Nissan Titan A60. Instruction — part 450

EC-466

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

REFRIGERANT PRESSURE SENSOR

Refer to

EC-139, "Ground Inspection"

.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace ground connections.

3.

CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT

1. Disconnect refrigerant pressure sensor harness connector.

2. Turn ignition switch ON.

3. Check voltage between refrigerant pressure sensor terminal 1

and ground with CONSULT-III or tester.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E5, F14

• Harness for open or short between ECM and refrigerant pressure sensor

>> Repair harness or connectors.

5.

CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between refrigerant pressure sensor terminal 3 and ECM terminal 67.

Refer to Wiring Diagram.

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

OK

>> GO TO 7.

NG

>> GO TO 6.

BBIA0354E

BBIA0356E

Voltage: Approximately 5V

PBIB0188E

Continuity should exist.

REFRIGERANT PRESSURE SENSOR

EC-467

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

6.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E5, F14

• Harness for open or short between ECM and refrigerant pressure sensor

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

7.

CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check harness continuity between ECM terminal 70 and refrigerant pressure sensor terminal 2.

Refer to Wiring Diagram.

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

OK

>> GO TO 9.

NG

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E5, F14

• Harness for open or short between ECM and refrigerant pressure sensor

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

9.

CHECK INTERMITTENT INCIDENT

Refer to

GI-36, "How to Check Terminal"

and

GI-39, "Intermittent Incident"

.

OK or NG

OK

>> Replace refrigerant pressure sensor.

NG

>> Repair or replace.

Continuity should exist.

EC-468

< SYMPTOM DIAGNOSIS >

[VK56DE]

ENGINE CONTROL SYSTEM SYMPTOMS

SYMPTOM DIAGNOSIS

ENGINE CONTROL SYSTEM SYMPTOMS

Symptom Matrix Chart

INFOID:0000000006158950

SYSTEM — BASIC ENGINE CONTROL SYSTEM

SYMPTOM

Refer-
ence page

HARD/NO ST

AR

T

/REST

AR

T

(EXCP

.

H

A

)

ENGINE ST

ALL

HESIT

A

TION/SURGING/FLA

T

SPOT

SP

ARK KNOCK/DET

O

NA

TION

LACK

OF POWER/

POOR

ACC

E

LERA

TION

HIGH IDL

E/LOW

IDLE

ROUG

H IDLE/HUNTING

IDLI

NG VIBRA

TION

SLOW

/NO RETURN T

O

IDLE

OVERHEA

T

S/W

A

TER TEMPERA

T

UR

E

HIGH

EXCESS

IVE F

U

E

L CONSUMP

T

IO

N

EXCESS

IVE OIL CONSUMP

T

ION

BA

TTER

Y

DEAD (UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF AG AH

AJ

AK

AL

AM HA

Fuel

Fuel pump circuit

1

1

2

3

2

2

2

3

2

EC-361

,

EC-446

Fuel pressure regulator system

3

3

4

4

4

4

4

4

4

4

EC-473

Fuel injector circuit

1

1

2

3

2

2

2

2

EC-443

Evaporative emission system

3

3

4

4

4

4

4

4

4

4

EC-31

Air

Positive crankcase ventilation sys-
tem

3

3

4

4

4

4

4

4

4

4

1

EC-463

Incorrect idle speed adjustment

1

1

1

1

1

EC-110

Electric throttle control actuator

1

1

2

3

3

2

2

2

2

2

2

EC-402

,

EC-405

,

EC-409

,

EC-411

Ignition

Incorrect ignition timing adjustment

3

3

1

1

1

1

1

1

EC-110

Ignition circuit

1

1

2

2

2

2

2

2

EC-453

Main power supply and ground circuit

2

2

3

3

3

3

3

2

3

EC-136

ENGINE CONTROL SYSTEM SYMPTOMS

EC-469

< SYMPTOM DIAGNOSIS >

[VK56DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1 - 6: The numbers refer to the order of inspection.
(continued on next page)

SYSTEM — ENGINE MECHANICAL & OTHER

Mass air flow sensor circuit

1

1

2

2

2

2

2

2

EC-158

,

EC-162

Engine coolant temperature sensor circuit

3

3

3

EC-175

,

EC-183

Air fuel ratio (A/F) sensor 1 circuit

EC-191

,

EC-195

,

EC-198

,

EC-201

,

EC-428

Throttle position sensor circuit

2

2

EC-179

,

EC-243

,

EC-366

,

EC-368

,

EC-420

Accelerator pedal position sensor circuit

3

2

1

EC-345

,

EC-413

,

EC-416

,

EC-424

Knock sensor circuit

2

3

EC-254

Crankshaft position sensor (POS) circuit

2

2

EC-257

Camshaft position sensor (PHASE) circuit

3

2

EC-261

Vehicle speed signal circuit

2

3

3

3

EC-331

Power steering pressure sensor circuit

2

3

3

EC-337

ECM

2

2

3

3

3

3

3

3

3

3

3

EC-340

,

EC-342

Intake valve timing control solenoid valve cir-
cuit

3

2

1

3

2

2

3

3

EC-155

Park/neutral position (PNP) signal circuit

3

3

3

3

3

EC-348

Refrigerant pressure sensor circuit

2

3

3

4

EC-465

Electrical load signal circuit

3

EC-441

Air conditioner circuit

2

2

3

3

3

3

3

3

3

3

2

HAC-17

or

HAC-111

ABS actuator and electric unit (control unit)

4

BRC-24

SYMPTOM

Refer-
ence page

HARD/NO S

TA

R

T/RES

TA

R

T (E

XCP

. HA)

E

N

GINE

ST

ALL

HES

IT

A

TION/SURGING/FLA

T

SPOT

S

P

ARK KNOC

K

/DET

O

NA

TI

ON

LACK OF

POWER/POOR ACCELERA

TION

HIG

H

IDL

E

/L

OW

ID

LE

ROUGH IDLE/HUNTING

ID

LING VI

BRA

T

ION

S

LOW/NO RETU

RN

T

O ID

LE

OVERHEA

T

S

/W

A

TER TEMPERA

T

URE HIG

H

E

XCESSIVE

FUEL CON

S

UMP

T

ION

E

XCESSIVE

OIL

C

O

NSUMP

T

ION

B

A

TTER

Y

DEAD (UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF AG AH

AJ

AK

AL

AM HA