arm
Clutch master cylinder
Clutch pedal assembly
Intelligent Manaul Transaxle Type
Ignition lock & clutch switch
Clutch pedal stroke sensor
Clutch pedal assembly
Removal
Passenger Air Bag (PAB)
Components Location
Passenger Air Bag (PAB)
Removal
Set the front tires straight-ahead.
Disconnect the batteiy negative terminal.
WARNING
After disconnecting the cables, wait at least 3 minutes.
Remove the glove box.
(Refe
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual
