Nissan Murano Z51. Manual - part 604

EC-424

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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 >

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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 

EC-52, "System Diagram"

 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 

EC-425, "Diagnosis Procedure"

.

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

Refer to 

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

Refer to 

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

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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 

EC-52, "System Diagram"

 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 

EC-427, "Diagnosis Procedure"

.

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

Refer to 

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

Refer to 

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