Toyota Tundra. Manual — part 1587

CONFIRMATION DRIVING PATTERN".

HINT



If no exhaust gas leaks are present, a malfunction in the heated oxygen sensor circuit is
suspected.



If any exhaust gas leaks are present around the heated oxygen sensor, noise appears in the
output voltage of the heated oxygen sensor.

4. PERFORM CONFIRMATION DRIVING PATTERN

Fig. 201: Vehicle Driving Pattern
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Connect the Techstream to the DLC3.

b. Clear DTC (See DTC CHECK/CLEAR ).

HINT

Even if no DTCs are stored, perform the DTC clear operation to start alcohol concentration
learning.

c. Start the engine.

HINT

After clearing the DTCs, the engine may become difficult to start if the concentration of alcohol in
the fuel is high. Therefore, it may be necessary to crank the engine a few times before it starts.

d. Warm up the engine until the engine coolant temperature becomes 75°C (167°F) or more.

e. Drive the vehicle at 32 km/h (20 mph) or more for 2 minutes.

f. After this driving make sure that the Data List "Alcohol Density Learning" is "Compl".

g. Perform the drive pattern.

1. Accelerate the vehicle to 80 km/h (50 mph) and stop the vehicle.

2. Drive the vehicle between 60 and 80 km/h (35 and 50 mph) for 5 minutes.

h. Enter the following menu Powertrain/Engine and ECT/Trouble Codes.

i. Read the DTCs.

2009 Toyota Tundra

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

Result

DTC OUTPUT RESULT

B: REPLACE ECM (See REMOVAL )

C: Go to step 6

A: Go to Next Step

5. INSPECT DTC (P0136, P0137, P0138, P0156, P0157 OR P0158)

a. Inspect the P0136, P0137, P0138, P0156, P0157 or P0158 flowchart.

HINT



If P0136 or P0156 is output, troubleshoot for that DTC first (See DTC P0136 OXYGEN
SENSOR CIRCUIT MALFUNCTION (BANK 1 SENSOR 2); DTC P0137 OXYGEN
SENSOR CIRCUIT LOW VOLTAGE (BANK 1 SENSOR 2); DTC P0138 OXYGEN
SENSOR CIRCUIT HIGH VOLTAGE (BANK 1 SENSOR 2); DTC P0139 OXYGEN
SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 2); DTC P0156 OXYGEN
SENSOR CIRCUIT MALFUNCTION (BANK 2 SENSOR 2); DTC P0157 OXYGEN
SENSOR CIRCUIT LOW VOLTAGE (BANK 2 SENSOR 2); DTC P0158 OXYGEN
SENSOR CIRCUIT HIGH VOLTAGE (BANK 2 SENSOR 2); DTC P0159 OXYGEN
SENSOR CIRCUIT SLOW RESPONSE (BANK 2 SENSOR 2) ). Then proceed to "6
INSPECT ECM".



If P0137 or P0157 is output, troubleshoot for that DTC first (See DTC P0136 OXYGEN
SENSOR CIRCUIT MALFUNCTION (BANK 1 SENSOR 2); DTC P0137 OXYGEN
SENSOR CIRCUIT LOW VOLTAGE (BANK 1 SENSOR 2); DTC P0138 OXYGEN
SENSOR CIRCUIT HIGH VOLTAGE (BANK 1 SENSOR 2); DTC P0139 OXYGEN
SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 2); DTC P0156 OXYGEN
SENSOR CIRCUIT MALFUNCTION (BANK 2 SENSOR 2); DTC P0157 OXYGEN
SENSOR CIRCUIT LOW VOLTAGE (BANK 2 SENSOR 2); DTC P0158 OXYGEN
SENSOR CIRCUIT HIGH VOLTAGE (BANK 2 SENSOR 2); DTC P0159 OXYGEN
SENSOR CIRCUIT SLOW RESPONSE (BANK 2 SENSOR 2) ). Then proceed to "6
INSPECT ECM".



If P0138 or P0158 is output, troubleshoot for that DTC first (See DTC P0136 OXYGEN
SENSOR CIRCUIT MALFUNCTION (BANK 1 SENSOR 2); DTC P0137 OXYGEN
SENSOR CIRCUIT LOW VOLTAGE (BANK 1 SENSOR 2); DTC P0138 OXYGEN
SENSOR CIRCUIT HIGH VOLTAGE (BANK 1 SENSOR 2); DTC P0139 OXYGEN
SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 2); DTC P0156 OXYGEN
SENSOR CIRCUIT MALFUNCTION (BANK 2 SENSOR 2); DTC P0157 OXYGEN
SENSOR CIRCUIT LOW VOLTAGE (BANK 2 SENSOR 2); DTC P0158 OXYGEN

Result

Proceed to

P0136, P0137, P0138, P0156, P0157, P0158 and/or P0607

A

Only P0607

B

No DTC output

C

2009 Toyota Tundra

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

SENSOR CIRCUIT HIGH VOLTAGE (BANK 2 SENSOR 2); DTC P0159 OXYGEN
SENSOR CIRCUIT SLOW RESPONSE (BANK 2 SENSOR 2) ). Then proceed to "6
INSPECT ECM".



If DTC P0607 and P0136, P0137, P0138, P0156, P0157 or P0158 are output, the output
voltage of the heated oxygen sensor may remain close to 0 V or become high (around 1 V or
more).

6. INSPECT ECM

a. Connect the Techstream to the DLC3.

b. Clear DTC (See DTC CHECK/CLEAR ).

c. Stop the engine and wait for 30 minutes.

d. Start the engine and allow it to idle for 2 minutes.

e. Enter the following menus Powertrain/Engine and ECT/Trouble Codes.

f. Check the DTCs.

Result

DTC OUTPUT RESULT

B: REPLACE ECM (See REMOVAL )

A: END

DTC P060A INTERNAL CONTROL MODULE MONITORING PROCESSOR PERFORMANCE

DESCRIPTION

The main CPU and sub CPU of the ECM perform data communication between each other. The main CPU
monitors the communications and WDC pulses from the sub CPU. When the signal malfunctions below are
detected, a DTC is output.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE CHART

MONITOR STRATEGY

Result

Proceed to

DTC is not output

A

P0607 is output

B

DTC

DTC Detection Condition

Trouble Area

P060A

When either condition below is
met



ECM main CPU error



ECM sub CPU error



Electronic throttle
monitoring CPU error

ECM

2009 Toyota Tundra

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

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

TYPICAL MALFUNCTION THRESHOLDS CONDITIONS

INSPECTION PROCEDURE

1. CHECK DTC

a. Clear DTC (See DTC CHECK/CLEAR ).

b. Turn the ignition switch off.

c. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.

d. Connect the cable to the negative (-) battery terminal.

e. Turn the ignition switch to ON.

f. Check DTC.

OK:

P060A is not present.

NG: REPLACE ECM (See REMOVAL )

OK: CHECK FOR INTERMITTENT PROBLEMS (See CHECK FOR INTERMITTENT
PROBLEMS )

Related DTCs

None

Required sensors/components (main)

ECM

Required sensors/components (sub)

-

Frequency of operation

Once per driving cycle

Duration

16 seconds

MIL operation

Immediate

Sequence of operation

None

Monitor runs whenever the following DTCs are not present

None

CPU reset

Occurred

When either condition below is met

Condition 1 or 2

1. When all conditions below are met

-

CPU reset

1 time or more

Learned TP - Learned APP

0.4 V or more

Electronic throttle actuator

OFF

2. CPU reset

2 times or more

2009 Toyota Tundra

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