Nissan Qashqai J11. Manual — part 423
ECK-252
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
P0488 EGR SYSTEM
LOW PRESSURE EGR VOLUME CONTROL VALVE
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace EGR volume control valve.
EGR volume control valve
Resistance (Approx.)
+
-
Terminal
5
6
1.69
Ω
P0504 STOP LAMP SWITCH
ECK-253
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
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P0504 STOP LAMP SWITCH
DTC Logic
INFOID:0000000010289842
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
• Turn ignition switch OFF and wait at least 10 seconds.
• Turn ESP switch OFF. (with ESP)
>> GO TO 2.
2.
DTC CONFIRMATION PROCEDURE
1.
Start the engine.
2.
Drive the vehicle at more than 5 km/h (3 MPH) for at least 5 seconds.
3.
Depress the brake pedal and keep vehicle speed more than 5 km/h (3 MPH) for at least 5 seconds.
NOTE:
For M/T models: Clutch pedal is released.
4.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECK-253, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010289843
1.
CHECK STOP LAMP SWITCH FUNCTION
With CONSULT
1.
Turn ignition switch ON.
2.
Select “BRAKE PEDAL” in “DATA MONITOR” mode of “ENGINE” using CONSULT.
3.
Check indication as per the following conditions.
Without CONSULT
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals as per the following.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC Detecting Condition
Possible Cause
P0504
BRAKE SWITCH SIGNAL CON-
SISTENCY
(Brake switch “A”/“B” correlation)
• 1.DEF: —
• 2.DEF: OFFSET IMPLAUSIBLE
• 3.DEF: IMPLAUSIBLE SIGNAL
ECM detects ON signals sent from the stop
lamp switch and the brake pedal position
switch at the same time.
• Harness or connectors
(The stop lamp switch circuit is open
or shorted.)
(The brake pedal position switch cir-
cuit is open or shorted.)
• Stop lamp switch
• Brake pedal position switch
• Incorrect stop lamp switch installa-
tion
• Incorrect brake pedal position
switch installation
• ECM
Monitor item
Condition
Indication
BRAKE PEDAL
Brake pedal
Slightly depressed
On
Fully released
Off
ECK-254
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
P0504 STOP LAMP SWITCH
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check the voltage between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Perform the trouble diagnosis for power supply circuit.
3.
CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT
1.
Disconnect ECM harness connector.
2.
Check the continuity between stop lamp switch harness connector and ECM harness connector.
3.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK STOP LAMP SWITCH
Check the stop lamp switch. Refer to
ECK-382, "Component Inspection"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> Replace stop lamp switch.
Component Inspection (Brake Pedal Position Switch)
INFOID:0000000010289844
1.
CHECK STOP LAMP SWITCH-1
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check the continuity between stop lamp switch terminals as per the following conditions.
ECM
Condition
Voltage
(Approx.)
Connector
+
–
Terminal
E59
17
25
Brake pedal
Slightly de-
pressed
Battery voltage
Fully released
0 V
+
−
Voltage
Stop lamp switch
Connector
Terminal
E50
3
Ground
Battery voltage
+
−
Continuity
Stop lamp switch
ECM
Connector
Terminal
Connector
Terminal
E50
4
E59
17
Existed
P0504 STOP LAMP SWITCH
ECK-255
< DTC/CIRCUIT DIAGNOSIS >
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Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK STOP LAMP SWITCH-2
1.
Adjust stop lamp switch installation. Refer to
BR-8, "Inspection and Adjustment"
(LHD models),
(RHD models).
2.
Check the continuity between stop lamp switch terminals as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace stop lamp switch.
Stop lamp switch
Condition
Continuity
+
-
Terminals
3
4
Brake pedal
Fully released
Not existed
Slightly de-
pressed
Existed
Stop lamp switch
Condition
Continuity
+
-
Terminals
3
4
Brake pedal
Fully released
Not existed
Slightly de-
pressed
Existed
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