Brake Bleed Procedure When Replacing The Abs Module (06-50-002)

Publication date: 2006-02-01
Reference number: 06-50-002

BRAKE BLEED PROCEDURE WHEN REPLACING THE ABS MODULE

TECHNICAL SERVICE BULLETIN

Reference Number(s): 06-50-002, Date of Issue: FEBRUARY 01, 2006

HYUNDAI:	2006 SONATA & AZERA
GROUP:	50 - CHASSIS

DESCRIPTION

When replacing the ABS module with a genuine Hyundai service part, it is not necessary to perform the High Scan electronic brake bleed procedure.

NOTE: Genuine Hyundai replacement ABS modules have a filled secondary circuit.

WARNING: Performing the High Scan electronic brake bleed procedure while air is in the primary brake circuit may trap air in the ABS module, which will be released during the ABS self check or when ABS/TCS/ESC is activated.

The ABS module consists of two fluid circuits, a primary and secondary circuit. During normal operation the primary brake circuit passes through the ABS module without obstruction. The secondary circuit consists of a rotary pump, inlet valves and outlet valves. The secondary circuit is only opened during ABS/TCS/ESC activation or during the ABS self check.

During ABS/TSC/ESC activation, the ABS module actuates the rotary pump, inlet and outlet valves to modulate brake pressure at individual wheels. During the ABS self check, completed when the vehicle exceeds approximately 10mph after each new key cycle, the ABS module actuates the rotary pump, inlet and outlet valves to check functionality.

After replacing the ABS module, the primary circuit must be free from air to prevent air from entering the secondary circuit.

Fig 1: Primary Brake Circuit Diagram

Fig 2: Secondary Brake Circuit Diagram

Affected parts numbers

58920-3K100 - Sonata (NF)

58920-3LA10 - Azera (TG)