Workshop Manuals Factory service & repair Rover
Rover Rover 600 Repair Manual - Volumes 1 and 2 - 2nd Edition15 · Brakes – ABS BY4
15 · Brakes

Fault finding

Make
Rover
Model
600 Rover 600 Repair Manual - Volumes 1 and 2 - 2nd Edition
Section
Operation › Fault finding
Brakes – ABS BY4Fault finding

FAULT FINDING

MAIN CODESUB CODESYMPTOM/DIAGNOSISPROBABLE CAUSE
7 1 Solenoid:
Right – front		 Fail – safe relay stuck OFF.
  1. Open circuit in solenoid drive circuit between engine compartment ABS fuse/relay box and ABS control unit.
  2. Short circuit to body earth in solenoid drive circuit between solenoid and ABS control unit.
Faulty solenoid drive transistor (ON) in ABS control unit.
7 2 Left – front
7 4 Rear
Each solenoid valve is momentarily activated at initial diagnosis and when the engine is started. ABS indicator light illuminates when battery voltage is detected at solenoid terminal.
ABS indicator light is illuminated when 0V is detected at solenoid terminal and solenoid OFF signal is detected during regular diagnosis.
  1. Short circuit to power in solenoid drive circuit between solenoid and ABS control unit.
  2. Faulty solenoid drive transistor (OFF) in ABS control unit.
  3. Short circuit to power in drive circuit inside solenoid.
  4. Short circuit to outlet circuit in inlet circuit between solenoid and ABS control unit.
Symptom does not reappear:
Intermittent interruption in solenoid valve drive circuit.
Intermittent interruption in solenoid valve earth circuit.
Intermittent interruption in fail – safe relay circuit.
8 1 ABS function
ABS indicator light illuminates when ABS functions continuously.		 Wheel sensor signal disappears at speeds below 6 mph (10 km/h).
  1. Faulty ABS control unit.
Symptom does not reappear:
Intermittent interruption in wheel sensor.
Rough road driving – (No problem).
8 2 CPU comparison
ABS indicator illuminates when a difference between CPU data is detected.		 Faulty ABS control unit.
Symptom does not reappear:
No problem.
8 4 IC (integrated circuit)
ABS indicator illuminates if any integrated circuit abnormalities are detected during regular diagnosis.		 Faulty ABS control unit.
Symptom does not reappear:
No problem.

Parts & tools for this job For Rover 600

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