TSRM/MK4 Supra/Repair Manual
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BE/Body Electrical Systems — Troubleshooting for Anti–theft System, page 111

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p.112
Troubleshooting for Anti–theft System — MK4 Supra Body Electrical Systems, page 111
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Page text (OCR transcript)
BE–111
BODY ELECTRICAL SYSTEM – AUDIO SYSTEM

33 | Anti–theft System | TROUBLESHOOTING FOR ANTI–THEFT SYSTEM

Turn Ignition key from Lock position to ACC position.

Display A:
ID Number is set.

[ISEC] Display Disappears
After 1 Second.

No          Yes

Display E:
ANTI–THEFT SYSTEM
operation condition.
(ID number input error
10 times or more.)

Take to designated radio
service station.

Radio switch ON.          Normal operation
NG                    OK
Cancel ID number, refer to each malfunction item.

Display B

Radio switch ON.

Display B                    Display D

Refer to each               Normal
malfunction item.            operation

ANTI–THEFT SYSTEM operation condition.
[ID number input error 9 times or less.]
Input ID number to cancel ANTI–THEFT SYSTEM, and check display.

Display A → B          Display B          Display E          Display C→A

Radio switch ON.     Refer to each      Take to designated radio     ANTI–THEFT SYSTEM not
                     malfunction item.   service station.             cancelled.
                                                                      (ID number input error 9
Display D                                                             times or less.)

ANTI–THEFT SYSTEM cancelled.        OK        Normal operation.
Check audio system again.

NG
Cancel ID number, refer to each malfunction item.

(Liquid Crystal Display (LCD) for Audio System)

Display A          Display B          Display C     ID number     Display E
                                                    input error
SEC               Blank,             9 Err         time          HELP
                  No Illumination
N01977                               N01378                       N01979

                                                                  Display D
                                                                  Radio Display

HINT:
a) Refer to O/M for operation details of ANTI–THEFT SYSTEM.
b) When the ID number has been cancelled, reset the same number after completing the operation,
   or inform the customer that it has been cancelled.