Qashqai J11. Engine control system (MR20DD) - part 21

 

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Qashqai J11. Engine control system (MR20DD) - part 21

 

 

ECM-322

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P1217 ENGINE OVER TEMPERATURE

Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
NOTE:
Use component function check to check the overall function of the
cooling fan. During this check, a DTC might not be confirmed. 
Is the coolant level in the reservoir tank and/or radiator below the
proper range?

YES

>> Proceed to 

ECM-322, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

PERFORM COMPONENT FUNCTION CHECK-2

Confirm whether customer filled the coolant or not.

Did customer fill the coolant?

YES

>> Proceed to 

ECM-322, "Diagnosis Procedure"

.

NO

>> GO TO 4.

4.

PERFORM COMPONENT FUNCTION CHECK-3

With CONSULT

1.

Turn ignition switch ON.

2.

Select “FAN DUTY CONTROL” in “ACTIVE TEST” mode of “ENGINE” using CONSULT. Refer to 

ECM-65,

"CONSULT Function"

.

3.

Check that cooling fan speed varies according to the percentage.

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
NO

>> Proceed to 

ECM-322, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010703013

1.

CHECK DTC PRIORITY

If DTC P1217 is displayed with DTC UXXXX or P0607, first perform the trouble diagnosis for DTC UXXXX or
P0607.
Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

ECM-93, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK COOLING FAN OPERATION

With CONSULT

1.

Turn ignition switch ON.

2.

Select “FAN DUTY CONTROL” in “ACTIVE TEST” mode of “ENGINE” using CONSULT. Refer to 

ECM-65,

"CONSULT Function"

.

3.

Check that cooling fan speed varies according to the percentage.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Proceed to 

ECM-396, "Diagnosis Procedure"

.

3.

CHECK COOLING SYSTEM FOR LEAK-1

Check cooling system for leak. (Refer to 

CO-38, "Inspection"

.)

Is leakage detected?

YES

>> GO TO 4.

NO

>> GO TO 5.

4.

CHECK COOLING SYSTEM FOR LEAK-2

Check the following for leak.
• Hose
• Radiator

SEF621W

P1217 ENGINE OVER TEMPERATURE

ECM-323

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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• Water pump

>> Repair or replace malfunctioning part.

5.

CHECK RADIATOR CAP

Check radiator cap. (Refer to 

CO-42, "Inspection"

)

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace radiator cap. Refer to 

CO-43, "Exploded View"

.

6.

CHECK THERMOSTAT

Check thermostat. (Refer to 

CO-52, "Inspection"

.)

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace thermostat. Refer to 

CO-51, "Removal and Installation"

.

7.

CHECK WATER CONTROL VALVE

Check water control valve. (Refer to 

CO-54, "Inspection"

.)

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace water control valve. Refer to 

CO-53, "Removal and Installation"

.

8.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

Check engine coolant temperature sensor. (Refer to  

ECM-187, "Component Inspection"

.)

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace engine coolant temperature sensor. Refer to 

CO-53, "Exploded View"

.

9.

OVERHEATING CAUSE ANALYSIS

If the cause cannot be isolated, check the 

CO-36, "Troubleshooting Chart"

.

>> INSPECTION END

ECM-324

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P1225 TP SENSOR

P1225 TP SENSOR

DTC Description

INFOID:0000000010703014

DTC DETECTION LOGIC

POSSIBLE CAUSE

Electric throttle control actuator (TP sensor 1 and 2)

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

Turn ignition switch ON.

4.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

ECM-324, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-41, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010703015

1.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1.

Turn ignition switch OFF.

2.

Remove the intake air duct. Refer to 

EM-147, "Removal and Installation"

.

3.

Check if foreign matter is caught between the throttle valve and the housing

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Remove the foreign matter and clean the electric throttle control actuator inside, then perform

throttle valve closed position learning. Refer to 

ECM-128, "Work Procedure"

.

2.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

Replace electric throttle control actuator. Refer to 

EM-149, "Removal and Installation"

.

>> INSPECTION END

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1225

CTP LEARNING-B1
(Closed throttle position learning bank 1)

Closed throttle position learning value is excessively low.

P1226 TP SENSOR

ECM-325

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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P1226 TP SENSOR

DTC Description

INFOID:0000000010703016

DTC DETECTION LOGIC

POSSIBLE CAUSE

Electric throttle control actuator (TP sensor 1 and 2)

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

Turn ignition switch ON.

4.

Repeat steps 2 and 3 for 32 times.

5.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

ECM-325, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-41, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010703017

1.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1.

Turn ignition switch OFF.

2.

Remove the intake air duct. Refer to 

EM-147, "Removal and Installation"

.

3.

Check if foreign matter is caught between the throttle valve and the housing

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Remove the foreign matter and clean the electric throttle control actuator inside, then perform

throttle valve closed position learning. Refer to 

ECM-128, "Work Procedure"

.

2.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

Replace electric throttle control actuator. Refer to 

EM-149, "Removal and Installation"

.

>> INSPECTION END

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1226

CTP LEARNING-B1
(Closed throttle position learning bank 1)

Closed throttle position learning is not performed successfully, repeatedly.

ECM-326

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P155D GENERATOR

P155D GENERATOR

DTC Description

INFOID:0000000010703018

DTC DETECTION LOGIC

POSSIBLE CAUSE

Generator

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted. always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine and let it idle at least 10 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

ECM-326, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-41, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010703019

1.

CHECK CHARGING SYSTEM

Perform trouble diagnosis for charging system. Refer to 

ECM-145, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace generator. Refer to 

CHG-52, "MR20DD : Exploded View"

.

NO

>> Repair or replace error-detected parts.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P155D

GENERATOR

• ECM receives mechanical malfunction signal sent from generator.
• ECM receives electrical malfunction signal sent from generator.

P1564 ASCD STEERING SWITCH

ECM-327

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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P1564 ASCD STEERING SWITCH

DTC Description

INFOID:0000000010703020

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (ASCD steering switch circuit is open or shorted.)
• ASCD steering switch
• ECM

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC PRIORITY

If DTC P1564 is displayed with DTC P0605, first 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.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 10 seconds.

2.

Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.

3.

Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.

4.

Press ACCEL/RES switch for at least 10 seconds, then release it and wait at least 10 seconds.

5.

Press COAST/SET switch for at least 10 seconds, then release it and wait at least 10 seconds.

6.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

ECM-327, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-41, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010703021

1.

CHECK DTC PRIORITY

If DTC P1564 is displayed with DTC P0605, first 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 ASCD STEERING SWITCH CIRCUIT

With CONSULT

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1564

ASCD SW
(ASCD switch)

ECM detects that input signal from the ASCD steering switch is out of the 
specified range.

ECM-328

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P1564 ASCD STEERING SWITCH

1.

Turn ignition switch ON.

2.

Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET SW” in “DATA MONITOR” mode of
“ENGINE” using CONSULT.

3.

Check each item indication as per the following conditions.

Without CONSULT

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 3.

3.

CHECK ASCD STEERING SWITCH GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Disconnect combination switch (spiral cable) harness connector.

4.

Check the continuity between combination switch (spiral cable) and ECM harness connector.

5.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace malfunctioning part.

4.

CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT

1.

Check the continuity between ECM harness connector and combination switch.

Monitor item

Condition

Indication

MAIN SW

MAIN switch

Pressed

ON

Released

OFF

CANCEL SW

CANCEL switch

Pressed

ON

Released

OFF

RESUME/ACC SW

ACCEL/RES switch

Pressed

ON

Released

OFF

SET SW

COAST/SET switch

Pressed

ON

Released

OFF

ECM

Condition

Voltage

(Approx.)

Connector

+

Terminal

E57

110

111

MAIN switch: Pressed

0 V

CANCEL switch: Pressed

1.0 V

COAST/SET switch: Pressed

2.0 V

ACCEL/RES switch: Pressed

3.0 V

All ASCD steering switches: Released

4.0 V

+

Continuity

Combination switch

(Spiral cable)

ECM

Connector

Terminal

Connector

Terminal

M66

28

E57

111

Existed

P1564 ASCD STEERING SWITCH

ECM-329

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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2.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace malfunctioning part.

5.

CHECK ASCD STEERING SWITCH

Check ASCD steering switch. Refer to 

ECM-329, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD steering switch. Refer to 

ST-8, "Removal and Installation"

.

Component Inspection

INFOID:0000000010703022

1.

CHECK ASCD STEERING SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect combination switch (spiral cable) harness connector.

3.

Check the resistance between combination switch harness connector terminals as per the following condi-
tions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD steering switch. Refer to 

ST-8, "Removal and Installation"

.

+

Continuity

Combination switch

(Spiral cable)

ECM

Connector

Terminal

Connector

Terminal

M66

27

E57

110

Existed

Combination switch

(Spiral cable)

Condition

Resistance

(Approx.)

Connector

+

Terminal

M303

8

9

MAIN switch: Pressed

CANCEL switch: Pressed

250 

COAST/SET switch: Pressed

660 

ACCEL/RES switch: Pressed

1,480 

All ASCD steering switches: Released

4,000 

ECM-330

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P1568 SIGNAL INVALID

P1568 SIGNAL INVALID

DTC Description

INFOID:0000000010703023

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Chassis control module
• ECM

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC PRIORITY

If DTC P1568 is displayed with DTC UXXXX, first perform the confirmation procedure for DTC UXXXX.

Is applicable DTC detected?

YES

>> Perform diagnosis for detected DTC. Refer to 

ECM-93, "DTC Index"

.

NO

>> GO TO 2.

2.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test. 
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 5 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

ECM-330, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010703024

1.

CHECK DTC PRIORITY

If DTC P1568 is displayed with DTC UXXXX, first perform the confirmation procedure for DTC UXXXX.
Is applicable DTC detected?

YES

>> Perform diagnosis for detected DTC. Refer to 

ECM-93, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK SELF-DIAGNOSTIC RESULT OF CHASSIS CONTROL MODULE

Check that the chassis control module does not detect any DTC.

Is any DTC detected?

YES

>> GO TO 3.

NO

>> Replace chassis control module. Refer to 

DAS-312, "Removal and Installation"

.

3.

REPLACE CHASSIS CONTROL MODULE

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1568

ICC COMMAND VALUE
(Intelligent cruise control command value)

ECM detects that a throttle valve opening angle request signal sent from 
chassis control module is difference from the specified value calculated by 
ECM.

P1568 SIGNAL INVALID

ECM-331

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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1.

Replace chassis control module. Refer to 

DAS-312, "Removal and Installation"

.

2.

Perform DTC Confirmation Procedure again.

Is DTC P1568 detected again?

YES

>> Replace ECM. Refer to 

ECM-416, "Removal and Installation"

.

NO

>> INSPECTION END

ECM-332

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P1572 BRAKE PEDAL POSITION SWITCH

P1572 BRAKE PEDAL POSITION SWITCH

DTC Description

INFOID:0000000010703025

DTC DETECTION LOGIC

NOTE:
This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not stored in ECM
memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed. 1st trip DTC is erased
when ignition switch OFF. And even when malfunction A is detected in two consecutive trips, DTC is not
stored in ECM memory.

POSSIBLE CAUSE

• Harness or connectors
- Stop lamp switch circuit is shorted.
- Brake pedal position switch circuit is shorted.
• Stop lamp switch
• Brake pedal position switch
• Incorrect stop lamp switch installation
• Incorrect brake pedal position switch installation
• ECM

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

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.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

NOTE:
Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for mal-
function B. By performing procedure for malfunction A, the incident that causes malfunction B can be
detected.

Will CONSULT be used?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

PERFORM DTC CONFIRMATION PROCEDURE-1

With CONSULT

1.

Start engine.

2.

Select “DATA MONITOR” mode of “ENGINE” using CONSULT.

3.

Press MAIN switch and make sure that CRUISE indicator is displayed in combination meter.

4.

Drive the vehicle for at least 5 consecutive seconds as per the following conditions.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P1572

ASCD BRAKE SW
(ASCD brake switch)

A

When the vehicle speed is above 30 km/h (19 MPH), ON signals from the 
stop lamp switch and the brake pedal position switch are sent to the ECM 
at the same time.

B

Brake pedal position switch signal is not sent to ECM for extremely long 
time while the vehicle is driving.

P1572 BRAKE PEDAL POSITION SWITCH

ECM-333

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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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

P1572 BRAKE PEDAL POSITION SWITCH

ECM-337

< 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

>> Replace brake pedal position switch. Refer to 

BR-17, "Removal and Installation"

 (LHD) 

BR-61,

"Removal and Installation"

 (RHD).

Component Inspection (Stop Lamp Switch)

INFOID:0000000010703028

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.

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-18, "Inspection and Adjustment"

 (LHD) 

BR-62, "Inspec-

tion and Adjustment"

 (RHD).

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. Refer to 

BR-17, "Removal and Installation"

 (LHD) 

BR-61, "Removal

and Installation"

 (RHD).

Brake pedal position switch

Condition

Continuity

+

Terminal

1

2

Brake pedal

Fully released

Existed

Slightly depressed

Not existed

Stop lamp switch

Condition

Continuity

+

Terminal

1

2

Brake pedal

Fully released

Not existed

Slightly depressed

Existed

Stop lamp switch

Condition

Continuity

+

Terminal

1

2

Brake pedal

Fully released

Not existed

Slightly depressed

Existed

 

 

 

 

 

 

 

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