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Nissan Murano Z51. Manual - part 592
EC-376
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P1572 ASCD BRAKE SWITCH
2.
CHECK OVERALL FUNCTION-II
With CONSULT-III
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
Without CONSULT-III
Check the voltage between ECM harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> GO TO 7.
3.
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.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
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, short to ground or short to power in harness or connectors.
5.
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.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
Monitor item
Condition
Indication
BRAKE SW2
Brake pedal
Slightly depressed
ON
Fully released
OFF
ECM
Condition
Voltage
Connector
+
–
Terminal
Terminal
E16
106
(Stop lamp
switch signal)
112
Brake pedal
Slightly depressed
Battery voltage
Fully released
Approx. 0 V
ASCD brake switch
Ground
Voltage
Connector
Terminal
E49
1
Ground
Battery voltage
ASCD brake switch
ECM
Continuity
Connector
Terminal
Connector
Terminal
E49
2
E16
110
Existed