Toyota Celica Supra 1986 Service And Repair Manual page 623

BODY ELECTRICAL SYSTEM - Cruise Control System BE-76
J
CONTINUED FROM PREVIOUS PAGE
Yes
INSPECT CLUTCH SWITCH CIRCUIT (MIT)
Yes
• Short circuit in wire harness between
Is there continuity between terminal 11 and
terminal 11 of computer and terminal 3
body ground with clutch pedal returned ?
of clutch switch.
o
Inspect clutch switch.
No
INSPECT NEUTRAL START SWITCH
• Short circuit in wire harness between
CIRCUIT
(AfT)
Yes
terminal 11 of computer and terminal
Is there battery voltage between terminal 11
3 of neutral start switch.
and body ground when shifting except to "'N"
• Inspect neutral start switch.
range?
No
INSPECT PARKING BRAKE SWITCH CIRCUIT
• Short circu it in wire harness between
Is there battery voltage between terminal 12
No
terminal 12 of computer and terminal 1
and body ground with parking brake lever
parking brake switch.
returned ?
• Inspect parking brake switch.
Yes
INSPECT SPEED SENSOR CIRCUIT
Open circuit in wire harness between terminal
Disconnect connector from combination meter.
No
C-7 (analog meter) or A -12 (digital meter) of
Is there continuity between terminal C-7 (anal og
combination meter and terminal 6 of
meter) or A-12 (digital meter) of wire harness
computer.
side connector and terminal 6 of computer
?
Yes
Disconnect connector from combination meter.
Yes
Short circuit in wire harness between terminal
Is there continuity between terminal 6 and body
6 of computer and terminal 20 of combi-
ground?
nation meter.
No
SPEED SENSOR
INSPECT GROUND CONNECTION
• Open circuit in wire harness between
Disconnect connector from combination meter.
No
terminal C·6 (analog meter) or A-1 0
Is there continuity between terminal C-6 (analog
(digital meted and body ground.
meter) or A-1 0 (digital meter) of wire harness
• Body ground faulty.
side connector and body ground
?
Yes
INSPECT SPEED SENSOR OPERATION No Speed sensor faulty.
Is speed sensor operation normal
?
(See page BE-83)
Yes
CONTINUED ON NEXT PAGE