M/T Models

CHECK OVERALL FUNCTION-I

With CONSULT-III

Turn ignition switch ON.
Select "BRAKE SW1" in "DATA MONITOR" mode with CONSULT-III.

Check "BRAKE SW1" indication under the following conditions.

CONDITION CHART

CONDITION	INDICATION
Brake pedal and/or clutch pedal: Slightly depressed	OFF
Brake pedal and clutch pedal: Fully released	ON

Without CONSULT-III

Turn ignition switch ON.

Check voltage between ECM terminal 126 and ground under the following conditions.

VOLTAGE SPECIFICATION

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

OK or NG

OK: INSPECTION END

NG: GO TO 2.

Fig 1: Checking Voltage Between ECM Terminal 126 And Ground

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

CHECK ASCD BRAKE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD clutch switch harness connector.
3. Turn ignition switch ON.
  
  Fig 2: Identifying ASCD Brake Switch And Clutch Pedal
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check voltage between ASCD clutch switch terminal 1 and ground with CONSULT-III or tester.
  Voltage: Battery voltage
  
  OK or NG
  
  OK: GO TO 7.
  
  NG: GO TO 3.
  
  Fig 3: Checking Voltage Between ASCD Clutch Switch Terminal 1 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Turn ignition switch ON.
  
  Fig 4: Identifying ASCD Brake Switch And Clutch Pedal
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check voltage between ASCD brake switch terminal 1 and ground with CONSULT-III or tester.
  Voltage: Battery voltage
  
  OK or NG
  
  OK: GO TO 5.
  
  NG: GO TO 4.
  
  Fig 5: Checking Voltage Between ASCD Brake Switch Terminal 1 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
DETECT MALFUNCTIONING PART
Check the following.
- Fuse block (J/B) connector E101
- 10A fuse
- Harness for open or short between ASCD brake switch and fuse
  Repair open circuit or short to ground or short to power in harness or connectors.
CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ASCD brake switch terminal 2 and ASCD clutch switch terminal 1.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist .
3. Also check harness for short to ground and short to power.
  OK or NG
  
  OK: GO TO 6.
  
  NG: Repair open circuit or short to ground or short to power in harness or connectors.
CHECK ASCD BRAKE SWITCH
Refer to "COMPONENT INSPECTION "

OK or NG

OK: GO TO 10.

NG: Replace ASCD brake switch.
CHECK ASCD CLUTCH SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ASCD clutch switch terminal 2 and ECM terminal 126.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist .
4. Also check harness for short to ground and short to power.
  OK or NG
  
  OK: GO TO 9.
  
  NG: GO TO 8.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E108, M15
- Harness for open or short between ECM and ASCD clutch switch
  Repair open circuit or short to ground or short to power in harness or connectors.
CHECK ASCD CLUTCH SWITCH
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 10.

NG: Replace ASCD clutch switch.
CHECK INTERMITTENT INCIDENT
Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

INSPECTION END