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)
HINT: If DTC P0011, P0012, P0021 or P0022 is present, check the VVT (Variable Valve Timing) system.
DESCRIPTION Refer to DTC P0010
DTC No. |
DTC Detection Condition |
Trouble Area |
P0011 P0021 |
Advanced cam timing:
With warm engine and engine speed of between 500
rpm and 4000 rpm, all conditions (a), (b) and (c) are
met (1 trip detection logic):
|
|
P0012 P0022 |
Retarded cam timing:
With warm engine and engine speed of between 500
rpm and 4000 rpm, all conditions (a), (b) and (c) are
met (2 trip detection logic):
|
|
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, 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 applied 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 actual intake valve timing are small, the ECM interprets this as the VVT controller stuck malfunction and sets a DTC.
Example: A DTC will be set when the following conditions 1), 2) and 3) are met:
DTCs P0011 and P0021 (Advanced Cam Timing) are detected with 1 trip detection logic.
DTCs P0012 and P0022 (Retarded Cam Timing) are detected with 2 trip detection logic.
These DTCs indicate that the VVT controller cannot operate properly due to OCV malfunctions or the presence of foreign objects in the OCV.
The monitor will not run unless the following conditions are met:
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
P0011, P0021:
P0012, P0022:
If the difference between the target and actual camshaft timings is greater than the specified value, the ECM operates the VVT actuator.
Then, the ECM monitors the camshaft timing change for 5 seconds.
WIRING DIAGRAM
Refer to DTC P0010
INSPECTION PROCEDURE
HINT:
1 CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022)
Result
HINT: If any DTCs other than P0011, P0012, P0021 or P0022 are output, troubleshoot those DTCs first.
2 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (OPERATE OCV)
OK
3 CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022)
OK: No DTC outputs.
SYSTEM IS OK
4 CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN)
OK: The timing marks of the camshaft pulley and the camshaft bearing cap align when the notch of the crankshaft pulley is in the "0" position.
5 INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV)
Standard resistance
OK: Valve moves quickly.
6 CHECK OIL PIPE AND OIL CONTROL VALVE FILTER
OK: The filter and pipe are not clogged.
7 REPLACE CAMSHAFT TIMING GEAR ASSEMBLY
8 CHECK WHETHER DTC OUTPUT RECURS
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 output 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.
SYSTEM IS OK
Brake Switch "A" Circuit
DTC P0571 Brake Switch "A" Circuit
DESCRIPTION
When the brake pedal is depressed, the stop light switch sends a signal to
the ECM. When the ECM
receives this signal, it cancels the cruise control. The fail-safe function
operates to enable normal driving
even if there is a malfuncti ...
Road test
1. PROBLEM SYMPTOM CONFIRMATION
HINT:
The dynamic laser cruise control system has two cruise
control modes: the constant speed control mode and
vehicle-to-vehicle distance control mode.
The vehicle-to-vehicle distance control mode is
always selected when starting up the dynamic laser ...
Other functions
Switching between outside air and recirculated air modes
Press .
The mode switches between outside air mode (
appears on the
display) and recirculated air mode (
appears on the display) each
time the button is pressed.
Defogging the windshield
Defoggers are used to defog the windshield a ...