TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
p.118

BE/Body Electrical System, page 119

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p.120
Body Electrical System — MK2 Supra Body Electrical System, page 119
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Page text (OCR transcript)
BODY ELECTRICAL SYSTEM — Trip Computer
BE-119

TEST
TROUBLE

B
MPG indication always Zero.
Trip reading increases or "ARRIVE" mode indicates " ......... " always.

Is MPG indication always zero?
No
Replace DISPLAY CLUSTER.

Yes

Disconnect 14-terminal connector.

①
With the ignition switch at ON position, does voltage between terminals f and GND of the 14-terminal connector fluctuate between 0 to 5V when vehicle is moved about 1 meter?
(engine not running)

No
Yes

Is there continuity speed sensor and wire harness?
Replace DISPLAY CLUSTER.

Yes
No

Replace Keyboard.
Repair and replace speed sensor and wire harness.

1

14-terminal Connector of COMPUTER

GND

TOYOTA

DC