DTC P0340 or P0341 (LPL or LPV)
Diagnostic Instructions
DTC Descriptor
DTC P0340: Intake Camshaft Position Sensor
Circuit |
DTC P0341: Intake Camshaft Position Sensor
Performance |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
5V Reference
|
P0652
|
P0340
|
P0653
|
-
|
Signal
|
P0341
|
P0340
|
-
|
P0340
|
Low Reference
|
-
|
P0340
|
-
|
-
|
|
|
Component
|
Condition
|
DTCs
|
Sensor - Camshaft
|
• |
Foreign material passing between the Sensor -
Camshaft and the reluctor wheel |
• |
Gap between the Sensor - Camshaft and the reluctor
wheel is out of range |
|
P0340 00
|
Reluctor Wheel
|
• |
Foreign material passing between the Sensor -
Camshaft and the reluctor wheel |
|
P0340 00
|
|
|
Circuit/System Description
The camshaft position sensor correlates the crankshaft to
camshaft position so that the engine control module (ECM) can
determine which cylinder is ready to be fueled by an injector. As
the camshaft rotates, the reluctor wheel interrupts a magnetic
field produced by a magnet within the sensor and sends a signal to
the ECM through the signal circuit.
Conditions for Running the DTC
• |
The engine speed is greater
than 50 RPM. |
• |
The DTCs run continuously once
the above conditions are met. |
Conditions for Setting the DTC
P0340
The ECM detects no camshaft position sensor signal.
P0341
The ECM detects to few camshaft position sensor pulses.
Action Taken When the DTC Sets
DTCs P0340, and P0344 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0340, and P0344 are Type B DTCs.
Diagnostic Aids
The following conditions can also set the DTC:
• |
Physical damage to the
camshaft position sensor or the reluctor wheel |
• |
Gap between the camshaft
position sensor and the reluctor wheel is out of range |
• |
Improper installation of the
camshaft position sensor or the reluctor wheel |
• |
Foreign material passing
between the camshaft position sensor and the reluctor wheel
|
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
1. |
Engine running, observe the
DTC information with a scan tool. DTCs P0340, and P0344 should not
set. |
2. |
Operate the vehicle within the
Conditions for Running the DTC to verify the DTC does not reset.
You may also operate the vehicle within the conditions that you
observed from the Freeze Frame/Failure Records data. |
Circuit/System Testing
1. |
Ignition OFF, disconnect the
harness connector at the B23 Camshaft Position Sensor. |
2. |
Test for less than 5 Ω
of resistance between the low reference circuit terminal 2 and
ground. |
⇒ |
If greater than the specified range, test the low
reference circuit for an open/high resistance. If the circuit test
normal, replace the K20 Engine Control Module. |
3. |
Ignition ON, test for greater
than 4.8 V between the 5 V reference circuit terminal 3 and
ground. |
⇒ |
If less than the specified range, test the 5 V
reference circuit for an open/high resistance. If the circuit test
normal, replace the K20 Engine Control Module |
4. |
Ignition ON, test for 4.8-5.2
V between the signal circuit terminal 1 and ground. |
⇒ |
If less than the specified range, test the signal
circuit for a short to ground or an open/high resistance. If the
circuit tests normal, replace the K20 Engine Control Module. |
⇒ |
If greater than the specified range, test the
signal circuit for a short to voltage. If the circuit tests normal,
replace the K20 Engine Control Module. |
5. |
If all circuits test normal,
test or replace the B23 Camshaft Position Sensor. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|