TROUBLE DIAGNOSES — Diagnostic Procedure 8 — ABS Warning Circuit (L.E.D. continuously off)
BR-70flowchartL.E.D. continuously off = ABS warning lamp never illuminates. Step A (jumper pin 36 to ground) is the diagnostic shortcut: if the lamp lights, the C/U drive side is open; if not, the lamp/circuit upstream is the fault.
Diagnostic Procedure 8
ABS WARNING CIRCUIT (L.E.D. continuously off)
1
A — CHECK ELECTRIC CIRCUIT OF ABS WARNING LAMP. Disconnect Control Unit connector. Check if ABS warning lamp is on when terminal ㊱ is connected to body ground.
N.G.
Check warning lamp and circuit.
O.K.
2
B — CHECK ACTUATOR RELAY CIRCUIT. Disconnect actuator connector. Check continuity Terminal 11-14 0Ω.
N.G.
Replace actuator.
O.K.
3
C — Disconnect actuator relay connector. Check continuity between relay side terminal and body ground.
N.G.
same as step 2
O.K.
4
Replace ABS Control Unit.