Overall Function Check

Use this procedure to check the overall function of the ASCD brake switch circuit. During this check, a 1st trip DTC might not be confirmed.

WITHOUT CONSULT-II 

1. Turn ignition switch ON.
2. Check voltage between ECM terminal 108 (ASCD brake switch signal) and ground under the following conditions.
   Fig 1: Checking Voltage Between ECM Connector Terminal 108 & Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

   A/T models 

   ASCD BRAKE SWITCH CIRCUIT TEST CONDITIONS - A/T MODELS
   
   

   CONDITION	VOLTAGE
   Brake pedal: Slightly depressed	Approximately 0V
   Brake pedal: Fully released	Battery voltage

   M/T models 

   ASCD BRAKE SWITCH CIRCUIT TEST CONDITIONS - M/T MODELS
   
   

   CONDITION	VOLTAGE
   Clutch pedal and/or brake pedal: Slightly depressed	Approximately 0V
   Clutch pedal and brake pedal: Fully released	Battery voltage

3. If NG, go to "DIAGNOSTIC PROCEDURE ".

   If OK, go to next step.

4. Check voltage between ECM terminal 101 (Stop lamp switch signal) and ground under the following conditions.
   Fig 2: Checking Voltage Between ECM Connector Terminal 101 & Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   ASCD BRAKE SWITCH VOLTAGE TEST CONDITIONS
   
   

   CONDITION	VOLTAGE
   Brake pedal: Fully released	Approximately 0V
   Brake pedal: Slightly depressed	Battery voltage

5. If NG, go to "DIAGNOSTIC PROCEDURE ".