Camshaft Position Sensor Circuit

H: CAMSHAFT POSITION SENSOR CIRCUIT

CAUTION: After repair or replacement of faulty parts, conduct CLEAR MEMORY MODE and INSPECTION MODE.

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.




WIRING DIAGRAM

10AD1: CHECK HARNESS BETWEEN CAMSHAFT POSITION SENSOR AND ECM CONNECTOR.
1. Turn ignition switch to OFF.
2. Disconnect connector from camshaft position sensor.




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

CHECK: Is the resistance more than 100 kOhms?

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 10AD2.

10AD2: CHECK HARNESS BETWEEN CAMSHAFT POSITION SENSOR AND ECM CONNECTOR.




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

CHECK: Is the resistance less than 10 Ohms?

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 10AD3.

10AD3: CHECK HARNESS BETWEEN CAMSHAFT POSITION SENSOR AND ECM CONNECTOR.




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

CHECK: Is the resistance less than 5 Ohms?

YES: Go to step 10AD4.

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)

10AD4: CHECK CONDITION OF CAMSHAFT POSITION SENSOR.

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

YES: Go to step 10AD5.

NO: Tighten camshaft position sensor installation bolt securely.

10AD5: CHECK CAMSHAFT POSITION SENSOR.
1. Remove camshaft position sensor.




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

CHECK: Is the resistance between 1 and 4 kOhms?

YES: Repair poor contact in camshaft position sensor connector.

NO: Replace camshaft position sensor.