TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
p.120

BE/Body Electrical System, page 121

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Body Electrical System — MK2 Supra Body Electrical System, page 121
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Page text (OCR transcript)
BODY ELECTRICAL SYSTEM — Trip Computer                    BE-121

TEST                    TROUBLE

D                       Lights do not dim.

Disconnect 14-terminal connector.

①  With the ignition switch at ACC position and light switch turned ON, is there 0V between
    terminals DIM and GND of the 14-terminal connector?

No                                                         Yes

Replace Keyboard.                                          Replace DISPLAY CLUSTER.

1
        14 terminal Connector of COMPUTER

                                                           GND
                                                   DIM




TEST                    TROUBLE

E                       Inaccurate clock.

Replace DISPLAY CLUSTER

NOTE:  Allowable error : ±5 seconds/day.