M20F-FXS, M20G-FXS ENGINE CONTROL SFI SYSTEM P034031 Camshaft Position Sensor "A" Bank 1 or Single Sensor No Signal
DESCRIPTION
Refer to DTC P034011.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Note |
|---|---|---|---|---|---|
| P034031 | Camshaft Position Sensor "A" Bank 1 or Single Sensor No Signal | No camshaft position sensor (for intake camshaft) signal for 5 seconds at an engine speed of 600 rpm or higher (1 trip detection logic). | ·
Open or short in camshaft position sensor (for intake camshaft) circuit ·
Camshaft position sensor (for intake camshaft) ·
Intake camshaft ·
ECM |
Comes on | SAE Code: P0340 |
Reference: Inspection using an oscilloscope.
MONITOR DESCRIPTION
If no pulse signal is transmitted by the camshaft position sensor (for intake camshaft) despite the camshaft rotating, the ECM interprets this as a malfunction of the sensor.
MONITOR STRATEGY
| Required Sensors/Components (Main) | Camshaft position sensor (for intake camshaft) |
| Required Sensors/Components (Related) | Crankshaft position sensor |
| Frequency of Operation | Continuous |
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.
Turn the GTS on.
Put the engine in Inspection Mode (Maintenance Mode).
Start the engine [A].
Idle the engine for 10 seconds or more [B].
Enter the following menus: Powertrain / Engine / Trouble Codes [C].
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: P034031.
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 is malfunctioning.
·If the judgment result is INCOMPLETE, perform steps [B] through [C] again.
·[A] to [C]: 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 auxiliary 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
- NOTICE:
- ·
Vehicle Control History may be stored in the hybrid vehicle control ECU assembly if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the Freeze Frame Data and Vehicle Control History can be useful for troubleshooting.
(Select Powertrain in Health Check and then check the time stamp data.)
·If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.
- HINT:
- ·
If no problem is found through this diagnostic troubleshooting procedure, there may be a mechanical problem with the engine.
·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
| *a | Front view of wire harness connector
(to Camshaft Position Sensor (for Intake Camshaft)) |
- HINT:
-
Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.
Disconnect the camshaft position sensor (for intake camshaft) connector.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition C9-3 (VC) - Body ground Ignition switch ON 4.5 to 5.5 V C9-1 (VVI+) - Body ground Ignition switch ON 3.0 to 5.0 V
Turn the ignition switch off and wait for at least 30 seconds.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition C9-3 (VC) - C9-1 (VVI+) Ignition switch off 1.425 to 1.575 kΩ C9-2 (VVI-) - Body ground Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
| *a | Clearance |
Visually check the camshaft position sensor (for intake camshaft) for damage.
Check the camshaft position sensor (for intake camshaft) installation condition.
- OK:
The camshaft position sensor (for intake camshaft) does not have any damage and is installed properly.
- Result:
Proceed to OK NG
OK
NG
Check the timing rotor of the intake camshaft.
- OK:
Camshaft timing rotor does not have any cracks or deformation.
- HINT:
-
Perform "Inspection After Repair" after replacing the intake camshaft.
- Result:
Proceed to OK NG
OK
NG
Disconnect the camshaft position sensor (for intake camshaft) connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition C9-1 (VVI+) - C141-90 (VV1+) Always Below 1 Ω C9-2 (VVI-) - C141-89 (VV1-) Always Below 1 Ω C9-3 (VC) - C141-88 (VCV1) Always Below 1 Ω C9-1 (VVI+) or C141-90 (VV1+) - Body ground and other terminals Always 10 kΩ or higher C9-2 (VVI-) or C141-89 (VV1-) - Body ground and other terminals Always 10 kΩ or higher C9-3 (VC) or C141-88 (VCV1) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG