Nissan Frontier D40. Manual - part 399

 

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Nissan Frontier D40. Manual - part 399

 

 

P0643 SENSOR POWER SUPPLY

EC-287

< COMPONENT DIAGNOSIS >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

NG

>> GO TO 6.

6.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1.

Replace accelerator pedal assembly.

2.

Perform 

EC-24, "Accelerator Pedal Released Position Learning"

.

3.

Perform 

EC-24, "Throttle Valve Closed Position Learning"

.

4.

Perform 

EC-24, "Idle Air Volume Learning"

.

>> INSPECTION END

7.

CHECK INTERMITTENT INCIDENT

 Refer to 

GI-46, "Intermittent Incident"

.

>> INSPECTION END

EC-288

< COMPONENT DIAGNOSIS >

[QR25DE]

P0850 PNP SWITCH

P0850 PNP SWITCH

Component Description

INFOID:0000000005273302

When the shift lever position is Neutral, park/neutral position (PNP) switch is ON. (M/T)
When the selector lever position is P or N, park/neutral position (PNP) signal is sent to ECM from TCM via
combination meter (unified meter control unit). (A/T)
ECM detects the position because the continuity of the line (the ON signal) exists.

On Board Diagnosis Logic

INFOID:0000000005273303

DTC Confirmation Procedure

INFOID:0000000005273304

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

 WITH CONSULT-III

1.

Turn ignition switch ON.

2.

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

If NG, go to 

EC-289, "Diagnosis Procedure"

.

If OK, go to following step.

3.

Select “DATA MONITOR” mode with CONSULT-III.

4.

Start engine and warm it up to normal operating temperature.

5.

Maintain the following conditions for at least 50 consecutive seconds.

6.

Check 1st trip DTC.

7.

If 1st trip DTC is detected, go to 

EC-289, "Diagnosis Procedure"

.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0850
0850

Park/neutral position 
switch

The signal of the park/neutral position (PNP) 
does not change during driving after the engine 
is started.

• Harness or connectors

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

• Park/neutral position (PNP) switch (M/T)
• Transmission range switch (A/T)
• Combination meter
• TCM  (A/T)

Position (Shift lever)

Known-good signal

P or N position (A/T)
Neutral position (M/T)

ON

Except the above position

OFF

ENG SPEED

More than 1,150 rpm (A/T)
More than 1,400 rpm (M/T)

COOLAN TEMP/S

More than 70

°

C (158

°

F)

B/FUEL SCHDL

2.0 - 31.8 msec 

VHCL SPEED SE

More than 64 km/h (40 MPH)

Shift lever

Suitable position

P0850 PNP SWITCH

EC-289

< COMPONENT DIAGNOSIS >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Overall Function Check

INFOID:0000000005273305

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

 WITH GST

1.

Turn ignition switch ON.

2.

Check voltage between ECM terminal 102 (PNP signal) and
ground under the following conditions.

3.

If NG, go to 

EC-289, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005273306

A/T MODELS

1.

CHECK DTC WITH TCM

Refer to

TM-233

 .

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace.

2.

CHECK STARTING SYSTEM

Turn ignition switch OFF, then turn it to START.
Does starter motor operate?

Yes or No

Yes

>> GO TO 3.

No

>> Refer to 

STR-5, "Work Flow"

.

3.

CHECK PNP INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I

1.

Turn ignition switch OFF.

2.

Disconnect A/T assembly harness connector.

3.

Disconnect combination meter harness connector.

4.

Check harness continuity between A/T assembly terminal 9 and combination meter terminal 17.
Refer to Wiring Diagram.

5.

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

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors M31, E152
• Harness for open or short between A/T assembly and combination meter.

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

5.

CHECK PNP INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II

1.

Disconnect ECM harness connector.

Condition (shift position)

Voltage (Known-good data)

P or N position (A/T)
Neutral position (M/T)

Approx. 0 (V)

Except the above position

 BATTERY VOLTAGE

(11 - 14V)

MBIB0043E

Continuity should exist.

EC-290

< COMPONENT DIAGNOSIS >

[QR25DE]

P0850 PNP SWITCH

2.

Check harness continuity between ECM terminal 102 and combination meter terminal 7.
Refer to Wiring Diagram.

3.

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

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E152, M31
• Harness for open or short between ECM and combination meter

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

7.

CHECK PNP INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-III

1.

Check harness continuity between A/T assembly terminal 9 and TCM terminal 8.

2.

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

OK or NG

OK

>> GO TO 8.

NG

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

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-46, "Intermittent Incident"

.

OK or NG

OK

>> GO TO 9.

NG

>> Repair or replace.

9.

REPLACE COMBINATION METER

Refer to 

MWI-4

.

>> INSPECTION END

M/T MODELS

1.

CHECK PNP SWITCH GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect PNP switch harness connector.

3.

Check harness continuity between PNP switch terminal 2 and ground.
Refer to Wiring Diagram.

4.

Also check harness for short to power.

OK or NG

OK

>> GO TO 3

NG

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors F14, E5
• Harness for open or short between PNP switch and ground

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

Continuity should exist.

Continuity should exist.

Continuity should exist.

 

 

 

 

 

 

 

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