Nissan Titan A60. Manual - part 420

 

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Nissan Titan A60. Manual - part 420

 

 

EC-346

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P0643 SENSOR POWER SUPPLY

NG

>> Repair or replace ground connections.

2.

CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT

1. Disconnect accelerator pedal position (APP) sensor harness

connector.

2. Turn ignition switch ON.

3. Check voltage between APP sensor terminal 7 and ground with

CONSULT-III or tester.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 3.

3.

CHECK SENSOR POWER SUPPLY CIRCUITS

Check harness for short to power and short to ground, between the following terminals

OK or NG

OK

>> GO TO 4.

NG

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

4.

CHECK COMPONENTS

Check the following.

• EVAP control system pressure sensor (Refer to 

EC-304, "Component Inspection"

.)

• Power steering pressure sensor (Refer to 

EC-339, "Component Inspection"

.)

• Battery current sensor (Refer to 

EC-374, "Component Inspection"

.)

• Refrigerant pressure sensor.
OK or NG

OK

>> GO TO 7.

NG

>> Replace malfunctioning components.

5.

CHECK ACCELERATOR PEEDAL POSITION SENSOR

Refer to 

EC-427, "Component Inspection"

.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

BBIA0361E

Voltage: Approximately 5V

JMBIA0601ZZ

ECM terminal

Sensor terminal

Reference Wiring Diagram

48

EVAP control system pressure sensor terminal 3

EC-83, "Wiring Diagram"

49

Refrigerant pressure sensor terminal 1

Battery current sensor terminal 1

68

Power steering pressure sensor terminal 1

90

APP sensor terminal 7

P0643 SENSOR POWER SUPPLY

EC-347

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

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6.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1.  Replace accelerator pedal position assembly.

2. Perform 

EC-119, "Accelerator Pedal Released Position Learning"

.

3. Perform 

EC-119, "Throttle Valve Closed Position Learning"

.

4. Perform 

EC-120, "Idle Air Volume Learning"

.

>> INSPECTION END

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-36, "How to Check Terminal"

 and 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

EC-348

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P0850 PNP SWITCH

P0850 PNP SWITCH

Component Description

INFOID:0000000006158796

When the gear position is P or N, transmission range switch is ON.

TCM detects the position because the continuity of the line (the ON signal) exists.

Then the TCM sends the PNP signal to the ECM via combination meter.

On Board Diagnosis Logic

INFOID:0000000006158797

DTC Confirmation Procedure

INFOID:0000000006158798

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step. 
1. Turn ignition swich OFF and wait at least 10 seconds.
2. Turn ignition swich ON.
3. Turn ignition swich OFF and wait at least 10 seconds.

 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-349, "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 60 consecutive seconds.

6. Check 1st trip DTC.

7. If 1st trip DTC is detected, go to 

EC-349, "Diagnosis Procedure"

.

Overall Function Check

INFOID:0000000006158799

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

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0850
0850

Park/neutral position 
switch

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.]

• Combination meter
• TCM

Position (Selector lever)

Known-good signal

N or P position

ON

Except the above position

OFF

ENG SPEED

1,000 - 6,375 rpm

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)

Selector lever

Suitable position

P0850 PNP SWITCH

EC-349

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

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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-349, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006158800

1.

CHECK DTC WITH TCM

 Refer to 

TM-34, "OBD-II Diagnostic Trouble Code (DTC)"

.

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-16, "Removal and Installation"

.

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 39.

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 F14, E5

• Harness connectors E152, M31

• Harness for open or short between A/T assembly and combination meter

>> Repair open circuit or 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.

2. Check harness continuity between ECM terminal 102 and combination meter terminal 40.

Refer to Wiring Diagram.

3. Also check harness for short to ground and short to power.
OK or NG

Condition (Gear position)

Voltage  (V) (Known good data)

P or N position

Approx. 0

Except the above position

BATTERY VOLTAGE

(11 - 14V)

MBIB0043E

Continuity should exist.

Continuity should exist.

 

 

 

 

 

 

 

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