Toyota Hilux Surf 1993 Owner's Manual page 712

Is connector of ECU properly connected ?
And are all terminals in the connector ?
Is there 10 – 14 V between terminal IG
on ECU wire harness side connector and
body ground ? (Ignition switch on)
YES
Does warning light come off when both
the ECU connector and solenoid relay
connector are disconnected ?
(Ignition switch on)
YES
(Come off)
Faulty ECU.
BRAKE SYSTEM
Continued from page BR–78
YES
NO
(Come
on)
– Rear–Wheel Anti–Lock Brake System
Faulty connector.
Faulty power circuit.
Short circuit in wire harness between ECU termi–
nal W and solenoid relay terminal W.
BR–79