1997 TOYOTA SUPRA Service Repair Manual

Page 609 of 1807

TOYOTA SUPRA 1997  Service Repair Manual DI-194
- DIAGNOSTICSENGINE (2JZ-GTE)
422 Author: Date:
1997 SUPRA   (RM502U)
INSPECTION PROCEDURE
1 Check for open and short in harness and connector between ECM and heated
oxygen sensor (See page I

Page 610 of 1807

TOYOTA SUPRA 1997  Service Repair Manual P18349
- DIAGNOSTICSENGINE (2JZ-GTE)
DI-195
423 Author: Date:
1997 SUPRA   (RM502U)
3 Check the output voltage of heated oxygen sensor during idling.
PREPARATION:
Warm up the heated oxygen sensor wi

Page 611 of 1807

TOYOTA SUPRA 1997  Service Repair Manual DI-196
- DIAGNOSTICSENGINE (2JZ-GTE)
424 Author: Date:
1997 SUPRA   (RM502U)
DTC P0133 Heated Oxygen Sensor Circuit Slow
Response (Bank 1 Sensor 1)
CIRCUIT DESCRIPTION
Refer to ºInsufficient Coolan

Page 612 of 1807

TOYOTA SUPRA 1997  Service Repair Manual BE6653S02437A03033
ON
Check Harness A
B72, 71
HT1(+) HTS(+)
ECM
- DIAGNOSTICSENGINE (2JZ-GTE)
DI-197
425 Author: Date:
1997 SUPRA   (RM502U)
DTC P0135 Heated Oxygen Sensor Heater Circuit 
Malfunctio

Page 613 of 1807

TOYOTA SUPRA 1997  Service Repair Manual DI-198
- DIAGNOSTICSENGINE (2JZ-GTE)
426 Author: Date:
1997 SUPRA   (RM502U)
2 Check resistance of heated oxygen sensor heater (See page SF-82).
NG Replace heated oxygen sensor.
OK
Check and repair

Page 614 of 1807

TOYOTA SUPRA 1997  Service Repair Manual - DIAGNOSTICSENGINE (2JZ-GTE)
DI-199
427 Author: Date:
1997 SUPRA   (RM502U)
DTC P0136 Heated Oxygen Sensor Circuit Malfunction
(Bank 1 Sensor 2)
CIRCUIT DESCRIPTION
Refer to ºInsufficient Coolant

Page 615 of 1807

TOYOTA SUPRA 1997  Service Repair Manual DI-200
- DIAGNOSTICSENGINE (2JZ-GTE)
428 Author: Date:
1997 SUPRA   (RM502U)
3 Check the output voltage of heated oxygen sensor (bank 1 sensor 2).
PREPARATION:
(a) Connect  the OBD II scan tool or T

Page 616 of 1807

TOYOTA SUPRA 1997  Service Repair Manual - DIAGNOSTICSENGINE (2JZ-GTE)
DI-201
429 Author: Date:
1997 SUPRA   (RM502U)
DTC P0171 System too Lean (Fuel Trim)
DTC P0172 System too Rich (Fuel Trim)
CIRCUIT DESCRIPTION
ºFuel trimº refers to t