Toyota Tundra. Manual — part 1482

Fig. 15: Vehicle Speed Driving Pattern
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Preconditions

The monitor will not run unless:



The MIL is OFF.

b. Drive Pattern

1. Connect the Techstream to the DLC3.

2. Turn the ignition switch to ON.

3. Turn the Techstream ON.

4. Clear DTCs (if set) (see DTC CHECK/CLEAR ).

5. Start the engine.

6. Allow the engine to idle for 10 minutes or more.

7. Drive the vehicle at 40 km/h (25 mph) or more for at least 2 minutes.

c. Monitor Status

1. Check the Readiness Monitor status displayed on the Techstream.

If the status does not switch to complete, make sure that the preconditions have been met,
and repeat steps from (5) to (7) described in the Drive Pattern above.

PROBLEM SYMPTOMS TABLE

HINT:



Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are
listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area"
column of the table. Check each symptom by checking the suspected areas in the order they are listed.
Replace parts as necessary.



Inspect the fuses and relays related to this system before inspecting the suspected areas below.

SFI SYSTEM

PROBLEM SYMPTOM CHART

Symptom

Suspected Area

Refer To

Engine does not crank (Does not
start)

Battery

ON-VEHICLE INSPECTION

Starter

INSPECTION

Starter relay

STARTER RELAY

Cranking Holding Function
Circuit

CRANKING HOLDING
FUNCTION CIRCUIT

Park/neutral position switch

INSPECTION

Immobilizer system

HOW TO PROCEED WITH

2009 Toyota Tundra

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

TROUBLESHOOTING

No initial combustion (Does not
start)

ECM power source circuit

ECM POWER SOURCE
CIRCUIT

Crankshaft position sensor

DTC P0335 CRANKSHAFT
POSITION SENSOR "A"
CIRCUIT; DTC P0337
CRANKSHAFT POSITION
SENSOR "A" CIRCUIT LOW
INPUT; DTC P0338
CRANKSHAFT POSITION
SENSOR "A" CIRCUIT HIGH
INPUT; DTC P0339
CRANKSHAFT POSITION
SENSOR "A" CIRCUIT
INTERMITTENT

Camshaft position sensor

DTC P1340 CAMSHAFT
POSITION SENSOR
"A" (BANK 1 SENSOR 2); DTC
P1342 CAMSHAFT POSITION
SENSOR "A" LOW INPUT
(MRE); DTC P1343 CAMSHAFT
POSITION SENSOR "A" HIGH
INPUT (MRE)

Ignition system

ON-VEHICLE INSPECTION

Fuel pump control circuit

FUEL PUMP CONTROL
CIRCUIT

Fuel Injector Circuit

FUEL INJECTOR CIRCUIT

ECM

TERMINALS OF ECM

VC output circuit

VC OUTPUT CIRCUIT

Fuel Pressure Switching System FUEL PRESSURE SWITCHING

SYSTEM

Engine cranks normally but
difficult to start

Fuel pump control circuit

FUEL PUMP CONTROL
CIRCUIT

Compression

ON-VEHICLE INSPECTION

Fuel Pressure Switching System FUEL PRESSURE SWITCHING

SYSTEM

Difficult to start with cold engine

Ignition system

ON-VEHICLE INSPECTION

Spark plug

ON-VEHICLE INSPECTION

Fuel pump control circuit

FUEL PUMP CONTROL
CIRCUIT

Injector

INSPECTION

Fuel Pressure Switching System FUEL PRESSURE SWITCHING

SYSTEM

Injector

INSPECTION

Ignition system

ON-VEHICLE INSPECTION

2009 Toyota Tundra

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

Difficult to start with warm
engine

Spark plug

ON-VEHICLE INSPECTION

Fuel pump control circuit

FUEL PUMP CONTROL
CIRCUIT

High engine idle speed

Electronic throttle control system THROTTLE BODY
A/C signal circuit (for Automatic
Air Conditioning System)

TERMINALS OF ECU

A/C signal circuit (for Manual
Air Conditioning System)

TERMINALS OF ECU

ECM power source circuit

ECM POWER SOURCE
CIRCUIT

Acoustic Control Induction
System (ACIS)

ACIS CONTROL CIRCUIT

Fuel Pressure Switching System FUEL PRESSURE SWITCHING

SYSTEM

Low engine idle speed (Poor
idling)

Electronic throttle control system THROTTLE BODY
A/C signal circuit (for Automatic
Air Conditioning System)

TERMINALS OF ECU

A/C signal circuit (for Manual
Air Conditioning System)

TERMINALS OF ECU

Fuel pump control circuit

FUEL PUMP CONTROL
CIRCUIT

Air induction system

ON-VEHICLE INSPECTION

Acoustic Control Induction
System (ACIS)

ACIS CONTROL CIRCUIT

PCV hose

ON-VEHICLE INSPECTION

Fuel Pressure Switching System FUEL PRESSURE SWITCHING

SYSTEM

Rough idling

Compression

ON-VEHICLE INSPECTION

Spark plug

ON-VEHICLE INSPECTION

Injector

INSPECTION

Ignition system

ON-VEHICLE INSPECTION

Fuel pump control circuit

FUEL PUMP CONTROL
CIRCUIT

Electronic throttle control system THROTTLE BODY
Air induction system

ON-VEHICLE INSPECTION

Acoustic Control Induction
System (ACIS)

ACIS CONTROL CIRCUIT

PCV hose

ON-VEHICLE INSPECTION

Mass air flow meter

MASS AIR FLOW METER

Fuel Pressure Switching System FUEL PRESSURE SWITCHING

SYSTEM

Electronic throttle control system THROTTLE BODY
Air induction system

ON-VEHICLE INSPECTION

2009 Toyota Tundra

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

Idle hunting

ECM power source circuit

ECM POWER SOURCE
CIRCUIT

Acoustic Control Induction
System (ACIS)

ACIS CONTROL CIRCUIT

Fuel Pressure Switching System FUEL PRESSURE SWITCHING

SYSTEM

Hesitation/Poor acceleration

Fuel pump control circuit

FUEL PUMP CONTROL
CIRCUIT

Spark plug

ON-VEHICLE INSPECTION

Ignition system

ON-VEHICLE INSPECTION

Injector

INSPECTION

Mass air flow meter

MASS AIR FLOW METER

Electronic throttle control system THROTTLE BODY
Air induction system

ON-VEHICLE INSPECTION

Compression

ON-VEHICLE INSPECTION

Fuel Pressure Switching System FUEL PRESSURE SWITCHING

SYSTEM

Surging (Poor driveability)

Spark plug

ON-VEHICLE INSPECTION

Fuel pump control circuit

FUEL PUMP CONTROL
CIRCUIT

Ignition system

ON-VEHICLE INSPECTION

Injector

INSPECTION

Mass air flow meter

MASS AIR FLOW METER

Variable valve timing system

CAMSHAFT TIMING OIL
CONTROL VALVE ASSEMBLY

Compression

ON-VEHICLE INSPECTION

Fuel Pressure Switching System FUEL PRESSURE SWITCHING

SYSTEM

Engine stalls soon after starting

Fuel pump control circuit

FUEL PUMP CONTROL
CIRCUIT

Spark plug

ON-VEHICLE INSPECTION

Ignition system

ON-VEHICLE INSPECTION

Injector

INSPECTION

Variable valve timing system

CAMSHAFT TIMING OIL
CONTROL VALVE ASSEMBLY

Electronic throttle control system THROTTLE BODY
Air induction system

ON-VEHICLE INSPECTION

PCV hose

ON-VEHICLE INSPECTION

Compression

ON-VEHICLE INSPECTION

Fuel Pressure Switching System FUEL PRESSURE SWITCHING

SYSTEM

A/C signal circuit (for Automatic
Air Conditioning System)

TERMINALS OF ECU

2009 Toyota Tundra

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