2007 TOYOTA SIENNA Service Repair Manual

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Page 369 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–51
ES
FAIL-SAFE CHART
If any of the following DTCs are set, the ECM enters fail-safe
mode to allow the vehicle to be driven temporarily.
HINT:
• *1

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–51
ES
FAIL-SAFE CHART
If any of the following DTCs are set, the ECM enters fail-safe
mode to allow the vehicle to be driven temporarily.
HINT:
• *1: The vehicle can be driven slowly when the accelerator
pedal is depressed firmly and slowly. If the accelerator
pedal is depressed quickly, the vehicle may speed up and
slow down erratically.
• *2: Misfire related fail-safe operations occur when catalyst
overheat malfunctions occur.
DTCs Components Fail-Safe OperationsFail-Safe Deactivation
Conditions
P0031, P0032, P0051 and P0052Air-Fuel Ratio (A/F) Sensor
HeaterECM turns off A/F sensor heater Ignition switch off
P0037, P0038, P0057 and P0058Heated Oxygen (HO2) Sensor
HeaterECM turns off HO2 sensor heater Ignition switch off
P0100, P0102 and P0103 Mass Air Flow (MAF) MeterECM calculates ignition timing
according to engine speed and
throttle valve positionPass condition detected
P0110, P0112 and P0113Intake Air Temperature (IAT)
SensorECM estimates IAT to be 20
C
(68
F)Pass condition detected
P0115, P0117 and P0118Engine Coolant Temperature
(ECT) SensorECM estimates ECT to be 80
C
(176
F)Pass condition detected
P0120, P0121, P0122, P0123,
P0220, P0222, P0223, P0604,
P0606, P0607, P0657, P2102,
P2103, P2111, P2112, P2118,
P2119 and P2135Electronic Throttle Control
System (ETCS)ECM cuts off throttle actuator
current and throttle valve returned
to 6.5
throttle position by return
spring
ECM then adjusts engine output
by controlling fuel injection
(intermittent fuel-cut) and ignition
timing in accordance with
accelerator pedal opening angle,
to allow vehicle to continue at
minimal speed*1Pass condition detected and then
ignition switch turned off
P0300, P0301, P0302, P0303,
P0304, P0305 and P0306*2• Fuel injector
• Electronic Throttle Control
System (ETCS)When misfire occurs, fuel cut is
performed for catalyst overheat
malfunction prevention
• During normal load and
normal engine speed (MIL is
blinking)
- Fuel cut is performed on
malfunctioning cylinder
• During high load and high
engine speed (MIL is
blinking)
- Throttle valve opening angle
control is performed
- All cylinder fuel cut or
malfunction cylinder fuel cutPass condition detected and then
ignition switch turned OFF
P0327, P0328, P0332 and P0333 Knock SensorECM sets ignition timing to
maximum retardIgnition switch off
P0351 to P0356 Igniter ECM cuts fuel Pass condition detected
P2120, P2121, P2122, P2123,
P2125, P2127, P2128 and P2138Accelerator Pedal Position (APP)
SensorAPP sensor has 2 sensor circuits:
Main and Sub
If either of circuits malfunctions,
ECM controls engine using the
other circuit
If both of circuits malfunction,
ECM regards accelerator pedal
as being released. As a result,
throttle valve is closed and engine
idlesPass condition detected and then
ignition switch turned off

Page 370 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–642GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DIAGNOSTIC TROUBLE CODE CHART
HINT:
The parameters listed in the chart may not confirm exactly to
those read during the DTC check due to the ty

Page 371 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–65
ES
P0017 Crankshaft Position -
Camshaft Position
Correlation (Bank 1
Sensor B)1. Mechanical system
(Timing chain has
jumped teeth or chain
s

Page 372 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–662GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
P0031 Oxygen (A/F) Sensor
Heater Control Circuit
Low (Bank 1 Sensor
1)1. Open in A/F sensor
heater circuit
2. A/F sensor heater
3. A/F senso

ES–662GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
P0031 Oxygen (A/F) Sensor
Heater Control Circuit
Low (Bank 1 Sensor
1)1. Open in A/F sensor
heater circuit
2. A/F sensor heater
3. A/F sensor heater
relay
4. ECMComes on DTC storedES-101
P0032 Oxygen (A/F) Sensor
Heater Control Circuit
High (Bank 1 Sensor
1)1. Short in A/F sensor
heater circuit
2. A/F sensor heater
3. A/F sensor heater
relay
4. ECMComes on DTC storedES-101
P0037 Oxygen Sensor
Heater Control Circuit
Low (Bank 1 Sensor
2)1. Open in HO2
sensor heater circuit
2. HO2 sensor heater
3. EFI relay
4. ECMComes on DTC storedES-109
P0038 Oxygen Sensor
Heater Control Circuit
High (Bank 1 Sensor
2)1. Open in HO2
sensor heater circuit
2. HO2 sensor heater
3. EFI relay
4. ECMComes on DTC storedES-109
P0051 Oxygen (A/F) Sensor
Heater Control Circuit
Low (Bank 2 Sensor
1)1. Open in A/F sensor
heater circuit
2. A/F sensor heater
3. A/F sensor heater
relay
4. ECMComes on DTC storedES-101
P0052 Oxygen (A/F) Sensor
Heater Control Circuit
High (Bank 2 Sensor
1)1. Short in A/F sensor
heater circuit
2. A/F sensor heater
3. A/F sensor heater
relay
4. ECMComes on DTC storedES-101
P0057 Oxygen Sensor
Heater Control Circuit
Low (Bank 2 Sensor
2)1. Open in HO2
sensor heater circuit
2. HO2 sensor heater
3. EFI relay
4. ECMComes on DTC storedES-109
P0058 Oxygen Sensor
Heater Control Circuit
High (Bank 2 Sensor
2)1. Open in HO2
sensor heater circuit
2. HO2 sensor heater
3. EFI relay
4. ECMComes on DTC storedES-109
P0100 Mass or Volume Air
Flow Circuit1. Open or short in
MAF meter circuit
2. MAF meter
3. ECMComes on DTC storedES-116
P0101 Mass or Volume Air
Flow Circuit Range /
Performance
ProblemMAF meter Comes on DTC storedES-122
P0102 Mass or Volume Air
Flow Circuit Low
Input1. Open in MAF
meter circuit
2. Short in ground
circuit
3. MAF meter
4. ECMComes on DTC storedES-116
P0103 Mass or Volume Air
Flow Circuit High
Input1. Short in MAF
meter circuit (+B
circuit)
2. MAF meter
3. ECMComes on DTC storedES-116 DTC Code Detection Item Suspected Trouble
AreaMIL Memory See page

Page 373 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–67
ES
P0110 Intake Air
Temperature Circuit1. Open or short in
IAT sensor circuit
2. IAT sensor (built
into MAF meter)
3. ECMComes on DTC storedES-1

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–67
ES
P0110 Intake Air
Temperature Circuit1. Open or short in
IAT sensor circuit
2. IAT sensor (built
into MAF meter)
3. ECMComes on DTC storedES-124
P0111 Intake Air
Temperature Sensor
Gradient Too HighMass air flow meter
assemblyComes on DTC storedES-130
P0112 Intake Air
Temperature Circuit
Low Input1. Short in IAT sensor
circuit
2. IAT sensor (built
into MAF meter)
3. ECMComes on DTC storedES-124
P0113 Intake Air
Temperature Circuit
High Input1 . O p e n i n I AT s e n s o r
circuit
2. IAT sensor (built
into MAF meter)
3. ECMComes on DTC storedES-124
P0115 Engine Coolant
Temperature Circuit1. Open or short in
ECT sensor circuit
2. ECT sensor
3. ECMComes on DTC storedES-133
P0116 Engine Coolant
Temperature Circuit
Range / Performance
Problem1. Thermostat
2. ECT sensorComes on DTC storedES-139
P0117 Engine Coolant
Temperature Circuit
Low Input1. Short in ECT
sensor circuit
2. ECT sensor
3. ECMComes on DTC storedES-133
P0118 Engine Coolant
Temperature Circuit
High Input1. Open in ECT
sensor circuit
2. ECT sensor
3. ECMComes on DTC storedES-133
P011B Engine Coolant
Temperature / Intake
Air Temperature
Correlation1. IAT sensor
2. ECT sensor
3. ECMComes on DTC storedES-142
P0120 Throttle / Pedal
Position Sensor /
Switch "A" Circuit1. Throttle Position
(TP) sensor (built into
throttle body)
2. ECMComes on DTC storedES-145
P0121 Throttle / Pedal
Position Sensor /
Switch "A" Circuit
Range / Performance
ProblemTP sensor (built into
throttle body)Comes on DTC storedES-152
P0122 Throttle / Pedal
Position Sensor /
Switch "A" Circuit
Low Input1. TP sensor (built
into throttle body)
2. Short in VTA1
circuit
3. Open in VC circuit
4. ECMComes on DTC storedES-145
P0123 Throttle / Pedal
Position Sensor /
Switch "A" Circuit
High Input1. TP sensor (built
into throttle body)
2. Open in VTA1
circuit
3. Open in E2 circuit
4. Short between VC
and VTA1 circuits
5. ECMComes on DTC storedES-145 DTC Code Detection Item Suspected Trouble
AreaMIL Memory See page

Page 374 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–682GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
P0125 Insufficient Coolant
Temperature for
Closed Loop Fuel
Control1. Cooling system
2. Engine coolant
temperature sensor
3. ThermostatComes

Page 375 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–69
ES
P0157 Oxygen Sensor
Circuit Low Voltage
(Bank 2 Sensor 2)1. Open in HO2
sensor (bank 1, 2
sensor 2) circuit
2. HO2 sensor (bank
1, 2 sensor

Page 376 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–702GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
P0172 System Too Rich
(Bank 1)1. Injector leakage or
blockage
2. MAF meter
3. ECT sensor
4. Ignition system
5. Fuel pressure
6. Gas leakage fr

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