Actuator Circuit Inspection - Toyota Hilux Surf 1993 Owner's Manual

INSPECTION OF ACTUATOR CIRCUIT
Turn ignition switch off.
VACUUM HOSE
Are there cracks or other damage on the vac–
uum hose?
ACTUATOR
INSPECT CABLE FREEPLAY
Is control cable freeplay less than 10 mm
(0.39 in.)?
INSPECT ACTUATOR OPERATION
Disconnect connector from actuator.
Is actuator operation normal?
(See page BE–82)
Is there continuity between terminal 3 on
wire harness side connector and ground?
STOP LIGHT SWITCH
INSPECT STOP LIGHT SWITCH CIRCUIT
Disconnect connector from stop light switch.
Is there continuity between terminal 4 of wire
harness side connector and ground?
Connect the connector to actuator.
Is there continuity between terminal 4 of wire
harness side connector and ground?
INSPECT STOP LIGHT SWITCH CONTINUITY
Is stop light switch continuity normal?
(See page BE–80)
Connect connector to stop light switch.
BODY ELECTRICAL SYSTEM
Yes
Yes
Yes
Yes (There is resistance approx. 71
Yes
CONTINUED ON NEXT PAGE
– Cruise Control System
Yes
Vacuum hose faulty.
Replace vacuum hose. Then recheck sys–
tem.
Adjust control cable freeplay.
Actuator faulty.
Replace actuator. Then recheck system.
Open circuit in wire harness between termi–
nal 3 of actuator and terminal 16 of ECU.
Yes
Short circuit in wire harness between ter–
minal 1 of actuator and terminal 4 of stop
light switch.
Open circuit in wire harness between ter–
minal 1 of actuator and terminal 4 of stop
light switch. .
)
/
Replace stop light switch. Then recheck
system.
BE–69