P0023
2UR-GSE ENGINE CONTROL: SFI SYSTEM: P0013,P0023: Camshaft Position "B" Actuator Circuit / Open (Bank 1)
P0023 - Camshaft Position "B" Actuator Circuit / Open (Bank 2)
DESCRIPTION
This DTC is designed to detect an open or short in the camshaft oil control valve circuit. If the oil control valve duty-cycle is excessively high or low while the engine is running, the ECM will illuminate the MIL and set the DTC.
The Variable Valve Timing (VVT) system adjusts the exhaust valve timing to improve driveability. The engine oil pressure turns the camshaft actuator to adjust the valve timing. The oil control valve is a solenoid valve and switches the engine oil line. The valve moves when the ECM applies the 12 V to the solenoid. The ECM changes the energizing time to the solenoid (duty-cycle) in accordance with the camshaft position, crankshaft position, throttle position, etc.
MONITOR DESCRIPTION
This DTC is designed to detect an open or short in the camshaft oil control valve circuit. If the oil control valve duty-cycle is excessively high or low while the engine is running, the ECM will illuminate the MIL and set the DTC.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
COMPONENT OPERATING RANGE
CONFIRMATION DRIVING PATTERN
1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) Reading and Clearing Diagnostic Trouble Codes.
4. Turn the engine switch off and wait for 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on.
6. Wait 5 seconds [A].
7. Enter the following menus: Powertrain / Engine / Trouble Codes.
8. Read the DTC [B].
HINT
- If a DTC is output, the system is malfunctioning.
- If a DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
10. Input the DTC: P0013 or P0023.
11. Check the DTC judgment result.
HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result sows INCOMPLETE or UNKNOWN, perform step [A] again.
12. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
13. Check the DTC judgment result.
HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.
14. If the test result is INCOMPLETE or UNKNOWN and no DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.
HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT
- If DTC P0013 is displayed, check the bank 1 VVT system for exhaust side circuit.
- Bank 1 refers to the bank that includes the No. 1 cylinder*.
*: The No. 1 cylinder is the cylinder which is farthest from the transmission.
- If DTC P0023 is displayed, check the bank 2 VVT system for exhaust side circuit.
- Bank 2 refers to the bank that does not include the No. 1 cylinder.
- Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.
PROCEDURE
1. CHECK DTC (DTC P0013 OR P0023)
(a) Connect the Techstream to the DLC3.
(b) Clear DTCs after recording the freeze frame data and DTCs.
(c) Turn the engine switch off and wait for 30 seconds.
(d) Start the engine and allow the engine to idle and check for DTCs.
(e) Check if P0013 or P0023 is present.
Result:
B -- PERFORM ACTIVE TEST USING TECHSTREAM (OIL CONTROL VALVE FOR EXHAUST SIDE OPERATION)
A -- Continue to next step.
2. PERFORM ACTIVE TEST USING TECHSTREAM (OIL CONTROL VALVE FOR EXHAUST SIDE OPERATION)
(a) Connect the Techstream to the DLC3.
(b) Start the engine and turn the Techstream on.
(c) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 1). Check the engine speed while operating the oil control valve using the Techstream.
OK:
NG -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
OK -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems
3. PERFORM ACTIVE TEST USING TECHSTREAM (OIL CONTROL VALVE FOR EXHAUST SIDE OPERATION)
(a) Connect the Techstream to the DLC3.
(b) Start the engine and turn the Techstream on.
(c) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 2). Check the engine speed while operating the oil control valve using the Techstream.
OK:
NG -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
OK -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems
4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
(a) Remove the oil control valve assembly for bank 1 and/or bank 2 Removal.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(c) Connect a lead from the positive battery terminal to terminal 1, and a lead from the negative battery terminal to terminal 2. Check the valve operation.
OK:
Valve moves quickly.
(d) Reinstall the oil control valve.
NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (BANK 1 AND/OR BANK 2) Removal
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (OIL CONTROL VALVE - ECM)
(a) Disconnect the oil control valve connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Standard Resistance (Check for Short):
(d) Reconnect the oil control valve and ECM connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ECM Removal