2006 TOYOTA RAV4 engine coolant

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–35
ES
THW (B30-79) - ETHW (B30-78) L - BR Engine coolant
temperature sensorIdling, Engine coolant temperature
80
C (176F)0.2 to 1.0 V
VCTA (B30-96) - ETA (B30-97) B - W Power source of throttle
position sensor (specific
voltage)Ignition switch ON 4.5 to 5.5 V
VTA1 (B30-98) - ETA (B30-97) Y - W Throttle 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 (B30-99) - ETA (B30-97) GR - W Throttle 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
VPA (A9-55) - EPA (A9-59) W - Y Accelerator 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 - O Accelerator 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 - Y Power source of
accelerator pedal position
sensor (for VPA)Ignition switch ON 4.5 to 5.5 V
VCP2 (A9-58) - EPA2 (A9-60) L - O Power source of
accelerator pedal position
sensor (for VPA2)Ignition switch ON 4.5 to 5.5 V
HA1A (B30-86) - E04 (B30-23)
HA2A (B30-109) - E04 (B30-23) G - BR
B - BRA/F sensor heater Idling Below 3.0 V
Ignition switch ON 9 to 14 V
A1A+ (B30-93) - E1 (B30-81) W -BR A/F sensor Ignition switch ON 3.3 V*
A1A- (B30-116) - E1 (B30-81) BR - BR A/F sensor Ignition switch ON3.0 V*
A2A+ (B30-120) - E1 (B30-81) L - BR A/F sensor Ignition switch ON 3.3 V*
A2A- (B30-119) - E1 (B30-81) Y - BR A/F sensor Ignition switch ON 3.0 V*
HT1B (B30-48) - E03 (B30-104)
HT2B (B30-47) - E03 (B30-104)LG - BR
Y - BRHeated oxygen sensor
heaterIdling Below 3.0 V
Ignition switch ON 9 to 14 V
OX1B (B30-88) - EX1B (B30-65)
OX2B (B30-87) - EX2B- (B30-64)W - GR
B - B-WHeated oxygen sensor Engine speed maintained at 2,500
rpm for 2 minutes after warming up
sensorPulse generation (see
waveform 2)
#10 (B30-45) - E01 (B30-22)
#20 (B30-85) - E01 (B30-22)
#30 (B30-44) - E01 (B30-22)
#40 (B30-84) - E01 (B30-22)
#50 (B30-43) - E01 (B30-22)
#60 (B30-83) - E01 (B30-22)Y - BR
W - BR
B - BR
BR - BR
L - BR
G - BRInjector Ignition switch ON 9 to 14 V
Idling Pulse generation (see
waveform 3)
KNK1 (B30-95) - EKNK (B30-94)
KNK2 (B30-118) - EKN2 (B30-
11 7 )R - G
B - WKnock sensor Engine speed maintained at 4,000
rpm after warming up enginePulse generation (see
waveform 4)
VCV1 (B30-115) - E1 (B30-81) G-R - BR Power source for VVT
sensor (specific voltage)Ignition switch ON 4.5 to 5.0 V
VCV2 (B30-113) - E1 (B30-81) V - BR Power source for VVT
sensor (specific voltage)Ignition switch ON 4.5 to 5.0 V
VCE1 (B30-114) - E1 (B30-81) GR - BR Power source for VVT
sensor specific voltage)Ignition switch ON 4.5 to 5.0 V
VCE2 (B30-112) - E1 (B30-81) Y - BR Power source for VVT
sensor (specific voltage)Ignition switch ON 4.5 to 5.0 V
VV1+ (B30-69) - VV1- (B30-92) P - L-B Variable valve timing
(VVT) sensor (Intake side
(bank 1))Idling Pulse generation
(see waveform 5) Symbol (Terminal No.) Wiring Color Terminal Description Condition Specified Condition

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–43
ES
3. 2 TRIP DETECTION LOGIC
When a malfunction is first detected, the malfunction is
temporarily stored in the ECM memory (1st trip). If the
same malfunction is detected during the next
subsequent drive cycle, the MIL is illuminated (2nd trip).
4. FREEZE FRAME DATA
Freeze frame data records the engine conditions (fuel
system, calculated engine load, engine coolant
temperature, fuel trim, engine speed, vehicle speed,
etc.) when malfunctions are detected. When
troubleshooting, freeze frame data can help determine if
the vehicle was moving or stationary, if the engine was
warmed up or not, if the air-fuel ratio was lean or rich,
and other data from the time the malfunction occurred.
5. DLC3 (Data Link Connector 3)
NOTICE:
*: Before measuring the resistance, leave the vehicle
as is for at least 1 minute and do not operate the
ignition switch, any other switches or the doors.
If the result is not as specified, the DLC3 may have a
malfunction. Repair or replace the harness and
connector.
HINT:
The DLC3 is the interface prepared for reading various
data from the vehicle's ECM. After connecting the cable
of the intelligent tester to the CAN VIM, turn the ignition
switch ON and turn the tester ON. If a communication
failure message is displayed on the tester screen (on the
tester: UNABLE TO CONNECT TO VEHICLE), a
problem exists in either the vehicle or tester. In order to
identify the location of the problem, connect the tester to
another vehicle.
A082779E83
Symbol (Terminal No.) Terminal Description Condition Specified Condition
SIL (7) - SG (5) Bus "+" line During transmission Pulse generation
CG (4) - Body ground Chassis ground Always Below 1
SG (5) - Body ground Signal ground Always Below 1
BAT (16) - Body ground Battery positive Always 9 to 14 V
CANH (6) - CANL (14) CAN bus line Ignition switch OFF* 54 to 69
CANH (6) - Battery positive HIGH-level CAN bus line Ignition switch OFF* 6 k or higher
CANH (6) - CG (4) HIGH-level CAN bus line Ignition switch OFF* 200
or higher
CANL (14) - Battery positive LOW-level CAN bus line Ignition switch OFF* 6 k
or higher
CANL (14) - CG (4) LOW-level CAN bus line Ignition switch OFF* 200
or higher

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 -

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–47
ES
KNOCK FB VAL Feedback value of knocking -
ACCEL POS #1Absolute Accelerator Pedal Position (APP)
No.1-
ACCEL POS #2 Absolute APP No. 2 -
THROTTLE POS Throttle sensor positioning -
THROTTLE POS Throttle position -
THROTTLE POS #2 Throttle sensor positioning #2 -
THROTTLE MOT Throttle motor -
O2S B1 S2
O2S B2 S2Heated oxygen sensor outputPerforming INJ VOL or A/F CONTROL
function of ACTIVE TEST enables technician
to check output voltage of sensor
AFS B1 S1
AFS B2 S1A/F sensor outputPerforming INJ VOL or A/F CONTROL
function of ACTIVE TEST enables technician
to check output voltage of sensor
TOTAL FT #1
TOTAL FT #2Total fuel trim -
SHORT FT #1
SHORT FT #2Short-term fuel trimShort-term fuel compensation used to
maintain air-fuel ratio at stoichiometric air-fuel
ratio
LONG FT #1
LONG FT #2Long-term fuel trimOverall fuel compensation carried out in long-
term to compensate a continual deviation of
short-term fuel trim from central valve
O2FT B1 S2
O2FT B2 S2Fuel trim at heated oxygen sensor -
AF FT B1 S1
AF FT B2 S1Fuel trim at A/F sensor-
AFS B1 S1
AFS B2 S1A/F sensor current-
CAT TEMP B1S1
CAT TEMP B2S1Estimated catalyst temperature (sensor 1)-
CAT TEMP B1S2
CAT TEMP B2S2Estimated catalyst temperature (sensor 2)-
S O2S B1S2
S O2S B2S2Sub heated oxygen sensor impedance
(sensor 2)-
INI COOL TEMP Engine coolant temperature at engine start -
INI INTAKE TEMP Intake air temperature at engine start -
INJ VOL Injection volume -
STARTER SIG Starter switch (STSW) signal -
PS SW Power steering signal -
PS SIGNAL Power steering signal (history)Signal status usually ON until ignition switch
turned OFF
CTP SW Closed throttle position switch -
A/C SIGNAL A/C signal -
PNP SW (NSW) Park/Neutral Position (PNP) switch signal -
ELECT LOAD SIG Electrical load signal -
STOP LIGHT SW Stop light switch -
BATTERY VOLTAGE Battery voltage -
ATM PRESSURE Atmosphere pressure -
FUEL PMP SP CTL Fuel pump speed control status -
ACIS VSVVSV for Acoustic Control Induction System
(ACIS)-
EVAP (Purge) VSV EVAP Purge VSV -
FUEL PUMP/SPD Fuel pump/speed status -LABEL
(Intelligent Tester Display)Measurement Item Diagnostic Note

2AZ-FE ENGINE MECHANICAL – CYLINDER HEADEM–57
EM
REMOVAL
1. DISCHARGE FUEL SYSTEM PRESSURE (See page
FU-9)
2. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
3. REMOVE RADIATOR SUPPORT OPENING COVER
4. REMOVE FRONT WHEEL RH
5. REMOVE NO. 1 ENGINE UNDER COVER
6. REMOVE FRONT FENDER APRON RH
7. REMOVE NO. 1 ENGINE COVER (See page EM-22)
8. DRAIN ENGINE COOLANT (See page CO-6)
9. DRAIN ENGINE OIL (See page LU-4)
10. REMOVE AIR CLEANER CAP (See page ES-411)
11. REMOVE THROTTLE BODY (See page ES-412)
12. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY
(See page FU-10)
13. REMOVE INTAKE MANIFOLD (See page ES-419)
14. REMOVE INTAKE MANIFOLD INSULATOR (See page
ES-420)
15. REMOVE FRONT EXHAUST PIPE (See page EX-3)
16. REMOVE OIL DIPSTICK
17. REMOVE OIL DIPSTICK GUIDE
(a) Remove the bolt and guide.
(b) Remove the O-ring from the guide.
18. REMOVE MANIFOLD STAY
(a) Remove the bolt, nut and stay.
A112218
A112193

2AZ-FE ENGINE MECHANICAL – CYLINDER HEADEM–59
EM
23. DISCONNECT ENGINE WIRE
(a) Disconnect the radio setting condenser connector.
(b) Disconnect the engine oil pressure switch
connector.
(c) Disconnect the engine coolant temperature sensor
connector.
(d) Disconnect the camshaft position sensor connector.
(e) Remove the bolt and ground cable.
24. REMOVE FRONT SUSPENSION MEMBER
REINFORCEMENT RH (See page EM-6)
25. REMOVE FAN AND GENERATOR V BELT (See page
EM-6)
26. REMOVE GENERATOR ASSEMBLY (See page CH-9)
27. REMOVE ENGINE MOUNTING INSULATOR RH (See
page EM-22)
28. REMOVE IDLER PULLEY (See page EM-23)
29. REMOVE IGNITION COIL ASSEMBLY (See page IG-9)
30. REMOVE SPARK PLUG (See page EM-8)
31. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY
(See page EM-24)
32. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY
(See page EM-26)
33. REMOVE CRANKSHAFT POSITION SENSOR (See
page ES-402)
34. REMOVE OIL PAN SUB-ASSEMBLY (See page EM-
24)
35. SET NO. 1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley until its groove and the
timing mark "0" of the timing chain cover are
aligned.
(b) Check that each timing mark of the camshaft timing
gear and sprocket is aligned with each timing mark
located on the No. 1 and No. 2 bearing caps as
shown in the illustration.
If not, turn the crankshaft by 1 revolution (360
) to
align the timing marks as above.
A098748E01
A098345E09

2AZ-FE ENGINE MECHANICAL – CYLINDER HEADEM–63
EM
49. REMOVE CYLINDER HEAD GASKET
DISASSEMBLY
1. REMOVE RADIO SETTING CONDENSER
(a) Remove the bolt and condenser.
2. REMOVE OIL PRESSURE SWITCH
(a) Using a 24 mm deep socket wrench, remove the
sensor.
3. REMOVE ENGINE COOLANT TEMPERATURE
SENSOR
(a) Using SST, remove the sensor and gasket.
SST 09817-33190
A126929
A112227
A114362
A114367E01

EM–822AZ-FE ENGINE MECHANICAL – CYLINDER HEAD
EM
(b) Align the bearing claw with the claw groove of No. 1
and No. 2 bearing cap, and push in the No. 1
camshaft bearing.
6. INSTALL NO. 2 CAMSHAFT BEARING
(a) Clean the contact surface of the bearing and the
bearing cap.
NOTICE:
Do not apply engine oil to the contact surfaces
of the camshaft bearing and cylinder block.
(b) Install the No. 2 camshaft bearing onto the cylinder
head.
7. INSTALL CAMSHAFT POSITION SENSOR
(a) Install the camshaft position sensor with the bolt.
Torque: 9.0 N*m (92 kgf*cm, 80 in.*lbf)
8. INSTALL ENGINE COOLANT TEMPERATURE
SENSOR
(a) Using SST, install a new gasket and the ECT
sensor.
SST 09817-33190
Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf)
A124773
A013383E01
A114368
A114367E01