Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 18

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

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•

The vehicle is at stationary.

•

The engine coolant temperature is between 
4.4

°C and 35°C (40°F and 95°F).

•

The intake air temperature is between 4.4

°C and 

35

°C (40°F and 95°F).

•

Vehicle was driven in the city area (or on free-
way) for 10 minutes or more.

(b) Monitor Conditions

(1) Turn the ignition switch OFF and wait for 6 

hours.
HINT:
Do not start the engine until checking Readiness 
Monitor Status. If the engine is started, the step 
described above must be repeated.

(c) Monitor Status

(1) Connect an intelligent tester to the DLC3.
(2) Turn the ignition switch ON.
(3) Turn the tester or scan tool ON.
(4) Check the Readiness Monitor Status displayed 

on the tester or scan tool.
If the status does not switch to COMPL 
(complete), restart the engine, make sure that 
the preconditions have been met, and then 
perform the Monitor Conditions again.

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1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

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3.

AIR-FUEL RATIO (A/F) AND HEATED OXYGEN (HO2) 
SENSOR MONITORS (ACTIVE AIR-FUEL RATIO 
CONTROL TYPE)
(a) Preconditions

The monitor will not run unless:
•

2 minutes or more have elapsed since the engine 
was started.

•

The Engine Coolant Temperature (ECT) is 75

°C 

(167

°F) or more.

•

Cumulative driving time at a vehicle speed of 30 
mph (48 km/h) or more exceeds 6 minutes.

•

Air-fuel ratio feedback control is performed.

•

Fuel-cut control is performed for 8 seconds or 
more (for the Rear HO2 Sensor Monitor)

(b) Drive Pattern for front A/F sensor and HO2 sensor

(1) Connect an intelligent tester to the DLC3.
(2) Turn the ignition switch ON.
(3) Turn the tester ON.
(4) Clear DTCs (See page 

ES-38

).

(5) Start the engine, and warm it up until the ECT 

reaches 75

°C (167°F) or higher.

(6) Drive the vehicle at 38 mph (60 km/h) or more 

for at least 10 minutes.

(7) Change the transmission to 2nd gear.
(8) Accelerate the vehicle to 40 mph (64 km/h) or 

more by depressing the accelerator pedal for at 
least 10 seconds.

ETC: 75°C (167°F) or higher

Monitor Drive Pattern

Vehicle Speed

At least 3 times

Accelerator Pedal 
Released (Fuel-cut)

Accelerator Pedal 
Depressed

Idling

Warming up

10 minutes 
or more

4 seconds 
or more

10 seconds 
or more

Time

38 to 75 mph 
(60 to 120 km/h)

40 mph (64 km/h) 
or more

(5)

(6)

(7)

(8)

(9)

(10)

6 mph 
(10 km/h)

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1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

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(9) Soon after performing step (8) above, release 

the accelerator pedal for at least 4 seconds 
without depressing the brake pedal, in order to 
execute fuel-cut control.

(10)Allow the vehicle to decelerate until the vehicle 

speed declines to less than 6 mph (10 km/h).

(11)Repeat steps from (8) through (10) above at 

least 3 times in one driving cycle.

(c) Monitor Status

(1) Check the Readiness Monitor Status displayed 

on the tester.

(2) If the status does not switch to COMPL 

(complete), make sure that the preconditions 
have been met, and then perform steps from (5) 
through (11) in Drive Pattern above.

4.

AIR-FUEL RATIO (A/F) AND HEATED OXYGEN (HO2) 
SENSOR HEATER MONITORS (FRONT A/F AND 
REAR HO2 SENSOR TYPE)

(a) Preconditions

The monitor will not run unless:
•

The MIL is OFF

(b) Drive Pattern

(1) Connect an intelligent tester to the DLC3.
(2) Turn the ignition switch ON.
(3) Turn the tester or scan tool ON.
(4) Clear DTCs (See page 

ES-38

).

(5) Start the engine.
(6) Allow the engine to idle for 10 minutes or more.
(7) Drive the vehicle at 25 mph (40 km/h) or more 

for at least 2 minutes.

2 minutes or more

25 mph (40 km/h)

Idling

Ignition Switch OFF

10 minutes or more

(6)

(7)

Vehicle Speed

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(c) Monitor Status

(1) Check the Readiness Monitor Status displayed 

on the tester or scan tool.
If the status does not switch to COMPL 
(complete), make sure that the preconditions 
have been met, and repeat steps through (5) to 
(7) described in the Drive Pattern above.