M20C-FKS, M20D-FKS ENGINE CONTROL SFI SYSTEM P001400 Camshaft Position "B" - Timing Over-Advanced or System Performance Bank 1 P001500 Camshaft Position "B" - Timing Over-Retarded Bank 1
DESCRIPTION
Refer to DTC P001313.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Note |
|---|---|---|---|---|---|
| P001400 | Camshaft Position "B" - Timing Over-Advanced or System Performance Bank 1 | Exhaust valve timing is stuck at a certain value when in the advance range (2 trip detection logic). | ·
Valve timing ·
Cam timing oil control solenoid assembly ·
Camshaft timing oil control valve assembly (exhaust camshaft timing gear bolt assembly) ·
Camshaft timing exhaust gear assembly ·
ECM |
Comes on | SAE Code: P0014 |
| P001500 | Camshaft Position "B" - Timing Over-Retarded Bank 1 | Exhaust valve timing is stuck at a certain value when in the retard range (1 trip detection logic). | ·
Valve timing ·
Cam timing oil control solenoid assembly ·
Camshaft timing oil control valve assembly (exhaust camshaft timing gear bolt assembly) ·
Camshaft timing exhaust gear assembly ·
ECM |
Comes on | SAE Code: P0015 |
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, cam timing oil control solenoid assembly, camshaft timing oil control valve assembly (exhaust camshaft timing gear bolt assembly) and camshaft timing exhaust gear assembly. The ECM sends a target duty-cycle control signal to the cam timing oil control solenoid assembly. The camshaft timing oil control valve assembly (exhaust camshaft timing gear bolt assembly) is operated to control the oil pressure supplied to the camshaft timing exhaust gear assembly based on this signal. The camshaft timing gear assembly 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 the camshaft timing exhaust gear assembly stuck malfunction and stores a DTC.
Example:
A DTC is stored when the following conditions are met:
It takes 5 seconds or more to change the valve timing by 5°CA.
After the above condition is met, the cam timing oil control solenoid assembly is forcibly activated for 9.5 seconds.
These DTCs indicate that the camshaft timing exhaust gear assembly cannot operate properly due to a camshaft timing oil control valve assembly (exhaust camshaft timing gear bolt assembly) malfunction or the presence of foreign matter in the camshaft timing oil control valve assembly (exhaust camshaft timing gear bolt assembly).
CONFIRMATION DRIVING PATTERN
- HINT:
- ·
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
·When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON [A].
Turn the GTS on.
Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
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.
Idle the engine for 3 minutes or more [D].
Enter the following menus: Powertrain / Engine / Trouble Codes [E].
Read the pending DTCs.
- HINT:
- ·
If a pending DTC is output, the system is malfunctioning.
·If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P001400 or P001500.
Check the DTC judgment result.
| GTS Display | Description |
|---|---|
| NORMAL | ·
DTC judgment completed ·
System normal |
| ABNORMAL | ·
DTC judgment completed ·
System abnormal |
| INCOMPLETE | ·
DTC judgment not completed ·
Perform driving pattern after confirming DTC enabling conditions |
- HINT:
- ·
If the judgment result is NORMAL, the system is normal.
·If the judgment result is ABNORMAL, the system has a malfunction.
·If the judgment result is INCOMPLETE, perform steps [F] through [H].
·[A] to [E]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
·When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.
Repeat the pattern of accelerating the vehicle from rest to approximately 60 km/h (37 mph) and then decelerating the vehicle 10 to 15 times [F].
- CAUTION:
-
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
- HINT:
-
Depress the accelerator pedal by a large amount.
Idle the engine for 3 minutes or more [G].
Enter the following menus: Powertrain / Engine / Trouble Codes [H].
Read the pending DTCs.
- HINT:
- ·
If a pending DTC is output, the system is malfunctioning.
·If a pending DTC is not output, perform the following procedure.
Check the DTC judgment result again.
- HINT:
- ·
If the judgment result is NORMAL, the system is normal.
·If the judgment result is ABNORMAL, the system has a malfunction.
·[A] to [H]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
·When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- HINT:
- ·
DTC P001400 or P001500 may be stored when foreign matter in the engine oil is caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. This foreign matter may then be captured by the oil filter.
·Read Freeze Frame Data using the GTS. 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
Read the DTCs.
- Powertrain > Engine > Trouble Codes
- 50001 372
- Result:
Result Proceed to DTC P001400 or P001500 is output A DTC P001400 or P001500 and other DTCs are output B
- HINT:
-
If any DTCs other than P001400 or P001500 are output, troubleshoot those DTCs first.
A
B
Start the engine.
Check the engine speed while operating the cam timing oil control solenoid assembly using the GTS.
- Powertrain > Engine > Active Test
-
Tester Display Control the Exhaust VVT OCV Duty Ratio Bank 1 - 50004 372 5
- OK:
GTS Operation Engine Condition 0% Normal engine speed 100% Engine idles roughly or stalls
- HINT:
-
Refer to "Data List / Active Test" [Exhaust VVT Hold Learn Value Bank 1, Exhaust VVT Change Angle Bank 1, Exhaust VVT OCV Control Duty Ratio Bank 1 and Exhaust VVT Target Angle Bank 1].
- Result:
Proceed to OK NG
OK
NG
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
Read the DTCs.
- Powertrain > Engine > Trouble Codes
- 50001 372
- Result:
Result Proceed to DTCs are not output A DTC P001400 or P001500 is output B
- HINT:
-
DTC P001400 or P001500 may be stored when foreign matter in the engine oil is caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. That foreign matter may then be captured by the oil filter.
A
B
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to OK NG
OK
NG
| *a | Timing Mark |
| *b | TDC Timing Mark |
| *c | Groove |
Remove the cylinder head cover sub-assembly.
Turn the crankshaft pulley and align its groove with the TDC timing mark of the timing chain cover.
Check that the timing marks of the camshaft timing gear assembly and camshaft timing exhaust gear assembly are at the positions shown in the illustration.
- HINT:
-
If the timing marks are not as shown, turn the crankshaft one revolution clockwise.
- OK:
Timing marks on camshaft timing gear assembly and camshaft timing exhaust gear assembly are at the positions shown in the illustration.
- HINT:
-
If the result is not as specified, check for mechanical malfunctions that may have affected the valve timing, such as a jumped tooth or stretching of the timing chain.
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to NEXT
NEXT
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to NEXT
NEXT
Start the engine.
Check the engine speed while operating the cam timing oil control solenoid assembly using the GTS.
- Powertrain > Engine > Active Test
-
Tester Display Control the Exhaust VVT OCV Duty Ratio Bank 1 - 50004 372 5
- OK:
GTS Operation Engine Condition 0% Normal engine speed 100% Engine idles roughly or stalls
- HINT:
-
Refer to "Data List / Active Test" [Exhaust VVT Hold Learn Value Bank 1, Exhaust VVT Change Angle Bank 1, Exhaust VVT OCV Control Duty Ratio Bank 1 and Exhaust VVT Target Angle Bank 1].
- Result:
Proceed to OK NG
OK
NG
- HINT:
-
Perform "Inspection After Repair" after replacing the camshaft timing exhaust gear assembly.
- Result:
Proceed to NEXT
NEXT
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
Read the DTCs.
- Powertrain > Engine > Trouble Codes
- 50001 372
- Result:
Result Proceed to DTCs are not output A DTC P001400 or P001500 is output B
A
B