Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 73
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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1.
Key-off monitor sequence 1 to 8
1. Atmospheric pressure measurement
2. First reference pressure measurement
3. Vent valve stuck closed check
4. Vacuum introduction
5. Purge VSV stuck closed check
6. Second reference pressure measurement
7. Leak check
8. Atmospheric pressure measurement
TYPICAL MALFUNCTION THRESHOLDS
P0455: EVAP gross leak
P0456: EVAP small leak
MONITOR RESULT
Refer to CHECKING MONITOR STATUS (See page
Leak detection pump
Not operated by scan tool
Both of following conditions met before key off
Conditions 1 and 2
1. Duration that vehicle driven
5 minutes or more
2. EVAP purge operation
Performed
ECT
4.4
° to 35°C (40° to 95°F)
IAT
4.4
°to 35°C (40° to 95°F)
Next sequence run if following condition set
-
Atmospheric pressure change
Less than 0.3 kPa-g (2.25 mmHg-g) in 1 second
Next sequence run if all of following conditions set
Condition 1, 2 and 3
1. EVAP pressure just after reference pressure measurement start
-1 kPa-g (-7.5 mmHg-g) or less
2. Reference pressure
-4.85 to -1.057 kPa-g (-36.4 to -7.93 mmHg-g)
3. Reference pressure
Saturated within 60 seconds
Next sequence run if following condition set
-
EVAP pressure change after vent valve ON (closed)
0.3 kPa-g (2.25 mmHg-g) or more
Next sequence run if following condition set
-
EVAP pressure
Saturated within 15 minutes
Next sequence run if following condition set
-
EVAP pressure change after purge VSV ON (open)
0.3 kPa-g (2.25 mmHg-g) or more
Next sequence run if all of following conditions set
Condition 1, 2, 3 and 4
1. EVAP pressure just after reference pressure
-1 kPa-g (-7.5 mmHg-g) or less
2. Reference pressure
-4.85 to -1.057 kPa-g (-36.4 to -7.93 mmHg-g)
3. Reference pressure
Saturated within 60 seconds
4. Reference pressure difference between first and second
Less than 0.7 kPa-g (5.25 mmHg-g)
Next sequence run if following condition set
-
EVAP pressure when vacuum introduction complete
Second reference pressure or less
EVAP monitor complete if following condition set
-
Atmospheric pressure difference between sequence 1 and 8
Within 0.3 kPa-g (2.25 mmHg-g)
EVAP pressure when vacuum introduction complete
Higher than reference pressure x 0.2
EVAP pressure when vacuum introduction complete
Between reference pressure and reference pressure x 0.2
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1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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DESCRIPTION
Automatic Transmission Models:
Vehicles, which are equipped with ABS (Anti-lock Brake System), detect the vehicle speed using the skid
control ECU and wheel speed sensor. The wheel speed sensor monitors the wheel rotation speed and
sends a signal to the skid control ECU. The skid control ECU converts the wheel speed signal into a 4-
pulse signal and transmits it to the ECM via the combination meter. The ECM determines the vehicle
speed based on the frequency of the pulse signal.
Manual Transmission Models:
Vehicles, which are equipped with manual transmission, detect the vehicle speed using the No. 1 vehicle
speed sensor. The No. 1 vehicle speed sensor transmits a 4-pulse signal for every revolution of the rotor
shaft, which is rotated by the transmission or transfer output shaft via the driven gear. The 4-pulse signal
is converted into a more precise rectangular waveform by the waveform shaping circuit inside the
combination meter. The signal is then transmitted to the ECM. The ECM determines the vehicle speed
based on the frequency of the pulse signal.
DTC
P0500
Vehicle Speed Sensor "A"
From Wheel
Speed Sensor
Skid Control ECU
Combination Meter
4-Pulse
4-Pulse
ECM
A115899E01
Combination Meter
4-Pulse
4-Pulse
ECM
No. 1 Vehicle
Speed Sensor
A115900E01
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–249
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MONITOR DESCRIPTION
Automatic Transmission Models:
The ECM assumes that the vehicle is being driven, while the vehicle speed sensor signal is being
transmitted by the combination meter. If there is no signal from the combination meter, despite the ECM
detecting the speed signal from the speed sensor No. 2, the ECM interprets this as a malfunction in the
speed signal circuit. The ECM then illuminates the MIL and sets a DTC.
Manual Transmission Models:
The ECM assumes that the vehicle is being driven, when the indicated engine speed is more than 1,500
rpm and the engine load calculated by the ECM is more than certain level. If there is no signal from the
vehicle speed sensor, despite these conditions being met, the ECM interprets this as a malfunction in the
speed signal circuit. The ECM then illuminates the MIL and sets a DTC.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
Automatic Transmission:
Manual Transmission:
DTC No.
DTC Detection Conditions
Trouble Areas
P0500
Automatic Transmission Models:
ECM detects following conditions simultaneously 500 times
(1 trip detection logic)
•
No SP1 (speed sensor) signal while ECM detects SP2
(No. 2 speed sensor) signal
•
Vehicle speed 6 mph (9 km/h) or more for 4 seconds
•
Park/Neutral position switch OFF (shift lever other than P
and N positions)
•
Transfer lever in other than N position (4WD)
•
Open or short in speed signal circuit
•
Vehicle speed sensor
•
Combination meter
•
ECM
•
Skid control ECU
Manual Transmission Models:
Following conditions met for 5 seconds or more (2 trip
detection logic):
•
Engine coolant temperature 70
°C (158°F) or more
•
Engine speed 1,500 to 4,000 rpm
•
Fuel cut at high engine speed not executing
•
Engine load 31.6 % or more
Related DTCs
P0500: Vehicle speed sensor "A" pulse input error
Required Sensors/Components (Main)
Vehicle Speed Sensor (VSS), Combination meter and Skid control ECU
Required Sensors/Components (Related)
Park/neutral Position (PNP) switch, Engine Coolant Temperature (ECT) sensor,
Crankshaft Position (CKP) sensor and Mass Air Flow (MAF) meter
Frequency of Operation
Continuous
Duration
8 seconds: Manual transmission
Conditions met 500 times: Automatic transmission
MIL Operation
2 driving cycles: Manual transmission
Immediate: Automatic transmission
Sequence of Operation
None
Monitor runs whenever following DTCs not present
None
Time after following conditions met:
4 seconds or more
Ignition switch
ON
Park/neutral position switch
OFF
Vehicle speed
5.59 mph (9 km/h) or more
Time after ignition switch OFF to ON
More than 0.5 seconds
Transfer neutral switch (only for 4WD)
Not N position
Engine coolant temperature
70
°C (158°F) or more
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1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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TYPICAL MALFUNCTION THRESHOLDS
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using an intelligent tester. Freeze frame data record the engine condition 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.
(a) Drive the vehicle and check if the operation of the
speedometer in the combination meter is normal.
HINT:
•
The vehicle speed sensor is operating normally if the
speedometer reading is normal.
•
If the speedometer does not operate, check it by
following the procedure described in Speedometer
Malfunction (See page
NG
Engine speed
1,500 to 4,000 rpm
Fuel cut at high engine speed
Not executing
Engine load
31.6 % or more
Vehicle speed sensor signal
No pulse input
1
CHECK OPERATION OF SPEEDOMETER
ECM
SPD
To Main Body ECU, Voltage
Inverter, Accessory Meter,
A/C Amplifier and/or 4WD
Control ECU
14
13 SI
+S
Combination Meter Assembly
From Vehicle
Speed Sensor or
Skid Control ECU
E13
8
E46
A133420E01
GO TO MALFUNCTION IN SPEEDOMETER
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