For Mexico

P1805 BRAKE SWITCH

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

1.Turn ignition switch ON.
2.Fully depress the brake pedal for at least 5 seconds.
3.Erase the DTC.
4.Check 1st trip DTC.
Is 1st trip DTC detected?
YES- Go to .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK STOP LAMP SWITCH CIRCUIT

1.Turn ignition switch OFF.
2.Check for stop lamp illumination under the following conditions.





Is the inspection result normal?
YES- GO TO 4.
NO- GO TO 2.

2. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

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





Is the inspection result normal?
YES- GO TO 4.
NO- GO TO 3.

3. DETECT MALFUNCTIONING PART

Check the following.
- 10 A fuse (No. 7)
- Harness for open or short between stop lamp switch and battery
- Loose or poor connection for each connector and harness
- Repair open circuit, short to ground or short to power in harness or connectors.

4. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.Disconnect stop lamp switch harness connector.
2.Disconnect ECM harness connector.
3.Check the continuity between stop lamp switch 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 6.
NO- GO TO 5.

5. DETECT MALFUNCTIONING PART

Check the following.
- Harness for open or short between ECM and stop lamp switch
- Loose or poor connection for each connector and harness
- Repair open circuit, short to ground or short to power in harness or connectors.

6. CHECK STOP LAMP SWITCH

.
Is the inspection result normal?
YES- GO TO 7.
NO- Replace stop lamp switch. Removal And Installation.

7. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
- INSPECTION END


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. 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. Removal And Installation.