TOYOTA SIENNA 2007 Service Repair Manual

TOYOTA SIENNA 2007 Service Repair Manual SIENNA 2007 TOYOTA TOYOTA https://www.carmanualsonline.info/img/14/57466/w960_57466-0.png TOYOTA SIENNA 2007 Service Repair Manual
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TOYOTA SIENNA 2007  Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEMES–165
ES
HINT:
This DTC relates to the thermostat.
DESCRIPTION
This DTC is set when the Engine Coolant Temperature (ECT) does not reach 75C (167F) despi

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TOYOTA SIENNA 2007  Service Repair Manual ES–1662GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM
ES
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester. The

Page 473 of 3000

TOYOTA SIENNA 2007  Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEMES–167
ES
Result
HINT:
If any DTCs other than P0128 are output, troubleshoot 
those DTCs first.
B
A
(a) Check for defects in the cooling system that migh

Page 474 of 3000

TOYOTA SIENNA 2007  Service Repair Manual ES–1682GR-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.
DESCRIPTI

Page 475 of 3000

TOYOTA SIENNA 2007  Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEMES–169
ES
MONITOR DESCRIPTION
Active Air-Fuel Ratio Control
The ECM usually performs air-fuel ratio feedback control so that the Air-Fuel Ratio (A/F) sen

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TOYOTA SIENNA 2007  Service Repair Manual ES–1702GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM
ES
Active air-fuel ratio control is performed for approximately 15 to 20 seconds while driving with a warm 
engine. During active air-fuel ratio c

Page 477 of 3000

TOYOTA SIENNA 2007  Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEMES–171
ES
A080024E08

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TOYOTA SIENNA 2007  Service Repair Manual ES–1722GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM
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High or Low Impedance of Heated Oxygen (HO2) Sensor (DTCs P0136 and P0156 or P0137 and 
P0157)
During normal air-fuel ratio feedback control, t

Page 479 of 3000

TOYOTA SIENNA 2007  Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEMES–173
ES
TYPICAL ENABLING CONDITIONS
All:
Heated Oxygen Sensor Output Voltage (Output Voltage, High Voltage and Low Voltage):
Heated Oxygen Sensor Imped

Page 480 of 3000

TOYOTA SIENNA 2007  Service Repair Manual ES–1742GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM
ES
Heated Oxygen Sensor Output Voltage (High output voltage):
Heated Oxygen Sensor Impedance (Low):
Heated Oxygen Sensor Impedance (High):
Heated
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