DTC P0340 Camshaft Position Sensor Circuit (4JJ3 without DPD)

Note

  • If there is electromagnetic interference in the CMP sensor, this DTC may set.
  • If there is an intermittent CMP sensor signal pulse, this DTC may be set.
  • Even if the CMP sensor signal pulse is lost while the engine is running, the engine will operate normally. If the CMP sensor signal pulse is not present on startup, the engine will not start.

1. Engine control system check

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) Diagnostic system check-engine controls".

2. Current DTC check

1) Connect the scan tool.

2) Turn OFF the ignition switch for 1 minute or more.

3) Start the engine. If the engine does not start, crank the engine for 10 seconds.

4) Observe the DTC information with a scan tool. Is a DTC set?

Yes

=>Go to Prioritized DTC check.

No

Go to Intermittent conditions of engine.

Refer to "202.Engine 15D.Symptom(4JJ3 without DPD) intermittent conditions of engine".

3. Prioritized DTC check

1) Observe the DTC information with a scan tool. Is DTC P0651 set at the same time?

Yes

Go to DTC P0651 diagnosis.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) DTC P0651 Sensor Reference Voltage 2 Circuit".

No

=>Go to CMP sensor 5 V reference voltage check.

4. CMP sensor 5 V reference voltage check

1) Turn OFF the ignition switch.

2) Disconnect the CMP sensor harness connector (E19).

3) Turn ON the ignition switch.

4) Measure the voltage between the CMP sensor 5 V reference circuit (pin 3 of E19) and the body ground with a DMM. Is the voltage more than or equal to the specified value?

Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Value: 4.5 V

Yes

=>Go to CMP sensor signal voltage check.

No

=>Go to Inspection for open circuit in CMP sensor 5 V reference circuit.

5. CMP sensor signal voltage check

1) Measure the voltage between the CMP sensor signal circuit (pin 1 of E19) and the body ground with a DMM.

Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Value: 4.5 to 5.5 V

The reading is more than the specified value.

=>Go to Inspection for short to power supply in CMP sensor signal circuit.

The reading is within the specified range.

=>Go to CMP sensor signal voltage check using test lamp.

The reading is less than the specified value.

=>Go to Inspection for open circuit and short circuit in CMP sensor signal circuit.

6. CMP sensor signal voltage check using test lamp

1) Connect a test lamp between the CMP sensor signal circuit (pin 1 of E19) and the body ground.

2) Measure the voltage between the CMP sensor signal circuit (pin 1 of E19) and the body ground with a DMM. Is the voltage more than or equal to the specified value?

Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Value: 4.5 V

Yes

=>Go to Inspection for short to 5 V reference in CMP sensor signal circuit.

No

=>Go to CMP sensor low reference circuit inspection.

7. CMP sensor low reference circuit inspection

1) Measure the voltage between the 5 V reference circuit and the low reference circuit of the CMP sensor (pins 2 and 3 of E19) with a DMM. Is the voltage more than or equal to the specified value?

Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Value: 4.5 V

Yes

=>Go to CMP sensor harness connector inspection.

No

=>Go to Inspection for open circuit in CMP sensor low reference circuit.

8. Inspection for open circuit in CMP sensor 5 V reference circuit

1) Inspect the 5 V reference circuit between the ECM (pin 30 of E3) and the CMP sensor (pin 3 of E19) for an open circuit or high resistance. Is the result normal?

Caution

  • The CMP sensor shares the 5 V reference circuit with other sensors. A malfunction in the 5 V reference circuit may set DTCs on sensors that share this circuit.

Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to ECM harness connector inspection.

No

Repair the circuit as necessary.

=>Go to Repair verification.

9. Inspection for open circuit in CMP sensor low reference circuit

1) Inspect the low reference circuit between the ECM (pin 27 of E2) and the CMP sensor (pin 2 of E19) for an open circuit or high resistance. Is the result normal?

Caution

  • The CMP sensor shares the low reference circuit with other sensors. A malfunction in the low reference circuit may set DTCs on sensors that share this circuit.

Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to ECM harness connector inspection.

No

Repair the circuit as necessary.

=>Go to Repair verification.

10. Inspection for open circuit and short circuit in CMP sensor signal circuit

1) Inspect the signal circuit between the ECM (pin 18 of E1) and the CMP sensor (pin 1 of E19) for the following. Is the result normal?

  • Open circuit
  • Short to ground
  • Short to the low reference circuit
  • High resistance

Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to ECM harness connector inspection.

No

Repair the circuit as necessary.

=>Go to Repair verification.

11. Inspection for short to power supply in CMP sensor signal circuit

1) Inspect the signal circuit between the ECM (pin 18 of E1) and the CMP sensor (pin 1 of E19) for a short to the battery power supply circuit or a short to the ignition power supply circuit. Is the result normal?

Note

  • The CMP sensor may be damaged if the sensor signal circuit is shorted to the power supply.

Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to ECM replacement.

No

Repair the circuit as necessary.

=>Go to Repair verification.

12. Inspection for short to 5 V reference in CMP sensor signal circuit

1) Inspect the signal circuit between the ECM (pin 18 of E1) and the CMP sensor (pin 1 of E19) for a short to the 5 V reference circuit. Is the result normal?

Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to ECM replacement.

No

Repair the circuit as necessary.

=>Go to Repair verification.

13. CMP sensor harness connector inspection

1) Inspect for poor connections at the CMP sensor harness connector (pins 1, 2, and 3 of E19). Is the connection status normal?

Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to CMP sensor and chain sprocket inspection.

No

Repair the connections as necessary.

=>Go to Repair verification.

14. ECM harness connector inspection

1) Inspect for poor connections at the ECM harness connector (pin 18 of E1, pins 16 and 27 of E2, and pin 30 of E3). Is the connection status normal?

Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to ECM replacement.

No

Repair the connections as necessary.

=>Go to Repair verification.

15. CMP sensor and chain sprocket inspection

1) Inspect the CMP sensor and the chain sprocket for the following conditions. Is the result normal?

  • Damaged sensor
  • Loose or improperly installed sensor
  • Excessive clearance
  • Foreign material passing between the sensor and the chain sprocket
  • Chain sprocket damage
  • Loose or improperly installed chain sprocket

Yes

Replace the CMP sensor.

Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) CMP sensor removal".

Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) CMP sensor installation".

=>Go to Repair verification.

No

Repair or replace as necessary.

=>Go to Repair verification.

16. ECM replacement

Note

  • Perform programming after replacing the ECM.

Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM removal".

Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM installation".

Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM setting".

Procedure completion

=>Go to Repair verification.

17. Repair verification

1) Clear the DTC with a scan tool.

2) Turn OFF the ignition switch for 1 minute or more.

3) Start the engine.

4) Operate the vehicle under the conditions for running the DTC.

5) Observe the DTC information with a scan tool.

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