Nissan Qashqai J11. Manual — part 339
![](/vehicles/gon/ffua/inoowhem/wavitha.png)
P1572 BRAKE PEDAL POSITION SWITCH
ECM-333
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
ECM
N
P
O
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
5.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-334, "Diagnosis Procedure"
.
NO
>> GO TO 4.
4.
PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
1.
Drive the vehicle and maintain the following condition for at least 5 seconds.
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-334, "Diagnosis Procedure"
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-41, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
5.
PERFORM COMPONENT FUNCTION CHECK
Without CONSULT
NOTE:
Use component function check to check the overall function of brake pedal position switch and stop lamp
switch circuit. During this check, a DTC might not be confirmed.
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals as per the following conditions.
Is the inspection result normal?
YES-1 >> To check malfunction symptom before repair: Refer to
GI-41, "Intermittent Incident"
YES-2 >> Confirmation after repair: INSPECTION END
Vehicle speed
More than 30 km/h (19 mph)
Selector lever
Except P or N position (CVT)
Except neutral position (M/T)
Vehicle speed
More than 30 km/h (19 mph)
Selector lever
Except P or N position (CVT)
Except neutral position (M/T)
Driving condition
Depress the brake pedal for more
than five seconds so as not to come
off from the above-mentioned vehicle
speed.
ECM
Condition
Voltage
(Approx.)
Connector
+
–
Terminal
E57
115
128
Brake pedal
Slightly depressed
Battery voltage
Fully released
0 V
116
Slightly depressed
0 V
Fully released
Battery voltage
![](/vehicles/gon/ffua/inoowhem/whar.png)
ECM-334
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P1572 BRAKE PEDAL POSITION SWITCH
NO
>> Proceed to
ECM-334, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010703026
1.
CHECK DTC PRIORITY
If DTC P1572 is displayed with DTC P0605, perform the trouble diagnosis for DTC P0605.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
NO
>> GO TO 2.
2.
CHECK BRAKE PEDAL POSITION SWITCH CIRCUIT
With CONSULT
1.
Turn ignition switch ON.
2.
Select “BRAKE SW1” in “DATA MONITOR” mode of “ENGINE” using CONSULT.
3.
Check “BRAKE SW1” 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.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 4.
3.
CHECK STOP LAMP SWITCH CIRCUIT
With CONSULT
1.
Select “BRAKE SW2” in “DATA MONITOR” mode of “ENGINE” using CONSULT.
2.
Check “BRAKE SW2” 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.
Monitor item
Condition
Indication
BRAKE SW1
Brake pedal
Slightly de-
pressed
OFF
Fully re-
leased
ON
ECM
Condition
Voltage
(Approx.)
Connector
+
–
Terminal
E57
116
128
Brake pedal
Slightly de-
pressed
0 V
Fully released
Battery voltage
Monitor item
Condition
Indication
BRAKE SW2
Brake pedal
Slightly de-
pressed
ON
Fully re-
leased
OFF
![](/vehicles/gon/ffua/inoowhem/lay.png)
P1572 BRAKE PEDAL POSITION SWITCH
ECM-335
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
ECM
N
P
O
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 7.
4.
CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect brake pedal position switch harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between brake pedal position switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Perform the trouble diagnosis for power supply circuit.
5.
CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT
1.
Disconnect ECM harness connector.
2.
Check the continuity between brake pedal position switch harness connector and ECM harness connec-
tor.
3.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace malfunctioning part.
6.
CHECK BRAKE PEDAL POSITION SWITCH
Check the brake pedal position switch. Refer to
ECM-336, "Component Inspection (Brake Pedal Position
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace brake pedal position switch. Refer to
BR-17, "Removal and Installation"
(LHD) or
(RHD).
7.
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.
ECM
Condition
Voltage
(Approx.)
Connector
+
–
Terminal
E57
115
128
Brake pedal
Slightly de-
pressed
Battery voltage
Fully released
0 V
+
−
Voltage
Brake pedal position switch
Connector
Terminal
E30
1
Ground
Battery voltage
+
−
Continuity
Brake pedal position switch
ECM
Connector
Terminal
Connector
Terminal
E30
2
E57
116
Existed
![](/vehicles/gon/ffua/inoowhem/uke.png)
ECM-336
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P1572 BRAKE PEDAL POSITION SWITCH
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Perform the trouble diagnosis for power supply circuit.
8.
CHECK STOP LAMP SWITCH 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 9.
NO
>> Repair or replace malfunctioning part.
9.
CHECK STOP LAMP SWITCH
Check the stop lamp switch. Refer to
ECM-337, "Component Inspection (Stop Lamp Switch)"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace stop lamp switch. Refer to
(RHD).
Component Inspection (Brake Pedal Position Switch)
INFOID:0000000010703027
1.
CHECK BRAKE PEDAL POSITION SWITCH-1
1.
Turn ignition switch OFF.
2.
Disconnect brake pedal position harness connector.
3.
Check the continuity between brake pedal position switch terminals as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK BRAKE PEDAL POSITION SWITCH-2
1.
Adjust brake pedal position switch installation. Refer to
BR-18, "Inspection and Adjustment"
(RHD).
2.
Check the continuity between brake pedal position switch terminals as per the following conditions.
+
−
Voltage
Stop lamp switch
Connector
Terminal
E50
1
Ground
Battery volatage
+
−
Continuity
Stop lamp switch
ECM
Connector
Terminal
Connector
Terminal
E50
2
E57
115
Existed
Terminals
Condition
Continuity
1 and 2
Brake pedal
Fully released
Existed
Slightly depressed
Not existed
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