P0820
P0820 GEAR LEVER POSITION SENSOR
Description
Gear lever position sensor is installed in transmission and detects the gear position. When shift lever is shifted, position sensor magnet on striking rod in transmission moves and changes magnetic field of the coil in gear lever position sensor. Gear lever position sensor converts the changes in magnetic field to voltage signals and transmits them to ECM. ECM detects the gear position by these voltage signal changes.
DTC Logic
DTC DETECTION LOGIC
NOTE:
-If DTC P0820 is displayed with DTC P0335, P0340 or P0345, first perform the trouble diagnosis for
DTC P0335, P0340 or P0345. P0335 or P0340.
-If DTC P0820 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. P0500.
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 FOR MALFUNCTION A
1.Turn ignition switch ON and wait at least 5 seconds.
2.Check DTC.
Is DTC detected?
YES- Go to .
NO- GO TO 3.
3. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
1.Start engine.
2.Drive the vehicle in every gear position from 1st to 6th gear for 10 seconds each at 20 km/h or more.
NOTE:
Fully depress clutch pedal when shifting and fully release clutch pedal after gear shifting is complete.
CAUTION:
Always drive vehicle at a safe speed.
3.Check DTC.
Is DTC detected?
YES- Go to .
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 Regular Grade.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace ground connection.
2. CHECK GEAR LEVER POSITION SENSOR POWER SUPPLY CIRCUIT-I
1.Disconnect gear lever position sensor harness connector.
2.Turn ignition switch ON.
3.Check the voltage between gear lever position sensor harness connector and ground.
Is the inspection result normal?
YES- GO TO 8.
NO- GO TO 3.
3. CHECK GEAR LEVER POSITION SENSOR POWER SUPPLY CIRCUIT-II
1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between gear lever position sensor harness connector and ECM harness connector.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair open circuit.
4. CHECK GEAR LEVER POSITION SENSOR POWER SUPPLY CIRCUIT-III
Check harness for short to power and short to ground, between the following terminals.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair short to ground or short to power in harness or connectors.
5. CHECK COMPONENTS
Check the following.
- Crankshaft position sensor (POS) (P0335.)
- Brake booster pressure sensor (P0555.)
- EVAP control system pressure sensor (P0451.)
- Refrigerant pressure sensor (Without 7 Inch Display.)
Is the inspection result normal?
YES- GO TO 6.
NO- Replace malfunctioning component.
6. CHECK APP SENSOR
P2122.
Is the inspection result normal?
YES- GO TO 13.
NO- GO TO 7.
7. REPLACE ACCELERATOR PEDAL ASSEMBLY
Replace accelerator pedal assembly. Exploded View.
- INSPECTION END
8. CHECK GEAR LEVER POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between gear lever position sensor harness connector and ECM harness connector.
4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 9.
NO- Repair open circuit, short to ground or short to power in harness or connectors.
9. CHECK GEAR LEVER POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.Check the continuity between gear lever position sensor 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 10.
NO- Repair open circuit, short to ground or short to power in harness or connectors.
10. CHECK GEAR LEVER POSITION SENSOR
.
Is the inspection result normal?
YES- GO TO 12.
NO- GO TO 11.
11. REPLACE GEAR LEVER POSITION SENSOR
Replace gear lever position sensor. Exploded View.
- INSPECTION END
12. CHECK TRANSMISSION SHIFT CONTROL
Testing and Inspection.
Is the inspection result normal?
YES- GO TO 13.
NO- Repair or replace.
13. CHECK INTERMITTENT INCIDENT
Intermittent Incident Regular Grade.
- INSPECTION END
Component Inspection
1. CHECK GEAR LEVER POSITION SENSOR-I
1.Turn ignition switch OFF.
2.Disconnect gear lever position sensor harness connector.
3.Remove the sensor. Exploded View.
4.Visually check the sensor for chipping.
Is the inspection result normal?
YES- GO TO 2.
NO- GO TO 3.
2. CHECK GEAR LEVER POSITION SENSOR-II
Check resistance between gear lever position sensor terminals as per the following items.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 3.
3. REPLACE GEAR LEVER POSITION SENSOR
Replace gear lever position sensor. Exploded View.
- INSPECTION END