P1089

P1089, P1092 VVEL CONTROL SHAFT POSITION SENSOR





DTC Logic

DTC DETECTION LOGIC

NOTE:
If DTC P1089 or P1092 is displayed with DTC P1608, first perform the trouble diagnosis for DTC P1608. P1608.






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 1 second.
2. 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 connection M95. Refer to Ground Inspection in Circuit Inspection.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace ground connection.
2.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 4.
NO - GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F40, E20
- 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.
4.CHECK VVEL CONTROL SHAFT POSITION SENSOR GROUND 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 6.
NO - GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F40, E20
- 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.
6.VVEL CONTROL SHAFT POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between VVEL control shaft position sensor harness connector and VVEL control module harness connector.





2. Also check harness for short to ground and power.
Is the inspection result normal?
YES - GO TO 8.
NO - GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F40, E20
- 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.
8.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
Is the inspection result normal?
YES - GO TO 9.
NO - Repair or replace.
9.REPLACE VVEL CONTROL MODULE
1. Replace VVEL control module.
2. Go to Work Procedure.
- GO TO 10.
10.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC Confirmation Procedure.
See SEE DTC Logic.
Is the DTC P1089 or P1092 displayed again?
YES - GO TO 11.
NO - INSPECTION END
11.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
Work Procedure.
- GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Work Procedure.
- END