DTC Logic

DTC DETECTION LOGIC

Diagnosis Procedure

1.CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.

2. Check ground connection E38. Refer to Ground inspection in GI-44, "Circuit Inspection".

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair or replace ground connection.

2.CHECK CKP SENSOR (POS) GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect crankshaft position (CKP) sensor (POS) harness connector.

3. Disconnect ECM harness connector.

4. Check the continuity between CKP sensor (POS) harness connector and ECM harness connector

5. Also check harness for short to ground and short to power.

Is the inspection result normal? YES >> GO TO 3.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

3.CHECK CKP SENSOR (POS) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.

2. Also check harness for short to ground and short to power.

Is the inspection result normal? YES >> GO TO 4.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK CKP SENSOR (POS)

Refer to EC-933, "Component Inspection".

Is the inspection result normal? YES >> GO TO 5.

NO >> Replace crankshaft position sensor (POS).

5.CHECK GEAR TOOTH

Visually check for chipping flywheel gear tooth.

Is the inspection result normal? YES >> GO TO 6.

NO >> Replace signal plate.

6.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident", ???INCIDENT SIMULATION TESTS??? and ???GROUND INSPECTION???.

>> INSPECTION END

Component Inspection

1.CHECK CKP SENSOR (POS)

1. Turn ignition switch OFF.

2. Disconnect CKP sensor (POS) harness connector.

3. Check resistance between CKP sensor (POS) terminals as follows.

Is the inspection result normal? YES >> INSPECTION END

NO >> Replace CKP sensor.