Cruise Control Switch Circuit Inspection - Toyota Hilux Surf 1993 Owner's Manual

BE–68
INSPECTION OF CRUISE CONTROL SWITCH CIRCUIT
Turn ignition switch off.
CRUISE CONTROL
SWITCH
Disconnect connector from control switch.
INSPECT CONTROL SWITCH
Is control switch operation normal?
(See page BE–81)
SLIP RING
Disconnect connector from slip ring.
INSPECT GROUND CONNECTION
Is there continuity between terminal 5I6 on
wire harness side connector and ground?
INSPECT SLIP RING CONTINUITY
Is slip ring continuity normal?
(See page BE–82)
ECU
Connect connectors to slip ring.
Disconnect connector from CC ECU and in–
spect connector on wire harness side as fol–
lows.
INSPECT GROUND CONNECTION
Is there continuity between terminal 15 and
ground?
INSPECT CRUISE CONTROL SWITCH
CIRCUIT
Is there no continuity between terminals 19
and 15 with control switch is off?
Is there approx. 68
and 15 with control switch RESUME/ACCEL
is pushed on?
CC ECU faulty.
Replace CC ECU. Then recheck system.
BODY ELECTRICAL SYSTEM
Yes
Yes
Yes
Yes
Yes
between terminals 19
/
Yes
– Cruise Control System
Speed control switch faulty.
Replace cruise control switch. Then re–
check system.
• Open circuit in wire harness between
terminal 5l6 of slip ring and ground.
• Ground faulty.
Slip ring faulty.
Replace slip ring. Then recheck system.
• Open circuit in wire harness between
terminal 15 of CC ECU and ground.
• Ground faulty.
Short circuit in wire harness between ter–
minal 19 of CC ECU and terminal 6I6 of
slip ring.
Open circuit in wire harness between ter–
minal 19 of CC ECU and terminal 6I6 of
slip ring.