Nissan March K13. Manual - part 250

 

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Nissan March K13. Manual - part 250

 

 

P1805 BRAKE SWITCH

EC-461

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

C

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P1805 BRAKE SWITCH

DTC Logic

INFOID:0000000006037381

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Fully depress the brake pedal for at least 5 seconds.

3.

Erase DTC.

4.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-461, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006037382

1.

CHECK STOP LAMP SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Check the stop lamp when depressing and releasing the brake pedal.

Is the inspection result normal?

YES

>> GO TO 4.

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 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check harness for open or short between stop lamp switch and battery.

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Disconnect stop lamp switch harness connector.

2.

Disconnect ECM harness connector.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1805

Brake switch

A brake switch signal is not sent to ECM 
for extremely long time while the vehicle is 
driving.

• Harness or connectors

(Stop lamp switch circuit is open or shorted.)

• Stop lamp switch

Brake pedal

Stop lamp

Fully released

Not illuminated

Slightly depressed

Illuminated

Stop lamp switch

Ground

Voltage

Connector

Terminal

E114

1

Ground

Battery voltage

EC-462

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

P1805 BRAKE SWITCH

3.

Check the continuity between ECM harness connector and stop lamp switch harness connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK STOP LAMP SWITCH

Check stop lamp switch. Refer to 

EC-462, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace brake pedal assembly. Refer to 

BR-16, "Exploded View"

.

6.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

XX-XX, "*****"

.

>> Repair or replace malfunctioning part.

Component Inspection

INFOID:0000000006037383

1.

CHECK STOP LAMP SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect stop lamp switch harness connector.

3.

Check the continuity between stop lamp switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK STOP LAMP SWITCH-II

1.

Adjust stop lamp switch installation. Refer to 

XX-XX, "*****"

.

2.

Check the continuity between stop lamp switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace brake pedal assembly. Refer to 

BR-16, "Exploded View"

.

ECM

Stop lamp switch

Continuity

Connector

Terminal

Connector

Terminal

E18

99

E114

2

Existed

Terminals

Condition

Continuity

1 and 2

Brake pedal

Fully released

Not existed

Slightly depressed

Existed

Terminals

Condition

Continuity

1 and 2

Brake pedal

Fully released

Not existed

Slightly depressed

Existed

P2122, P2123 APP SENSOR

EC-463

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

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P2122, P2123 APP SENSOR

DTC Logic

INFOID:0000000006037385

DTC DETECTION LOGIC

NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to 

EC-228, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
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.

Start engine and let it idle for 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC-463, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006037386

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to Ground Inspection in 

XX-XX, "*****"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT

1.

Disconnect accelerator pedal position (APP) sensor harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between APP sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

3.

CHECK APP SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2122

Accelerator pedal position 
sensor 1 circuit low input

An excessively low voltage from the APP 
sensor 1 is sent to ECM.

• Harness or connectors

(APP sensor 1 circuit is open or shorted.)

• Accelerator pedal position sensor

(APP sensor 1)

P2123

Accelerator pedal position 
sensor 1 circuit high input

An excessively high voltage from the APP 
sensor 1 is sent to ECM.

APP sensor

Ground

Voltage

Connector

Terminal

M206

4

Ground

Approx. 5 V

EC-464

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

P2122, P2123 APP SENSOR

3.

Check the continuity between APP sensor 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 or short to ground or short to power in harness or connectors.

4.

CHECK APP SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between APP sensor harness connector and ECM harness connector.

2.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK APP SENSOR

Refer to 

EC-464, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace accelerator pedal assembly. Refer to 

ACC-3, "Exploded View"

.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

XX-XX, "*****"

.

>> INSPECTION END

Component Inspection

INFOID:0000000006037387

1.

CHECK ACCELERATOR PEDAL POSITION SENSOR

1.

Reconnect all harness connectors disconnected.

2.

Turn ignition switch ON.

3.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace accelerator pedal assembly. Refer to 

ACC-3, "Exploded View"

.

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

M206

2

E16

111

Existed

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

M206

3

E16

110

Existed

ECM

Condition

Voltage

Connector

+

−

Terminal

Terminal

E16

110

(APP sensor 1 signal)

111

Accelerator 
pedal

Fully released

0.6 - 0.9 V

Fully depressed

3.9 - 4.7 V

103

(APP sensor 2 signal)

104

Fully released

0.3 - 0.6 V

Fully depressed

1.95 - 2.4 V

 

 

 

 

 

 

 

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