2006 TOYOTA RAV4 MAF

INTRODUCTION – TERMSIN–49
IN
IAT Intake Air Temperature Intake or Inlet Air Temperature
ICM Ignition Control Module -
IFI Indirect Fuel Injection Indirect Injection (IDL)
IFS Inertia Fuel-Shutoff -
ISC Idle Speed Control -
KS Knock Sensor Knock Sensor
MAF Mass Airflow Air Flow Meter
MAP Manifold Absolute Pressure Manifold Pressure Intake Vacuum
MC Mixture ControlElectric Bleed Air Control Valve (EBCV)
Mixture Control Valve (MCV)
Electric Air Control Valve (EACV)
MDP Manifold Differential Pressure -
MFI Multiport Fuel Injection Electronic Fuel Injection (EFI)
MIL Malfunction Indicator Lamp Check Engine Lamp
MST Manifold Surface Temperature -
MVZ Manifold Vacuum Zone -
NVRAM Non-Volatile Random Access Memory -
O2S Oxygen Sensor Oxygen Sensor, O2 Sensor (O2S)
OBD On-Board Diagnostic On-Board Diagnostic System (OBD)
OC Oxidation Catalytic Converter Oxidation Catalyst Converter (OC), CCo
OL Open Loop Open Loop
PAIR Pulsed Secondary Air Injection Air Suction (AS)
PCM Powertrain Control Module -
PNP Park/Neutral Position -
PROM Programmable Read Only Memory -
PSP Power Steering Pressure -
PTOX Periodic Trap OxidizerDiesel Particulate Filter (DPF)
Diesel Particulate Trap (DPT)
RAM Random Access Memory Random Access Memory (RAM)
RM Relay Module -
ROM Read Only Memory Read Only Memory (ROM)
RPM Engine Speed Engine Speed
SC Supercharger Supercharger
SCB Supercharger Bypass E-ABV
SFI Sequential Multiport Fuel Injection Electronic Fuel Injection (EFI), Sequential Injection
SPL Smoke Puff Limiter -
SRI Service Reminder Indicator -
SRT System Readiness Test -
ST Scan Tool -
TB Throttle Body Throttle Body
TBI Throttle Body Fuel InjectionSingle Point Injection
Central Fuel Injection (Ci)
TC Turbocharger Turbocharger
TCC Torque Converter Clutch Torque Converter
TCM Transmission Control Module Transmission ECU, ECT ECU
TP Throttle Position Throttle Position
TR Transmission Range -
TVV Thermal Vacuum ValveBimetallic Vacuum Switching Valve (BVSV)
Thermostatic Vacuum Switching Valve (TVSV) SAE
ABBREVIATIONSSAE TERMS TOYOTA TERMS ( )-ABBREVIATIONS

ES–422AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
FREEZE FRAME DATA
1. DESCRIPTION
Freeze frame data records the engine conditions (fuel
system, calculated load, engine coolant temperature,
fuel trim, engine speed, vehicle speed, etc.) when a
malfunction is detected. When troubleshooting, it can
help determine if the vehicle was running or stopped, the
engine was warmed up or not, the air-fuel ratio was Lean
or Rich, and other data from the time the malfunction
occurred.
HINT:
If it is impossible to duplicate the problem even though a
DTC is detected, confirm the freeze frame data.
The ECM records engine conditions in the form of freeze
frame data every 0.5 seconds. Using the intelligent
tester, 5 separate sets of freeze frame data can be
checked.
– 3 data sets before the DTC was set.
– 1 data set when the DTC was set.
– 1 data set after the DTC was set.
These data sets can be used to simulate the condition
of the vehicle around the time of the occurrence of the
malfunction. The data may assist in identifying the
cause of the malfunction, and in judging whether it
was temporary or not.
2. LIST OF FREEZE FRAME DATA
A103809E11
LABEL
(Intelligent Tester Display)Measurement Item Diagnostic Note
INJECTOR Injection period of No. 1 cylinder -
IGN ADVANCE Ignition advance -
CALC LOAD Calculated load Calculated load by ECM
VEHICLE LOAD Vehicle load -
MAF Mass air flow volumeIf approximately 0.0 g/sec.:
• Mass air flow meter power source circuit
open or short
• VG circuit open or short
If 160.0 g/sec. or more:
• E2G circuit open
ENGINE SPD Engine speed -
VEHICLE SPD Vehicle speed Speed indicated on speedometer
COOLANT TEMP Engine coolant temperatureIf -40
C (-40F), sensor circuit open
If 140
C (284F) or more, sensor circuit
shorted
INTAKE AIR Intake air temperature If -40
C (-40F), sensor circuit open
If 140
C (284F) or more, sensor circuit
shorted
AIR-FUEL RATIO Ratio compared to stoichiometric level -
PURGE DENSITY Learning value of purge density -
EVAP PURGE FLOWRatio of evaporative purge flow to intake air
volume-
EVAP PURGE VSV EVAP purge VSV duty ratio -
KNOCK CRRT VAL Correction learning value of knocking -

ES–462GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
FREEZE FRAME DATA
1. DESCRIPTION
Freeze frame data records the engine conditions (fuel
system, calculated load, engine coolant temperature,
fuel trim, engine speed, vehicle speed, etc.) when a
malfunction is detected. When troubleshooting, it can
help determine if the vehicle was running or stopped, the
engine was warmed up or not, the air-fuel ratio was Lean
or Rich, and other data from the time the malfunction
occurred.
HINT:
If it is impossible to duplicate the problem even though a
DTC is detected, confirm the freeze frame data.
The ECM records engine conditions in the form of freeze
frame data every 0.5 seconds. Using the intelligent
tester, 5 separate sets of freeze frame data can be
checked.
– 3 data sets before the DTC was set.
– 1 data set when the DTC was set.
– 1 data set after the DTC was set.
These data sets can be used to simulate the condition
of the vehicle around the time of the occurrence of the
malfunction. The data may assist in identifying the
cause of the malfunction, and in judging whether it
was temporary or not.
2. LIST OF FREEZE FRAME DATA
A103809E11
LABEL
(Intelligent Tester Display)Measurement Item Diagnostic Note
INJECTOR Injection period of No. 1 cylinder -
IGN ADVANCE Ignition advance -
CALC LOAD Calculated load Calculated load by ECM
VEHICLE LOAD Vehicle load -
MAF Mass air flow volumeIf approximately 0.0 g/sec.:
• Mass air flow meter power source circuit
open or short
• VG circuit open or short
If 160.0 g/sec. or more:
• E2G circuit open
ENGINE SPD Engine speed -
VEHICLE SPD Vehicle speed Speed indicated on speedometer
COOLANT TEMP Engine coolant temperatureIf -40
C (-40F), sensor circuit open
If 140
C (284F) or more, sensor circuit
shorted
INTAKE AIR Intake air temperature If -40
C (-40F), sensor circuit open
If 140
C (284F) or more, sensor circuit
shorted
AIR-FUEL RATIO Ratio compared to stoichiometric level -
PURGE DENSITY Learning value of purge density -
EVAP PURGE FLOWRatio of evaporative purge flow to intake air
volume-
EVAP PURGE VSV EVAP purge VSV duty ratio -
KNOCK CRRT VAL Correction learning value of knocking -

ES–462AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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:
*: 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.
DTCs Components Fail-Safe OperationsFail-Safe Deactivation
Conditions
P0031 and P0032Air-Fuel Ratio (A/F) Sensor
HeaterECM turns off A/F sensor heater. Ignition switch OFF
P0037 and P0038Heated 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 position.Pass 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
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*.Pass condition detected and then
ignition switch turned OFF
P0327 and P0328 Knock SensorECM sets ignition timing to
maximum retard.Ignition switch OFF
P0351 to P0354 Igniter ECM cuts fuel. Pass condition detected
P1550, P1551, P1552 and P1602 Generator Alternator command is fixed. 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 circuit malfunctions, ECM
controls engine using other
circuit.
If both circuits malfunction, ECM
regards accelerator pedal as
being released. As result, throttle
valve closed and engine idles.Pass condition detected and then
ignition switch turned OFF

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–47
ES
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
By reading the DATA LIST displayed on an intelligent
tester, values can be checked, including those of the
switches, sensors, and actuators, without removing any
parts. Reading the DATA LIST as the first step of
troubleshooting is one method of shortening diagnostic
time.
NOTICE:
In the table below, the values listed under Normal
Condition are for reference only. Do not depend
solely on these values when determining whether or
not a part is faulty.
(a) Warm up the engine.
(b) Turn the ignition switch OFF.
(c) Connect the intelligent tester to the DLC3.
(d) Turn the ignition switch ON.
(e) Turn the tester ON.
(f) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DATA LIST.
(g) Check the values by referring to the table below.
ECM:
Intelligent Tester Display Measurement: Range (Display) Normal Condition*1 Diagnostic Note
INJECTORInjection period of No. 1 cylinder:
Min.: 0 ms, Max.: 32.64 ms1.0 to 3.0 ms: Idling -
IGN ADVANCE Ignition timing advance for No. 1
cylinder:
Min.: -64 deg, Max.: 63.5 degBTDC 0 to 14 deg: Idling -
CALC LOADCalculated load by ECM:
Min.: 0 %, Max.: 100 %• 10 to 30 %: Idling
• 10 to 30 %: Running without
load at 2,500 rpmLoad value
VEHICLE LOADVehicle load:
Min.: 0 %, Max.: 25,700 %Actual vehicle loadLoad percentage in terms of
maximum intake air flow amount
MAFAir flow rate from Mass Air Flow
(MAF) meter:
Min.: 0 g/sec., Max.: 655.35 g/sec.1 to 3 g/sec.: Idling
2 to 6 g/sec.: Running without
load at 2,500 rpmIf value approximately 0.0 g/sec.:
• MAF meter power source
circuit open
• VG circuit open or short
If value 160.0 g/sec. or more:
• E2G circuit open
ENGINE SPDEngine speed:
Min.: 0 rpm, Max.: 16,383.75 rpm650 to 750 rpm: Idling -
VEHICLE SPDVehicle speed:
Min.: 0 km/h, Max.: 255 km/hActual vehicle speed Speed indicated on speedometer
COOLANT TEMPEngine coolant temperature:
Min.: -40
C, Max.: 140C80 to 100C (176 to 212F):
After warming up• If -40
C (-40F): sensor circuit
open
• If 140
C (284F) or more:
sensor circuit shorted
INTAKE AIRIntake air temperature:
Min.: -40
C, Max.: 140CEquivalent to ambient air
temperature• If -40
C (-40F): sensor circuit
open
• If 140
C (284F) or more:
sensor circuit shorted
AIR-FUEL RATIORatio compared to stoichiometric
level:
Min.: 0, Max.: 1.9990.8 to 1.2: Idling• Less than 1 (0 to 0.999) =
Lean
• Stoichiometric air-fuel ratio = 1
• Greater than 1 (1.001 to
1.999) = Rich

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–59
ES
P0100 Mass or Volume Air
Flow Circuit- Open or short in
Mass Air Flow (MAF)
meter circuit
- MAF meter
- ECMComes on DTC storedES-86
P0101 Mass Air Flow Circuit
Range / Performance
Problem- MAF meter
- Air induction system
- PCV hose
connectionsComes on DTC storedES-93
P0102 Mass or Volume Air
Flow Circuit Low
Input- Open or short in
MAF meter circuit
- MAF meter
- ECMComes on DTC storedES-86
P0103 Mass or Volume Air
Flow Circuit High
Input- Open or short in
MAF meter circuit
- MAF meter
- ECMComes on DTC storedES-86
P0110 Intake Air
Temperature Circuit
Malfunction- Open or short in
Intake Air
Temperature (IAT)
sensor circuit
- IAT sensor (built into
MAF meter)
- ECMComes on DTC storedES-96
P0111 Intake Air
Temperature Sensor
Gradient Too High- Mass air flow meter
assemblyComes on DTC storedES-102
P0112 Intake Air
Temperature Circuit
Low Input- Short in IAT sensor
circuit
- IAT sensor (built into
MAF meter)
- ECMComes on DTC storedES-96
P0113 Intake Air
Temperature Circuit
High Input- Open in IAT sensor
circuit
- IAT sensor (built into
MAF meter)
- ECMComes on DTC storedES-96
P0115 Engine Coolant
Temperature Circuit
Malfunction- Open or short in
Engine Coolant
Temperature (ECT)
sensor circuit
- ECT sensor
- ECMComes on DTC storedES-105
P0116 Engine Coolant
Temperature Circuit
Range / Performance
Problem- Thermostat
- ECT sensorComes on DTC storedES-111
P0117 Engine Coolant
Temperature Circuit
Low Input- Short in ECT sensor
circuit
- ECT sensor
- ECMComes on DTC storedES-105
P0118 Engine Coolant
Temperature Circuit
High Input- O p e n i n E C T s e n s o r
circuit
- ECT sensor
- ECMComes on DTC storedES-105
P0120 Throttle Pedal
Position Sensor /
Switch "A" Circuit
Malfunction- Throttle Position
(TP) sensor (built into
throttle body)
- ECMComes on DTC storedES-114
P0121 Throttle / Pedal
Position Sensor /
Switch "A" Circuit
Range / Performance
Problem- TP sensor (built into
throttle body)Comes on DTC storedES-121 DTC No. Detection Item Trouble Areas MIL Memory See page

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–61
ES
P0171 System Too Lean
(Bank 1)- Air induction system
- Injector blockage
- MAF meter
- ECT sensor
- Fuel pressure
- Gas leakage from
exhaust system
- Open or short in A/F
sensor (sensor 1)
circuit
- A/F sensor (sensor
1)
- A/F sensor heater
(sensor 1)
- Integration relay
(EFI MAIN relay)
- A/F sensor heater
and EFI MAIN relay
circuits
- PCV hose
connections
- PCV valve and hose
- ECMComes on DTC storedES-147
P0172 System Too Rich
(Bank 1)- Injector leakage or
blockage
- MAF meter
- ECT sensor
- Ignition system
- Fuel pressure
- Gas leakage from
exhaust system
- Open or short in A/F
sensor (sensor 1)
circuit
- A/F sensor (sensor
1)
- A/F sensor heater
(sensor 1)
- Integration relay
(EFI MAIN relay)
- A/F sensor heater
and EFI MAIN relay
circuits
- ECMComes on DTC storedES-147
P0220 Throttle / Pedal
Position Sensor /
Switch "B" Circuit- TP sensor (built into
throttle body)
- ECMComes on DTC storedES-114
P0222 Throttle / Pedal
Position Sensor /
Switch "B" Circuit
Low Input- TP sensor (built into
throttle body)
- Short in VTA2 circuit
- Open in VC circuit
- ECMComes on DTC storedES-114
P0223 Throttle / Pedal
Position Sensor /
Switch "B" Circuit
High Input- TP sensor (built into
throttle body)
- Open in VTA2 circuit
- Open in E2 circuit
- Short between VC
and VTA2 circuits
- ECMComes on DTC storedES-114 DTC No. Detection Item Trouble Areas MIL Memory See page

ES–622AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
P0300 Random / Multiple
Cylinder Misfire
Detected- Open or short in
engine wire harness
- Connector
connection
- Vacuum hose
connection
- Ignition system
- Injector
- Fuel pressure
- MAF meter
- ECT sensor
- Compression
pressure
- Valve clearance
- Valve timing
- PCV valve and hose
- PCV hose
connections
- Air induction system
- ECMComes on/Blinks* DTC storedES-156
P0301 Cylinder 1 Misfire
Detected- Same as DTC
P0300Comes on/Blinks* DTC storedES-156
P0302 Cylinder 2 Misfire
Detected- Same as DTC
P0300Comes on/Blinks* DTC storedES-156
P0303 Cylinder 3 Misfire
Detected- Same as DTC
P0300Comes on/Blinks* DTC storedES-156
P0304 Cylinder 4 Misfire
Detected- Same as DTC
P0300Comes on/Blinks* DTC storedES-156
P0327 Knock Sensor 1
Circuit Low Input
(Bank 1 or Single
Sensor)- Short in knock
sensor circuit
- Knock sensor
- ECMComes on DTC storedES-168
P0328 Knock Sensor 1
Circuit High Input
(Bank 1 or Single
Sensor)- Open in knock
sensor circuit
- Knock sensor
- ECMComes on DTC storedES-168
P0335 Crankshaft Position
Sensor "A" Circuit- Open or short in
Crankshaft Position
(CKP) sensor circuit
- CKP sensor
- CKP sensor plate
- ECMComes on DTC storedES-172
P0339 Crankshaft Position
Sensor "A" Circuit
Intermittent- Same as DTC
P0335- DTC storedES-172
P0340 Camshaft Position
Sensor "A" Circuit
(Bank 1 or Single
Sensor)- Open or short in
Camshaft Position
(CMP) sensor circuit
- CMP sensor
- Camshaft
- Jumped tooth of
timing chain
- ECMComes on DTC storedES-178
P0351 Ignition Coil "A"
Primary / Secondary
Circuit- Ignition system
- Open or short in
IGF1 or IGT circuit (1
to 4) between ignition
coil with igniter and
ECM
- No. 1 to No. 4
ignition coils with
igniters
- ECMComes on DTC storedES-183 DTC No. Detection Item Trouble Areas MIL Memory See page