Diagnosis System Inspection - Toyota Hilux Surf 1993 Owner's Manual

BRAKE SYSTEM – Rear–Wheel Anti–Lock Brake System
Diagnosis System
DESCRIPTION
If a functional malfunction occurs, diagnosis system will
identify the problem and ECU stores the codes for the
trouble items.
At the same time, the system informs the driver of a mal–
function via the "REAR ANTILOCK" warning light in the
combination meter.
By turning on the ignition switch and disconnecting the
service connector, the trouble can be identified by the
number of blinks (diagnosis code) of the warning light.
In event of two codes, that having the smallest number
(code) will be identified first.
HINT: The warning light do not show the diagnostic
trouble codes while the vehicle is running.
INSPECTION OF DIAGNOSIS SYSTEM
1. INSPECT BATTERY POSITIVE VOLTAGE
Inspect that the battery positive voltage is about 12 V.
2. CHECK THAT WARNING LIGHT TURNS ON
(a) Turn the ignition switch to ON.
(b) Check that the "REAR ANTILOCK" warning light
turns on for about 3 seconds.
If not, inspect and repair or replace the fuse, bulb and
wire harness.
3. READ DIAGNOSTIC TROUBLE CODE
(a) Turn the ignition switch to ON.
(b) Disconnect the service connector.
SST 09843–18020
(c) Using SST, connect the terminal Tc to E, of the data
link connector 1.
BR–73