Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026ZCA |
Model Year Start: 2023 |
Model: Corolla |
Prod Date Range: [09/2022 -
] |
Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P034011; Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Ground; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] |
DTC
|
P034011
|
Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Ground
|
DESCRIPTION
The camshaft position sensor (VV1 signal) consists of a magnet and MRE (Magneto Resistance Element).
The intake camshaft has a timing rotor for the camshaft position sensor. When the intake camshaft rotates, changes occur in the air gaps between the timing rotor and MRE, which affects the magnetic field. As a result, the resistance of the MRE material fluctuates. The camshaft position sensor converts the camshaft rotation data to pulse signals, uses the pulse signals. The ECM uses the pulse signals to determine the camshaft angle. Then the ECM uses this data to control fuel injection duration and injection timing.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
MIL
|
Memory
|
Note
|
P034011
|
Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Ground
|
Diagnosis condition:
-
2 seconds or more have elapsed after the power switch is turned on (IG).
Abnormal condition:
-
The camshaft position sensor output voltage is less than 0.3 V.
Malfunction time:
Trip logic:
Detection conditions:
Sensors/components used for detection (Main):
Sensors/components used for detection (Related):
-
Crankshaft position sensor
|
-
Short in camshaft position sensor circuit
-
Camshaft position sensor
-
ECM
|
Comes on
|
DTC stored
|
-
SAE Code: P0342
-
DTC for Mexico Models: Applies
|
-
Reference: Inspection using an oscilloscope.
HINT:
-
The correct waveform is as shown.
-
VV1 represents the camshaft position sensor signal.
ECM Terminal Name
|
Between VV1+ and VV1-
|
Tester Range
|
5 V/DIV., 20 ms./DIV.
|
Condition
|
Idling with warm engine
|
MONITOR DESCRIPTION
2 seconds or more after the power switch has been turned on (IG), if the output voltage of the camshaft position sensor is less than 0.3 V for 4 seconds or more, the ECM determines that the camshaft position sensor circuit is malfunctioning and illuminates the MIL and stores a DTC.
MONITOR STRATEGY
Related DTCs
|
P0342: Camshaft position sensor range check (low voltage)
|
Required Sensors/Components (Main)
|
Camshaft position sensor
|
Required Sensors/Components (Related)
|
Crankshaft position sensor
|
Frequency of Operation
|
Continuous
|
Duration
|
4 seconds
|
MIL Operation
|
Immediate
|
Sequence of Operation
|
None
|
TYPICAL ENABLING CONDITIONS
All of the following conditions are met
|
-
|
Auxiliary battery voltage
|
8 V or higher
|
Power switch
|
On (IG)
|
Camshaft position sensor pulse input fail while starter off (P0340)
|
Not detected
|
TYPICAL MALFUNCTION THRESHOLDS
Camshaft position sensor voltage
|
Less than 0.3 V
|
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.
Click here
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
-
Connect the Techstream to the DLC3.
-
Turn the power switch on (IG).
-
Turn the Techstream on.
-
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
-
Turn the power switch off and wait for at least 30 seconds.
-
Turn the power switch on (IG) [A].
-
Turn the Techstream on.
-
Wait for 5 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.
-
Proceed to the next screen and enter the DTC to be checked.
-
Check the DTC judgment result.
Techstream 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
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
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 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
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTCs.
Powertrain > Engine > Clear DTCs
(e) Turn the power switch off and wait for at least 30 seconds.
NEXT
|
|
|
2.
|
CHECK DTC OUTPUT (DTC P034011 OR P034015)
|
HINT:
Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.
(a) Disconnect the camshaft position sensor connector.
(b) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(c) Enter the following menus: Powertrain / Engine / Trouble Codes.
(d) Read the DTCs.
Powertrain > Engine > Trouble Codes
HINT:
When the ECM, wire harnesses and connectors are normal, DTC P034015 will be stored when the connector of the sensor is disconnected.
Result
|
Proceed to
|
DTC P034015 is output
|
A
|
DTC P034011 is output
|
B
|
B
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM)
|
(a) Disconnect the camshaft position sensor connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
C10-1 (VVI+) or C147-110 (VV1+) - Body ground and other terminals
|
Always
|
10 kΩ or higher
|
C10-2 (VVI-) or C147-113 (VV1-) - Body ground and other terminals
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|