Toyota Tundra (2015 year). Manual — part 1498

OK

REPLACE ECM

3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0010,P002...

Last Modified: 9-16-2014

6.6 C

Doc ID: RM000000PDU0WTX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0011,P0012,P0021,P0022; Camshaft Position "A" -

Timing Over-Advanced or System Performance (Bank 1); 2015 MY Tundra [08/2014 - ]

DTC

P0011

Camshaft Position "A" - Timing Over-Advanced or System Performance

(Bank 1)

DTC

P0012

Camshaft Position "A" - Timing Over-Retarded (Bank 1)

DTC

P0021

Camshaft Position "A" - Timing Over-Advanced or System Performance

(Bank 2)

DTC

P0022

Camshaft Position "A" - Timing Over-Retarded (Bank 2)

DESCRIPTION

The VVT system includes the ECM, Camshaft Timing Oil Control Valve Assembly (OCV) and 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. Camshaft timing control is performed according to engine operating conditions such as

the intake air volume, throttle valve position and engine coolant temperature. The ECM controls the OCV,

based on the signals transmitted by several sensors. The VVT controller regulates the intake camshaft angle

driving conditions. The ECM detects the actual intake valve timing using signals from the camshaft and

crankshaft position sensors, and performs feedback control. This is how the target intake valve timing is

verified by the ECM.

3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0011,P001...

DTC

NO.

DTC DETECTION CONDITION

TROUBLE AREA

P0011

P0021

Intake valve timing is not adjusted in valve timing

advance range

(1 trip detection logic)

Valve timing

OCV (for intake side)

OCV filter

Camshaft timing gear

assembly

ECM

P0012

P0022

Intake valve timing is not adjusted in valve timing retard

range

(2 trip detection logic)

Valve timing

OCV (for intake side)

OCV filter

Camshaft timing gear

assembly

ECM

MONITOR DESCRIPTION

The ECM optimizes the intake valve timing using the VVT (Variable Valve Timing) system to control the

intake camshaft. The VVT system includes the ECM, Camshaft Timing Oil Control Valve Assembly (OCV)

and 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.

If the difference between the target and actual intake valve timings is large, and changes in the actual

intake valve timing are small, the ECM interprets this as the VVT controller stuck malfunction and sets a

3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0011,P001...

DTC.

Example:

A DTC is stored when the following conditions 1 and 2 are met:

1. It takes 5 seconds or more to change the valve timing by 5°CA.

2. After condition 1 is met, the camshaft timing oil control valve is forcibly activated for 10

seconds.

These DTCs indicate that the VVT controller cannot operate properly due to camshaft timing oil control

Related DTCs

P0011: Advanced camshaft timing (for Bank 1)

P0012: Retarded camshaft timing (for Bank 1)

P0021: Advanced camshaft timing (for Bank 2)

P0022: Retarded camshaft timing (for Bank 2)

Required Sensors/Components

(Main)

OCV (for intake side) and VVT Actuator

Required Sensors/Components

(Related)

Crankshaft position sensor, Camshaft position sensor and Engine

coolant temperature sensor

Duration

Within 10 seconds

MIL Operation

Advanced camshaft timing: Immediate

Retarded camshaft timing: 2 driving cycles

TYPICAL ENABLING CONDITIONS

Monitor runs whenever following DTCs not

stored

P0010, P0020 (Camshaft Timing Oil Control Valve)

P0016, P0018 (VVT System - Misalignment)

P0102, P0103 (Mass Air Flow Meter)

P0115, P0117, P0118 (Engine Coolant Temperature Sensor)

P0125 (Insufficient Coolant Temperature for Closed Loop Fuel

Control)

P0335 (Crankshaft Position Sensor)

P1340 (Camshaft Position Sensor)

Battery voltage

11 V or more

Engine speed

500 to 4000 rpm

ECT

75 to 100°C (167 to 212°F)

TYPICAL MALFUNCTION THRESHOLDS

Advanced Camshaft Timing

Valve timing

No change at advanced valve timing

Retarded Camshaft Timing

3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0011,P001...