Toyota Celica Supra 1986 Service And Repair Manual page 588

BE-40 BODY ELECTRICAL SYSTEM - Instruments and Sender Gauges
SECTION
TROUBLE
'
B
Speedometer
Speedometer displays (0) wllile driving
I
Does trip meter operate?
No
Does trip meter operate with meter
disconnected and cable turned?
Yes
Yes
No
.
I
Check total counter
I
• Check cable
• Check drive and driven gears
I
Remove meter and connect sub·harness (SSTI
I
~
(DWith the ignition S/W at ON position,
@ With the ignition S/W at ON posi·
.
No
I·
check that there is 4.0 - 6.0V between
tion, check that there is 4.0 - 6 .0V
terminals 1 and 3 of connector for speed
between terminals 1 and 3 of
speed-
•
sensor (total counter).
ometer with connector removed.
OK
No OK
'
I
Replace speed sensor
® With the ignition S/W at ON position,
does voltage between terminals 1 and 2 of
SPeed
sensor connector fluctuate between
'
0 - 5.0V when meter cable is turned?
Yes .
4.0-
s.ov
Replace speedometer
__r-t::••···········
..........
0 - lV
.
No
@ With the ignition S/W at ON position,
and
speed
sensor disconnected, does display
No
appear when terminals 1 and 2 of speedometer
are connected and disconnected?
Yes
.
I
Replace speed sensor
I