P1805

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

NOTE:
Since this DTC is difficult to be confirmed, check component function to judge the normality.
- Proceed to "Component Function Check" .


Component Function Check


1. CHECK BRAKE SWITCH FUNCTION

With CONSULT
1.On the CONSULT screen, select "EV/HEV" - "DATA MONITOR" - "STOP LAMP SW".
2.Check "STOP LAMP SW" indication under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Proceed to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK STOP LAMP SWITCH OPERATION

1.Turn power switch OFF.
2.Check the stop lamp when depressing and releasing the brake pedal.





Is the inspection result normal?
YES- GO TO 5.
NO- GO TO 2.

2. CHECK STOP LAMP SWITCH POWER SUPPLY

1.Disconnect stop lamp switch harness connector.
2.Check the voltage between stop lamp switch harness connector and ground.





3.Also check harness for short to ground.
Is the inspection result normal?
YES- GO TO 4.
NO- GO TO 3.

3. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1.Pull out #38 fuse.
2.Check that the fuse is not fusing.
3.Check the continuity between stop lamp switch harness connector and fuse terminal.





4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- Check power supply circuit for 12V battery power supply.
NO- Repair or replace error-detected parts.

4. CHECK STOP LAMP SWITCH

Check stop lamp switch. Refer to "Component Inspection (Stop Lamp Switch)" .
Is the inspection result normal?
YES- GO TO 5.
NO- Replace stop lamp switch. Refer to "Exploded View" Exploded View.

5. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT

1.Disconnect stop lamp switch harness connector.
2.Disconnect VCM harness connector.
3.Check the continuity between stop lamp switch harness connector and VCM harness connector.





4.Also check harness for short to ground.
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace error-detected parts.


Component Inspection (Stop Lamp Switch)


1. CHECK STOP LAMP SWITCH-I

1.Turn ignition switch OFF.
2.Disconnect stop lamp switch harness connector.
3.Check the continuity between stop lamp switch terminals under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 2.

2. CHECK STOP LAMP SWITCH-II

1.Adjust stop lamp switch installation. Refer to "Inspection and Adjustment" Adjustments.
2.Check the continuity between stop lamp switch terminals under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace stop lamp switch. Refer to "Exploded View" Exploded View.