Nissan Murano Z51. Manual — part 604
EC-424
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P2A00, P2A03 A/F SENSOR 1
Perform
GI-39, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair or replace malfunctioning part.
10.
REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace malfunctioning air fuel ratio (A/F) sensor 1.
CAUTION:
• Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.
• Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant
(commercial service tool).
>> INSPECTION END
ASCD BRAKE SWITCH
EC-425
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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ASCD BRAKE SWITCH
Description
INFOID:0000000005536850
When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON.
ECM detects the state of the brake pedal by those two types of input (ON/OFF signal).
Refer to
for the ASCD function.
Component Function Check
INFOID:0000000005536851
1.
CHECK ASCD BRAKE SWITCH FUNCTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-III.
3.
Check “BRAKE SW1” indication under the following conditions.
Without CONSULT-III
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000005536852
1.
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 3.
NO
>> GO TO 2.
2.
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
Monitor item
Condition
Indication
BRAKE SW1
Brake pedal
Slightly depressed
OFF
Fully released
ON
ECM
Condition
Voltage
Connector
+
–
Terminal
Terminal
E16
110
(ASCD brake
switch signal)
112
Brake pedal
Slightly depressed
Approx. 0 V
Fully released
Battery voltage
ASCD brake switch
Ground
Voltage
Connector
Terminal
E49
1
Ground
Battery voltage
EC-426
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
ASCD BRAKE SWITCH
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
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?
YES
>> GO TO 4.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK ASCD BRAKE SWITCH
EC-426, "Component Inspection (ASCD Brake Switch)"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace ASCD brake switch.
5.
CHECK INTERMITTENT INCIDENT
GI-39, "Intermittent Incident"
>> INSPECTION END
Component Inspection (ASCD Brake Switch)
INFOID:0000000005536853
1.
CHECK ASCD BRAKE SWITCH-I
1.
Turn ignition switch OFF.
2.
Disconnect ASCD brake switch harness connector.
3.
Check the continuity between ASCD brake switch terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK ASCD BRAKE SWITCH-II
1.
Adjust ASCD brake switch installation. Refer to
BR-9, "Inspection and Adjustment"
.
2.
Check the continuity between ASCD brake switch terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace ASCD brake switch.
ASCD brake switch
ECM
Continuity
Connector
Terminal
Connector
Terminal
E49
2
E16
110
Existed
Terminals
Condition
Continuity
1 and 2
Brake pedal
Fully released
Existed
Slightly depressed
Not existed
Terminals
Condition
Continuity
1 and 2
Brake pedal
Fully released
Existed
Slightly depressed
Not existed
ASCD INDICATOR
EC-427
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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ASCD INDICATOR
Description
INFOID:0000000005536854
ASCD indicator lamp illuminates to indicate ASCD operation status. CRUISE is integrated in combination
meter.
CRUISE illuminates when MAIN switch on ASCD steering switch is turned ON to indicated that ASCD system
is ready for operation.
Refer to
for the ASCD function.
Component Function Check
INFOID:0000000005536855
1.
CHECK ASCD INDICATOR FUNCTION
Check ASCD indicator under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000005536856
1.
CHECK DTC
Check that DTC UXXXX is not displayed.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform trouble diagnosis for DTC UXXXX.
2.
CHECK COMBINATION METER FUNCTION
MWI-34, "CONSULT-III Function (METER/M&A)"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning part.
3.
CHECK INTERMITTENT INCIDENT
GI-39, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace combination meter.
NO
>> Repair or replace malfunctioning part.
ASCD INDICATOR
CONDITION
SPECIFICATION
CRUISE
• Ignition switch: ON
• MAIN switch: Pressed at the
1st time
→
at the 2nd time
ON
→
OFF
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