1.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
E109
1
Ground
Battery voltage
Is the inspection result normal?
YES
>>
GO TO 3
.
NO
>>
GO TO 2
.
2.DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector E103
10A 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.
3.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
E109
2
M107
117
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
.
4.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.
5.CHECK ASCD BRAKE SWITCH
Refer to
Component Inspection (ASCD Brake Switch) (GT-R certified NISSAN dealer)
.
Is the inspection result normal?
YES
>>
GO TO 6
.
NO
>>
Replace ASCD brake switch.
6.CHECK INTERMITTENT INCIDENT
Refer to
Intermittent Incident
.
>>
INSPECTION END