DTC P0340 [WL-C, WE-C (Thailand, General (L.H.D. R.H.D.) specs.)]

id0102b0807000

DTC P0340

Camshaft position (CMP) sensor circuit malfunction
DETECTION CONDITION
•  The PCM monitors the input signal from the CMP sensor while the engine is running. If the following conditions are detected, the PCM determines that the CMP circuit has a malfunction.
―  The PCM receives no pulse from the CMP sensor
―  The PCM receives an improper pulse number from the CMP sensor
POSSIBLE CAUSE
•  CMP sensor malfunction
•  Connector or terminal malfunction
•  Short to power supply between CMP sensor terminal C and PCM terminal 129
•  Short to power supply between CMP sensor terminal B and PCM terminal 160
•  Short to power supply between CMP sensor terminal A and PCM terminal 114
•  Short to ground between CMP sensor terminal C and PCM terminal 129
•  Short to ground between CMP sensor terminal B and PCM terminal 160
•  Open circuit between CMP sensor terminal C and PCM terminal 129
•  Open circuit between CMP sensor terminal B and PCM terminal 160
•  Open circuit between CMP sensor terminal A and PCM terminal 114
•  Loose CMP sensor installation bolt
•  CMP sensor pulse wheel malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record FREEZE FRAME DATA on repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related service repair information availability.
•  Is any related repair information available?
Yes
Perform repair or diagnosis according to available repair information.
•  If vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT?
•  Connect the M-MDS to the DLC-2.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Run the vehicle under the FREEZE FRAME DATA stored condition.
•  Is the same DTC present?
Yes
Go to the next step.
No
Intermittent concern exists.
Perform the “INTERMITTENT CONCERNS TROUBLESHOOTING”.
(See INTERMITTENT CONCERN TROUBLESHOOTING [WL-C, WE-C].)
4
INSPECT CMP CIRCUIT FOR SHORT TO POWER SUPPLY
•  Turn the engine switch off.
•  Disconnect the CMP sensor connector.
•  Turn the engine switch to the ON position. (Engine off).
•  Measure the voltage between the following terminals (wiring harness-side):
―  CMP sensor terminal A and body ground
―  CMP sensor terminal B and body ground
―  CMP sensor terminal C and body ground
•  Is the voltage B+?
Yes
Repair or replace the wiring harness, then go to Step 12.
No
Go to the next step.
5
VERIFY CMP SENSOR INSTALLATION CONDITION
•  Inspect for CMP sensor looseness.
•  Is CMP sensor loosen?
Yes
Retighten the CMP sensor installation bolt, then go the Step 12.
(See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [WL-C, WE-C].)
No
Go to the next step.
6
INSPECT CMP SENSOR
•  Turn the engine switch off.
•  Inspect the CMP sensor.
•  Is the CMP sensor normal?
Yes
Go to the next step.
No
Replace the CMP sensor, then go to Step 12.
(See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [WL-C, WE-C].)
7
INSPECT CMP SENSOR CONNECTOR FOR POOR CONNECTION
•  Turn the engine switch off.
•  Verify that the CMP sensor connector is connected securely.
•  Is the connector normal?
Yes
Go to the next step.
No
Reconnect the connector, then go to Step 10.
8
INSPECT CMP CIRCUIT FOR SHORT TO GROUND
•  Turn the engine switch off.
•  Inspect for continuity the between the following terminals:
―  CMP sensor connector terminal C (wiring harness-side) and body ground
―  CMP sensor connector terminal B (wiring harness-side) and body ground
•  Is there continuity?
Yes
Repair or replace the wiring harness, then go to Step 10.
No
Go to the next step.
9
INSPECT CMP CIRCUIT FOR OPEN CIRCUIT
•  Turn the engine switch off.
•  Inspect for continuity between the following terminals:
―  CMP sensor terminal C (wiring harness-side) and PCM terminal 129 (wiring harness-side)
―  CMP sensor terminal B (wiring harness-side) and PCM terminal 160 (wiring harness-side)
―  CMP sensor terminal A (wiring harness-side) and PCM terminal 114 (wiring harness-side)
•  Is there continuity?
Yes
Go to Step the next step.
No
Repair or replace the wiring harness, then go to Step 12.
10
INSPECT CMP SENSOR PULSE WHEEL
•  Inspect the CMP sensor pulse wheel for damage and/or cracks.
•  Is there any malfunction?
Yes
Replace the camshaft pulley, then go to Step 12.
(See CYLINDER HEAD GASKET REPLACEMENT [WL-C, WE-C].)
No
Go to the next step.
11
INSPECT PCM CONNECTOR FOR POOR CONNECTION
•  Turn the engine switch off.
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out terminals, corrosion).
•  Is there any malfunction?
Yes
Repair the terminal, then go to the next step.
No
Go to the next step.
12
VERIFY THAT DTC P0340 TROUBLESHOOTING IS COMPLETED
•  Turn the engine switch off.
•  Make sure to reconnect all disconnected connectors.
•  Turn the engine switch to the ON position (Engine off).
•  Clear the DTC from the memory using the M-MDS.
•  Run the vehicle under the FREEZE FRAME DATA stored condition.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [WL-C, WE-C].)
No
Go to the next step.
13
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “After Repair Procedure“.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [WL-C, WE-C (Thailand, General (L.H.D. R.H.D.) specs.)].)
No
DTC troubleshooting completed.