Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 47

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–143

ES

TYPICAL ENABLING CONDITIONS
All:

Heated Oxygen Sensor Output Voltage (Output Voltage, High Voltage and Low Voltage):

Heated Oxygen Sensor Impedance (Low):

Heated Oxygen Sensor Impedance (High):

Heated Oxygen Sensor Output Voltage (Extremely High):

TYPICAL MALFUNCTION THRESHOLDS

Heated Oxygen Sensor Output Voltage (Output voltage):

Monitor runs whenever following DTCs not present

P0031, P0032, P0051, P0052 (A/F sensor heater - Sensor 1)
P0037, P0038, P0057, P0058 (O2 sensor heater - Sensor 2)
P0100 - P0103 (MAF meter)
P0110 - P0113 (IAT sensor)
P0115 - P0118 (ECT sensor)
P0120 - P0223, P2135 (TP sensor)
P0125 (Insufficient ECT for closed loop)
P0171, P0172, P0174, P0175 (Fuel system)
P0300 - P0306 (Misfire)
P0335 (CKP sensor)
P0340 (CMP sensor)
P0455, P0456 (EVAP System)
P0500 (VSS)
P2196, P2198 (A/F sensor - rationality)
P2A00, P2A03 (A/F sensor - slow response)

Active air-fuel ratio control

Executing

Active air-fuel ratio control begins when all of following conditions met:

-

Battery voltage

11 V or more

Engine coolant temperature

75 

°C (167°F) or more

Idling

OFF

Engine RPM

Less than 3,200 rpm

A/F sensor status

Activated

Fuel system status

Closed loop

Fuel cut

OFF

Engine load

10 to 70 %

Shift position

4 th or more

Battery voltage

11 V or more

Estimated sensor temperature

Less than 700

°C (1,292°F)

ECM monitor

Completed

DTC P0606

Not set

Battery voltage

11 V or more

Estimated sensor temperature

520

°C to 750°C (968°F to 1,382°F)

ECM monitor

Completed

DTC P0606

Not set

Battery voltage

11 V or more

Time after engine start

2 seconds or more

Either of following conditions met:

1 or 2

1. All of following conditions (a), (b) and (c) met

-

(a) Commanded air-fuel ratio

14.3 or less

(b) Rear HO2 sensor voltage

0.21 to 0.59 V

(c) OSC (Oxygen Storage Capacity of Catalyst)

2.5 g or more

2. All of following conditions (d), (e) and (f) met

-

ES–144

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

Heated Oxygen Sensor Output Voltage (Low output voltage):

Heated Oxygen Sensor Output Voltage (High output voltage):

Heated Oxygen Sensor Impedance (Low):

Heated Oxygen Sensor Impedance (High):

Heated Oxygen Sensor Output Voltage (Extremely High):

COMPONENT OPERATING RANGE

MONITOR RESULT

Refer to CHECKING MONITOR STATUS (See page 

ES-20

).

(d) Commanded air-fuel ratio

14.9 or more

(e) Rear HO2 sensor voltage

0.21 to 0.59 V

(f) OSC

2.5 g or more

All of following conditions (a), (b) and (c) met

-

(a) Commanded air-fuel ratio

14.3 or less

(b) Rear HO2 sensor voltage

Less than 0.21 V

(c) OSC (Oxygen Storage Capacity of Catalyst)

2.5 g or more

All of following conditions (a), (b) and (c) met

-

(a) Commanded air-fuel ratio

14.9 or more

(b) Rear HO2 sensor voltage

More than 0.59 V

(c) OSC (Oxygen Storage Capacity of Catalyst)

2.5 g or more

Duration of following condition met

30 seconds or more

Heated oxygen sensor impedance

Less than 5 

Ω

Duration of following condition met

90 seconds or more

Heated oxygen sensor impedance

15 k

Ω or more

Duration of following condition met

10 seconds or more

Heated oxygen sensor voltage

1.2 V or more

Duration of following condition met

30 seconds or more

Heated oxygen sensor voltage

Varies between 0.1 V and 0.9 V

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–145

ES

WIRING DIAGRAM

CONFIRMATION DRIVING PATTERN

HINT:
•

This confirmation driving pattern is used in the "PERFORM CONFIRMATION DRIVING PATTERN" 
procedure of the following diagnostic troubleshooting procedure.

•

Performing this confirmation driving pattern will activate the Heated Oxygen (HO2) sensor monitor. 
(The catalyst monitor is performed simultaneously.) This is very useful for verifying the completion of a 
repair.

NOTICE:
This test will not be completed if the vehicle is driven under absolutely constant speed conditions 
such as with cruise control activated.

Battery

EFI

EFI

EFI 
No. 2

+B

E2

HT1B

OX1B

+B

E2

HT2B

OX2B

Heated Oxygen Sensor 
(Bank 2 Sensor 2)

Heated Oxygen Sensor (Bank 1 Sensor 2)

(*1)

(*1)

ECM

MREL

HT1B

OX1B

HT2B

OX2B

E2

*1: Shielded

B36

3

1

4

2

3

1

4

2

B34

1

2

1

2

5

3

1

2

B1

E47

8

B1

B2

B2

B1

5

33

28

18

1

A133412E02

ES–146

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

(a) Connect an intelligent tester to the DLC3.
(b) Turn the ignition switch ON.
(c) Turn the tester ON.
(d) Clear DTCs (See page 

ES-38

).

(e) Select the following menu items: DIAGNOSIS / CARB OBD II / READINESS TESTS.
(f) Check that O2S EVAL is INCMPL (incomplete).
(g) Start the engine and warm it up.
(h) Drive the vehicle at between 40 mph and 70 mph (64 km/h and 113 km/h) for at least 10 minutes.
(i) Note the state of the Readiness Tests items. Those items will change to COMPL (complete) as O2S 
EVAL monitor operates.
(j) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES 
and check if any DTCs (any pending DTCs) are set.
HINT:
If O2S EVAL does not change to COMPL, and any pending DTCs fail to set, extend the driving time.

INSPECTION PROCEDURE

HINT:
Intelligent tester only:
Malfunctioning areas can be identified by performing the A/F CONTROL function provided in the ACTIVE 
TEST. The A/F CONTROL function can help to determine whether the Air-Fuel Ratio (A/F) sensor, Heated 
Oxygen (HO2) sensor and other potential trouble areas are malfunctioning.

Ignition Switch ON

Idling

Between 40 and 70 mph 
(64 and 113 km/h )

Vehicle Speed

(g)

(h)

Warm up

10 minutes

Time

(Note: Even when vehicle stops during driving pattern, test can be 
resumed.)

NOTICE:

This test will not be completed if the 
vehicle is driven under absolutely 
constant speed, such as with cruise 
control activated.

A115372E19

A098191E02