A60548
32 1 4 5
-20 0 20 40 60 80 100 0.1 0.2 0.3 0.51 2 3 5 10 20 30
TemperatureC(F)
Resistance kW
(-4) (32) (80) (140)(104) (212)(176)
Air
VG
EVG+B
THA E2
Acceptable
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-137
327 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 INSPECT MASS AIR FLOW METER
(a) Remove the MAF meter.
(b) Check the output voltage.
(1) Apply battery voltage across terminals +B and
EVG.
(2) Connect the positive (+) tester probe to terminal
VG, and negative (-) tester probe to terminal EVG.
(3) Blow air into the MAF meter, and check that the volt-
age fluctuates.
(c) Measure the resistance of the IAT terminals.
Standard:
Tester ConnectionConditionSpecified Condition
4 (THA) - 5 (E2)-20C (-4F)13.6 to 18.4 kW
4 (THA) - 5 (E2)20C (68F)2.21 to 2.69 kW
4 (THA) - 5 (E2)60C (140F)0.49 to 0.67 kW
NG REPLACE MASS AIR FLOW METER
OK
S01196S01699
30
20
10
5
3
02040 0.11
0.3
0.2 0.52
60 80 100 -20
(-4) (104) (140) (176)(32) (68) (212)
A81700
Ohmmeter
Acceptable
Temperature C (F)
Resistance kW
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
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17 READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (INTAKE AIR
TEMPERATURE AND MASS AIR FLOW RATE)
(a) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(b) Turn the ignition switch ON.
(c) Check the intake air temperature.
(1) On the hand-held tester or the OBD II scan tool, enter the following menus: DIAGNOSIS / EN-
HANCED OBD II / DATA LIST / ALL / INTAKE AIR. Read the values.
Temperature: Equivalent to ambient temperature
(d) Check the air flow rate.
(1) On the hand-held tester or the OBD II scan tool, enter the following menus: DIAGNOSIS / EN-
HANCED OBD II / DATA LIST / ALL / MAF. Read the values.
Standard:
ConditionAir Flow Rate (gm/s)
Ignition switch ON (do not start engine)0
Idling0.5 to 5
Running without load (2,500 rpm)3 to 10
Idling to quickly acceleratingAir flow rate fluctuates
NG REPLACE MASS AIR FLOW METER
OK
18 INSPECT ENGINE COOLANT TEMPERATURE SENSOR (RESISTANCE)
(a) Remove the ECT sensor.
(b) Measure the resistance between the terminals.
Standard:
Tester ConnectionConditionSpecified Condition
1 - 220C (68F)2.32 to 2.59 kW
1 - 280C (176F)0.310 to 0.326 kW
NOTICE:
If checking the ECT sensor in water, be careful not to allow
water to contact the terminals. After the check, dry the sen-
sor.
HINT:
Alternate procedure: Connect an ohmmeter to the installed
ECT sensor and read the resistance. Use an infrared thermom-
eter to measure the engine temperature in the immediate vicin-
ity of the sensor. Compare these values to the resistance/tem-
perature graph. Change the engine temperature (warm up or
allow to cool down) and repeat the test.
NG REPLACE ENGINE COOLANT TEMPERATURE
SENSOR
OK
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-945
1135 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
MONITOR STRATEGY
Related DTCs
P0741:
Shift solenoid valve DSL/OFF malfunction
Shift solenoid valve DSL/ON malfunction
Required sensors/Components
Shift solenoid valve DSL, Speed sensor (NT), Speed sensor (NC),Crankshaft posi-
tion sensor (NE), Throttle position sensor (VPA1), Mass air flow sensor (MAF),
Transmission temperature sensor (THO1), Engine coolant temperature sensor
(ECT)
Frequency of operationContinuous
Duration
OFF malfunction
3.5 sec.
ON malfunction
1.8 sec.
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ALL:
Transmission rangeºDº
ECT (Engine coolant temperature)60°C (140°F) or more
TFT (Transmission fluid temperature)-20C (-4F) or more
TFT sensor circuitNot circuit malfunction
ECT sensor circuitNot circuit malfunction
Turbine speed sensor circuitNot circuit malfunction
Intermediate shaft speed sensor circuitNot circuit malfunction
Output speed sensor circuitNot circuit malfunction
Shift solenoid valve SL1 circuitNot circuit malfunction
Shift solenoid valve SL2 circuitNot circuit malfunction
Shift solenoid valve S4 circuitNot circuit malfunction
Shift solenoid valve DSL circuitNot circuit malfunction
Electronic throttle systemNot circuit malfunction
OFF malfunction
ECM lock-up commandON
ECM selected gear3rd or 4th
Vehicle speed25 km/h (15.5 mph) or more
ON malfunction
ECM lock-up commandOFF
ECM selected gear3rd or 4th
Throttle valve opening angle8% or more
Vehicle speed25 to 60 km/h (15.5 to 37.2 mph)
TYPICAL MALFUNCTION THRESHOLDS
Either of the following conditions is met: OFF malfunction or ON malfunction
OFF malfunction
Engine speed - Input (turbine) speed100 rpm or more
ON malfunction
2 detections are necessary per driving cycle:
1st detection; temporary flag ON
2nd detection; pending fault code ON
Vehicle speed must be under 10 km/h (6.2 mph) once before 2nd detection
Diffierence between engine speed and input (turbine) speedLess than 35 rpm
05ESJ-05
05-2
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
192 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
PART AND SYSTEM NAME LIST
This reference list indicates the part names used in this manual along with their definitions.
TOYOTA/LEXUS nameDefinition
Toyota HCAC system, Hydro-carbon Adsorptive Catalyst
(HCAC) system, HC adsorptive three-way catalystHC adsorptive three-way catalytic converter
Variable valve timing sensor, VVT sensorCamshaft position sensor
Variable valve timing system, VVT systemCamshaft timing control system
Camshaft timing oil control valve, Oil control valve, OCV,
VVT, VSVCamshaft timing oil control valve
Variable timing and lift, VVTLCamshaft timing and lift control
Crankshaft position sensor ºAºCrankshaft position sensor
Engine speed sensorCrankshaft position sensor
THAIntake air temperature
Knock control moduleEngine knock control module
Knock sensorEngine knock sensor
Mass or volume air flow circuitMass air flow meter circuit
Vacuum sensorManifold air pressure sensor
Internal control module, Control module, Engine control
ECU, PCMPower train control module
FC idleDeceleration fuel cut
Idle air control valveIdle speed control
CCV, Canister close valve VSV for canister controlEvaporative emissions canister vent valve
EVAP VSV, Vacuum switching valve assembly No. 1, EVAP
VSV, Purge VSVEvaporative emissions canister purge valve
VSV for pressure switching valve, Bypass VSVEvaporative emission pressure switching valve
Vapor pressure sensor, EVAP pressure sensor, Evaporative
emission control system pressure sensorFuel tank pressure sensor
Charcoal canisterEvaporative emissions canister
ORVR systemOn-board refueling vapor recovery system
Intake manifold runner controlIntake manifold tuning system
Intake manifold runner valve, IMRV, IACV (runner valve)Intake manifold tuning valve
Intake control VSVIntake manifold tuning solenoid valve
AFSAir fuel ratio sensor
O2 sensorHeater oxygen sensor
Oxygen sensor pumping current circuitOxygen sensor output signal
Oxygen sensor reference ground circuitOxygen sensor signal ground
Accel position sensorAccelerator pedal position sensor
Throttle actuator control motor, Actuator control motor, Elec-
tronic throttle motor, Throttle control motorElectronic throttle actuator
Electronic throttle control system, Throttle actuator control
systemElectronic throttle control system
Throttle/pedal position sensor, Throttle/pedal position switch,
Throttle position sensor/switchThrottle position sensor
Turbo press sensorTurbocharger pressure sensor
Turbo VSVTurbocharger pressure control solenoid valve
P/S pressure switchPower-steering pressure switch
VSV for ACMActive control engine mount
Speed sensor, Vehicle speed sensor ºAº, Speed sensor for
skid control ECUVehicle speed sensor
ATF temperature sensor, Trans. fluid temp. sensor, ATF
temperature sensor ºAºTransmission fluid temperature sensor
Electronic controlled automatic transmission, ECTElectronically controlled automatic
Intermediate shaft speed sensor ºAºCounter gear speed sensor
051ZH-16
05-48
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may be different than your readings depending on the type of instrument used
and other factors.
During the DTC check, refer to the table below if a malfunction code is displayed. For details about each
code, refer to the page number in the DTC chart's left column.
DTC No.
(See Page)Detection ItemTrouble AreaMIL*1Memory
P0010
(05-55)Camshaft Position ºAº Actuator
Circuit (Bank 1)Open or short in OCV circuit
OCV valve
ECM
P0011
(05-61)Camshaft Position ºAº -Timing
Over - Advanced or System Per-
formance (Bank 1)Valve timing
OCV
VVT controller assembly
ECM
P0012
(05-61)Camshaft Position ºAº -Timing
Over- Retarded (Bank 1)Same as DTC No. P0011
P0016
(05-69)Crankshaft Position - Camshaft
Position Correlation (Bank 1 Sen-
sor 1)Mechanical system (jumped tooth of timing chain, chain
stretched)
ECM
P0031*3
(05-71)
Oxygen (A/F) Sensor Heater Cir-
cuit Low (Bank 1 Sensor 1)
Open in heater circuit of A/F sensor
A/F sensor heater
EFI relay
ECM
P0032*3
(05-71)
Oxygen (A/F) Sensor Heater Cir-
cuit High (Bank 1 Sensor 1)
Short in heater circuit of A/F sensor
A/F sensor heater
EFI relay
ECM
P0037
(05-76)Oxygen Sensor Heater Control
Circuit Low (Bank 1 Sensor 2)
Open or short in heater circuit of heated oxygen sensor
Heated oxygen sensor heater
EFI relay
ECM
P0038
(05-76)Oxygen Sensor Heater Control
Circuit High (Bank 1 Sensor 2)Same as DTC No. P0037
P0100
(05-81)Mass or Volume Air Flow Circuit
Open or short in mass air flow meter circuit
Mass air flow meter
ECM
P0101
(05-88)Mass or Volume Air Flow Circuit
Range/Performance ProblemMass air flow meter
P0102
(05-81)Mass or Volume Air Flow Circuit
Low InputSame as DTC No. P0100
P0103
(05-81)Mass or Volume Air Flow Circuit
High InputSame as DTC No. P0100
P0110
(05-90)Intake Air Temperature Circuit
Open or short in intake air temperature sensor circuit
Intake air temperature sensor (built-in mass air flow meter)
ECM
P0112
(05-90)Intake Air Temperature Circuit
Low InputSame as DTC No. P0110
P0113
(05-90)Intake Air Temperature Circuit
High InputSame as DTC No. P0110
P0115
(05-95)Engine Coolant Temperature Cir-
cuitOpen or short in engine coolant temperature sensor circuit
Engine coolant temperature sensor
ECM
P0116
(05-100)Engine Coolant Temperature Cir-
cuit Range/Performance ProblemCooling system
Engine coolant temperature sensor
P0117
(05-95)Engine Coolant Temperature Cir-
cuit Low InputSame as DTC No. P0115
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
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239 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)P0118
(05-95)
Engine Coolant Temperature Cir-
cuit High InputSame as DTC No. P0115
P0120
(05-102)Throttle/Pedal Position Sensor/
Switch ºAº CircuitThrottle position sensor (built-in throttle body)
ECM
P0121
(05-1 11)Throttle/Pedal Position Sensor/
Switch ºAº Circuit Range/Perfor-
mance Problem
Throttle body assy (Throttle position sensor)
P0122
(05-102)Throttle/Pedal Position Sensor/
Switch ºAº Circuit Low Input
Throttle position sensor (built-in throttle body)
Short in VTA1 circuit
Open in VC circuit
ECM
P0123
(05-102)Throttle/Pedal Position Sensor/
Switch ºAº Circuit High Input
Throttle position sensor (built-in throttle body)
Open in VTA1 circuit
Open in E2 circuit
VC and VTA1 circuits are short-circuited
ECM
P0125
(05-1 13)Insufficient Coolant Temperature
for Closed Loop Fuel ControlCooling system
Engine coolant temperature sensor
Thermostat
P0128
(05-1 15)Coolant Thermostat (Coolant
Temperature Below Thermostat
Regulating Temperature)Thermostat
Cooling system
Engine coolant temperature sensor
ECM
P0136
(05-1 18)Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 2)
Open or short in heated oxygen sensor (bank 1 sensor 2) cir-
cuit
Heated oxygen sensor (bank 1 sensor 2)
Heated oxygen sensor heater (bank 1 sensor 2)
A/F sensor
A/F sensor heater
EFI relay
P0137
(05-1 18)Oxygen Sensor Circuit Low Volt-
age (Bank 1 Sensor 2)Open or short in heated oxygen sensor circuit (sensor to ECM)
Open or short in heated oxygen sensor internal circuit
P0138
(05-1 18)Oxygen Sensor Circuit High Volt-
age (Bank 1 Sensor 2)
Short in heated oxygen sensor (bank 1 sensor 2) circuit
Short in heated oxygen sensor (bank 1 sensor 2) internal cir-
cuit
ECM internal circuit malfunction
P0171
(05-132)System too Lean (Bank 1)
Air induction system
Injector blockage
Mass air flow meter
Engine coolant temperature sensor
Fuel pressure
Gas leakage in exhaust system
Open or short in A/F sensor circuit
A/F sensor
A/F sensor heater
EFI relay
Open or short in A/F sensor heater and EFI relay circuits
PCV hose connection
PCV hose
P0172
(05-132)System too Rich (Bank 1)
Injector leak, blockage
Mass air flow meter
Engine coolant temperature sensor
Ignition system
Fuel pressure
Gas leakage in exhaust system
Open or short in A/F sensor circuit
A/F sensor
A/F sensor heater
Open or short in A/F sensor heater and EFI relay circuits
EFI relay
05-50
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
240 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)P0220
(05-102)
Throttle/Pedal Position Sensor/
Switch ºBº CircuitThrottle position sensor (built-in throttle body)
ECM
P0222
(05-102)Throttle/Pedal Position Sensor/
Switch ºBº Circuit Low Input
Throttle position sensor (built-in throttle body)
Short in VTA2 circuit
Open in VC circuit
ECM
P0223
(05-102)Throttle/Pedal Position Sensor/
Switch ºBº Circuit High Input
Throttle position sensor (built-in throttle body)
Open in VTA2 circuit
Open in E2 circuit
VC and VTA2 circuits are short-circuited
ECM
P0300
(05-146)Random/Multiple Cylinder Misfire
Detected
Open or short in engine wire
Connector connection
Vacuum hose connection
Ignition system
Injector
Fuel pressure
Mass air flow meter
Engine coolant temp. sensor
Compression pressure
Valve clearance
Valve timing
PCV hose connection
PCV hose
ECM
*2
P0301
(05-146)Cylinder 1 Misfire DetectedSame as DTC No. P0300*2
P0302
(05-146)Cylinder 2 Misfire DetectedSame as DTC No. P0300*2
P0303
(05-146)Cylinder 3 Misfire DetectedSame as DTC No. P0300*2
P0304
(05-146)Cylinder 4 Misfire DetectedSame as DTC No. P0300*2
P0325
(05-161)Knock Sensor 1 Circuit (Bank 1
or Single Sensor)Open or short in knock sensor circuit
Knock sensor (under-torqued or loose)
ECM
P0327
(05-161)Knock Sensor 1 Circuit Low Input
(Bank 1 or Single Sensor)Short in knock sensor circuit
Knock sensor
ECM
P0328
(05-161)Knock Sensor 1 Circuit High In-
put (Bank 1 or Single Sensor)Open in knock sensor circuit
Knock sensor
ECM
P0335
(05-166)Crankshaft Position Sensor ºAº
Circuit
Open or short in crankshaft position sensor circuit
Crankshaft position sensor
Signal plate (Crankshaft position sensor plate No. 1)
ECM
P0339
(05-166)Crankshaft Position Sensor ºAº
Circuit IntermittentSame as DTC No. P0335-
P0340
(05-170)Camshaft Position Sensor ºAº
Circuit (Bank 1 or Single Sensor)
Open or short in camshaft position sensor circuit
Camshaft position sensor
Camshaft timing gear
Timing chain has a jumped tooth
ECM
P0341
(05-170)Camshaft Position Sensor ºAº
Circuit Range/Performance
(Bank 1 or Single Sensor)
Same as DTC No. P0340
100FT-04
321 4 5
-20
020 40 60
80100 0.1 0.2 0.3 0.51 235 1020 30
Temperature C (F)
Resistance kW
(-4) (32) (68) (140)(104) (212)(176)
Air
E2
THAVG
E2G+B
A93068
12
Valve
A50377
- ENGINE CONTROL SYSTEMSFI SYSTEM (3MZ-FE)
10-13
2371 Author: Date:
INSPECTION
1. INSPECT MASS AIR FLOW METER
(a) Check the output voltage.
(1) Apply battery voltage across terminals 1 (+B) and 2
(E2G).
(2) Connect the positive (+) tester probe to terminal
VG, and negative (-) tester probe to terminal E2G.
(3) Blow air into the Mass Air Flow (MAF) meter, and
check that the voltage fluctuates.
(b) Measure the resistance between terminals 4 (THA) and
5 (E2).
Standard:
ConditionSpecified Condition
-20C (-4F)13.6 to 18.4 kW
20C (68F)2.21 to 2.69 kW
60C (140F)0.493 to 0.667 kW
If the result is not as specified, replace the MAF meter.
2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE
ASSY
(a) Measure the resistance between the terminals.
Standard: 6.9 to 7.9 W at 20C (68F)
If the result is not as specified, replace the OCV assy.
(b) Connect the battery's positive (+) lead to terminal 1 and
negative (-) lead to terminal 2, and check the movement
of the valve.
NOTICE:
Confirm that the valve moves freely and does not become
stuck in any position.
If necessary, replace the OCV assy.
HINT:
If the valve cannot return properly because of foreign matter, a
small pressure leak in the advanced direction may occur and a
DTC will be output.