ad4230p5000a

Anti-lock brake system (ABS) diagnosis troubleshooting

Type ad · topic 42.30 · version 0103 · 2003-06-10

Applies to: MODEL 463 with ENGINE 606.964, 112.945, 113.962 MODEL 461 with ENGINE 602.983

Where it sits

Function group 2 Chassis › 42 Brakes - hydraulic and mechanical systems › 42.30 Anti-lock brake system (ABS) — Series 461 · Series 463 · Series 602 (models 983)

Also applies to engines/gearboxes: 112 945, 113 962, 606 964

AD42.30-P-5000A

Anti-lock brake system (ABS) diagnosis troubleshooting

5.9.97

MODEL 463 with ENGINE 606.964, 112.945, 113.962

MODEL 461 with ENGINE 602.983

Always read out the ABS fault memory before carrying out repair work. The HHT indicates the defective components in the display or refers to the relevant test step in the Diagnosis Manual.

Fuses must be in order.

Anti-lock brake system (ABS) diagnosis, advanced information

AD42.30-P-2001A

Troubleshooting

Complaint

Cause

Note

Remedy

ABS MIL (A1e17) comes on when engine is running.

Read out fault

memory

AD42.30-P-4001B

ABS MIL (A1e17) comes on while driving and does not go out again.

On-board voltage < 11 V, too many electrical consumers in operation

Read out fault

memory

AD42.30-P-4001B

ABS MIL (A1e17) comes on while driving and goes out again.

Test generator (G2) and read out fault memory

AD42.30-P-4001B

Low brake fluid level/parking brake/brake force distribution indicator lamp (A1e7) comes on while driving and does not go out again.

Electronic brake force distribution readout in display and warning buzzer are actuated for 5 seconds.

Actuation of electronic brake force distribution readout in display and warning buzzer after brake pedal is operated at speeds in excess of 40 km/h.

Read out fault

memory

AD42.30-P-4001B

After the engine is started the warning buzzer and electronic brake force distribution readout in display are actuated for 5 seconds.

CAN data bus

Model 463 only

Read out fault

memory

AD42.30-P-4001B

Brake pad wear indicator lamp (A1e6), low brake fluid level/parking brake/brake force distribution indicator lamp (A1e7), ETS warning lamp (A1e36), ABS MIL (A1e17) do not come on when ignition is switched on.

Model 463 up to 31.8.97:

Model 463 as of 1.9.97:

Read out fault memory of instrument cluster

Body DMNL, Index 1.1

dh0101ga00012x

Read out fault memory of instrument cluster with ASSYST

AD54.30-P-1000DZ

ABS MIL (A1e17) comes on when engine is running after the vehicle has been on the brake test bench or roller dynamometer.

Implausible speed signal due to different speeds at front and rear axle

Read out/erase fault memory

AD42.30-P-4001B

HHT cannot make contact with control module.

Diagnosis line

AD42.00-P-6000-04B

Referenced documents