2006 TOYOTA RAV4 Service Repair Manual

immobilizer rear entertainment brake fold seats rear view mirror low beam

Load previous 8 pages

Page 1985 of 2000

TOYOTA RAV4 2006 Service Repair Manual 2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–97
ES
(a) Disconnect the B1 MAF meter connector.
(b) Disconnect the B30 ECM connector.
(c) Measure the resistance.
Standard resistance (Check for open

Page 1986 of 2000

TOYOTA RAV4 2006 Service Repair Manual ES–982AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Check the EFI No. 1 fuse.
(b) Disconnect the B1 MAF meter connector.
(c) Remove the integration relay from the engine room No. 1
relay bloc

Page 1987 of 2000

TOYOTA RAV4 2006 Service Repair Manual 2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–99
ES
(a) Disconnect the B1 MAF meter connector.
(b) Measure the resistance.
Standard resistance
OK
NG
(a) Disconnect the B1 MAF meter connector.
(b)

Page 1988 of 2000

TOYOTA RAV4 2006 Service Repair Manual ES–1002AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DESCRIPTION
Refer to DTC P0100 (see page ES-86).
MONITOR DESCRIPTION
The MAF meter is a sensor that measures the amount of air flowing through

ES–1002AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DESCRIPTION
Refer to DTC P0100 (see page ES-86).
MONITOR DESCRIPTION
The MAF meter is a sensor that measures the amount of air flowing through the throttle valve. The ECM
uses this information to determine the fuel injection time and to provide an appropriate air-fuel ratio. Inside
the MAF meter, there is a heated platinum wire which is exposed to the flow of intake air. By applying a
specific electrical current to the wire, the ECM heats it to a specific temperature. The flow of incoming air
cools both the wire and an internal thermistor, affecting their resistance. To maintain a constant current
value, the ECM varies the voltage applied to these components of the MAF meter. The voltage level is
proportional to the airflow through the sensor, and the ECM uses it to calculate the intake air volume.
The ECM monitors the average engine load value ratio to check the MAF meter for malfunctions. The
average engine load value ratio is obtained by comparing the average engine load calculated from the
MAF meter output to the average engine load estimated from the driving conditions, such as the engine
speed and the throttle opening angle. If the average engine load value ratio is below the threshold value,
the ECM determines that the intake air volume is low, and if the average engine load value ratio is above
the threshold value, the ECM determines that the intake air volume is high.
If this is detected in 2 consecutive driving cycles, the MIL is illuminated and a DTC is set.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
DTC P0101Mass Air Flow Circuit Range / Performance
Problem
DTC No. DTC Detection Conditions Trouble Areas
P0101Conditions (a), (b), (c), (d) and (e) continue for more than 10
seconds (2 trip detection logic):
(a) Engine running
(b) Engine coolant temperature 70
C (158F) or higher
(c) Throttle Position (TP) sensor voltage 0.24 V or more
(d) Average engine load value ratio less than 0.85, or more
than 1.15 (varies with estimated engine load)
Average engine load value ratio = Average engine load based
on MAF meter output / Average engine load estimated from
driving conditions
(e) Average air-fuel ratio less than -20 %, or more than 20 %• Mass Air Flow (MAF) meter
• Air induction system
• PCV hose connections
Related DTCs P0101: Mass air flow meter rationality
Required Sensors/Components (Main) Mass air flow meter
Required Sensors/Components (Related)Crankshaft Position (CKP) sensor, Engine Coolant Temperature
(ECT) sensor and Throttle Position (TP) sensor
Frequency of Operation Continuous
Duration 10 seconds
MIL Operation 2 driving cycles
Sequence of Operation None
Monitor runs whenever following DTCs not presentP0115 - P0118 (ECT sensor)
P0120 - P0223, P2135 (TP sensor)
P0125 (Insufficient ECT for closed loop)
P0335 (CKP sensor)
P0340 (CMP sensor)
Throttle position (TP sensor voltage) 0.24 V or more
Engine Running
Battery voltage 10.5 V or more

Page 1989 of 2000

TOYOTA RAV4 2006 Service Repair Manual 2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–101
ES
TYPICAL MALFUNCTION THRESHOLDS
WIRING DIAGRAM
Refer to DTC P0100 (see page ES-88).
CONFIRMATION DRIVING PATTERN
HINT:
Performing this confirmat

Page 1990 of 2000

TOYOTA RAV4 2006 Service Repair Manual ES–1022AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when
malfunctio

Page 1991 of 2000

TOYOTA RAV4 2006 Service Repair Manual 2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–103
ES
DESCRIPTION
The Intake Air Temperature (IAT) sensor, mounted on the Mass Air Flow (MAF) meter, monitors the IAT.
The IAT sensor has a built-in

Page 1992 of 2000

TOYOTA RAV4 2006 Service Repair Manual ES–1042AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HINT:
When any of these DTCs are set, check the IAT by selecting the following menu items on the intelligent
tester: DIAGNOSIS / ENHANCED OBD

Load next 8 pages

Page: < prev 1-10 ... 1953-1960 1961-1968 1969-1976 1977-1984 1985-1992 1993-2000 next >

set clock seats coolant reservoir relay fuel tank removal dashboard