TSRM/MK4 Supra/Repair Manual
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p.129

BE/Body Electrical Systems — Starter Relay Circuit, page 130

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p.131
Starter Relay Circuit — MK4 Supra Body Electrical Systems, page 130
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Page text (OCR transcript)
BE–130
BODY ELECTRICAL SYSTEM – THEFT DETERRENT AND DOOR LOCK CONTROL SYSTEM

Starter Relay Circuit

CIRCUIT DESCRIPTION

When the theft deterrent system is activated, contact (a) in the ECU becomes open, creating an open circuit in terminal ST circuit and making the starter inoperative (starter cut).
In this condition, if one of the following operations is done, the contact (a) in the ECU is grounded, thus cancelling the starter cut:
(1) The front LH and RH door is unlocked with a key.

WIRING DIAGRAM

T9
Theft Deterrent and
Door Lock ECU

13
LJ2
BW6
B
B
(A/T)
R/B No. 2
B
B-W
B-W
L-O
L-O
10
IF2
SRLY
25
EA1
(M/T)
2
2
1
1
MAIN 3
2
B
Starter Relay
8
4
1K
J/B No. 1
ST
6
1J
B-W
8
7
W
4
4
1J
1B
W
J/B No. 1
1
EA2 2JZ-GTE
2
EA3 2JZ-GE
Ignition
Switch
2
AM1
2
2
ALT
2
B
S2
1
S3
B
∞
B
6
IB2 : 2JZ-GE
*1
8
IB3 : 2JZ-GTE
Battery

N12776