HEXA

Anti-lock Braking System(ABS)

3. REPAIRS :

Precautions :



Before undertaking any electric arc welding

work, disconnect the ABS ECU's connector.



During paintwork operations or major repair

work, which are likely to subjected to higher

temperature (above 85° C), The HCU must be

removed.



Before removing the ECU, the battery must

be disconnected. Terminals must be fully

tightened while installing battery.



Electrical wiring should not to be repaired it

should be replaced.

WARNING :

When the hydraulic connections to the hydraulic

modulator can be crossed over; the ECU self-

diagnosis will not detect it as a fault; nor will it

cause the system to be shut down or cause a fault

code to be logged in the ECU. When the hydraulic

modulator is exchanged or repaired, the brake

pipes to the solenoids must be tested for correct

assignment using a diagnostics tester. When the

inlet and outlet valve are activated, e.g. on the

front left wheel, this must generate the necessary

changes at the wheel. If this does not happen, the

pipes have been crossed over. This will cause the

system to function incorrectly.

Brake System Bleeding :

NOTE :

For brake bleeding procedure conventional/ using

diagnostic tool refer Brakes group.

A. ABS ECU/HCU REMOVAL :

Removal :

1. Turn OFF the ignition switch and disconnect

battery.

2. Disconnect ABS ECU/HCU wiring harness

connector

(Refer the procedure given in the

note below).

NOTE

Refer steps (i) and (ii) to disconnect ABS ECU

/HCU connector.

(i) Press the unlock button and remove the lever

from the lock and move towards unlocking

position.