2007 TOYOTA SIENNA Service Repair Manual

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Page 505 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–199
ES
HINT:
If the system is still malfunctioning, the MIL will be
illuminated during procedure "F".
NOTICE:
If the conditions in this test

Page 506 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–2002GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DESCRIPTION
• This DTC is designed to detect a malfunction in the fuel pump (FUEL PUMP) relay circuit. When the
system is normal, the batter

Page 507 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–201
ES
WIRING DIAGRAM
This troubleshooting procedure is based on the premise that the engine is started. If the engine is not
started, proceed to the

Page 508 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–2022GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(b) Turn the ignition switch to the ON position and turn the
intelligent tester ON.
(c) Enter the following menus: DIAGNOSIS / ENHANCED
OBD I

Page 509 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–203
ES
(a) Remove the FUEL PUMP relay from the engine room
junction block.
(b) Disconnect the E11 ECM connector.
(c) Measure the resistance accordi

Page 510 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–2042GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DESCRIPTION
When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. High HC
concentration levels can cause i

ES–2042GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DESCRIPTION
When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. High HC
concentration levels can cause increase in exhaust emission levels. Extremely high concentrations of HC
can also cause increases in the Three-Way Catalytic Converter (TWC) temperature, which may cause
damage to the TWC. To prevent this increase in emissions and to limit the possibility of thermal damage,
the ECM monitors the misfire rate. When the temperature of the TWC reaches the point of thermal
degradation, the ECM blinks the MIL. To monitor misfires, the ECM uses both the VVT sensor and the
Crankshaft Position (CKP) sensor. The VVT sensor is used to identify any misfiring cylinders and the CKP
sensor is used to measure variations in the crankshaft rotation speed. Misfires are counted when the
crankshaft rotation speed variations exceed predetermined thresholds. If the misfire count exceeds the
threshold levels, the ECM illuminates the MIL and sets a DTC.
DTC P0300 Random / Multiple Cylinder Misfire Detected
DTC P0301 Cylinder 1 Misfire Detected
DTC P0302 Cylinder 2 Misfire Detected
DTC P0303 Cylinder 3 Misfire Detected
DTC P0304 Cylinder 4 Misfire Detected
DTC P0305 Cylinder 5 Misfire Detected
DTC P0306 Cylinder 6 Misfire Detected
DTC No. DTC Detection Condition Trouble Area
P0300Simultaneous misfiring of several cylinders occurs and one of
following conditions below is detected (2 trip detection logic):
• High temperature misfire occurs in Three-Way Catalytic
Converter (TWC) (MIL blinks)
• Emission deterioration misfire occurs (MIL illuminates)• Open or short in engine wire harness
• Connector connection
• Vacuum hose connections
• Ignition system
• Injector
• Fuel pressure
• Mass Air Flow (MAF) meter
• Engine Coolant Temperature (ECT) sensor
• Compression pressure
• Valve clearance
• Valve timing
• PCV valve and hose
• PCV hose connections
• Intake system
•ECM P0301
P0302
P0303
P0304
P0305
P0306Misfiring of specific cylinder occurs and one of following
conditions below is detected (2 trip detection logic):
• High temperature misfire occurs in Three-Way Catalytic
Converter (TWC) (MIL blinks)
• Emission deterioration misfire occurs (MIL illuminates)
A093767E07

Page 511 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–205
ES
When multiple DTCs for misfiring cylinders are set, but DTC P0300 is not set, it indicates that misfires
have been detected in different cylin

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–205
ES
When multiple DTCs for misfiring cylinders are set, but DTC P0300 is not set, it indicates that misfires
have been detected in different cylinders at different times. DTC P0300 is only set when several misfiring
cylinders are detected at the same time.
MONITOR DESCRIPTION
The ECM illuminates the MIL and sets a DTC when either one of the following conditions, which could
cause emission deterioration, is detected (2 trip detection logic).
• Within the first 1000 crankshaft revolutions of the engine starting, an excessive misfiring rate
(approximately 20 to 50 misfires per 1000 crankshaft revolutions) occurs once.
• An excessive misfiring rate (approximately 20 to 50 misfires per 1,000 crankshaft revolutions) occurs a
total of 4 times.
The ECM flashes the MIL and sets a DTC when either one of the following conditions, which could cause
the Three-Way Catalytic Converter (TWC) damage, is detected (2 trip detection logic).
• At a high engine rpm, a catalyst damage misfire, which monitored every 200 crankshaft revolutions,
occurs once.
• At a normal engine rpm, a catalyst damage misfire, which monitored every 200 crankshaft revolutions,
occurs 3 times.
HINT:
If a catalyst damage misfire occurs, the ECM informs the driver by flashing the MIL.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
Misfire:
Monitor period of emission-related-misfire:
Related DTCsP0300: Multiple cylinder misfire
P0301: Cylinder 1 misfire
P0302: Cylinder 2 misfire
P0303: Cylinder 3 misfire
P0304: Cylinder 4 misfire
P0305: Cylinder 5 misfire
P0306: Cylinder 6 misfire
Required Sensors / Components (Main) Injector, Ignition coil, Spark plug
Required Sensors / Components (Related)Crankshaft, Camshaft, Engine coolant temperature and intake air temperature
sensors and Mass air flow meter
Frequency of Operation Continuous
Duration1000 to 4000 crankshaft revolutions: Emission related misfire
200 to 600 crankshaft revolutions: Catalyst damaged misfire
MIL Operation2 driving cycles: Emission related misfire
MIL flashes immediately: Catalyst damaged misfire
Sequence of Operation None
The monitor will run whenever these DTCs are not
presentP0100, P0101, P0102, P0103 (MAF Sensor), P0110, P0112, P0113 (IAT Sensor),
P0115, P0116, P0117, P0118 (ECT Sensor), P0120, P0121, P0122, P0123, P0220,
P0222, P0223, P2135 (TP Sensor), P0125 (Insufficient ECT for Closed Loop),
P0327, P0328, P0332, P0333 (Knock Sensor), P0335 (CKP Sensor), P0340, (CMP
Sensor), P0500 (VSS)
Battery voltage 8 V or more
VVT system No operate by scan tool
Engine RPM 450 to 6500 rpm
Either of the following conditions is met Condition (a) or (b)
(a) Engine start ECT More than -7
C (19F)
(b) ECT More than 20
C (68F)
Fuel-cut OFF
First 1000 revolutions after engine start, or check mode Crankshaft 1000 revolutions

Page 512 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–2062GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
Monitor period of catalyst-damage-misfire (MIL blinks):
TYPICAL MALFUNCTION THRESHOLDS
Monitor period of emission-related-misfire:
Monitor peri

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