pcv TOYOTA RAV4 2006 Service Repair Manual

2AZ-FE EMISSION CONTROL – EMISSION CONTROL SYSTEMEC–7
EC
ON-VEHICLE INSPECTION
1. CHECK FUEL CUT RPM
(a) Increase the engine speed to at least 3,500 rpm.
(b) Use a sound scope to check for injector operating
noise.
(c) Check that the operating sounds stop momentarily
and then resume when the throttle lever is released.
HINT:
Measure with the A/C OFF.
Fuel return rpm:
1,400 rpm
2. CHECK FOR LEAKS
(a) Visually check that the hoses, connections and
gaskets have no cracks, leaks or damage.
NOTICE:
• Detachment or other problems with the
engine oil dipstick, filler cap, PCV hose and
other components may cause the engine to
run improperly.
• Disconnection, looseness or cracks in the
parts of the air induction system between the
throttle body and cylinder head will allow air
suction and cause an engine failure or engine
malfunctions.
If the result is not as specified, replace parts as
necessary.
3. CHECK LINE AND CONNECTORS
(a) Visually check for loose connections, sharp bends
or damage.
4. CHECK FUEL TANK ASSEMBLY
(a) Visually check for deformation, cracks or fuel
leakage.
5. CHECK FUEL TANK AND VENT LINE
(a) Disconnect the vent line tube from the canister.
(b) Connect a pressure gauge to the vent line tube.
A124804E01
B011449E01
A127736E01

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

ES–302AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
Idle hunting1. Electronic throttle control systemES-265
2. Air induction systemEC-7
3. ECM power source circuitES-366
Hesitation/Poor acceleration1. Fuel pump control circuitES-378
2. Spark plugIG-7
3. Ignition systemIG-4
4. InjectorFU-11
5. Mass air flow meterES-391
6. Electronic throttle control systemES-265
7. Air induction systemEC-7
8. CompressionEM-3
Surging (Poor driveability)1. Spark plugIG-7
2. Fuel pump control circuitES-378
3. Ignition systemIG-4
4. InjectorFU-11
5. Mass air flow meterES-391
6. Variable valve timing systemES-66
7. CompressionEM-3
Engine stalls soon after starting1. Fuel pump control circuitES-378
2. Spark plugIG-7
3. Ignition systemIG-4
4. InjectorFU-11
5. Variable valve timing systemES-66
6. Electronic throttle control systemES-265
7. Air induction systemEC-7
8. PCV hoseEC-7
9. CompressionEM-3
Engine stalls only during A/C operation1. A/C signal circuit -
2. ECMES-26
Unable/difficult to refuel 1. Refueling valve (canister) - Symptom Suspected area See page

ES–322GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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.
Symptom Suspected area See page
Engine does not crank (Does not start)1. BatteryCH-5
2. StarterST-8
3. Starter relayST-16
4. Park/neutral position switchAX-132
5. Immobiliser systemEI-3
No initial combustion (Does not start)1. ECM power source circuitES-402
2. Crankshaft position sensorES-448
3. VVT sensorES-214
4. Ignition systemIG-5
5. Fuel pump control circuitES-414
6. ECMES-470
7. VC output circuitES-408
Engine cranks normally but difficult to start1. Fuel pump control circuitES-414
2. CompressionEM-3
Difficult to start with cold engine1. Ignition systemIG-5
2. Spark plugIG-7
3. Fuel pump control circuitES-414
4. InjectorFU-15
Difficult to start with warm engine1. InjectorFU-15
2. Ignition systemIG-5
3. Spark plugIG-7
4. Fuel pump control circuitES-414
High engine idle speed1. Electronic throttle control systemES-311
2. A/C signal circuit -
3. ECM power source circuitES-402
4. Acoustic Control Induction System (ACIS)ES-423
Low engine idle speed (Poor idling)1. Electronic throttle control systemES-311
2. A/C signal circuit -
3. Fuel pump control circuitES-414
4. Air induction systemIT-5
5. Acoustic Control Induction System (ACIS)ES-423
6. PCV hose -

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–33
ES
Rough idling1. CompressionEM-3
2. Spark plugIG-7
3. InjectorFU-15
4. Ignition systemIG-5
5. Fuel pump control circuitES-414
6. Electronic throttle control systemES-311
7. Air induction systemIT-5
8. Acoustic Control Induction System (ACIS)ES-423
9. PCV hose -
10. Mass air flow meterES-435
Idle hunting1. Electronic throttle control systemES-311
2. Air induction systemIT-5
3. ECM power source circuitES-402
4. Acoustic Control Induction System (ACIS)ES-423
Hesitation/Poor acceleration1. Fuel pump control circuitES-414
2. Spark plugIG-7
3. Ignition systemIG-5
4. InjectorFU-15
5. Mass air flow meterES-435
6. Electronic throttle control systemES-311
7. Air induction systemIT-5
8. CompressionEM-3
9. Air Intake Control System (AICS)ES-426
Surging (Poor driveability)1. Spark plugIG-7
2. Fuel pump control circuitES-414
3. Ignition systemIG-5
4. InjectorFU-15
5. Mass air flow meterES-435
6. Variable valve timing systemES-439
7. CompressionEM-3
Engine stalls soon after starting1. Fuel pump control circuitES-414
2. Spark plugIG-7
3. Ignition systemIG-5
4. InjectorFU-15
5. Variable valve timing systemES-439
6. Electronic throttle control systemES-311
7. Air induction systemIT-5
8. PCV hose -
9. CompressionEM-3
Engine stalls only during A/C operation1. A/C signal circuit -
2. ECMES-470
Unable/difficult to refuel 1. Refueling valve (canister) -Symptom Suspected area See page

EC–82GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM
EC
ON-VEHICLE INSPECTION
1. CHECK FUEL CUT RPM
(a) Increase the engine speed to at least 3,500 rpm.
(b) Use a sound scope to check for injector operating
noise.
(c) Check that the operating sounds stop momentarily
and then resume when the throttle lever is released.
HINT:
Measure with the A/C OFF.
Fuel return rpm:
1,400 rpm
2. CHECK FOR LEAKS
(a) Visually check that the hoses, connections and
gaskets have no cracks, leaks or damage.
NOTICE:
• Detachment or other problems with the
engine oil dipstick, filler cap, PCV hose and
other components may cause the engine to
run improperly.
• Disconnection, looseness or cracks in the
parts of the air induction system between the
throttle body and cylinder head will allow air
suction and cause an engine failure or engine
malfunctions.
If the result is not as specified, replace parts as
necessary.
3. CHECK LINE AND CONNECTORS
(a) Visually check for loose connections, sharp bends
or damage.
4. CHECK FUEL TANK ASSEMBLY
(a) Visually check for deformation, cracks or fuel
leakage.
5. CHECK FUEL TANK AND VENT LINE
(a) Disconnect the vent line tube from the canister.
(b) Connect a pressure gauge to the vent line tube.
A094394E01
A127736E01

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

ES–642AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
P0451 Evaporative Emission
Control System
Pressure Sensor
Range / Performance- Canister pump
module
- Connector/wire
harness (Canister
pump module - ECM)
- EVAP system hose
(pipe from air inlet
port to canister pump
module, canister
filter, fuel tank vent
hose)
- ECMComes on DTC storedES-210
P0452 Evaporative Emission
Control System
Pressure Sensor /
Switch Low Input- Same as DTC
P0451Comes on DTC storedES-210
P0453 Evaporative Emission
Control System
Pressure Sensor /
Switch High Input- Same as DTC
P0451Comes on DTC storedES-210
P0455 Evaporative Emission
Control System Leak
Detected (Gross
Leak)- Fuel cap (loose)
- Leakage from EVAP
line (Canister - Fuel
tank)
- Leakage from EVAP
line (Purge VSV -
Canister)
- Canister pump
module
- Leakage from fuel
tank
- Leakage from
canisterComes on DTC storedES-220
P0456 Evaporative Emission
Control System Leak
Detected (Very Small
Leak)- Same as DTC
P0455Comes on DTC storedES-220
P0500 Vehicle Speed
Sensor "A"- Open or short in
speed signal circuit
- Vehicle speed
sensor
- Combination meter
- ECM
- Skid control ECUComes on DTC storedES-224
P0504 Brake Switch "A" / "B"
Correlation- Short in stop light
switch signal circuit
- STOP fuse
- IGN fuse
- Stop light switch
- ECM- DTC storedES-229
P0505 Idle Control System
Malfunction- ETCS (Electronic
Throttle Control
System)
- Air induction system
- PCV hose
connections
- ECMComes on DTC storedES-233 DTC No. Detection Item Trouble Areas MIL Memory See page