ES–124
2GR-FE ENGINE CONTROL SYSTEM
– SFI SYSTEM
ES
HINT:
•
Sensor 2 refers to the sensor mounted behind the Three-Way Catalytic Converter (TWC) and located
far from the engine assembly.
•
When any of these DTCs are set, the ECM enters fail-safe mode. The ECM turns off the Heated
Oxygen (HO2) Sensor heater in fail-safe mode. Fail-safe mode continues until the engine switch is
turned off.
•
The ECM provides a pulse width modulated control circuit to adjust the current through the heater. The
HO2 sensor heater circuit uses a relay on the B+ side of the circuit.
DTC No.
DTC Detection Condition
Trouble Area
P0037
P0057
Heated Oxygen (HO2) sensor heater current is less
than 0.3 A (1 trip detection logic)
•
Open in HO2 sensor heater circuit
•
HO2 sensor heater
•
Engine room junction block (EFI relay)
•
ECM
P0038
P0058
Heated Oxygen (HO2) sensor heater current is more
than 2 A (1 trip detection logic)
•
Short in HO2 sensor heater circuit
•
HO2 sensor heater
•
Engine room junction block (EFI relay)
•
ECM
Atmospheric Air
Housing
Platinum Electrode
Heater
Coating (Ceramic)
Exhaust Gas
Cover
Ideal Air-Fuel Mixture
Richer - Air-Fuel Ratio - Leaner
Output Voltage
Solid Electrolyte
(Zirconia Element)
A088111E14
Reference (System Diagram of Bank 1 Sensor 2):
From
Battery
EFI MAIN
EFI Relay
Ground
Heater
Sensor
HO2 Sensor
OX1B
OX1B
EX1B
MREL
HT1B
+B
E2
HT1B
ECM
Duty
Control
EFI No. 3
A103832E40
Содержание 2GR-FE
Страница 176: ...ES 20 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES NEXT 20 CONDUCT CONFIRMATION TEST END ...
Страница 247: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 91 ES OK REPLACE ECM See page ES 518 ...
Страница 412: ...ES 256 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A END ...
Страница 447: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 291 ES OK REPLACE ECM See page ES 518 ...
Страница 556: ...ES 400 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A REPLACE TCM ...
Страница 630: ...ES 474 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES OK REPLACE ECM See page ES 518 ...
Страница 651: ...2GR FE ENGINE CONTROL SYSTEM CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY ES 487 ES 22 INSTALL ENGINE UNDER COVER LH ...
Страница 658: ...2GR FE ENGINE CONTROL SYSTEM VVT SENSOR ES 493 ES 22 INSTALL ENGINE UNDER COVER LH ...
Страница 719: ...FU 6 2GR FE FUEL FUEL SYSTEM FU PARTS LOCATION ENGINE ROOM RELAY BLOCK ECM FUEL INJECTOR FUEL PUMP A136014E01 ...
Страница 897: ...2GR FE STARTING SMART KEY SYSTEM ST 35 ST OK REPLACE MAIN BODY ECU ...
Страница 923: ...2GR FE STARTING SMART KEY SYSTEM ST 61 ST OK REPLACE MAIN BODY ECU ...
Страница 935: ...2GR FE STARTING SMART KEY SYSTEM ST 73 ST OK REPLACE MAIN BODY ECU ...
Страница 940: ...ST 78 2GR FE STARTING SMART KEY SYSTEM ST OK REPLACE MAIN BODY ECU ...
Страница 958: ...ST 96 2GR FE STARTING SMART KEY SYSTEM ST OK END MAIN BODY ECU DEFECTIVE ...