Nissan Sentra B18 (2020-2025) Service Manual: Reference Value

1¹

(LA/G)

Ground

Side turn signal lamp RH power supply

Output

Ignition switch ON

Turn signal lamp RH ON

Battery voltage

(Blinking : 0 V <–> battery voltage)

Turn signal lamp RH OFF

0 V

7

(LG)

Ground

Battery power supply

Input

Ignition switch OFF

Extended storage fuse switch pushed in

Battery voltage

Extended storage fuse switch pulled out

0 V

8

(GR)

Ground

Optical sensor signal

Input

Ignition switch ON

When bright outside of the Nissan Sentra vehicle

5 V

When dark outside of the Nissan Sentra vehicle

0 V

10

(R)

Ground

Front door lock assembly LH (door unlock sensor) signal

Input

Ignition switch ON

Front door LH door UNLOCK status (door unlock sensor ON)

0 V

Front door LH door LOCK status (door unlock sensor OFF)

Battery voltage

11

(SB)

Ground

Door lock/unlock switch LOCK signal

Input

Ignition switch ON

Door lock/unlock switch NEUTRAL position

Battery voltage

Door lock/unlock switch LOCK position

0 V

12

(LA/V)

Ground

Trunk lid opener switch signal

Input

Ignition switch ON

Trunk lid opener switch pressed

0 V

Trunk lid opener switch not pressed

Battery voltage

13

(W)

Ground

Hazard switch signal

Input

Ignition switch ON

Hazard switch pressed

0 V

Hazard switch not pressed

Battery voltage

14

(BR)

Ground

Door lock/unlock switch UNLOCK signal

Input

Ignition switch ON

Door lock/unlock switch NEUTRAL position

Battery voltage

Door lock/unlock switch UNLOCK position

0 V

17

(LA/G)

Ground

Front seat belt buckle switch LH signal

Input

Ignition switch ON

Front seat belt buckle switch LH ON

0 V

Front seat belt buckle switch LH OFF

Battery voltage

18²

(L)

Ground

Remote start relay control

Output

Normal engine run mode (brake pedal is depressed)

0 V

• Normal engine run mode (brake pedal is not depressed)

• Remote engine start run mode

Battery voltage

20³

(BR)

Ground

Start/stop off switch signal

Input

Ignition switch ON

Start/stop off switch not pressed

Battery voltage

Start/stop off switch pressed

0 V

21¹

(LA/SB)

Ground

Side turn signal lamp LH power supply

Output

Ignition switch ON

Turn signal lamp LH ON

Battery voltage

(Blinking : 0 V <–> battery voltage)

Turn signal lamp RH OFF

0 V

24

(LA/L)

Ground

LIN communication (power window)

Input/output

Ignition switch ON

26

(LA/L)

Ground

CAN-High

Input/Output

—

—

27

(LA/P)

Ground

CAN-Low

Input/Output

—

—

28

(Y)

Ground

Optical sensor power supply

Output

Ignition switch ON

4.65 – 5.5 V

29

(V)

Ground

Optical sensor ground

Output

Ignition switch OFF

0 V

30

(BG)

Ground

Trunk room lamp control

Output

Ignition switch ON

Trunk room lamp ON

0 V

Trunk room lamp OFF

Battery voltage

32

(G)

Ground

Power window relay control

Output

Ignition switch OFF (auto ACC status) or ON

0 V

Ignition switch OFF (retained power finished)

Battery voltage

33

(P)

Ground

Ignition relay-3 control

Output

Ignition switch ON

0 V

Ignition switch OFF

Battery voltage

34

(GR)

Ground

Accessory relay-1 control

Output

Ignition switch OFF (auto ACC status) or ON

0 V

Ignition switch OFF (not auto ACC status)

Battery voltage

37

(LG)

Ground

Room lamp relay control

Output

Interior room lamp battery saver is activated

Battery voltage

Interior room lamp battery saver is not activated

0 V

44⁴

(LG)

Ground

CVT shift selector (detent switch) signal

Input

Ignition switch ON

Shift selector P position

0 V

Shift selector any position other than P

Battery voltage

48

(SB)

Ground

Combination switch OUTPUT 1

Output

Ignition switch ON

All combination switches OFF

7.0 – 8.0V

INT volume 1

1.2V

Front washer switch

Front wiper LO

INT volume 2

Front wiper OFF

49

(BR)

Ground

Combination switch OUTPUT 2

Output

Ignition switch ON

All combination switches OFF

7.0 – 8.0V

High beam switch

1.2V

Front wiper HI

INT volume 3

Front wiper MIST

50

(Y)

Ground

Combination switch OUTPUT 5

Output

Ignition switch ON

All combination switches OFF

7.0 – 8.0V

Front fog switch

1.2V

Tail lamp switch

Turn signal RH

Light OFF switch

51

(L)

Ground

Combination switch OUTPUT 6

Output

Ignition switch ON

All combination switches OFF

7.0 – 8.0V

52

(V)

Ground

Combination switch OUTPUT 4

Output

Ignition switch ON

All combination switches OFF

7.0 – 8.0V

AUTO light switch

1.2V

Turn signal LH

53

(BG)

Ground

Combination switch OUTPUT 3

Output

Ignition switch ON

All combination switches OFF

7.0 – 8.0V

Passing switch

1.2V

Low beam switch

Front wiper INT

57⁴

(LA/P)

Ground

CVT shift selector (drive sport mode switch) signal

Input

Ignition switch ON

Drive sport mode switch pressed

0 V

Drive sport mode switch not pressed

Battery voltage

63

(GR)

Ground

Rear window defogger relay control

Output

Engine running

Rear window defogger activated

0 V

Rear window defogger not activated

Battery voltage

64⁴

(L)

Ground

CVT shift selector (detent switch) power supply

Output

Ignition switch OFF (auto ACC status) or ON

Battery voltage

Ignition switch OFF (not auto ACC status)

0 V

67

(P)

Ground

Combination switch INPUT 1

Input

Ignition switch ON

All combination switches OFF

0V

High beam switch

1.0V

Passing switch

Front fog switch

68

(W)

Ground

Combination switch INPUT 2

Input

Ignition switch ON

All combination switches OFF

0V

INT volume 1

1.0V

Low beam switch

AUTO light switch

Tail lamp switch

69

(G)

Ground

Combination switch INPUT 3

Input

Ignition switch ON

All combination switches OFF

0V

Front washer switch

1.0V

Turn signal LH

Turn signal RH

70

(GR)

Ground

Combination switch INPUT 4

Input

Ignition switch ON

All combination switches OFF

0V

Front wiper LO

1.0V

Front wiper HI

Front wiper INT

Light OFF switch

71

(LG)

Ground

Combination switch INPUT 5

Input

Ignition switch ON

All combination switches OFF

0V

INT volume 2

1.0V

INT volume 3

72

(R)

Ground

Combination switch INPUT 6

Input

Ignition switch ON

All combination switches OFF

0V

Front wiper OFF

1.0V

Front wiper MIST

80

(W)

Ground

ECO mode switch signal

Input

Ignition switch ON

ECO mode switch pressed

0 V

ECO mode switch not pressed

Battery voltage

81

(LA/G)

Ground

Front door switch LH signal

Input

Ignition switch ON

Front door switch LH ON (when door is opened)

0 V

Front door switch LH OFF (when door is closed)

Battery voltage

93

(BR)

Ground

Front door switch RH signal

Input

Ignition switch ON

Front door switch RH ON (when door is opened)

0 V

Front door switch RH OFF (when door is closed)

Battery voltage

94

(Y)

Ground

Rear door switch LH signal

Input

Ignition switch ON

Rear door switch LH ON (when door is opened)

0 V

Rear door switch LH OFF (when door is closed)

Battery voltage

95

(V)

Ground

Rear door switch RH signal

Input

Ignition switch ON

Rear door switch RH ON (when door is opened)

0 V

Rear door switch RH OFF (when door is closed)

Battery voltage

96

(W)

Ground

Trunk lid opener assembly (ajar switch) signal

Input

Ignition switch ON

Trunk lid opener assembly (ajar switch) ON (when trunk lid opened)

0 V

Trunk lid opener assembly (ajar switch) OFF (when trunk lid closed)

Battery voltage

98⁵

(LA/P)

Ground

Trunk opener request switch signal

Input

Ignition switch ON

Trunk opener request switch pressed

0 V

Trunk opener request switch not pressed

Battery voltage

105

(P)

Ground

Ignition relay-2 control

Output

Ignition switch ON

0 V

Ignition switch OFF

Battery voltage

110

(LA/G)

Ground

Stop lamp switch signal

Input

Ignition switch ON

Stop lamp switch ON (brake pedal is depressed)

Battery voltage

Stop lamp switch OFF (brake pedal is not depressed)

0 V

111

(LA/V)

Ground

Brake pedal position switch signal

Input

Ignition switch ON

Brake pedal position switch ON (brake pedal is not depressed)

Battery voltage

Brake pedal position switch OFF (brake pedal is depressed)

0 V

112⁶

(LG)

Ground

Clutch master cylinder (clutch switch) END signal

Input

Ignition switch ON

ON (clutch pedal is full depressed)

1 V

OFF (clutch pedal is not depressed)

0 V

113⁶

(BR)

Ground

Clutch master cylinder (clutch switch) START signal

Input

Ignition switch ON

ON (clutch pedal is not depressed)

1 V

OFF (clutch pedal is depressed)

0 V

116

(LA/Y)

Ground

Front turn signal lamp RH power supply

Output

Ignition switch ON

Turn signal lamp RH ON

Battery voltage

(Blinking : 0 V <–> battery voltage)

Turn signal lamp RH OFF

0 V

123

(W)

Ground

Starter cut relay control

Output

Starter motor at engine cranking

0 V

Starter motor other than above

Battery voltage

128

(LA/SB)

Ground

Front turn signal lamp LH power supply

Output

Ignition switch ON

Turn signal lamp LH ON

Battery voltage

(Blinking : 0 V <–> battery voltage)

Turn signal lamp LH OFF

0 V

129

(B)

Ground

Ground

—

Ignition switch OFF

0 V

130

(P)

Ground

Interior room lamp control

Output

Ignition switch ON

Any doors opens [map lamp and rear personal lamp (door position) are turned ON]

0 – 1 V

When all doors are closed [map lamp and rear personal lamp (door position) are turned OFF]

Battery voltage

132

(LA/BR)

Ground

Front door RH UNLOCK control

Output

Ignition switch ON

Front door RH UNLOCK (actuator is activated)

Battery voltage

Front door RH other than UNLOCK (actuator is not activated)

0 V

133

(G)

Ground

Battery power supply

Input

Ignition switch OFF

Battery voltage

134

(LA/GR)

Ground

Front door LH UNLOCK control

Output

Ignition switch ON

Front door LH UNLOCK (actuator is activated)

Battery voltage

Front door LH other than UNLOCK (actuator is not activated)

0 V

135

(V)

Ground

Battery power supply (door lock 1)

Input

Ignition switch OFF

Battery voltage

136

(L)

Ground

Battery power supply (turn signal lamp)

Input

Ignition switch OFF

Battery voltage

137

(B)

Ground

Ground

—

Ignition switch OFF

0 V

138

(LG)

Ground

Battery power supply (rear wiper)

Input

Ignition switch OFF

Battery voltage

139

(GR)

Ground

Battery power supply (stop lamp)

Input

Ignition switch OFF

Battery voltage

142

(W)

Ground

Front door LOCK control

Output

Ignition switch ON

Front doors LOCK (actuator is activated)

Battery voltage

Front doors other than LOCK (actuator is not activated)

0 V

144

(R)

Ground

Battery power supply (door lock 2)

Input

Ignition switch OFF

Battery voltage

145

(LA/Y)

Ground

Trunk lid opener assembly control

Output

Ignition switch ON

Trunk lid opener switch pressed (actuator is activated)

Battery voltage

Trunk lid opener switch not pressed (actuator is not activated)

0 – 0.5 V

151

(LA/SB)

Ground

Rear turn signal lamp LH power supply

Output

Ignition switch ON

Turn signal lamp LH ON

Battery voltage

(Blinking : 0 V <–> battery voltage)

Turn signal lamp LH OFF

0 V

154

(W)

Ground

Rear door LOCK control

Output

Ignition switch ON

Rear door LOCK (actuator is activated)

Battery voltage

Rear door other than LOCK (actuator is not activated)

0 V

155

(LA/GR)

Ground

Rear door UNLOCK control

Output

Ignition switch ON

Rear door UNLOCK (actuator is activated)

Battery voltage

Rear door other than UNLOCK (actuator is not activated)

0 V

157

(LA/LG)

Ground

Stop lamp RH power supply

Output

Ignition switch ON

Brake pedal depressed

Battery voltage

Brake pedal not depressed

0 V

159

(LA/G)

Ground

Rear turn signal lamp RH power supply

Output

Ignition switch ON

Turn signal lamp RH ON

Battery voltage

(Blinking : 0 V <–> battery voltage)

Turn signal lamp RH OFF

0 V

160

(LA/BR)

Ground

Stop lamp LH and high-mounted stop lamp power supply

Output

Ignition switch ON

Brake pedal depressed

Battery voltage

Brake pedal not depressed

0 V