P1093

P1090, P1093 VVEL ACTUATOR MOTOR





Description
The VVEL actuator motor rotates the control shaft according to the control signal from the VVEL control module. The VVEL control module judges whether the VVEL actuator motor controls the angle properly by the
VVEL control shaft position sensor signal.




DTC Logic

DTC DETECTION LOGIC

NOTE:
If DTC P1090 or P1093 is displayed with DTC P1091, first perform the trouble diagnosis for DTC P1091. P1091.






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. Start engine and let it idle for 10 second.
2. Keep the engine speed at about 3,500 rpm for at least 10 seconds under no load.
3. Check DTC.
Is DTC detected?
YES - Go to SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connections M95, E46. Refer to Ground Inspection in Circuit Inspection.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace ground connection.
2.VVEL ACTUATOR MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect VVEL control module harness connector.
2. Disconnect VVEL actuator motor harness connector.
3. Check the continuity between VVEL control module harness connector and VVEL actuator motor harness connector.





4. Also check harness for short to ground and power.
Is the inspection result normal?
YES - GO TO 4.
NO - GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F1, E3
- Harness for open or short between VVEL actuator motor and VVEL control module
- Repair open circuit, short to ground or short to power in harness or connectors.
4.CHECK VVEL ACTUATOR MOTOR
SEE Component Inspection (VVEL ACTUATOR MOTOR).
Is the inspection result normal?
YES - GO TO 6.
NO - GO TO 5.
5.REPLACE VVEL ACTUATOR SUB ASSEMBLY
1. Replace VVEL actuator sub assembly.
2. Go to SEE Special Repair Requirement.
- INSPECTION END
6.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
Is the inspection result normal?
YES - GO TO 7.
NO - Repair or replace.
7.REPLACE VVEL CONTROL MODULE
1. Replace VVEL control module. Engine Control System.
2. Go to Special Repair Requirement.
- GO TO 8.
8.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC Confirmation Procedure.
See SEE DTC Logic.
Is the DTC P1090 or P1093 displayed again?
YES - GO TO 9.
NO - INSPECTION END
9.CHECK VVEL ACTUATOR SUB ASSEMBLY
SEE Component Inspection (VVEL ACTUATOR SUB ASSEMBLY).
Is the inspection result normal?
YES - GO TO 11.
NO - GO TO 10.
10.REPLACE VVEL ACTUATOR SUB ASSEMBLY
1. Replace VVEL actuator sub assembly.
2. Go to SEE Special Repair Requirement.
- INSPECTION END
11.CHECK VVEL LADDER ASSEMBLY
Inspection.
Is the inspection result normal?
YES - GO TO 13.
NO - GO TO 12.
12.REPLACE CYLINDER HEAD, VVEL LADDER ASSEMBLY AND VVEL ACTUATOR SUB ASSEMBLY
1. Replace cylinder head ( Disassembly And Assembly), VVEL ladder assembly and VVEL actuator sub assembly.
2. Go to SEE Special Repair Requirement.
- INSPECTION END
13.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END




Component Inspection (VVEL ACTUATOR MOTOR)
1.CHECK VVEL ACTUATOR MOTOR
1. Turn ignition switch OFF.
2. Disconnect VVEL actuator motor harness connector.
3. Check resistance between VVEL actuator motor terminals as follows.





Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 2.
2.REPLACE VVEL ACTUATOR SUB ASSEMBLY
1. Replace VVEL actuator sub assembly.
2. Go to SEE Special Repair Requirement.
- INSPECTION END




Component Inspection (VVEL ACTUATOR SUB ASSEMBLY)
1.CHECK VVEL ACTUATOR SUB ASSEMBLY
1. Turn ignition switch OFF.
2. Remove VVEL actuator sub assembly. Disassembly And Assembly.
3. Turn the ball screw shaft to check that it works smoothly.
Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 2.
2.REPLACE VVEL ACTUATOR SUB ASSEMBLY
1. Replace VVEL actuator sub assembly.
2. Go to SEE Special Repair Requirement.
- INSPECTION END




Special Repair Requirement
1.PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT
Special Repair Requirement.
- GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Special Repair Requirement.
- END