Diagnosis Procedure

1. Turn ignition switch OFF.
2. Check the stop lamp when depressing and releasing the brake pedal.
   BRAKE PEDAL AND STOP LAMP REFERENCE CHART
   
   

   Brake pedal	Stop lamp
   Fully released	Not illuminated
   Slightly depressed	Illuminated

   Is the inspection result normal? 

   YES: GO TO  4.

   NO: GO TO 2.

1. Disconnect stop lamp switch harness connector.
2. Check the voltage between stop lamp switch harness connector and ground.
   TERMINAL VOLTAGE REFERENCE CHART
   
   

   Stop lamp switch		Ground	Voltage
   Connector	Terminal
   E110	3	Ground	Battery voltage

   Is the inspection result normal? 

   YES: GO TO  4.

   NO: GO TO 3.

Check the following.

• Fuse block (J/B) connector E103
• 10 A fuse (No. 7)
• Harness for open or short between stop lamp switch and battery

  Repair open circuit, short to ground or short to power in harness or connectors.

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.
   TERMINAL CONTINUITY REFERENCE CHART
   
   

   Stop lamp switch		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E110	4	M107	122	Existed

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.

Check the following.

• Fuse block (J/B) connector E103, M2
• Harness for open or short between ECM and stop lamp switch

  Repair open circuit, short to ground or short to power in harness or connectors.

Refer to "COMPONENT INSPECTION (STOP LAMP SWITCH) ".

Is the inspection result normal? 

YES: GO TO 7.

NO: Replace stop lamp switch.

Refer to "INTERMITTENT INCIDENT ".

INSPECTION END