Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 90

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–315

ES

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

ALL

Sensor voltage detection monitor (Lean side malfunction P2195, P2197):

Sensor voltage detection monitor (Rich side malfunction P2196, P2198):

Sensor current detection monitor (P2195, P2196, P2197, P2198):

Related DTCs

P2195: A/F sensor (Bank 1) signal stuck lean
P2196: A/F sensor (Bank 1) signal stuck rich
P2197: A/F sensor (Bank 2) signal stuck lean
P2198: A/F sensor (Bank 2) signal stuck rich

Required Sensors/Components (Main)

A/F sensor

Required Sensors/Components (Related)

HO2 sensor

Frequency of Operation

Continuous

Duration

10 seconds: Sensor voltage detection monitor
3 seconds: Sensor current detection monitor

MIL Operation

2 driving cycles

Sequence of Operation

None

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)
P0136, P0156 (O2 Sensor - Sensor 2)
P0171, P0172, P0174, P0175 (Fuel system)
P0300 - P0306 (Misfire)
P0335 (CKP sensor)
P0340, P0341 (CMP sensor)
P0455, P0456 (EVAP system)
P0500 (VSS)

Time while all of following conditions met

2 seconds or more

Rear HO2 sensor voltage

0.15 V or more

Time after engine start

30 seconds or more

A/F sensor status

Activated

Fuel system status

Closed-loop

Engine

Running

Time while all of following conditions met

2 seconds or more

Rear HO2 sensor voltage

Below 0.6 V

Time after engine start

30 seconds or more

A/F sensor status

Activated

Fuel system status

Closed-loop

Engine

Running

Battery voltage

11 V or more

Atmospheric pressure

76 kpa (570 mmHg) or higher

Air-fuel ratio sensor status

Activated

Engine coolant temperature

75

°C (167°F) or more

Continuous time of fuel cut

3 to 10 seconds

ES–316

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

TYPICAL MALFUNCTION THRESHOLDS

Sensor voltage detection monitor (Lean side malfunction P2195, P2197):

Sensor voltage detection monitor (Rich side malfunction P2196, P2198):

Sensor current detection monitor (High side malfunction P2195, P2197):

Sensor current detection monitor (Low side malfunction P2196, P2198):

MONITOR RESULT

Refer to CHECKING MONITOR STATUS (See page 

ES-20

).

A/F sensor voltage

More than 3.8 V for 10 seconds

A/F sensor voltage

Less than 2.8 V for 10 seconds

Air-fuel ratio sensor current during fuel cut

3.6 mA or more

Air-fuel ratio sensor current during fuel cut

Less than 1.4 mA

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–317

ES

WIRING DIAGRAM

CONFIRMATION DRIVING PATTERN

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

3

1

4

MREL

HA1A

ECM

A1A+

A1A-

HA2A

A2A+

A2A-

Shielded

Shielded

B31
Air-fuel Ratio Sensor 
(Bank 2 Sensor 1)

B33

Air-fuel Ratio Sensor 
(Bank 1 Sensor 1)

HA2A

A2A+

+B

A2A-

HA1A

A1A+

+B

A1A-

A/F 
HEATER

A/F 
HEATER

Battery

EFI

EFI

2

3

1

4

2

1

B2

22

B2

2

B2

30
B2

31

B2

23

B2

8

E47

5

3

1

2

5

3

2

1

1

2

1

2

A133427E01

ES–318

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) Start the engine, and warm it up until the ECT reaches 75

°C (167°F) or higher.

(f) Select the following menu items to check the fuel-cut status: DIAGNOSIS / ENHANCED OBD II / DATA 
LIST / USER DATA / FC IDLE.
(g) Drive the vehicle at between 38 mph (60 km/h) and 75 mph (120 km/h) for at least 10 minutes.
(h) Change the transmission to 2nd gear.

Monitor Drive Pattern

ECT: 75°C (167°F) or more

Vehicle Speed

Warming up

At least 3 times

Accelerator Pedal
Depressed

Accelerator Pedal
Released (Fuel-cut)

10 minutes
or more

10 seconds
or more

Between 38 and 
75 mph
(60 and 120 km/h)

40 mph (64 km/h)
or more

6 mph
(10 km/h)

Idling

(e)

(h)

Time

(g)

(i)

(j)

(k)

4 seconds
or more

Refer to figure below

A107162E11

Driving Pattern Detail for (h) through (k)

Reference Engine RPM

Cumulative Detection Period "t" = t1 + t2 + t3 = 3 seconds or more

2,500 rpm

1,000 rpm

Idling

Idling

4 seconds
or more

4 seconds
or more

4 seconds
or more

(h)

(i)

(j)

(k)

Delay

Detection Period t1

t2

t3

Time

A107163E09