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DTC P0340-00: Camshaft Position Sensor system
 
 
 
 
CIRCUIT OPERATION
  • Output signal is supplied to the ECM connector terminal number 36 from the camshaft position sensor connector terminal number 3 and is grounded to the ECM connector terminal number 25 from the camshaft position sensor connector terminal number 2.
  • A power voltage of 5 volts is applied to the camshaft position sensor connector terminal number 1 from the ECM connector terminal number 15.
 
 
TECHNICAL DESCRIPTION
  • The camshaft position sensor detects the position of the intake camshaft and inputs the pulse signal to the ECM.
  • In response to the camshaft position sensor signal and the crankshaft position sensor signal, the ECM detects the compression top dead center of the number 1 cylinder.
  • Also, in response to the camshaft position sensor signal, the ECM controls variable valve timing (V.V.T.).
 
 
DESCRIPTIONS OF MONITOR METHODS
  • Camshaft position sensor signal does not change.
  • Camshaft position sensor signal is not normal pattern.
 
 
MONITOR EXECUTION
Continuous.
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Not applicable
Sensor (The sensor below is determined to be normal)
  • Not applicable
 
 
DTC SET CONDITIONS <Circuit continuity>
Logic Flow Chart
Check Condition
  • More than 20 revolutions after the engine speed is higher than 500 r/min.
    or
  • Engine speed is higher than 1,600 r/min.
Judgment Criterion
  • Camshaft position sensor output voltage has not changed (no pulse signal is input) for 2 seconds.
 
 
DTC SET CONDITIONS <Rationality – Alignment>
Logic Flow Chart
Check Condition
  • More than 20 revolutions after the engine speed is higher than 500 r/min.
    or
  • Engine speed is higher than 1,600 r/min.
Judgment Criterion
  • Normal signal pattern has not been input for cylinder identification from the crankshaft position sensor signal and camshaft position sensor signal for 2 seconds.
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • Engine runs in learned pattern until engine stops.
  • Does not control variable valve timing (V.V.T.).
 
 
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 1 OBD- II DRIVE CYCLE.
 
 
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  • Camshaft position sensor failed.
  • Open or shorted camshaft position sensor circuit, harness damage or connector damage.
  • Intake camshaft failed.
  • ECM failed.
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
1.STEP 1. Perform voltage measurement at camshaft position sensor connector terminal number 3.
  • Disconnect connector, and measure at harness side.
  • Power supply mode of electric motor switch: ON
  • Voltage between camshaft position sensor connector terminal number 3 and ground.
OK: 4.9 to 5.1 volts
Q: Is the check result normal?
 
2.STEP 2. Check harness between camshaft position sensor connector terminal number 3 and ECM connector terminal number 36.
Check output line for open/short circuit.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
3.STEP 3. Perform voltage measurement at camshaft position sensor connector terminal number 1.
  • Disconnect connector, and measure at harness side.
  • Power supply mode of electric motor switch: ON
  • Voltage between camshaft position sensor connector terminal number 1 and ground.
OK: 4.9 to 5.1 volts
Q: Is the check result normal?
 
4.STEP 4. Check harness between camshaft position sensor connector terminal number 1 and ECM connector terminal number 15.
Check power supply line for open/short circuit.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
5.STEP 5. Perform resistance measurement at camshaft position sensor connector terminal number 2.
  • Disconnect connector, and measure at harness side.
  • Resistance between camshaft position sensor connector terminal number 2 and ground.
OK: Continuity (2 ohms or less)
Q: Is the check result normal?
 
6.STEP 6. Check harness between camshaft position sensor connector terminal number 2 and ECM connector terminal number 25.
Check ground line for open circuit and damage.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
7.STEP 7. Test the OBD-II drive cycle.
After erasing the DTC, carry out test drive with the drive cycle pattern, and recheck the DTC.
(1) Use scan tool (M.U.T.-III SE) to erase the DTC.
(2) Carry out test drive with the drive cycle pattern (Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 1 OBD- II DRIVE CYCLE).
(3) Use scan tool (M.U.T.-III SE) to recheck the DTC.
Q: Is DTC P0340-00 set?
Replace the ECM (Refer to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION).
Intermittent malfunction (Refer to GENERAL INFORMATION, General Information – How to Use Troubleshooting/Inspection Service Points – How to Cope with Intermittent Malfunctions HOW TO COPE WITH INTERMITTENT MALFUNCTIONS).
 
8.STEP 8. Check harness between camshaft position sensor connector terminal number 1 and ECM connector terminal number 15.
Check power supply line for damage.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
9.STEP 9. Check harness between camshaft position sensor connector terminal number 3 and ECM connector terminal number 36.
Check output line for damage.
Q: Is the check result normal?
Replace the camshaft position sensor (Refer to ENGINE, Engine Electrical – Camshaft position Sensor CRANKSHAFT POSITION SENSOR REMOVAL AND INSTALLATION). Then
Repair or replace the connector, or repair the damaged harness wire.
 
10.STEP 10. Test the OBD-II drive cycle.
After erasing the DTC, carry out test drive with the drive cycle pattern, and recheck the DTC.
(1) Use scan tool (M.U.T.-III SE) to erase the DTC.
(2) Carry out test drive with the drive cycle pattern (Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 1 OBD- II DRIVE CYCLE).
(3) Use scan tool (M.U.T.-III SE) to recheck the DTC.
Q: Is DTC P0340-00 set?
Replace the camshaft (intake side) (Refer to ENGINE, Engine Mechanical – Camshaft CAMSHAFT REMOVAL AND INSTALLATION). Then
The inspection is complete.
 
11.STEP 11. Test the OBD-II drive cycle.
After erasing the DTC, carry out test drive with the drive cycle pattern, and recheck the DTC.
(1) Use scan tool (M.U.T.-III SE) to erase the DTC.
(2) Carry out test drive with the drive cycle pattern (Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 1 OBD- II DRIVE CYCLE).
(3) Use scan tool (M.U.T.-III SE) to recheck the DTC.
Q: Is DTC P0340-00 set?
Replace the ECM (Refer to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION).
The inspection is complete.