Hyundai Sonata: Brake System / Stop Signal Electronic Module Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / Brake System / Brake System / Stop Signal Electronic Module Repair procedures

Inspection

1. Fuse inspection

Mount the test fuse to the switch fuse and relay fuse part to confirm a normal joint fit.

2. 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]

[Stop signal electronic module]

[ABS/VDC control module]

3. Inspect the stop lamp circuit

Connect probe to each terminal wire and confirm oscilloscope waveform.

[Stop lamp switch input/output]

[Stop signal electronic module input/output]

[Oscilloscope waveform screen]

Removal

1.	Turn ignition switch OFF and disconnect the negative (-) battery cable.

2.	Remove the AVN unit. (Refer to Body Electrical System - "AVN sytem" ) (Refer to Body Electrical System - "Premium AVN System")

3.	Remove the glove box. (Refer to Body - "Glove Box" )

4.	Disconnect the stop signal electronic module connector (A).

5.	Remove the clip (B) and then remove the stop signal electronic module.

6.	Installation is the reverse of removal.

Stop Signal Electronic Module Schematic Diagrams

System Circuit Diagram Terminal Function TeminalDescription1Ground 2HAC/DBC Signal (Active Low)3ESS Signal (Active Low)4Stop lamp5Stop lamp switch6ECU/ SMK7ESS Signal (Active High)8Battery ...

Parking Brake System

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