1997 TOYOTA SUPRA check engine

BE6653S02443A03143
ON
SST
ECM
B65, 62
PM1(+)
E2(-)
DI-264
- DIAGNOSTICSENGINE (2JZ-GTE)
492 Author
: Date
:
1997 SUPRA (RM502U)
3 Check voltage between terminals PM1 and E2 of ECM connector.
PREPARATION:
(a) Connect Check Harness A (See page DI-164).
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminals PM1 and E2 of ECM con-
nector.
OK:
Voltage: 2.3 - 3.0 V
OK Check and replace ECM (See page IN-28).
NG
4 Check for open and short in harness and connector between turbo pressure
sensor and ECM.
NG Repair or replace harness or connector.
OK
Replace turbo pressure sensor.

BE6653S03250S03251
A03145
ON
Air Air
E
FE
F
VSV: OFF VSV: ON
- DIAGNOSTICSENGINE (2JZ-GTE)
DI-267
495 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION PROCEDURE
TOYOTA hand-held tester
1 Connect the TOYOTA hand-held tester and check operation of VSV for waste
gate valve.
PREPARATION:
(a) Connect the TOYOTA hand-held tester to the DLC3.
(b) Turn ignition switch ON and TOYOTA hand-held tester
main switch ON.
(c) Select the ACTIVE TEST mode on the TOYOTA hand-
held tester.
CHECK:
Check operation of VSV when VSV is operated by the TOYOTA
hand-held tester.
OK:
VSV is ON:
Air from pipe E flows out through pipe F.
VSV is OFF:
Air does not flow from pipe E to pipe F.
OK Go to step 3.
NG
2 Check VSV for waste gate valve (See page SF-63).
NG Replace VSV for waste gate valve.
OK

S03256S03257BE6653
A03146
ON
AirAir
E
FE
F
VSV: OFF VSV: ON
DI-268
- DIAGNOSTICSENGINE (2JZ-GTE)
496 Author
: Date
:
1997 SUPRA (RM502U)
3 Connect the TOYOTA hand-held tester and check operation of VSV for exhaust
bypass valve.
PREPARATION:
(a) Connect the TOYOTA hand-held tester to the DLC3.
(b) Turn ignition switch ON and TOYOTA hand-held tester
main switch ON.
(c) Select the ACTIVE TEST mode on the TOYOTA hand-
held tester.
CHECK:
Check operation of VSV when VSV is operated by the TOYOTA
hand-held tester.
OK:
VSV is ON:
Air from pipe E flows out through pipe F.
VSV is OFF:
Air does not flow from pipe E to pipe F.
OK Go to step 5.
NG
4 Check VSV for exhaust bypass valve (See page SF-67).
NG Replace VSV for exhaust bypass valve.
OK

BE6653S03252S03253
A03147
ON
Air
Air
FE
F
VSV: OFF VSV: ONE
Air Filter
- DIAGNOSTICSENGINE (2JZ-GTE)
DI-269
497 Author
: Date
:
1997 SUPRA (RM502U)
5 Connect the TOYOTA hand-held tester and check operation of VSV for intake air
control valve.
PREPARATION:
(a) Connect the TOYOTA hand-held tester to the DLC3.
(b) Turn ignition switch ON and TOYOTA hand-held tester
main switch ON.
(c) Select the ACTIVE TEST mode on the TOYOTA hand-
held tester.
CHECK:
Check operation of VSV when VSV is operated by the TOYOTA
hand-held tester.
OK:
VSV is ON:
Air from pipe E flows out through pipe F.
VSV is OFF:
Air does not flow from pipe E to pipe F.
OK Go to step 7.
NG
6 Check VSV for intake air control valve (See page SF-61).
NG Replace VSV for intake air control valve.
OK

BE6653S03254S03255
A03148
ON
Air
F
VSV: OFF VSV: ONE Air
E
Air Filter
DI-270
- DIAGNOSTICSENGINE (2JZ-GTE)
498 Author
: Date
:
1997 SUPRA (RM502U)
7 Connect the TOYOTA hand-held tester and check operation of VSV for exhaust
gas control valve.
PREPARATION:
(a) Connect the TOYOTA hand-held tester to the DLC3.
(b) Turn ignition switch ON and TOYOTA hand-held tester
main switch ON.
(c) Select the ACTIVE TEST mode on the TOYOTA hand-
held tester.
CHECK:
Check operation of VSV when VSV is operated by the TOYOTA
hand-held tester.
OK:
VSV is ON:
Air from pipe E flows out through pipe F.
VSV is OFF:
Air does not flow from pipe E to pipe F.
OK Go to step 10.
NG
8 Check VSV for exhaust gas control valve (See page SF-65).
NG Replace VSV for exhaust gas control valve.
OK
9 Check for open and short in harness and connector between EFI main relay
(Marking: EFI MAIN) and ECM (See page IN-28).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN-28).

- DIAGNOSTICSENGINE (2JZ-GTE)
DI-271
499 Author
: Date
:
1997 SUPRA (RM502U)
10 Check connection of vacuum hose (See page EC-2).
NG Repair or replace.
OK
11 Check turbocharger components (See page TC-18).
NG Replace turbocharger components.
OK
Check and replace ECM (See page IN-28).
OBDII scan tool (excluding TOYOTA hand-held tester)
1 Check VSV for waste gate valve (See page SF-63).
NG Replace VSV for waste gate valve.
OK
2 Check VSV for exhaust bypass valve (See page SF-67).
NG Replace VSV for exhaust bypass valve.
OK

BE6653S05420
A03149
ON
Check Harness A
VSV3(+) VSV2(+)
VSV1(+)
VSV4(+)
DI-272
- DIAGNOSTICSENGINE (2JZ-GTE)
500 Author
: Date
:
1997 SUPRA (RM502U)
3 Check VSV for intake air control valve (See page SF-61).
NG Replace VSV for intake air control valve.
OK
4 Check VSV for exhaust gas control valve (See page SF-65).
NG Replace VSV for exhaust gas control valve.
OK
5 Check voltage between terminal VSV1 ~ VSV4 of ECM connector and body
ground.
PREPARATION:
(a) Connect Check Harness A (See page DI-164).
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminal VSV1 ~ VSV4 of ECM con-
nector and body ground.
OK:
Voltage: 9 - 14 V
NG Check and repair harness or connector be-
tween VSV for waste gate valve and ECM
(See page IN-28).
OK

- DIAGNOSTICSENGINE (2JZ-GTE)
DI-273
501 Author
: Date
:
1997 SUPRA (RM502U)
6 Check connection of vacuum hose (See page EC-2).
NG Repair or replace.
OK
7 Check operation of turbocharger components (See page TC-18).
NG Replace turbocharger components.
OK
Check and replace ECM (See page IN-28).