TSRM/MK4 Supra/Repair Manual
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TGE/Troubleshooting 2JZ-GE — Wiring Diagram, page 56

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Wiring Diagram — MK4 Supra Troubleshooting 2JZ-GE, page 56
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Page text (OCR transcript)
EG–436

ENGINE – 2JZ–GE ENGINE TROUBLESHOOTING

WIRING DIAGRAM

Engine Control Module
B+
3  B-R  20  B-R  4  B-R
EA3  J2K  C1
B-R
GR  GR  24
M-REL  E10
2  2
R-L  9  14  30
5  1  1C K  R-L  JJ2  R-L  OX3
EFI Main Relay  8  E10
2  B-R  E1
R/B  3
No.2  3  2  Sub Heated
R-B-Y  2  2  Oxygen Sensor
1
2
R/B  4  BR-W  5  36
No.2  12  BR-W  JJ2  HT3
EFI No.1  1C K  E10
W-B  BR-W
BR
12A
C18
B
BR
Battery
JJ1 18
BR
E01
FI6940

INSPECTION PROCEDURE

HINT:   When other codes are output in addition to 27 at the same time, check the circuits for other codes first.

1   Check voltage between terminal HT3 of engine control module connector and body ground.

ON
SST
ECM

P   (1)  Connect SST (check harness "A").
         (See page EG–404)
         SST 09990–01000
    (2)  Turn ignition switch ON.

C   Measure voltage between terminal HT3 of engine control module connector and body ground.

OK   Voltage:  9 — 14 V

A 36
HT3
BE6653
FI6891

NG                                          OK   Go to step  4  .