P1608

P1608 VVEL SENSOR POWER SUPPLY

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
1.Turn ignition switch OFF and wait at least 10 seconds.
2.Turn ignition switch ON.
3.Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

1.Turn ignition switch ON and wait at least 1 second.
2.Check DTC.
Is DTC detected?
YES- Go to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK GROUND CONNECTION

1.Turn ignition switch OFF.
2.Check ground connection M95, E46. Refer to Ground Inspection in "Circuit Inspection" Circuit Inspection.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace ground connection.

2. CHECK VVEL CONTROL SHAFT POSITION SENSOR POWER SUPPLY CIRCUIT

1.Disconnect VVEL control shaft position sensor harness connector.
2.Turn ignition switch ON.
3.Check the voltage between VVEL control shaft position sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 7.
NO- GO TO 3.

3. CHECK VVEL CONTROL SHAFT POSITION SENSOR POWER SUPPLY CIRCUIT FOR OPEN AND

SHORT
1.Turn ignition switch OFF.
2.Disconnect VVEL control module harness connector.
3.Check the continuity between VVEL control shaft position sensor harness connector and VVEL control module harness connector.





4.Also check harness for short to ground and power.
Is the inspection result normal?
YES- GO TO 5.
NO- GO TO 4.

4. DETECT MALFUNCTIONING PART

Check the following.
- Harness connectors F1, E3
- Harness for open or short between VVEL control shaft position sensor and VVEL control module
- Repair open circuit, short to ground or short to power in harness or connectors.

5. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace.

6. REPLACE VVEL CONTROL MODULE

1.Replace VVEL control module.
2.Go to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (VVEL CONTROL MODULE) : Special Repair Requirement" Special Repair Requirement.
- INSPECTION END

7. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace.

8. REPLACE VVEL ACTUATOR SUB ASSEMBLY

1.Replace VVEL actuator sub assembly. Refer to "Component Parts Location" Locations.
2.Go to "Special Repair Requirement" .
- INSPECTION END


Special Repair Requirement


1. PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT

Refer to "VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT : Special Repair Requirement" Special Repair Requirement.
- GO TO 2.

2. PERFORM IDLE AIR VOLUME LEARNING

Refer to "IDLE AIR VOLUME LEARNING : Special Repair Requirement" Special Repair Requirement.
- END