Nissan Sentra. Instruction — part 639

MWI-2

DIAGNOSIS AND REPAIR WORKFLOW . . .

45

Work flow . . . . . . . . . . . . . . . ....

45

DTC/CIRCUIT DIAGNOSIS . . . . . . .

47

U1000 CAN COMM CIRCUIT . . . . . . .

47

DTC Logic . . . . . . . . . . . . . . . ...

47

Diagnosis Procedure . . . . . . . . . . . .

47

U1010 CONTROL UNIT (CAN) . . . . . . .

48

Description . . . . . . . . . . . . . . . ..

48

DTC Logic . . . . . . . . . . . . . . . ...

48

Diagnosis Procedure . . . . . . . . . . . ..

48

B2205 VEHICLE SPEED . . . . . . . . ...

49

Description . . . . . . . . . . . . . . . ..

49

DTC Logic . . . . . . . . . . . . . . . ...

49

Diagnosis Procedure . . . . . . . . . . . .

49

B2267 ENGINE SPEED . . . . . . . . . .

50

Description . . . . . . . . . . . . . . . ..

50

DTC Logic . . . . . . . . . . . . . . . ...

50

Diagnosis Procedure . . . . . . . . . . . ..

50

B2268 WATER TEMP . . . . . . . . . .

51

Description . . . . . . . . . . . . . . . ..

51

DTC Logic . . . . . . . . . . . . . . . ...

51

Diagnosis Procedure . . . . . . . . . . . ..

51

POWER SUPPLY AND GROUND CIRCUIT . .

52

COMBINATION METER . . . . . . . . . . ...

52

COMBINATION METER : Diagnosis Procedure ....

52

BCM (BODY CONTROL SYSTEM) (WITH INTEL-
LIGENT KEY SYSTEM) . . . . . . . . . . ....

52

BCM (BODY CONTROL SYSTEM) (WITH INTEL-
LIGENT KEY SYSTEM) : Diagnosis Procedure . .

52

BCM (BODY CONTROL SYSTEM) (WITHOUT IN-
TELLIGENT KEY SYSTEM) . . . . . . . . . .

53

BCM (BODY CONTROL SYSTEM) (WITHOUT
INTELLIGENT KEY SYSTEM) : Diagnosis Proce-
dure . . . . . . . . . . . . . . . . . ....

53

STEERING SWITCH (METER CONTROL
SWITCH) SIGNAL CIRCUIT . . . . . . . ..

55

Diagnosis Procedure . . . . . . . . . . . ..

55

Component Inspection . . . . . . . . . . ....

55

ILLUMINATION CONTROL SWITCH SIGNAL
CIRCUIT . . . . . . . . . . . . . . . .

56

Diagnosis Procedure . . . . . . . . . . . ..

56

Component Inspection . . . . . . . . . . ....

56

FUEL LEVEL SENSOR SIGNAL CIRCUIT . ...

58

Description . . . . . . . . . . . . . . . ..

58

Component Function Check . . . . . . . . ...

58

Diagnosis Procedure . . . . . . . . . . . .

58

Component Inspection . . . . . . . . . . ....

59

PARKING BRAKE SWITCH SIGNAL CIR-
CUIT . . . . . . . . . . . . . . . . ...

60

Component Function Check . . . . . . . . ...

60

Diagnosis Procedure . . . . . . . . . . . ...

60

Component Inspection . . . . . . . . . . .

61

AMBIENT SENSOR SIGNAL CIRCUIT . . .

62

Description . . . . . . . . . . . . . . . ..

62

Diagnosis Procedure . . . . . . . . . . . ..

62

Component Inspection . . . . . . . . . . .

62

A/C AUTO AMP. CONNECTION RECOGNI-
TION SIGNAL CIRCUIT . . . . . . . . .

64

Description . . . . . . . . . . . . . . . ..

64

Diagnosis Procedure (With Instruction A/C) . . . .

64

WASHER FLUID LEVEL SWITCH CIRCUIT .

65

Description . . . . . . . . . . . . . . . ..

65

Diagnosis Procedure . . . . . . . . . . . ...

65

Component Inspection . . . . . . . . . . .

65

SYMPTOM DIAGNOSIS . . . . . . .

67

THE FUEL GAUGE INDICATOR DOES NOT
OPERATE . . . . . . . . . . . . . . ..

67

Description . . . . . . . . . . . . . . . ..

67

Diagnosis Procedure . . . . . . . . . . . ...

67

THE STEERING SWITCH (METER CON-
TROL SWITCH) IS INOPERATIVE . . . . ...

68

Description . . . . . . . . . . . . . . . ..

68

Diagnosis Procedure . . . . . . . . . . . ...

68

THE ILLUMINATION CONTROL SWITCH IS
INOPERATIVE . . . . . . . . . . . . ...

69

Description . . . . . . . . . . . . . . . ..

69

Diagnosis Procedure . . . . . . . . . . . ...

69

THE OIL PRESSURE WARNING LAMP
DOES NOT TURN ON . . . . . . . . . ...

70

Description . . . . . . . . . . . . . . . ..

70

Diagnosis Procedure . . . . . . . . . . . ...

70

THE OIL PRESSURE WARNING LAMP
DOES NOT TURN OFF . . . . . . . . . .

71

Description . . . . . . . . . . . . . . . ..

71

Diagnosis Procedure . . . . . . . . . . . ...

71

THE DOOR OPEN WARNING CONTINUES
DISPLAYING, OR DOES NOT DISPLAY . . .

72

Description . . . . . . . . . . . . . . . ..

72

Diagnosis Procedure . . . . . . . . . . . ...

72

THE PARKING BRAKE RELEASE WARNING
CONTINUES DISPLAYING, OR DOES NOT
DISPLAY . . . . . . . . . . . . . . .

73

Description . . . . . . . . . . . . . . . ..

73

Diagnosis Procedure . . . . . . . . . . . ...

73

THE AMBIENT TEMPERATURE DISPLAY IS
INCORRECT . . . . . . . . . . . . . ..

74

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Description . . . . . . . . . . . . . . . ..

74

Diagnosis Procedure . . . . . . . . . . . ...

74

THE LOW WASHER FLUID WARNING LAMP
DOES NOT TURN ON OR OFF . . . . . . .

75

Description . . . . . . . . . . . . . . . ..

75

Diagnosis Procedure . . . . . . . . . . . ...

75

NORMAL OPERATING CONDITION . . . . .

76

COMPASS . . . . . . . . . . . . . . . . .

76

COMPASS : Description . . . . . . . . . . .

76

REMOVAL AND INSTALLATION . . . ...

77

COMBINATION METER . . . . . . . . ...

77

Exploded View . . . . . . . . . . . . . . .

77

Removal and Installation . . . . . . . . . . .

77

Disassembly and Assembly . . . . . . . . . .

77

STEERING SWITCH . . . . . . . . . . .

79

Removal and Installation . . . . . . . . . . .

79

ILLUMINATION CONTROL SWITCH . . . ...

80

Removal and Installation . . . . . . . . . . .

80

MWI-4

< PRECAUTION >

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

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The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along

with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain

types of collision. Information necessary to service the system safely is included in the SR and SB section of

this Instruction.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by

an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag

Module, see the SR section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Instruction. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-

ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-

tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a

hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing

serious injury.

• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the

battery and wait at least three minutes before performing any service.

MWI

COMPONENT PARTS

MWI-5

< SYSTEM DESCRIPTION >

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SYSTEM DESCRIPTION

COMPONENT PARTS

METER SYSTEM
METER SYSTEM : Component Parts Location

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