Toyota Celica Supra 1986 Service And Repair Manual page 629

BODY ELECTRICAL SYSTEM - Cruise Control System BE-81
H INSPECTI ON OF SPEED SENSOR CIRCUIT
Tum ignition $Witch on.
J
,S
PEEQ ljEN:iQR
INSPECT GROUND CONNECTION Short circuit In wire hamess between
Disconnect connector from combination meter.
Yes
terminal C-6 (analog meter) or A-10
Is there continuity between terminal
C6
(digital meter) and body ground.
(analog meter) or A·l 0 (digital meter) of wi re
harness side connector and body ground
1
No
COMPUTE,R
INSPECT SPEED SENSOR CIRCUIT Open circuit in wire harness between
Disconnect connector from combination
No
terminal
C 7
(analog meter) or A· 12
meter.
(digital meter) of combination meter
Is there continuity between terminal
C7
and terminal 6 of computer.
(analog meter) or A·1 2 (digital meter) of
wire harness side connector and terminel
6
of computer 1
Yes
INSPECT SPEED SENSOR OPERATION
No
Speed sensor faulty.
Is speed sensor operation normal?
(See
page BE-83)
Yes
Replace computer.