Hyundai Tucson: Even After The Engine Is Started, The ABS Warning Lamp Remains ON
Detecting condition
If the HECU detects trouble, it lights the ABS warning lamp while at the same time prohibiting ABS control. At this time, the HECU records a DTC in memory. Even though the normal code is output, the ABS warning lamp remains ON, then the cause may be probably an open or short in the ABS warning lamp circuit.
- An open in the wire
- Faulty instrument cluster assembly
- Faulty ABS warning lamp module
- Faulty HECU
Inspection procedures
Check DTC Output
- Connect the diagnostic tool to the 16P data link connector located behind the driver's side kick panel.
- Check the DTC output using diagnostic tool.
- Is DTC output?
Perform the DTC troubleshooting
procedure (Refer to DTC troubleshooting).
Check the CAN circuit resistance
for ABS warning lamp.
Check the CAN circuit resistance for ABS warning lamp
- Disconnect the instrument cluster connector (M08) and turn the ignition switch OFF.
- Measure the resistance between terminal (M08) 32 and 33 of the cluster harness side connector.
Specification : 60
- Is resistance within specification?
Repair ABS warning lamp bulb or
instalment cluster assembly.
Check the CAN circuit wiring for
ABS warning lamp.
Check the CAN circuit wiring for ABS warning lamp
- Disconnect the instrument cluster connector (M08) and ESC HECU connector, and then turn the ignition switch OFF.
- Check for continuity between terminal (M08) 32 of the cluster harness side connector and terminal 26 of ESC HECU harness side.
Check for continuity between terminal (M08) 33 of the cluster harness side connector and terminal 14 of ESC HECU harness side.
Specification : Below 1
- Is resistance within specification?
Repair short of wiring between
terminal 26. 14 of ESC HECU harness connector and ABS warning
lamp module.
Repair open of wiring between
terminal 26, 14 of ESC HECU harness connector and ABS warning
lamp module.
Terminal Function
ABS/ESC
ESC MOCI
READ NEXT:
ESC Control unit (HECU)
Components
Front - right (FR)
Rear - left (RL)
Rear - right (RR)
Front - left (FL)
MC2
MCI
ESC Control unit (HECU) connector
Bracket
ESC Control unit (HECU)- Removal
Removal
Disconnect the battery negative ( - ) terminal.
ESC Control unit (HECU) - Adjustment
Adjustment
Perform diagnostic procedure by using diagnostic device as shown below :
Connect self-diagnosis connector (16pins) located under the driver side
crash pad to self-diagnosis device, and then torn the
self-diagnosis device after ke
Front wheel speed sensor/ Front wheel speed sensor connector
Components
Front wheel speed sensor
Front wheel speed sensor connector
Removal
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
Remove the front wheel and tire (A) from the front hub.
SEE MORE:
General Information
Troubleshooting
Specifications
Tightening Torque
Special Service Tools
Timing System - Installation
Install the crankshaft sprocket (A).
Place the crankshaft key at the left 180º.
Install the oil pump chain.
(Refer to Lubrication System - "Oil Pump")
Install the timing chain (A).
WARNING
When inst
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Owner's Manual
- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual