P000B

FA20 ENGINE CONTROL: SFI SYSTEM: P000B, P000D, P0014, P0024; Camshaft Position "B" - Timing Slow Response Bank 1; 2013 MY FR-S [03/2012 -]
P000B - Camshaft Position "B" - Timing Slow Response Bank 1
P000D - Camshaft Position "B" - Timing Slow Response Bank 2
P0014 - Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1)
P0024 - Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 2)

DESCRIPTION

The Variable Valve Timing (VVT) system adjusts the exhaust valve timing to improve driveability. The engine oil pressure turns the VVT controller to adjust the valve timing.

The camshaft timing oil control valve is a solenoid valve and switches the engine oil line. The valve moves when the ECM applies 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

The ECM optimizes the exhaust valve timing using the Variable Valve Timing (VVT) system to control the exhaust camshaft. The VVT system includes the ECM, the camshaft timing oil control valve and the VVT controller (camshaft timing exhaust gear assembly). The ECM sends a target duty-cycle control signal to the camshaft timing oil control valve. 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 the actual exhaust valve timing are small, the ECM interprets this as a VVT controller stuck malfunction and stores a DTC.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

All

P000B, P000D

TYPICAL MALFUNCTION THRESHOLDS

P000B, P000D

P0014, P0024

MONITOR RESULT

Refer to detailed information in Checking Monitor Status Mode 6 Data.

CONFIRMATION DRIVING PATTERN

1. Connect the Techstream to the DLC3.

2. Turn the ignition switch to ON and turn the Techstream on.

3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation) Reading and Clearing Diagnostic Trouble Codes.

4. Turn the ignition switch off and wait for at least 30 seconds.

5. Turn the ignition switch to ON and turn the Techstream on.

6. Start the engine and warm it up until the engine oil temperature reaches 75°C (167°F) or higher.

7. Perform the following the confirmation driving pattern.

CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.

a. Idle the engine for 10 seconds or more [A].

b. Accelerate the vehicle to 97 km/h (60 mph) or more within 20 seconds [B].

c. Drive the vehicle at 97 km/h (60 mph) or more for 20 seconds or more [C].

d. Release the accelerator pedal to Decelerate until the vehicle speed decreases to less than 64 km/h (40 mph) [D].

HINT
Release the accelerator pedal fully to perform the fuel-cut.

e. Drive the vehicle at 60 km/h (40 mph) or less for 20 seconds or more [E].

f. Accelerate the vehicle to 97 km/h (60 mph) or more within 10 seconds [F].

g. Release the accelerator pedal and stop the vehicle [G].

8. Enter the following menus: Powertrain / Engine / Trouble Codes.

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 / Utility / All Readiness.

11. Input the DTC: P000B, P000D, P0014 or P0024.

12. Check the DTC judgment result.

HINT
* If the judgment result shows NORMAL, the system is normal.
* If the judgment result shows ABNORMAL, the system has a malfunction.

13. If the test result is INCOMPLETE or N/A 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

Refer to DTC P0013 P0013.

INSPECTION PROCEDURE

HINT
* If DTC P000B or P0014 is displayed, check the exhaust camshaft circuit for the right bank VVT system (bank 1).
* If DTC P000D or P0024 is displayed, check the exhaust camshaft circuit for the left bank VVT system (bank 2).
* DTC P0014 or P0024 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Those foreign objects may then be captured by the oil filter.
* 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 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.

PROCEDURE

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P000B, P000D, P0014 OR P0024)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read DTCs.

Result

HINT
If any DTCs other than P000B, P000D, P0014 or P0024 are output, troubleshoot those DTCs first.

B -- GO TO DTC CHART SFI System
A -- Continue to next step.

2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE)

(a) Connect the Techstream to the DLC3.

(b) Start the engine.

(c) Turn the Techstream on.

(d) Turn the A/C switch on.

(e) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 1), Control the VVT Exhaust Linear (Bank 2).

(f) Check the engine speed while operating the camshaft timing oil control (for exhaust camshaft) using the Techstream.

OK:

HINT
Refer to "Data List / Active Test" [VVT Ex OCV Duty #1, VVT Ex OCV Duty #2 and VVT Ex Chg Angle #1, VVT Ex Chg Angle #2] Data List / Active Test.

NG -- CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH)
OK -- Continue to next step.

3. CHECK WHETHER DTC OUTPUT RECURS (DTC P000B, P000D, P0014 OR P0024)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(e) Turn the ignition switch off and wait for at least 30 seconds.

(f) Turn the ignition switch to ON.

(g) Turn the Techstream on.

(h) Start the engine and warm it up.

(i) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

(j) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

(k) Read pending DTCs.

Result

HINT
DTC P000B, P000D, P0014 or P0024 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. These foreign objects may then be captured by the oil filter.

B -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems
A -- Continue to next step.

4. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH)

(a) Check the valve timing Removal.

NG -- ADJUST VALVE TIMING Installation
OK -- Continue to next step.

5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE (FOR EXHAUST CAMSHAFT)

(a) Inspect the camshaft timing oil control valve (for exhaust camshaft) Inspection.

NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE (FOR EXHAUST CAMSHAFT) Removal
OK -- Continue to next step.

6. INSPECT CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY

(a) Inspect the camshaft timing exhaust gear assembly Engine Unit.

HINT
* DTC P000B, P000D, P0014 or P0024 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. These foreign objects may then be captured by the oil filter.

NG -- REPLACE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY Removal
OK -- Continue to next step.

7. CLEAN LUBRICATION SYSTEM

(a) Replace the engine oil Replacement.

(b) Warm up the engine for 5 minutes, and then stop the engine.

(c) Replace the engine oil and filter Replacement.

NEXT -- Continue to next step.

8. CHECK WHETHER DTC OUTPUT RECURS (DTC P000B, P000D, P0014 OR P0024)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(e) Turn the ignition switch off and wait for at least 30 seconds.

(f) Turn the ignition switch to ON.

(g) Turn the Techstream on.

(h) Start the engine and warm it up.

(i) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

(j) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

(k) Read pending DTCs.

Result