Diagnosis Procedure

1. INSPECTION START

   Check which type of transmission the vehicle is equipped with.

   Which type of transmission? 

   A/T: GO TO 2.

   M/T: GO TO 7.

2. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
   1. Turn ignition switch OFF.
   2. Disconnect ASCD brake switch harness connector.
   3. Turn ignition switch ON.
   4. Check the voltage between ASCD brake switch harness connector and ground.
   VOLTAGE REFERENCE
   
   

   ASCD brake switch		Ground	Voltage
   Connector	Terminal
   E109	1	Ground	Battery voltage

   Is the inspection result normal? 

   YES: GO TO 4.

   NO: GO TO 3.

3. DETECT MALFUNCTIONING PART

   Check the following.

   • Fuse block (J/B) connector E103
   • 10 A fuse (No. 3)
   • Harness for open or short between ASCD brake switch and fuse

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

4. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
   1. Turn ignition switch OFF.
   2. Disconnect ECM harness connector.
   3. Check the continuity between ASCD brake switch harness connector and ECM harness connector.
      CONTINUITY REFERENCE
      
      

      ASCD brake switch		ECM		Continuity
      Connector	Terminal	Connector	Terminal
      E109	2	M107	126	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.

5. DETECT MALFUNCTIONING PART

   Check the following.

   • Harness connectors E106, M6
   • Harness for open or short between ECM and ASCD brake switch

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

6. CHECK ASCD BRAKE SWITCH

   Refer to "COMPONENT INSPECTION (ASCD BRAKE SWITCH) "

   Is the inspection result normal? 

   YES: GO TO 15.

   NO: Replace ASCD brake switch.

7. CHECK ASCD BRAKE SWITCH CIRCUIT
   1. Turn ignition switch OFF.
   2. Disconnect ASCD brake switch harness connector.
   3. Turn ignition switch ON.
   4. Check the voltage between ASCD brake switch harness connector and ground.
   VOLTAGE REFERENCE
   
   

   ASCD brake switch		Ground	Condition		Voltage (V)
   Connector	Terminal
   E109	1	Ground	Brake pedal	Slightly depressed	Approx. 0
   				Fully released	Battery voltage

   Is the inspection result normal? 

   YES: GO TO 12.

   NO: GO TO 8.

8. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
   1. Turn ignition switch OFF.
   2. Disconnect ASCD clutch switch harness connector.
   3. Turn ignition switch ON.
   4. Check the voltage between ASCD clutch switch harness connector and ground.
   VOLTAGE REFERENCE
   
   

   ASCD clutch switch		Ground	Voltage
   Connector	Terminal
   E108	1	Ground	Battery voltage

   Is the inspection result normal? 

   YES: GO TO 10.

   NO: GO TO 9.

9. DETECT MALFUNCTIONING PART

   Check the following.

   • Fuse block (J/B) connector E103
   • 10A fuse (No. 3)
   • Harness for open or short between ASCD clutch switch and fuse

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

10. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Check the continuity between ASCD clutch switch harness connector and ASCD brake switch harness connector.
       CONTINUITY REFERENCE
       
       

       ASCD clutch switch		ASCD brake switch		Continuity
       Connector	Terminal	Connector	Terminal
       E108	2	E109	1	Existed

    3. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 11.

    NO: Repair open circuit, short to ground or short to power in harness or connectors.

11. CHECK ASCD CLUTCH SWITCH

    Refer to "COMPONENT INSPECTION (ASCD CLUTCH SWITCH) ".

    Is the inspection result normal? 

    YES: GO TO 15.

    NO: Replace ASCD clutch switch.

12. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between ASCD brake switch harness connector and ECM harness connector.
       CONTINUITY REFERENCE
       
       

       ASCD brake switch		ECM		Continuity
       Connector	Terminal	Connector	Terminal
       E109	1	M107	126	Existed

    4. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 14.

    NO: GO TO 13.

13. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E106, M6
    • Harness for open or short between ECM and ASCD brake switch

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

14. CHECK ASCD BRAKE SWITCH

    Refer to "COMPONENT INSPECTION (ASCD BRAKE SWITCH) ".

    Is the inspection result normal? 

    YES: GO TO 15.

    NO: Replace ASCD brake switch.

15. CHECK INTERMITTENT INCIDENT

Refer to "INTERMITTENT INCIDENT ".

INSPECTION END