heater TOYOTA RAV4 2006 Service Service Manual

SEAT BELT – SEAT BELT WARNING SYSTEMSB–17
SB
DESCRIPTION
When the ignition switch is ON, the center airbag sensor transmits front seat inner belt status signals to
the combination meter through the CAN bus line. If the front passenger seat belt is not fastened, the
heater control panel (automatic A/C) or clock (manual A/C) blinks the front passenger seat belt warning
light. If the seat belt is fastened, the warning light goes off.
NOTICE:
The seat belt warning system uses the CAN bus line. Before troubleshooting the seat belt warning
system, perform "COMMUNICATION FUNCTION CHECK" by following "HOW TO PROCEED WITH
TROUBLESHOOTING" to confirm that the communication systems are normal.
Front Passenger Side Seat Belt Warning Light Malfunction

SEAT BELT – SEAT BELT WARNING SYSTEMSB–19
SB
INSPECTION PROCEDURE
(a) Select the Active Test, use the intelligent tester to
generate a control command, and then check that the
seat belt warning light operates.
Center airbag sensor:
OK:
Passenger side seat belt warning light operates
normally.
OK
NG
(a) Check system.
B
A
(a) Disconnect the E23 panel connector.
(b) Measure the voltage and resistance of the wire harness
side connector.
Standard voltage
Standard resistance
NG
1PERFORM ACTIVE TEST BY INTELLIGENT TESTER
Item Test Details Diagnostic Note
P-BELT REMIND P-SEAT BELT warning light
(OFF/ON)Confirm that the vehicle is stopped, engine
idling
REPLACE CENTER AIRBAG SENSOR
ASSEMBLY
2CHECK A/C TYPE
A/C type Proceed to
for Automatic air conditioning system A
for Manual air conditioning system B
Go to step 6
3CHECK HEATER CONTROL PANEL (POWER SOURCE CIRCUIT)
B130079E01
Tester Connection Condition Specified Condition
E23-1 (+B) - Body
groundAlways 10 to 14 V
E23-2 (IG+) - Body
groundIgnition switch ON 10 to 14 V
E23-3 (ACC) - Body
groundIgnition switch ON
(ACC)10 to 14 V
Tester Connection Specified Condition
E23-7 (GND) - Body ground Below 1
REPAIR OR REPLACE HARNESS AND
CONNECTOR

SB–20SEAT BELT – SEAT BELT WARNING SYSTEM
SB
OK
(a) Disconnect the E23 panel connector.
(b) Disconnect the E19 meter connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance
NG
OK
(a) Remove the heater control panel.
4CHECK WIRE HARNESS (HEATER CONTROL PANEL - COMBINATION METER
ASSEMBLY)
B130080E01
Tester Connection Specified Condition
E19-1 (PBLT) - E23-4 (PBEW) Below 1
REPAIR OR REPLACE HARNESS AND
CONNECTOR
5INSPECT HEATER CONTROL PANEL

SEAT BELT – SEAT BELT WARNING SYSTEMSB–21
SB
(b) Apply battery voltage and check that the front passenger
side seat belt warning light illuminates.
OK
HINT:
When the battery's negative (-) lead is applied to terminal
4 and the positive (+) lead is applied to terminal 7, the
seat belt warning light does not illuminate.
NG
OK
(a) Disconnect the E22 clock connector.
(b) Measure the voltage and resistance of the wire harness
side connector.
Standard voltage
Standard resistance
NG
OK
(a) Disconnect the E22 clock connector.
B131601E01
Measurement Condition Specified Condition
Battery positive (+) - Terminal 4
Battery negative (-) - Terminal 7Front passenger side seat belt
warning light illuminates
REPLACE HEATER CONTROL PANEL
REPLACE COMBINATION METER ASSEMBLY
6CHECK CLOCK SUB-ASSEMBLY (POWER SOURCE CIRCUIT)
B130078E02
Tester Connection Condition Specified Condition
E22-1 (+B) - Body
groundAlways 10 to 14 V
B22-6 (ACC) - Body
groundIgnition switch ACC 10 to 14 V
E22-2 (IG+) - Body
groundIgnition switch ON 10 to 14 V
Tester Connection Specified Condition
E22-5 - Body ground Below 1
REPAIR OR REPLACE HARNESS AND
CONNECTOR
7CHECK WIRE HARNESS (CLOCK - COMBINATION METER)

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEMEI–13
EI
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.
• Inspect the fuses and relays related to this system before
inspecting the suspected areas below.
Engine immobiliser system:
HINT:
*1: for Manual air conditioning system
*2: for Automatic air conditioning system
Symptom Suspected area See page
Engine does not start1. ECU power source circuitEI-41
2. SFI systemES-24
Security indicator light malfunction1. Clock sub-assembly*1EI-38
2. Heater control panel*2EI-38
3. Transponder key ECUEI-38

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–53
ES
SPD TESTCheck mode result for vehicle
speed sensor:
COMPL or INCMPL--
MISFIRE TESTCheck mode result for misfire
monitor:
COMPL or INCMPL--
OXS1 TESTCheck mode result for HO2
sensor:
COMPL or INCMPL--
A/F SSR TEST B1Check mode result for air-fuel
ratio sensor:
COMPL or INCMPL--
MIL MIL status:
ON or OFFON: MIL ON -
MIL ON RUN DISTMIL ON run distance:
Min.: 0 km, Max.: 65,535 kmDistance after DTC detected -
MIL ON RUN TIMERunning time from MIL ON:
Min.: 0 minutes,
Max.: 65,535 minutesEquivalent to running time after
MIL ON-
ENG RUN TIMEEngine run time:
Min.: 0 seconds,
Max.: 65,535 secondsTime after engine start -
TIME DTC CLEARTime after DTC cleared:
Min.: 0 minutes,
Max.: 65,535 minutesEquivalent to time after DTCs
erased-
DIST DTC CLEARDistance after DTC cleared:
Min.: 0 km, Max.: 65,535 kmEquivalent to drive distance
after DTCs erased-
WU CYC DTC CLEARWarm-up cycle after DTC cleared:
Min.: 0, Max.: 255-Number of warm-up cycles after
DTC cleared
OBD CERT OBD requirement OBD2 -
#CARB CODES Emission related DTCs - Number of emission related DTCs
COMP MONComprehensive component
monitor:
N O T AV L o r AVA I L--
FUEL MONFuel system monitor:
N O T AV L o r AVA I L--
MISFIRE MONMisfire monitor:
N O T AV L o r AVA I L--
O2S (A/FS) HTRO2S (A/FS ) heater monitor:
N O T AV L o r AVA I L--
O2S (A/FS) HTRO2S (A/FS ) heater monitor:
COMPL or INCMPL--
O2S (A/FS) MONO2S (A/FS ) monitor:
N O T AV L o r AVA I L--
O2S (A/FS) MONO2S (A/FS ) monitor:
COMPL or INCMPL--
EVAP MONEVAP monitor:
N O T AV L o r AVA I L--
EVAP MONEVAP monitor:
COMPL or INCMPL--
CAT MONCatalyst monitor:
N O T AV L o r AVA I L--
CAT MONCatalyst monitor:
COMPL or INCMPL--
CCM ENAComprehensive component
monitor:
UNABLE or ENABLE-- Intelligent Tester Display Measurement: Range (Display) Normal Condition*1 Diagnostic Note

ES–542AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HINT:
• *1: If no idling conditions are specified, the transmission
gear selector lever should be in the N or P position, and
the A/C switch and all accessory switches should be OFF.
• *2: DATA LIST values are only displayed when performing
the following ACTIVE TEST: VVT B1. For other ACTIVE
TESTs, the DATA LIST value will be 0.
2. ACTIVE TEST
HINT:
Performing an ACTIVE TEST enables components
including the relays, VSV (Vacuum Switching Valve) and
actuators, to be operated without removing any parts.
The ACTIVE TEST can be performed with the intelligent
tester. Performing the ACTIVE TEST as the first step of
troubleshooting is one method of shortening diagnostic
time.
DATA LIST can be displayed during ACTIVE TEST.
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch ON.
CCM CMPLComprehensive component
monitor:
COMPL or INCMPL--
FUEL ENAFuel system monitor:
UNABLE or ENABLE--
FUEL CMPLFuel system monitor:
COMPL or INCMPL--
MISFIRE ENAMisfire monitor:
UNABLE or ENABLE--
MISFIRE CMPLMisfire monitor:
COMPL or INCMPL--
HTR ENAO2S (A/FS) heater monitor:
UNABLE or ENABLE--
HTR CMPLO2S (A/FS) heater monitor:
COMPL or INCMPL--
O2S (A/FS) ENAO2S (A/FS) monitor:
UNABLE or ENABLE--
O2S (A/FS) CMPLO2S (A/FS) monitor:
COMPL or INCMPL--
EVAP ENAEVAP monitor:
UNABLE or ENABLE--
EVAP CMPLEVAP monitor:
COMPL or INCMPL--
CAT ENACatalyst monitor:
UNABLE or ENABLE--
CAT CMPLCatalyst monitor:
COMPL or INCMPL--
MODEL CODE Identifying model code ACA3# -
ENGINE TYPE Identifying engine type 2AZFE -
CYLINDER NUMBERIdentifying cylinder number:
Min.: 0, Max.: 2554-
TRANSMISSION Identifying transmission type 4AT -
DESTINATION Identifying destination A (America) -
MODEL YEARIdentifying model year:
Min.: 1900, Max.: 2155200# -
SYSTEM Identifying engine system GASLIN (gasoline engine) -Intelligent Tester Display Measurement: Range (Display) Normal Condition*1 Diagnostic Note

ES–582AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may be different than your
readings depending on the type of instrument and other
factors.
If any DTCs are displayed during a check mode DTC check,
check the circuit for the DTCs listed in the table below. For
details of each DTC, refer to the page indicated.
DTC No. Detection Item Trouble Areas MIL Memory See page
P0010 Camshaft Position
"A" Actuator Circuit
(Bank 1)- Open or short in Oil
Control Valve (OCV)
circuit
- OCV
- ECMComes on DTC storedES-62
P0011 Camshaft Position
"A" - Timing Over-
Advanced or System
Performance (Bank
1)- Valve timing
- OCV
- OCV filter
- Camshaft timing
gear assembly
- ECMComes on DTC storedES-66
P0012 Camshaft Position
"A" - Timing Over-
Retarded (Bank 1)- Same as DTC
P0011Comes on DTC storedES-66
P0016 Crankshaft Position -
Camshaft Position
Correlation (Bank 1
Sensor A)- Mechanical system
(Timing chain has
jumped tooth or chain
stretched)
- ECMComes on DTC storedES-72
P0031 Oxygen (A/F) Sensor
Heater Control Circuit
Low (Bank 1 Sensor
1)- Open in Air-Fuel
Ratio (A/F) sensor
heater circuit
- A/F sensor heater
(sensor 1)
- Integration relay
(EFI MAIN relay)
- ECMComes on DTC storedES-74
P0032 Oxygen (A/F) Sensor
Heater Control Circuit
High (Bank 1 Sensor
1)- Short in A/F sensor
heater circuit
- A/F sensor heater
(sensor 1)
- Integration relay
(EFI MAIN relay)
- ECMComes on DTC storedES-74
P0037 Oxygen Sensor
Heater Control Circuit
Low (Bank 1 Sensor
2)- Open in Heated
Oxygen (HO2)
sensor heater circuit
- HO2 sensor heater
(sensor 2)
- Integration relay
(EFI MAIN relay)
- ECMComes on DTC storedES-80
P0038 Oxygen Sensor
Heater Control Circuit
High (Bank 1 Sensor
2)- Short in HO2 sensor
heater circuit
- HO2 sensor heater
(sensor 2)
- Integration relay
(EFI MAIN relay)
- ECMComes on DTC storedES-80

ES–602AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
P0122 Throttle / Pedal
Position Sensor /
Switch "A" Circuit
Low Input- TP sensor (built into
throttle body)
- Short in VTA1 circuit
- Open in VC circuit
- ECMComes on DTC storedES-114
P0123 Throttle / Pedal
Position Sensor /
Switch "A" Circuit
High Input- TP sensor (built into
throttle body)
- Open in VTA1 circuit
- Open in E2 circuit
- Short between VC
and VTA1 circuits
- ECMComes on DTC storedES-114
P0125 Insufficient Coolant
Temperature for
Closed Loop Fuel
Control- Cooling system
- ECT sensor
- ThermostatComes on DTC storedES-123
P0128 Coolant Thermostat
(Coolant
Temperature Below
Thermostat
Regulating
Temperature)- Thermostat
- Cooling system
- ECT sensor
- ECMComes on DTC storedES-126
P0136 Oxygen Sensor
Circuit Malfunction
(Bank 1 Sensor 2)- Open or short in
HO2 sensor (sensor
2) circuit
- HO2 sensor (sensor
2)
- HO2 sensor heater
(sensor 2)
- Air-Fuel Ratio (A/F)
sensor (sensor 1)
- Integration relay
(EFI MAIN relay)
- Gas leakage from
exhaust systemComes on DTC storedES-129
P0137 Oxygen Sensor
Circuit Low Voltage
(Bank 1 Sensor 2)- Open in HO2 sensor
(sensor 2) circuit
- HO2 sensor (sensor
2)
- HO2 sensor heater
(sensor 2)
- Integration relay
(EFI MAIN relay)
- Gas leakage from
exhaust systemComes on DTC storedES-129
P0138 Oxygen Sensor
Circuit High Voltage
(Bank 1 Sensor 2)- Short in HO2 sensor
(sensor 2) circuit
- HO2 sensor (sensor
2)
- ECM internal circuit
malfunctionComes on DTC storedES-129
P0141 Oxygen Sensor
Heater Circuit
Malfunction (Bank 1
Sensor 2)- Open or short in
HO2 sensor heater
circuit
- HO2 sensor heater
(sensor 2)
- Integration relay
(EFI MAIN relay)
- ECMComes on DTC storedES-80 DTC No. Detection Item Trouble Areas MIL Memory See page