Toyota Tundra. Manual — part 1156

PROCEDURE ).

f. Drive the vehicle for more than 10 minutes.

g. Read output DTCs using the Techstream.

OK: No DTC output.

HINT:

DTC P0011, P0012, P0021 or P0022 is output when foreign objects in engine oil are caught in
some parts of the system. These codes will stay registered even if the system returns to normal after
a short time. These foreign objects are then captured by the oil filter, thus eliminating the source of
the problem.

NG : REPLACE ECM (See REMOVAL )

OK : SYSTEM OK

DTC P0016 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1
SENSOR A); DTC P0018 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION
(BANK 2 SENSOR A)

DESCRIPTION

Refer to DTC P0335 .

DTC TROUBLE DETECTION CONDITION CHART

MONITOR DESCRIPTION

The ECM optimizes the valve timing by using the VVT (Variable Valve Timing) system to control the intake
camshaft. The VVT system includes the ECM, the Oil Control Valve (OCV) and the VVT controller. The ECM
sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the
VVT controller. The VVT controller can advance or retard the intake camshaft. The ECM calibrates the intake
valve timing by setting the intake camshaft to the most retarded angle while the engine is idling. The ECM
closes the OCV to retard the cam. The ECM stores this value as the VVT learning value. When the difference
between the target and actual intake valve timings is 5°CA (Crankshaft Angle) or less, the ECM stores it.

If the VVT learning value matches the following conditions, the ECM determines the existence of a
malfunction in the VVT system, and sets the DTC.

DTC

No.

DTC Detection Condition

Trouble Area

P0016

Deviations in crankshaft and camshaft position
sensor 1 signals (2 trip detection logic)



Mechanical system (Timing chain has
jumped tooth or chain stretched)



Oil control valve (OCV)



Camshaft timing gear assembly



ECM

P0018

Deviations in crankshaft and camshaft position
sensor 2 signals (2 trip detection logic)

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra



VVT learning value: Less than 22.5°CA, or more than 45.2°CA.



Above condition continues for 18 seconds or more.

This DTC indicates that the intake camshaft has been installed toward the crankshaft at an incorrect angle,
caused by factors such as the timing chain having jumped a tooth.

This monitor begins to run after the engine has idled for 5 minutes.

MONITOR STRATEGY

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

TYPICAL MALFUNCTION THRESHOLDS

WIRING DIAGRAM

Refer to DTC P0335 .

Refer to DTC P0340 .

INSPECTION PROCEDURE

Related DTCs

P0016: Camshaft Timing Misalignment at idling

Required Sensors/Components (Main)

VVT actuator

Required Sensors/Components (Related)

VVT sensor, Crankshaft position sensor

Frequency of Operation

Once per driving cycle

Duration

Less than 1 minute

MIL Operation

2 driving cycles

Sequence of Operation

None

Monitor runs whenever following DTCs not present

P0011 (VVT system 1 - advance)
P0012 (VVT system 1 - retard)
P0021 (VVT system 2 - advance)
P0022 (VVT system 2 - retard)
P0115 - P0118 (ECT sensor)

Engine RPM

500 to 1000 RPM

One of following conditions is met

-

VVT learning value at maximum retarded valve timing (bank 1)

Less than 22.5°CA (crankshaft angle)

VVT learning value at maximum retarded valve timing (bank 2)

Less than 22.5°CA (crankshaft angle)

VVT learning value at maximum retarded valve timing (bank 1)

More than 45.2°CA (crankshaft angle)

VVT learning value at maximum retarded valve timing (bank 2)

More than 45.2°CA (crankshaft angle)

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

HINT:

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data
from the time the malfunction occurred.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0016, P0017, P0018 OR P0019)

a. Connect the Techstream to the DLC3.

b. Turn the ignition switch ON and turn the Techstream ON.

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

d. Read the DTCs.

Result

RESULT CHART

B : GO TO DTC CHART (See DIAGNOSTIC TROUBLE CODE CHART )

A : Go to next step

2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV)

a. Connect the Techstream to the DLC3.

b. Start the engine and turn the Techstream ON.

c. Warm up the engine.

d. Enter the following menus: Powertrain/Engine and ECT/Active Test/Control the VVT System

(Bank 1) or Control the VVT System (Bank 2).

e. Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream.

OK

ACTIVE TEST CHART

NG : Go to step 4

OK : Go to next step

3. ADJUST VALVE TIMING (See DTC P0016 CRANKSHAFT POSITION - CAMSHAFT

Display (DTC output)

Proceed To

P0016, P0018

A

P0016, P0018 and other DTCs

B

Tester Operation

Specified Condition

OCV OFF

Normal engine speed

OCV ON

Engine idles roughly or stalls (soon after OCV switched from OFF to ON)

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

POSITION CORRELATION (BANK 1 SENSOR A); DTC P0018 CRANKSHAFT POSITION -
CAMSHAFT POSITION CORRELATION (BANK 2 SENSOR A) )

NEXT : Go to step 6

4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (See DTC P0016

CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR A);
DTC P0018 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 2
SENSOR A) )

NG : REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (See REMOVAL )

OK : Go to next step

5. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

a. Replace the camshaft timing gear assembly (See REMOVAL ).

6. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

a. In order to erase the ECM learned values for valve timing, disconnect the cable from the negative (-

) battery terminal for 1 minute.

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

c. Connect the Techstream to the DLC3.

d. Turn the ignition switch ON and turn the Techstream ON.

e. Clear the DTCs (See DTC CHECK/CLEAR ).

f. Start the engine and idle it for 5 minutes.

g. Drive the vehicle in an urban area for approximately 10 minutes.

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

i. Read the DTCs.

Result:

DTCs are not output.

NG : GO TO DTC CHART (See DIAGNOSTIC TROUBLE CODE CHART )

OK : END

DTC P0031 OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 1);
DTC P0032 OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 1);
DTC P0051 OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT LOW (BANK 2 SENSOR 1);
DTC P0052 OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 2 SENSOR 1)

DESCRIPTION

Refer to DTC P2195 .

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra