Toyota Tundra (2015 year). Manual — part 1502
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000XH80LHX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P0015,P0024,P0025; Camshaft Position "B" -
Timing Over-Advanced or System Performance (Bank 1); 2015 MY Tundra [08/2014 - ]
DTC
P0014
Camshaft Position "B" - Timing Over-Advanced or System Performance
(Bank 1)
DTC
P0015
Camshaft Position "B" - Timing Over-Retarded (Bank 1)
DTC
P0024
Camshaft Position "B" - Timing Over-Advanced or System Performance
(Bank 2)
DTC
P0025
Camshaft Position "B" - Timing Over-Retarded (Bank 2)
DESCRIPTION
HINT:
If DTC P0014, P0015, P0024 or P0025 is present, check the VVT (Variable Valve Timing) system.
The Variable Valve Timing (VVT) system includes the ECM, 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 exhaust camshaft angle using oil
conditions. The ECM detects the actual exhaust valve timing using signals from the camshaft and crankshaft
position sensors, and performs feedback control. This is how the target exhaust valve timing is verified by the
ECM.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P001...
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0014
P0024
Exhaust valve timing is not adjusted in valve timing
advance range
(2 trip detection logic)
Valve timing
Oil control valve (for exhaust
side)
OCV filter
Camshaft timing exhaust gear
assembly
ECM
P0015
P0025
Exhaust valve timing is not adjusted in valve timing
retard range
(1 trip detection logic)
Valve timing
OCV (for exhaust side)
OCV filter
Camshaft timing exhaust gear
assembly
ECM
MONITOR DESCRIPTION
The ECM optimizes the exhaust valve timing using the VVT (Variable Valve Timing) system to control
the exhaust camshaft. The VVT system includes the ECM, Oil Control Valve (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 exhaust camshaft.
If the difference between the target and actual exhaust valve timing is large, and changes in actual
exhaust valve timing are small, the ECM interprets this as the VVT controller stuck malfunction and
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P001...
stores a 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 OCV malfunctions or the
Related DTCs
P0014: Advanced camshaft timing (for Bank 1)
P0015: Retarded camshaft timing (for Bank 1)
P0024: Advanced camshaft timing (for Bank 2)
P0025: Retarded camshaft timing (for Bank 2)
Required sensors/Components
(Main)
OCV (for exhaust 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: 2 driving cycles
Retarded camshaft timing: Immediate
TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs are not
stored
P0013, P0023 (Exhaust camshaft timing oil control valve)
P0017, P0019 (Exhaust 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
Engine coolant temperature
75 to 100°C (167 to 212°F)
TYPICAL MALFUNCTION THRESHOLDS
Advanced Camshaft Timing
Both conditions are met:
-
More than 5°CA (Crankshaft Angle) for 5 seconds or more after the VVT
hold duty ratio learned value reaches the upper or lower limit.
Valve timing
No change at advanced valve timing
Retarded Camshaft Timing
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P001...
Both conditions are met:
-
More than 5°CA (Crankshaft Angle) for 5 seconds or more after the VVT
hold duty ratio learned value reaches the upper or lower limit.
Valve timing
No change at retarded valve timing
CONFIRMATION DRIVING PATTERN
Connect the Techstream to the DLC3.
1.
Turn the ignition switch to ON and turn the Techstream on.
2.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
3.
Turn the ignition switch off and wait for at least 30 seconds.
4.
Turn the ignition switch to ON and turn the Techstream on [A].
5.
Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or
higher [B].
6.
Drive the vehicle at approximately 60 km/h (37 mph) for 10 minutes or more [C].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
7.
Idle the engine for 3 minutes or more [D].
8.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
9.
Read pending DTCs.
HINT:
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
10.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11.
Input the DTC: P0014, P0015, P0024 or P0025.
12.
Check the DTC judgment result.
TECHSTREAM
DISPLAY
DESCRIPTION
NORMAL
DTC judgment completed
System normal
13.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P001...
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст