engine TOYOTA RAV4 2006 Service Repair Manual

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–25
AC
Temperature Control: No warm air comes out1. Driver side air mix damper control servo motor circuitAC-73
2. Passenger side air mix damper control servo motor circuitAC-67
3. Air conditioning harness -
4. Room temperature sensor circuitAC-43
5. Air conditioning amplifierAC-27
6. Air conditioning control assemblyAC-87
7. ECM (for 2AZ-FE)ES-1
8. ECM (for 2GR-FE)ES-1
9. LIN communication line -
10. CAN communication systemCA-1
Temperature Control: Output air is warmer or cooler
than set temperature or response is slow1. Driver side solar sensor circuitAC-64
2. Passenger side solar sensor circuitAC-53
3. Room temperature sensor circuitAC-43
4. Air inlet damper control servo motor circuitAC-69
5. Heater radiator -
6. Expansion valve -
7. Air conditioning amplifierAC-27
8. Air conditioning control assemblyAC-87
9. ECM (for 2AZ-FE)ES-1
10. ECM (for 2GR-FE)ES-1
11. LIN communication line -
12. CAN communication systemCA-1
Temperature Control: No temperature control (Only
Max. cool or Max. warm)1. Driver side solar sensor circuitAC-64
2. Passenger side solar sensor circuitAC-53
3. Air conditioning amplifierAC-27
4. Air conditioning control assemblyAC-87
5. LIN communication line -
No air inlet control1. Air conditioning control assemblyAC-87
2. Air inlet damper control servo motor circuitAC-69
3. Evaporator temperature sensor circuitAC-50
4. Air conditioning amplifierAC-27
Engine idle up does not occur, or is continuos.1. Compressor circuit (for 2GR-FE)AC-95
2. ECM (for 2AZ-FE)ES-1
3. ECM (for 2GR-FE)ES-1
Diagnostic trouble codes are not recorded. Set mode
is cleared when ignition switch turned to LOCK1. Air conditioning amplifierAC-27
2. Back-up power source circuitAC-100 Symptom Suspected area See page

AC–26AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
TERMINALS OF ECU
(2005/11-2006/01)
1. CHECK AIR CONDITIONING AMPLIFIER
(a) Measure the voltage and resistance of the
connectors.
HINT:
Check from the rear of the connector while it is
connected to the air conditioning amplifier.
E115964E03
Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
B (E37-21) - GND (E37-
14)R - W-B Power source (Back-up) Always 10 to 14 V
SOL+ (E37-2) - GND
(E37-14)GR - W-BA/C compressor operation
signalEngine idling
Pulse generation
(see waveform 1) Blower switch LO
A/C switch ON
BLW (E37-23) - GND
(E37-14)R - W-BBlower motor control
signalIgnition switch ON
Pulse generation
(see waveform 2)
Blower switch LO
PRE (E37-9) - SG-2 (E37-
13)L - GAir conditioning pressure
sensor signalRefrigerant pressure:
Normal0.76 to 4.74 V
PRE (E37-9) - SG-2 (E37-
13)L - GAir conditioning pressure
sensor signalRefrigerant pressure:
Abnormal (less than 0.196
MPa [2.0 kgf/cm
2, 28 psi]) Below 0.76 V
PRE (E37-9) - SG-2 (E37-
13)L - GAir conditioning pressure
sensor signalRefrigerant pressure:
Abnormal (more than 3.14
MPa [32 kgf/cm
2, 455 psi])4.74 V or higher
TSD (E37-33) - S5-4 (E37-
31)L - LGDriver side solar sensor
signalIgnition switch ON
0.8 to 4.3 V
Solar sensor subject to
electric light
TSP (E37-32) - S5-4 (E37-
31)P - LGPassenger side solar
sensor signalIgnition switch ON
0.8 to 4.3 V
Solar sensor subject to
electric light
TR (E37-29) - SG-1 (E37-
34)CR - VRoom temperature sensor
signalIgnition switch ON
1.8 to 2.2 V
Vehicle interior
temperature: 25
C (77F)
SG-1 (E37-34) - Body
groundV - Body groundGround for room
temperature sensorAlways Below 1
GND (E37-14) - Body
groundW-B - Body groundGround for main power
supplyAlways Below 1
IG+ (E37-1) - GND (E37-
14)Y - W-B Power source (IG) Ignition switch ON 10 to 14 V
S5-3 (E37-10) - GND
(E37-14)B - W-BPower supply for pressure
sensorIgnition switch ON 4.5 to 5.5 V
CANH (E37-11) - GND
(E37-14)V - W-B Hi-level CAN bus line Ignition switch ONPulse generation
(see waveform 3)

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–27
AC
(b) Using an oscilloscope, check waveform 1.
Compressor and pulley operation signal
(c) Using an oscilloscope, check waveform 2.
Blower motor control signal
HINT:
When the blower level is increased, the duty ratio
changes accordingly.
(d) Using an oscilloscope, check waveform 3.
CAN communication signal
HINT:
The waveform varies depending on the CAN
communication signal.
CANL (E37-12) - GND
(E37-14)W - W-B Lo-level CAN bus line Ignition switch ONPulse generation
(see waveform 4)
SG-2 (E37-13) - Body
groundG - Body groundGround for pressure
sensorAlways Below 1
RDFG (E37-38) - GND
(E37-14)B - W-BRear defogger switch
signalIgnition switch ON
Rear defogger switch OFF10 to 14 V
RDFG (E37-38) - GND
(E37-14)B - W-BRear defogger switch
signalIgnition switch ON
Rear defogger switch ONBelow 1
LIN1 (E37-37) - GND
(E37-14)B - W-B LIN communication signalIgnition switch ON Pulse generation
BUS G (c1-2) - Body
ground- Ground for BUS IC Always Below 1
BUS (c1-3) - BUS G (c1-2) - BUS IC control signal Ignition switch ON Pulse generation
B BUS (c1-4) - BUS G (c1-
2)- Power supply for BUS IC Ignition switch ON 11 to 13 V
SGA (c1-5) - Body ground -Ground for evaporator
temperature sensorAlways Below 1
TEA (c1-6) - SGA (c1-5) -Evaporator temperature
sensor signalIgnition switch ON
1.4 to 1.8 V
Evaporator temperature:
15
C (59F) Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
E074977E11
Item Content
Symbols (Terminal No.) SOL+ (E37-2) - GND (E37-14)
Tool Setting 5 V/DIV., 500
sec./DIV.
ConditionEngine idling, Blower switch LO, A/C
switch ON
E103396E05
Item Content
Symbols (Terminal No.) BLW (E37-23) - GND (E37-14)
Tool Setting 1 V/DIV., 500
sec./DIV.
Condition Ignition switch ON, Blower switch LO
A086154E10
Item Content
Symbols (Terminal No.) CANH (E37-11) - GND (E37-14)
Tool Setting 1 V/DIV., 10
sec./DIV.
Condition Ignition switch ON

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–29
AC
TERMINALS OF ECU
(2006/01- )
1. CHECK AIR CONDITIONING AMPLIFIER
(a) Measure the voltage and resistance of the
connectors.
HINT:
Check from the rear of the connector while it is
connected to the air conditioning amplifier.
E115964E03
Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
B (E37-21) - GND (E37-
14)R - W-B Power source (Back-up) Always 10 to 14 V
SOL+ (E37-2) - GND
(E37-14)GR - W-BA/C compressor operation
signalEngine idling
Pulse generation
(see waveform 1) Blower switch LO
A/C switch ON
BLW (E37-23) - GND
(E37-14)R - W-BBlower motor control
signalIgnition switch ON
Pulse generation
(see waveform 2)
Blower switch LO
PRE (E37-9) - SG-2 (E37-
13)L - GAir conditioning pressure
sensor signalRefrigerant pressure:
Normal0.76 to 4.74 V
PRE (E37-9) - SG-2 (E37-
13)L - GAir conditioning pressure
sensor signalRefrigerant pressure:
Abnormal (less than 0.196
MPa [2.0 kgf/cm
2, 28 psi]) Below 0.76 V
PRE (E37-9) - SG-2 (E37-
13)L - GAir conditioning pressure
sensor signalRefrigerant pressure:
Abnormal (more than 3.14
MPa [32 kgf/cm
2, 455 psi])4.74 V or higher
TSD (E37-33) - S5-4 (E37-
31)L - LGDriver side solar sensor
signalIgnition switch ON
0.8 to 4.3 V
Solar sensor subject to
electric light
TSP (E37-32) - S5-4 (E37-
31)P - LGPassenger side solar
sensor signalIgnition switch ON
0.8 to 4.3 V
Solar sensor subject to
electric light
TR (E37-29) - SG-1 (E37-
34)CR - VRoom temperature sensor
signalIgnition switch ON
1.8 to 2.2 V
Vehicle interior
temperature: 25
C (77F)
SG-1 (E37-34) - Body
groundV - Body groundGround for room
temperature sensorAlways Below 1
GND (E37-14) - Body
groundW-B - Body groundGround for main power
supplyAlways Below 1
IG+ (E37-1) - GND (E37-
14)Y - W-B Power source (IG) Ignition switch ON 10 to 14 V
S5-3 (E37-10) - GND
(E37-14)B - W-BPower supply for pressure
sensorIgnition switch ON 4.5 to 5.5 V
CANH (E37-11) - GND
(E37-14)V - W-B Hi-level CAN bus line Ignition switch ONPulse generation
(see waveform 3)

AC–30AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
HINT:
*: for 2GR-FE
(b) Using an oscilloscope, check waveform 1.
A/C Compressor* operation signal
HINT:
*: Compressor and pulley for 2AZ-FE, Compressor
and magnetic clutch for 2GR-FE.
(c) Using an oscilloscope, check waveform 2.
Blower motor control signal
HINT:
When the blower level is increased, the duty ratio
changes accordingly.
CANL (E37-12) - GND
(E37-14)W - W-B Lo-level CAN bus line Ignition switch ONPulse generation
(see waveform 4)
SG-2 (E37-13) - Body
groundG - Body groundGround for pressure
sensorAlways Below 1
RDFG (E37-38) - GND
(E37-14)B - W-BRear defogger switch
signalIgnition switch ON
Rear defogger switch OFF10 to 14 V
RDFG (E37-38) - GND
(E37-14)B - W-BRear defogger switch
signalIgnition switch ON
Rear defogger switch ONBelow 1 V
LIN1 (E37-37) - GND
(E37-14)B - W-B LIN communication signal Ignition switch ON Pulse generation
BUS G (c1-2) - Body
ground- Ground for BUS IC Always Below 1
BUS (c1-3) - BUS G (c1-2) - BUS IC control signal Ignition switch ON Pulse generation
B BUS (c1-4) - BUS G (c1-
2)- Power supply for BUS IC Ignition switch ON 11 to 13 V
SGA (c1-5) - Body ground -Ground for evaporator
temperature sensorAlways Below 1
TEA (c1-6) - SGA (c1-5) -Evaporator temperature
sensor signalIgnition switch ON
1.4 to 1.8 V
Evaporator temperature:
15
C (59F)
LOCK (E37-8)* - SG-2
(E37-13)W - GCompressor lock sensor
signalIgnition switch ON
AUTO switch ON
A/C switch ON
Magnetic clutch ONPulse generation
(see waveform 5)
MGC (E37-20)* - GND
(E37-14)V - W-BMagnetic clutch relay
signalIgnition switch ON
Magnetic clutch OFF10 to 14 V
MGC (E37-20)* - GND
(E37-14)V - W-BMagnetic clutch relay
signalIgnition switch ON
Magnetic clutch ONBelow 1.5 V Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
E074977E11
Item Content
Symbols (Terminal No.) SOL+ (E37-2) - GND (E37-14)
Tool Setting 5 V/DIV., 500
sec./DIV.
ConditionEngine idling, Blower switch LO, A/C
switch ON
E103396E05
Item Content
Symbols (Terminal No.) BLW (E37-23) - GND (E37-14)
Tool Setting 1 V/DIV., 500
sec./DIV.
Condition Ignition switch ON, Blower switch LO

AC–218AIR CONDITIONING – COMPRESSOR AND PULLEY (for 2AZ-FE)
AC
3. INSTALL NO. 1 COOLER REFRIGERANT
DISCHARGE HOSE
(a) Remove the attached vinyl tape from the hose.
(b) Sufficiently apply compressor oil to a new O-ring
and the fitting surface of the cooler compressor.
Compressor oil:
ND-OIL 8 or equivalent
(c) Install the O-ring on the cooler refrigerant discharge
hose.
(d) Install the cooler refrigerant discharge hose on the
cooler compressor with the bolt.
Torque: 9.8 N*m (100 kgf*cm, 7 ft.*lbf)
4. INSTALL NO. 1 COOLER REFRIGERANT SUCTION
HOSE
(a) Remove the attached vinyl tape from the hose.
(b) Sufficiently apply compressor oil to a new O-ring
and the fitting surface of the cooler compressor.
Compressor oil:
ND-OIL 8 or equivalent
(c) Install the O-ring on the cooler refrigerant suction
hose.
(d) Install the cooler refrigerant suction hose on the
cooler compressor with the bolt.
Torque: 9.8 N*m (100 kgf*cm, 7 ft.*lbf)
5. INSTALL FAN AND GENERATOR V BELT (See page
EM-7)
6. INSTALL NO. 1 ENGINE UNDER COVER
7. CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL
8. CHARGE REFRIGERANT (See page AC-172)
9. WARM UP ENGINE (See page AC-173)
10. CHECK FOR LEAKAGE OF REFRIGERANT (See
page AC-173)
E131076
E126966

AIR CONDITIONING – COMPRESSOR AND PULLEY (for 2GR-FE)AC–221
AC
INSTALLATION
1. INSTALL COOLER COMPRESSOR ASSEMBLY
(a) Install the cooler compressor with the 4 bolts.
Torque: 24.5 N*m (250 kgf*cm, 18 ft.*lbf)
NOTICE:
Tighten the bolts in the order shown in the
illustration to install the cooler compressor.
(b) Connect the connector.
2. CONNECT NO. 1 COOLER REFRIGERANT
DISCHARGE HOSE
(a) Remove the attached vinyl tape from the hose.
(b) Sufficiently apply compressor oil to a new O-ring
and the fitting surface of the cooler compressor.
Compressor oil:
ND-OIL 8 or equivalent
(c) Install the O-ring to the cooler refrigerant discharge
hose.
(d) Connect the cooler refrigerant discharge hose to the
cooler compressor with the bolt.
Torque: 9.8 N*m (100 kgf*cm, 7 ft.*lbf)
3. CONNECT NO. 1 COOLER REFRIGERANT SUCTION
HOSE
(a) Remove the attached vinyl tape from the hose.
(b) Sufficiently apply compressor oil to a new O-ring
and the fitting surface of the cooler compressor.
Compressor oil:
ND-OIL 8 or equivalent
(c) Install the O-ring to the cooler refrigerant suction
hose.
(d) Connect the cooler refrigerant suction hose to the
cooler compressor with the bolt.
Torque: 9.8 N*m (100 kgf*cm, 7 ft.*lbf)
4. INSTALL FAN AND GENERATOR V BELT (See page
EM-8)
5. CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL
6. CHARGE REFRIGERANT (See page AC-172)
7. WARM UP ENGINE (See page AC-173)
8. CHECK FOR LEAKAGE OF REFRIGERANT (See
page AC-173)
H102369E01
H102036
H102039

AC–228AIR CONDITIONING – CONDENSER
AC
4. INSTALL RADIATOR SUPPORT UPPER BRACKET
(a) Install the 2 brackets with the 2 bolts.
Torque: 45 N*m (459 kgf*cm, 33 ft.*lbf)
5. INSTALL COOLER REFRIGERANT LIQUID PIPE
(a) Remove the attached vinyl tape from the pipe and
the connecting part of the cooler condenser.
(b) Sufficiently apply compressor oil to a new O-ring
and the fitting surface of the pipe joint.
Compressor oil:
ND-OIL 8 or equivalent
(c) Install the O-ring on the cooler refrigerant liquid
pipe.
(d) Install the cooler refrigerant liquid pipe on the cooler
condenser with the bolt.
Torque: 9.8 N*m (100 kgf*cm, 7 ft.*lbf)
6. INSTALL NO. 1 COOLER REFRIGERANT
DISCHARGE HOSE
(a) Remove the attached vinyl tape from the hose and
the connecting part of the cooler condenser.
(b) Sufficiently apply compressor oil to a new O-ring
and the fitting surface of the hose joint.
Compressor oil:
ND-OIL 8 or equivalent
(c) Install the O-ring on the cooler refrigerant discharge
hose.
(d) Install the cooler refrigerant discharge hose on the
cooler condenser with the bolt.
Torque: 9.8 N*m (100 kgf*cm, 7 ft.*lbf)
7. ADJUST HOOD SUB-ASSEMBLY (See page ED-5)
8. INSTALL FRONT BUMPER COVER
(a) Install the front bumper cover (see page ET-10).
9. CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL
10. CHARGE REFRIGERANT (See page AC-172)
11. WARM UP ENGINE (See page AC-173)
12. CHECK FOR LEAKAGE OF REFRIGERANT (See
page AC-173)
E126555
H102043
H102042

RS–60SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
DESCRIPTION
The front airbag sensor RH consists of the diagnostic circuit and the frontal deceleration sensor.
If the center airbag sensor receives signals from the frontal deceleration sensor, it determines whether or
not the SRS should be activated.
DTC B1602/83, B1603/83, B1612/83 or B1613/83 is recorded when a malfunction is detected in the front
airbag sensor RH circuit.
DTC B1602/83Lost Communication with Front Satellite Sen-
sor Bus RH
DTC B1603/83Front Satellite Sensor Bus RH Initialization
Incomplete
DTC B1612/83Lost Communication with Front Airbag Sensor
RH
DTC B1613/83Front Airbag Sensor RH Initialization Incom-
plete
DTC No. DTC Detection Condition Trouble Area
B1602/83
B1603/83
B1612/83
B1613/83When one of following conditions is met:
• Center airbag sensor detects line short
signal, open signal, short to ground signal
or short to B+ signal in the front airbag
sensor RH circuit for 2 seconds.
• Front airbag sensor RH malfunction
• Center airbag sensor malfunction• Instrument panel wire
• Engine room main wire
• Front airbag sensor RH
• Center airbag sensor

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–67
RS
(a) Disconnect the service wire from connector E.
(b) Disconnect the engine room main wire connector from
the instrument panel wire.
(c) Using a service wire, connect AE9-2 (+SR) and AE9-1 (-
SR) of connector D.
NOTICE:
Do not forcibly insert a service wire into the
terminals of the connector when connecting.
(d) Measure the resistance of the wire harness side
connector.
Standard resistance
NG
OK
7CHECK ENGINE ROOM MAIN WIRE (OPEN)
C128665E01
Tester Connection Specified Condition
A29-2 (+SR) - A29-1 (-SR) Below 1
REPAIR OR REPLACE ENGINE ROOM MAIN
WIRE
REPAIR OR REPLACE INSTRUMENT PANEL WIRE