BE/Body Electrical System, page 55

BODY ELECTRICAL SYSTEM — Instruments and Sender Gauges
BE-65

SECTION
TROUBLE

P
Fuel gauge
Water temp. gauge
Lights do not dim when light and rheostat S/W turned ON.

For Fuel Gauge

Only fuel gauge?
(Does temp. gauge dim?)
Yes
Replace fuel and temp. gauges
Yes
Only temp. gauge?
(Does temp. gauge dim?)

No
No

Only fuel and temp. gauges do not dim?
(Speedometer OK?)

Yes
No

Remove meter and connect sub-harness (SST)
Refer to Section C

① With the ignition S/W at ON position and connector of fuel and temp. gauges disconnected, check that there is voltage between terminals of the connector as follows:
3 – 5  Light S/W ON                    4.0 – 6.0V
       Light S/W OFF                   0 – 1.0V
4 – 5  Light S/W turned ON
       Rheostat turned OFF             3.0 – 6.0V
       Rheostat operate (MIN — MAX)    0 – 3.8V

No
Replace speedometer

OK
Replace fuel and temp. gauges

①

Fuel and Temp. Gauges

[Diagram showing fuel and temp gauges with meter connections labeled GND, TC②, and TR②]

For Temp. Gauge