Toyota Tundra. Manual — part 1607

TYPICAL ENABLING CONDITIONS

All

TYPICAL ENABLING CONDITIONS - ALL

Sensor voltage detection monitor:

TYPICAL ENABLING CONDITIONS - SENSOR VOLTAGE DETECTION MONITOR

Sensor current detection monitor:

TYPICAL ENABLING CONDITIONS - SENSOR CURRENT DETECTION MONITOR

Required Sensors/Components (Main)

A/F sensor

Required Sensors/Components (Related)

HO2 sensor

Frequency of Operation

Continuous: Sensor voltage detection monitor
Once per driving cycle: Sensor current detection monitor

Duration

5 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

P0016, P0018 (VVT System - Misalignment)
P0017, P0019 (Exhaust VVT System - Misalignment)
P0031, P0032, P0051, P0052 (Air Fuel Ratio Sensor Heater)
P0102, P0103 (Mass Air Flow Sensor)
P0112, P0113 (Intake Air Temperature Sensor)
P0115, P0117, P0118 (Engine Coolant Temperature Sensor)
P0125 (Insufficient Coolant Temperature for Closed Loop Fuel
Control)
P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135
(Throttle Position Sensor)
P0128 (Thermostat)
P0171, P0172, P0174, P0175 (Fuel System)
P0301 - P0308 (Misfire)
P0335 (Crankshaft Position Sensor)
P1340 (Camshaft Position Sensor)
P0451, P0452, P0453 (EVAP System)
P0412, P0415, P0418, P0419, P1613, P1614 (Secondary Air
Injection System Control)
P2440, P2441, P2442, P2443, P2444, P2445, P2446, P2447
(Secondary Air Injection System)
P0500, P0722 (Vehicle Speed Sensor)
P0505 (IAC Valve)

Time after engine start

30 seconds or more

Fuel system status

Closed-loop

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

TYPICAL MALFUNCTION THRESHOLDS

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

TYPICAL MALFUNCTION THRESHOLDS CONDITIONS

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

TYPICAL MALFUNCTION THRESHOLDS CONDITIONS

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

TYPICAL MALFUNCTION THRESHOLDS CONDITIONS

Sensor current detection monitor (Rich side malfunction P2196 and P2198):

TYPICAL MALFUNCTION THRESHOLDS CONDITIONS

MONITOR RESULT

Refer to CHECKING MONITOR STATUS .

WIRING DIAGRAM

Battery voltage

11 V or more

Atmospheric pressure

76 kPa (570 mmHg) or more

A/F sensor status

Activated

Continuous time of fuel cut

3 to 10 seconds

ECT

75°C (167°F) or more

Rear HO2S voltage

Rises from less than 0 21 V to 0. 9 V or more

A/F sensor voltage

More than 3.8 V

Rear HO2S voltage

Falls from 0.59 V or more to less than 0.21 V

A/F sensor voltage

Less than 2.8 V

A/F sensor current

3.6 mA or more

A/F sensor current

Less than 0.78 mA

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

Fig. 236: Oxygen (A/F) Sensor - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

CONFIRMATION DRIVING PATTERN

HINT:



This confirmation driving pattern is used in the "Perform Confirmation Driving Pattern" procedure of the
following diagnostic troubleshooting procedure.

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra



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

Fig. 237: Vehicle Driving Pattern
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

1. Connect the Techstream to the DLC3.

NOTE:

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

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra