AD42.30-W-3003A | Anti-lock brake system (ABS) diagnosis operational check | 9.9.97 |
MODEL 625.1 /2, 655, 656, 657, 658, 659
with CODE (B02) brake system, anti-lock brake system (ABS)
except CODE (A96) acceleration slip regulation (ASR)
MODEL 650, 651, 652, 653, 654
with CODE (B02) brake system, anti-lock brake system (ABS)
except CODE (A96) acceleration slip regulation (ASR)
Anti-lock brake system (ABS) diagnosis, basic knowledge | |||
| Anti-lock brake system (ABS), location of components | ABS system in two-axle vehicles | |
a | On-board voltage 22.5 to 29.5 V | ||
b | Supply pressure above 6.5 bar | ||
Function check | |||
Scope of test | Operation/Requirement | Specified value | Possible cause/Remedy |
1 ABS MIL Towing vehicle | Ignition: ON: Vehicle speed approx. 7 km/h. | MIL comes on. MIL goes out. | Malfunction indicator lamp defective Carry out test step 2 If MIL does not go out: |
2 ABS info lamp, trailer MIL and trailer voltage supply | Plug in test plug for 24 V trailer lighting: Also plug in test plug for ABS trailer. Ignition: ON Engine: Start: | Info lamp comes on. Trailer ABS MIL goes out. Info lamp goes out. Trailer ABS MIL and malfunction indicator lamp in ABS test plug come on. | Malfunction indicator lamp defective Info module defective |
Referenced documents
- ad4230w2001c Antilock brake system (ABS), diagnosis, basic knowledge
- ad4230w600115a ABS test of electrical system info lamp / info module
- ad4230w600116a ABS test of electrical system trailer voltage supply
- ad4230w6001a Anti-lock brake system (ABS) test of electrical system
- gf4230w000303c Antilock brake system (ABS), location of components