Nissan March K13. Manual - part 192

P0643 SENSOR POWER SUPPLY

EC-229

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

C

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EC

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Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK CAMSHAFT POSITION SENSOR (PHASE) 

Check camshaft position sensor (PHASE). Refer to 

EC-202, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace camshaft position sensor (PHASE).

4.

CHECK THROTTLE POSITION SENSOR

Check throttle position sensor. Refer to 

EC-187, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace electric throttle control actuator.

5.

CHECK APP SENSOR

Check app sensor. Refer to 

EC-269, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace accelerator pedal assembly.

6.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-33, "Intermittent Incident"

.

>> Repair or replace malfunctioning part.

EC-230

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

P0850 PNP SWITCH

P0850 PNP SWITCH

Description

INFOID:0000000005989315

When the selector lever position is Neutral position, park/neutral position (PNP) signal is ON.

DTC Logic

INFOID:0000000005989316

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

INSPECTION START

Do you have CONSULT-III?

Do you have CONSULT-III?

YES

>> GO TO 2.

NO

>> GO TO 5.

2.

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.

>> GO TO 3.

3.

CHECK PNP SIGNAL FUNCTION

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “P/N POSI SW” in “DATA MONITOR” mode with CONSULT-III. Then check “P/N POSI SW” signal
under the following conditions.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Go to 

EC-231, "Diagnosis Procedure"

.

4.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Select “DATA MONITOR” mode with CONSULT-III.

2.

Start engine and warm it up to normal operating temperature.

3.

Maintain the following conditions for at least 50 consecutive seconds.

CAUTION:

Always drive vehicle at a safe speed.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0850

Park/neutral position 
signal

The park/neutral position (PNP) signal is not 
changed in the process of engine starting and 
driving.

• Harness or connectors

[The park/neutral position (PNP) signal 
circuit is open or shorted.]

• Park/neutral position (PNP) switch

Shift lever position

Known-good signal

Neutral position

ON

Except above position

OFF

ENG SPEED

 1,500 - 6,375 rpm

COOLAN TEMP/S

More than 70

°

C (158

°

F)

B/FUEL SCHDL

 3.0 - 31.8 msec

VHCL SPEED SE

More than 64 km/h (40 mph)

Shift lever

Suitable position

P0850 PNP SWITCH

EC-231

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

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4.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-231, "Diagnosis Procedure"

.

NO

>> INSPECTION END

5.

PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to 

EC-231, "Component Function Check"

.

NOTE:
Use component function check the overall function of the park/neutral position (PNP) signal circuit. During this
check, a 1st trip DTC might not be confirmed.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-231, "Diagnosis Procedure"

.

Component Function Check

INFOID:0000000005989317

1.

PERFORM COMPONENT FUNCTION CHECK

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-231, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005989318

1.

CHECK PARK/NEUTRAL POSITION (PNP) SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect PNP switch harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between PNP switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check harness for open or short between PNP switch and fuse.
Is the inspection result normal?

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

3.

CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between PNP switch harness connector and ECM harness connector.

ECM

Condition

Voltage

Connector

+

−

Terminal

Terminal

F8

69

(PNP signal)

108

Shift lever

Neutral

Battery voltage

Except above

Approx. 0 V

PNP switch

Ground

Voltage

Connector

Terminal

F22

2

Ground

Battery voltage

EC-232

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

P0850 PNP SWITCH

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 PNP SWITCH

Check pnp switch. Refer to 

TM-10, "PARK/NEUTRAL POSITION (PNP) SWITCH : Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace PNP switch. Refer to 

TM-14, "Removal and Installation"

.

5.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-33, "Intermittent Incident"

.

>> Repair or replace malfunctioning part.

PNP switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

F22

3

F16

69

Existed