P0340

DTC P0340- CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION

DTC DETECTING CONDITION:
- Immediately at fault recognition

TROUBLE SYMPTOM:
- Engine stalls.
- Failure of engine to start

CAUTION: After repair or replacement of faulty parts, conduct CLEAR MEMORY MODE and INSPECTION MODE. Refer to How To Clear Diagnostic Trouble Codes.




WIRING DIAGRAM

10AF1: CHECK HARNESS BETWEEN CAMSHAFT POSITION SENSOR AND ECM CONNECTOR.
1. Turn ignition switch to OFF.
2. Disconnect connector from camshaft position sensor.

Connector & terminal (E15) No.1 - Engine ground:

3. Measure resistance of harness between camshaft position sensor connector and engine ground.

CHECK: Is the resistance more than 100 K.Ohm?

YES: Repair harness and connector.

NOTE: In this case, repair the following:
- Open circuit in harness between camshaft position sensor and ECM connector
- Poor contact in ECM connector
- Poor contact in coupling connector (B21)

NO: Go to step 10AF2.

10AF2: CHECK HARNESS BETWEEN CAMSHAFT POSITION SENSOR AND ECM CONNECTOR.

Connector & terminal (E15) No.1 - Engine ground:

Measure resistance of harness between camshaft position sensor connector and engine ground.

CHECK: Is the resistance less than 10 ohm?

YES: Repair ground short circuit in harness between camshaft position sensor and ECM connector.

NOTE: The harness between both connectors are shielded. Repair ground short circuit in harness together with shield.

NO: Go to step 10AF3.

10AF3: CHECK HARNESS BETWEEN CAMSHAFT POSITION SENSOR AND ECM CONNECTOR.

Connector & terminal (E15) No.2 - Engine ground:

Measure resistance of harness between camshaft position sensor connector and engine ground.

CHECK: Is the resistance less than 5 ohm?

YES: Go to step 10AF4.

NO: Repair harness and connector.

NOTE: In this case, repair the following:
- Open circuit in harness between camshaft position sensor and ECM connector
- Poor contact in ECM connector
- Poor contact in coupling connector (B21)

10AF4: CHECK CONDITION OF CAMSHAFT POSITION SENSOR.

CHECK: Is the camshaft position sensor installation bolt tightened securely?

YES: Go to step 10AF5.

NO: Tighten camshaft position sensor installation bolt securely.

10AF5: CHECK CAMSHAFT POSITION SENSOR.
1. Remove camshaft position sensor.

Terminals No.1 - No.2:

2. Measure resistance between connector terminals of camshaft position sensor.

CHECK: Is the resistance between 1 and 4 K.Ohm

YES: Repair poor contact in camshaft position sensor connector.

NO: Replace camshaft position sensor.