BE/Body Electrical System, page 49

BODY ELECTRICAL SYSTEM — Instruments and Sender Gauges
BE-49

SECTION
TROUBLE

I
Tachometer
Zero indication even with engine running

Remove meter and connect
sub-harness (SST)

① With the ignition S/W at ON position, does
voltage between terminals 16 and 17 of sub-
harness fluctuate with variations in engine rpm?
No
Bad wiring between
igniter and meter

Yes

② With the ignition S/W at ON position, does volt-
age between terminals 3 and 6 of tachometer con-
nector fluctuate between 0 and 1.5V when engine
speed increases from 2,000 to 3,000 rpm?
No
Replace speedometer

Yes

Replace tachometer

1
2

Sub-harness (SST)
Tachometer

IG ⊖
E ②
GND
TACHO SI