Diagnosis Procedure
Regarding Wiring Diagram information, refer to "WIRING DIAGRAM-ENGINE CONTROL SYSTEM- ".
- CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect ASCD brake switch harness connector.
- Turn ignition switch ON.
- Check the voltage between ASCD brake switch harness connector and ground.
ASCD brake switch Ground Voltage Connector Terminal E37 1 Ground Battery voltage Courtesy of NISSAN NORTH AMERICA, INC.
Is the inspection result normal?
YES: GO TO 3.
NO: GO TO 2.
- DETECT MALFUNCTIONING PART
Check the following.
- Fuse block (J/B) connector E6
- Junction block connectors E44, E46
- 10 A fuse (No. 3)
- Harness for open or short between ASCD brake switch and fuse
: Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between ASCD brake switch harness connector and ECM harness connector.
ASCD brake switch ECM Continuity Connector Terminal Connector Terminal E37 2 E10 110 Existed - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 5.
NO: GO TO 4.
- DETECT MALFUNCTIONING PART
Check the following.
- Junction block connectors E45, E46
- Harness for open or short between ASCD brake switch and ECM
: Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK ASCD BRAKE SWITCH
Refer to "COMPONENT INSPECTION (ASCD BRAKE SWITCH) ".
Is the inspection result normal?
YES: GO TO 6.
NO: Replace ASCD brake switch. Refer to "REMOVAL AND INSTALLATION ".
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
: INSPECTION END