Diagnosis Procedure
- CHECK STOP LAMP SWITCH CIRCUIT
- Turn ignition switch OFF.
- Check for stop lamp illumination under the following conditions.
Condition Stop lamp Brake pedal Fully released Slightly depressed Illuminated Is the inspection result normal?
YES: GO TO 4.
NO: GO TO 2.
- CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
- Disconnect stop lamp switch harness connector.
- Check the voltage between stop lamp switch harness connector and ground.
Stop lamp switch Ground Voltage Connector terminal E115 1 Ground Battery voltage Is the inspection result normal?
YES: GO TO 4.
NO: GO TO 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.
- CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
- Disconnect stop lamp switch harness connector.
- Disconnect ECM harness connector.
- Check the continuity between stop lamp switch harness connector and ECM harness connector.
Stop lamp switch ECM Continuity Connector Terminal Connector terminal E115 2 E80 158 Existed - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 6.
NO: GO TO 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.
- CHECK STOP LAMP SWITCH
Refer to "COMPONENT INSPECTION (STOP LAMP SWITCH) ".
Is the inspection result normal?
YES: GO TO 7.
NO: Replace stop lamp switch. Refer to "REMOVAL AND INSTALLATION ".
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
: INSPECTION END