2006 TOYOTA RAV4 sensor

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–29
ES
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms are
listed in order of probability in the "Suspected area" column of
the table. Check each symptom by checking the suspected
areas in the order they are listed. Replace parts as
necessary.
SFI system
Symptom Suspected area See page
Engine does not crank (Does not start)1. BatteryCH-4
2. StarterST-8
3. Starter relayST-16
4. Park/neutral position switchAX-108
5. Immobiliser systemEI-3
No initial combustion (Does not start)1. ECM power source circuitES-366
2. Crankshaft position sensorES-402
3. Camshaft position sensorES-399
4. Ignition systemIG-4
5. Fuel pump control circuitES-378
6. ECMES-26
7. VC output circuitES-373
Engine cranks normally but difficult to start1. Fuel pump control circuitES-378
2. CompressionEM-3
Difficult to start with cold engine1. Ignition systemIG-4
2. Spark plugIG-7
3. Fuel pump control circuitES-378
4. InjectorFU-11
Difficult to start with warm engine1. InjectorFU-11
2. Ignition systemIG-4
3. Spark plugIG-7
4. Fuel pump control circuitES-378
High engine idle speed1. Electronic throttle control systemES-265
2. A/C signal circuit -
3. ECM power source circuitES-366
Low engine idle speed (Poor idling)1. Electronic throttle control systemES-265
2. A/C signal circuit -
3. Fuel pump control circuitES-378
4. Air induction systemEC-7
5. PCV hoseEC-7
Rough idling1. CompressionEM-3
2. Spark plugIG-7
3. InjectorFU-11
4. Ignition systemIG-4
5. Fuel pump control circuitES-378
6. Electronic throttle control systemES-265
7. Air induction systemEC-7
8. PCV hoseEC-7
9. Mass air flow meterES-391

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–31
ES
TERMINALS OF ECM
HINT:
The standard normal voltage between each pair of ECM
terminals is shown in the table below. The appropriate
conditions for checking each pair of terminals are also
indicated. The result of checks should be compared with the
standard normal voltage for that pair of terminals, displayed in
the Specified Condition column. The illustration above can be
used as a reference to identify the ECM terminal locations.
A107881E05
Symbols (Terminal No.) Wiring Colors Terminal Descriptions ConditionsSpecified
Conditions
BATT (A9-20) - E1 (B30-104) W - BRBattery (for measuring
battery voltage and for
ECM memory)Always 9 to 14 V
+BM (A9-3) - E1 (B30-104) LG - BRPower source of throttle
actuatorAlways 9 to 14 V
IGSW (A9-28) - E1 (B30-104) B - BR Ignition switch Ignition switch ON 9 to 14 V
+B (A9-2) - E1 (B30-104) B - BR Power source of ECM Ignition switch ON 9 to 14 V
+B2 (A9-1) - E1 (B30-104) B - BR Power source of ECM Ignition switch ON 9 to 14 V
OC1+ (B30-100) - OC1- (B30-
123)BR - LCamshaft timing oil control
valve (OCV)IdlingPulse generation (see
waveform 1)
MREL (A9-44) - E1 (B30-104) O - BR EFI relay Ignition switch ON 9 to 14 V
VG (B30-118) - E2G (B30-116) R - LG Mass air flow meterIdling, Shift lever position P or N, A/
C switch OFF0.5 to 3.0 V
THA (B30-65) - ETHA (B30-88) W - BRIntake air temperature
sensorIdling, Intake air temperature 20
C
(68
F)0.5 to 3.4 V
THW (B30-97) - ETHW (B30-96) GR - BREngine coolant
temperature sensorIdling, Engine coolant temperature
80
C (176F)0.2 to 1.0 V
VCTA (B30-67) - ETA (B30-91) Y - BRPower source of throttle
position sensor (specific
voltage)Ignition switch ON 4.5 to 5.5 V
VTA1 (B30-115) - ETA (B30-91) G - BRThrottle position sensor
(for engine control)Ignition switch ON,
Throttle valve fully closed0.5 to 1.1 V
Ignition switch ON,
Throttle valve fully open3.3 to 4.9 V
VTA2 (B30-114) - ETA (B30-91) L - BRThrottle position sensor
(for sensor malfunction
detection)Ignition switch ON,
Throttle valve fully closed2.1 to 3.1 V
Ignition switch ON,
Throttle valve fully open4.6 to 5.0 V

ES–322AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
VPA (A9-55) - EPA (A9-59) W - YAccelerator pedal position
sensor (for engine control)Ignition switch ON,
Accelerator pedal released0.5 to 1.1 V
Ignition switch ON,
Accelerator pedal fully depressed2.6 to 4.5 V
VPA2 (A9-56) - EPA2 (A9-60) R - OAccelerator pedal position
sensor (for sensor
malfunctioning detection)Ignition switch ON,
Accelerator pedal released1.2 to 2.0 V
Ignition switch ON,
Accelerator pedal fully depressed3.4 to 5.0 V
VCPA (A9-57) - EPA (A9-59) B - YPower source of
accelerator pedal position
sensor (for VPA)Ignition switch ON 4.5 to 5.5 V
VCP2 (A9-58) - EPA2 (A9-60) L - OPower source of
accelerator pedal position
sensor (for VPA2)Ignition switch ON 4.5 to 5.5 V
HA1A (B30-109) - E04 (B30-46) L - W-B A/F sensor heaterIdling Below 3.0 V
Ignition switch ON 9 to 14 V
A1A+ (B30-112) - E1 (B30-104) B -BR A/F sensor Ignition switch ON 3.3 V*
A1A- (B30-113) - E1 (B30-104) R - BR A/F sensor Ignition switch ON3.0 V*
HT1B (B30-47) - E03 (B30-86) R - W-BHeated oxygen sensor
heaterIdling Below 3.0 V
Ignition switch ON 9 to 14 V
OX1B (B30-64) - EX1B (B30-87) B - BR Heated oxygen sensorEngine speed maintained at 2,500
rpm for 2 minutes after warming up
sensorPulse generation (see
waveform 2)
#10 (B30-108) - E01 (B30-45)
#20 (B30-107) - E01 (B30-45)
#30 (B30-106) - E01 (B30-45)
#40 (B30-105) - E01 (B30-45)L - W-B
G - W-B
B - W-B
W - W-BInjectorIgnition switch ON 9 to 14 V
IdlingPulse generation (see
waveform 3)
KNK1 (B30-110) - EKNK (B30-
111 )B - W Knock sensorEngine speed maintained at 4,000
after warming up enginePulse generation (see
waveform 4)
G2+ (B30-99) - G2- (B30-98) L - Y Camshaft position sensor IdlingPulse generation (see
waveform 5)
NE+ (B30-122) - NE- (B30-121) W - B Crankshaft position sensor IdlingPulse generation (see
waveform 5)
IGT1 (B30-85) - E1 (B30-104)
IGT2 (B30-84) - E1 (B30-104)
IGT3 (B30-83) - E1 (B30-104)
IGT4 (B30-82) - E1 (B30-104)R - BR
P - BR
G - BR
L - BRIgnition coil (ignition
signal)IdlingPulse generation (see
waveform 6)
IGF1 (B30-81) - E1 (B30-104) W - BRIgnition coil (ignition
confirmation signal)Ignition switch ON 4.5 to 5.5 V
IdlingPulse generation (see
waveform 6)
PRG (B30-49) - E1 (B30-104) G - BR Purge VSVIgnition switch ON 9 to 14 V
IdlingPulse generation (see
waveform 7)
SPD (A9-8) - E1 (B30-104) V - BRSpeed signal from
combination meterDriving at 20 km/h (12 mph)Pulse generation (see
waveform 8)
STA (A9-48) - E1 (B30-104) LG - BR Starter signal Cranking 5.5 V or
more
STAR (B30-52) - E1 (B30-104) W - BR Starter relay controlIgnition switch ON Below 1.5 V
Cranking 6.0 V or more
STP (A9-36) - E1 (B30-104) L - BR Stop light switchBrake pedal depressed 7.5 to 14 V
Brake pedal released Below 1.5 V
ST1- (A9-35) - E1 (B30-104) GR - BRStop light switch
(opposite to STP terminal)Ignition switch ON,
Brake pedal depressedBelow 1.5 V
Ignition switch ON,
Brake pedal released7.5 to 14 V
M+ (B30-42) - ME01 (B30-43) B - W-B Throttle actuator Idling with warm enginePulse generation (see
waveform 9) Symbols (Terminal No.) Wiring Colors Terminal Descriptions ConditionsSpecified
Conditions

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–33
ES
HINT:
*: The ECM terminal voltage is constant regardless of the
output voltage from the sensor.
M- (B30-41) - ME01 (B30-43) W - W-B Throttle actuator Idling with warm enginePulse generation (see
waveform 10)
FC (A9-7) - E1 (B30-104) W - BR Fuel pump controlIgnition switch ON 9 to 14 V
Idling Below 1.5 V
W (A9-24) - E1 (B30-104) R - BR MILIgnition switch ON Below 1.5 V
Idling 9 to 14 V
TC (A9-27) - E1 (B30-104) G - BR Terminal TC of DLC3 Ignition switch ON 9 to 14 V
TACH (A9-15) - E1 (B30-104) GR - BR Engine speed IdlingPulse generation (see
waveform 11)
VPMP (A9-42) - E1 (B30-104) W - BRVent valve (built into
canister pump module)Ignition switch ON 9 to 14 V
MPMP (A9-34) - E1 (B30-104) B - BRLeak detection pump (built
into canister pump
module)Leak detection pump OFF Below 3 V
Leak detection pump ON 9 to 14 V
VCPP (B30-70) - EPPM (B30-94) Y - BRPower source for canister
pressure sensor (specific
voltage)Ignition switch ON 4.5 to 5.5 V
PPMP (B30-71) - EPPM (B30-94) V - BRCanister pressure sensor
(built into canister pump
module)Ignition switch ON 3 to 3.6 V
ELS1 (A9-31) - E1 (B30-104) O - BR Electric loadTaillight switch ON 7.5 to 14 V
Taillight switch OFF Below 1.5 V
ELS3 (A9-33) - E1 (B30-104) G - BR Electric loadDefogger switch ON 7.5 to 14 V
Defogger switch OFF Below 1.5 V
FANL (A9-21) - E1 (B30-104) R - BR Fan No. 1 relayIgnition switch ON 9 to 14 V
Idling with A/C ON, or high engine
coolant temperatureBelow 1.5 V
FANH (A9-22) - E1 (B30-104) W - BR Fan No. 2 relayIdling with high engine coolant
temperatureBelow 1.5 V
ALT (B30-50) - E1 (B30-104) B - BR Generator Ignition switch ON 9 to 14 V
CANH (A9-41) - E1 (B30-104) Y - BR CAN communication line Ignition switch ONPulse generation (see
waveform 12)
CANL (A9-49) - E1 (B30-104) W - BR CAN communication line Ignition switch ONPulse generation (see
waveform 13)
VCIB (B30-69) - EIB (B30-92) R - BR Battery current sensor Ignition switch ON 4.5 to 5.5 V
IB (B30-68) - EIB (B30-92) B - BR Battery current sensor Ignition switch ON 0.5 to 2.5 V
THB (B30-120) - EIB (B30-92) LG - BRBattery temperature
sensorIgnition switch ON, Battery
temperature -30 to 80
C (-22 to
176
F)0.5 to 4.5 V
RLO (B30-51) - E1 (B30-104) GR - BR GeneratorAfter engine warmed up, during
charging control, vehicle driven at
constant speedPulse generation (see
waveform 14)
RLO (B30-51) - E1 (B30-104) GR - BR GeneratorAfter engine warmed up, during
charging control, vehicle
acceleratedPulse generation (see
waveform 15)
RLO (B30-51) - E1 (B30-104) GR - BR GeneratorAfter engine warmed up, during
charging control, vehicle
deceleratedPulse generation (see
waveform 16) Symbols (Terminal No.) Wiring Colors Terminal Descriptions ConditionsSpecified
Conditions

ES–342AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
1. WAVEFORM 1
Camshaft timing oil control valve (OCV)
2. WAVEFORM 2
Heated oxygen sensor
HINT:
In DATA LIST, item O2S B1 S2 shows the ECM input
values from the heated oxygen sensor.
3. WAVEFORM 3
Injector No. 1 (to No. 4) injection signal
HINT:
The wavelength becomes shorter as the engine rpm
increases.
4. WAVEFORM 4
Knock sensor
HINT:
• The wavelength becomes shorter as the engine rpm
increases.
• The waveforms and amplitudes displayed differ
slightly depending on the vehicle.
A093229E02
ECM Terminal Names Between OC1+ and OC1-
Tester Ranges 5 V/DIV., 1 msec./DIV.
Conditions Idling
A088863E05
ECM Terminal Names Between OX1B and EX1B
Tester Ranges 0.2 V/DIV., 200 msec./DIV.
Conditions Engine speed maintained at 2,500 rpm
for 2 minutes after warming up sensor
A093279E04
ECM Terminal Names Between #10 (to #40) and E01
Tester Ranges 20 V/DIV., 20 msec./DIV.
Conditions Idling
A085286E03
ECM Terminal Names Between KNK1 and EKNK
Tester Ranges 1 V/DIV., 1 msec./DIV.
Conditions Engine speed maintained at 4,000 rpm
after warming up engine

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–35
ES
5. WAVEFORM 5
Crankshaft position sensor and Camshaft position
sensor
HINT:
The wavelength becomes shorter as the engine rpm
increases.
6. WAVEFORM 6
Igniter IGT signal (from ECM to igniter) and Igniter
IGF signal (from igniter to ECM)
HINT:
The wavelength becomes shorter as the engine rpm
increases.
7. WAVEFORM 7
Purge VSV
HINT:
If the waveform is not similar to the illustration, check the
waveform again after idling for 10 minutes or more.
8. WAVEFORM 8
Vehicle speed signal
HINT:
The wavelength becomes shorter as the vehicle speed
increases.
9. WAVEFORM 9
Throttle actuator positive terminal
HINT:
The duty ratio varies depending on the throttle actuator
operation.
A063955E07
ECM Terminal Names CH1: Between G2+ and G2-
CH2: Between NE+ and NE-
Tester Ranges 5 V/DIV., 20 msec./DIV.
Conditions Idling
A093278E12
ECM Terminal Names Between IGT (1 to 4) and E1
Between IGF1 and E1
Tester Ranges 2 V/DIV., 20 msec./DIV.
Conditions Idling
A093230E01
ECM Terminal Names Between PRG and E1
Tester Ranges 5 V/DIV., 50 msec./DIV.
Conditions Idling
A093224E01
ECM Terminal Names Between SPD and E1
Tester Ranges 2 V/DIV., 20 msec./DIV.
Conditions Driving at 20 km/h (12 mph)
A093274E03
ECM Terminal Names Between M+ and ME01
Tester Ranges 5 V/DIV., 1 msec./DIV.
Conditions Idling with warm engine

ES–382AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DIAGNOSIS SYSTEM
1. DESCRIPTION
When troubleshooting OBD II (On-Board Diagnostics)
vehicles, the intelligent tester (complying with SAE
J1987) must be connected to the DLC3 (Data Link
Connector 3) of the vehicle. Various data in the vehicle's
ECM (Engine Control Module) can be then read.
OBD II regulations require that the vehicle's on-board
computer illuminate the MIL (Malfunction Indicator
Lamp) on the instrument panel when the computer
detects a malfunction in:
(a) The emission control system components.
(b) The powertrain control components (which affect
vehicle emissions).
(c) The computer itself.
In addition, if the applicable DTCs (Diagnostic Trouble
Codes) prescribed by SAE J2012 are not recorded on 3
consecutive trips, the MIL turns off automatically but the
DTCs remain recorded in the ECM memory.
To check DTCs, connect the intelligent tester to the
DLC3. The tester displays DTCs, freeze frame data, and
a variety of the engine data. The DTCs and freeze frame
data can be erased with the tester (see page ES-35).
In order to enhance OBD function on vehicles and
develop the Off-Board diagnosis system, CAN
(Controller Area Network) communication is introduced
in this system. It minimizes the gap between technician
skills and vehicle technology. CAN is a network, which
uses a pair of data transmission lines, spanning multiple
computers and sensors. It allows high speed
communication between the systems and simplifies the
wire harness connection.
Since this system is equipped with the CAN
communication, connecting the CAN VIM (Vehicle
Interface Module) to the intelligent tester is necessary to
display any information from the ECM. (Also the
communication between the intelligent tester and the
ECM uses CAN communication signals.) When
confirming the DTCs and any data of the ECM, connect
the CAN VIM between the DLC3 and the intelligent
tester.
2. NORMAL MODE AND CHECK MODE
The diagnosis system operates in normal mode during
normal vehicle use. In normal mode, 2 trip detection
logic is used to ensure accurate detection of
malfunctions. Check mode is also available as an option
for technicians. In check mode, 1 trip detection logic is
used for simulating malfunction symptoms and
increasing the system's ability to detect malfunctions,
including intermittent problems (intelligent tester only)
(see page ES-38).
FI00534
B127989E01

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 -