Nissan Qashqai J11. Manual - part 339

 

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Nissan Qashqai J11. Manual - part 339

 

 

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

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 

ECM-299, "DTC Description"

.

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

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

Switch)"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace brake pedal position switch. Refer to 

BR-17, "Removal and Installation"

(LHD) or 

BR-61,

"Removal and Installation"

(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

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 

BR-17, "Exploded View"

 (LHD) or 

BR-61, "Exploded View"

(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"

 (LHD) 

BR-62,

"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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