Test results

First of all check whether the ABS warning light and the handbrake warning light come on simultaneously during starting and then go out

Move on to Step 1

The two warning lights both remain on after starting

Proceed as instructed

 See table K062 ABS AND HANDBRAKE WARNING LIGHTS BOTH ON

Connect the Examiner diagnostic equipment to the diagnostic socket.

Check that there are no faults in the ABS control unit

Move on to Step 2

1. Error detected in the control unit

2. No communication with the control unit

1. Continue following the instructions on the diagnostic equipment

2. Restore:

- Connection between the ABS control unit and the diagnostic connector;

- ABS control unit supply

 See E7020 ABS

Keeping the Examiner diagnostic equipment connected, carry out active diagnosis of:

- pump motor;

- solenoid valves.

Move on to Step 3

Fault detected in one of the solenoid valves

Replace the ABS electronic control unit - electrohydraulic unit

 Op. 3340A12 ABS HYDRAULIC AND ELECTRONIC CONTROL UNIT - R.R.

Check the condition of the rear brake caliper pistons

Move on to Step 4

Pistons worn or seized

Replace the rear brake callipers

 Op. 3310B36 REAR BRAKE CALIPER (ONE), LEFT OR RIGHT - R.R

Visually inspect that there are no bends or constrictions in the brake pipes, bleed the system and check that the fluid comes out evenly from the bleed screws

Move on to Step 5

Bends or constrictions present, the fluid does not come out evenly

Replace the section of pipe affected by the problem.

 Op. 3340B ABS SYSTEM PIPES

Visually inspect that there is no grease, oil or dirt on the front braking surfaces

End of diagnosis

Braking surfaces dirty

Clean, check and eliminate the causes of the problem: if necessary, replace the front pads

 Op. 3310A60 FRONT BRAKE PADS - REPLACE