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Nissan Sentra. Manual - part 346

EC-80

< ECU DIAGNOSIS INFORMATION >

[MRA8DE]

ECM

CANCEL SW

• Ignition switch: ON

CANCEL switch: Pressed

CANCEL switch: Released

Off

RESUME/ACC SW

• Ignition switch: ON

RESUME/ACCELERATE switch:
Pressed

RESUME/ACCELERATE switch: Re-
leased

Off

SET SW

• Ignition switch: ON

SET/COAST switch: Pressed

SET/COAST switch: Released

Off

BRAKE SW1

• Ignition switch: ON

Brake pedal: Fully released

Brake pedal: Slightly depressed

Off

BRAKE SW2

• Ignition switch: ON

Brake pedal: Fully released

Off

Brake pedal: Slightly depressed

VHCL SPD CUT

• Ignition switch: ON

Non

LO SPEED CUT

• Ignition switch: ON

Non

AT OD MONITOR

• Ignition switch: ON

Off

AT OD CANCEL

• Ignition switch: ON

Off

CRUISE LAMP

• Ignition switch: ON

MAIN switch: Pressed at the 1st time

→

at the 2nd time

→ Off

SET LAMP

NOTE:
The item is indicated, but not used.

—

ALT DUTY

• Engine speed: Idle

0 - 80%

BAT CUR SEN

• Engine speed: Idle
• Battery: Fully charged

• Selector lever: P or N (CVT)
• Shifter lever: Neutral (M/T)
• Air conditioner switch: OFF
• No load

Approx. 2,600 - 3,500 mV

A/F ADJ-B1

• Engine: running

–0.450 - 0.330

TUMBLE POS SEN

• Ignition switch: ON
• Engine coolant temperature: Be-

tween 0

°C (32°F) and 45°C

(113

°F)

Accelerator pedal: Fully released

Less than 2.4 V

Accelerator pedal: Fully depressed

More than 3.5 V

P/N POSI SW

• Ignition switch: ON

• Selector lever: P or N (CVT)
• Shifter lever: Neutral (M/T)

Selector lever: Except above

Off

INT/A TEMP SE

• Ignition switch: ON

Indicates intake air tempera-

ture

AC PRESS SEN

• Engine speed: Idle
• Both A/C switch and blower fan switch: ON (Compressor operates)

1.0 - 4.0 V

VTC DTY EX B1

• Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
• No load

Idle

0 - 2%

2,000 rpm

Approx. 0- 90%

EVAP LEAK DIAG

• Ignition switch: ON

Indicates the condition of

EVAP leak diagnosis.

EVAP DIAG READY

• Ignition switch: ON

Indicates the ready condition

of EVAP leak diagnosis.

BAT TEMP SEN

• Engine: After warming up, idle the engine
• Selector lever: P or N
• Air conditioner switch: OFF
• No load

Indicates the temperature

around the battery.

Monitor Item

Condition

Values/Status

ECM

EC-81

< ECU DIAGNOSIS INFORMATION >

[MRA8DE]

*1: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ
from ECM terminals voltage signal.
*2: Before measuring the voltage, confirm that the battery is fully charged. Refer to

PG-4, "How to Handle Battery"

TERMINAL LAYOUT

PHYSICAL VALUES

NOTE:

• ECM is located in the engine room left side near battery.

• Specification data are reference values and are measured between each terminal and ground.

• Pulse signal is measured by CONSULT.

THRTL STK CNT B1

NOTE:
The item is indicated, but not used.

—

A/F SEN1 DIAG1
(B1)

DTC P015A and P015B self-diagnosis is incomplete.

INCMP

DTC P015A and P015B self-diagnosis is complete.

CMPLT

A/F SEN1 DIAG2
(B1)

DTC P014C and P014D self-diagnosis is incomplete.

INCMP

DTC P014C and P014D self-diagnosis is complete.

CMPLT

A/F SEN1 DIAG3
(B1)

The vehicle condition is not within the diagnosis range of DTC P014C, P014D,
P015A or P015B.

ABSNT

The vehicle condition is within the diagnosis range of DTC P014C, P014D,
P015A or P015B.

PRSNT

HO2 S2 DIAG1 (B1)

DTC P0139 self-diagnosis (delayed response) is incomplete.

INCMP

DTC P0139 self-diagnosis (delayed response) is complete.

CMPLT

HO2 S2 DIAG2 (B1)

DTC P0139 self-diagnosis (slow response) is incomplete.

INCMP

DTC P0139 self-diagnosis (slow response) is complete.

CMPLT

EOP SENSOR

• Engine: After warming up
• Selector lever: P or N (CVT)
• Shifter lever: Neutral (M/T)
• Air conditioner switch: OFF
• No load

Idle

Approx. 1,450 mV

2,000 rpm

Approx. 2,850 mV

SPORT MODE
SWITCH

ignition switch: ON

Press the sport mode switch

Release the sport mode switch

Off

ECO MODE
SWITCH

ignition switch: ON

Press the ECO mode switch

Release the ECO mode switch

Off

A/F-S ATMSPHRC
CRCT B1

Engine: After warming up, idle the engine

Varies depending on vehicle
environment.

A/F-S ATMSPHRC
CRCT UP B1

Engine: Running

Varies depending on the
number of updates.

Monitor Item

Condition

Values/Status

JSBIA0505ZZ

EC-82

< ECU DIAGNOSIS INFORMATION >

[MRA8DE]

ECM

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

−

Signal name

Input/

Output

(P)

128

(B/Y)

Throttle control motor
(Close)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (CVT)
• Shifter lever: 1st (M/T)
• Accelerator pedal: Fully released

1.8 V

(G)

128

(B/Y)

Throttle control motor
power supply

Input

[Ignition switch: ON]

Battery voltage

(11 - 14 V)

(W)

128

(B/Y)

Throttle control motor
(Open)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (CVT)
• Shifter lever: 1st (M/T)
• Accelerator pedal: Fully depressed

3.2 V

(W)

(B)

Knock sensor

Input

[Engine is running]
• Idle speed

2.5 V

(G)

128

(B/Y)

Intake manifold tuning
valve motor (Close)

Output

[Ignition switch ON]
• Engine coolant temperature: Normal

operating condition

• Accelerator pedal: Depressed

→ ful-

ly released

Battery voltage appears for about

1 second.

(R)

128

(B/Y)

Intake manifold tuning
valve motor power supply

Input

[Ignition switch: ON]

Battery voltage

(11 - 14 V)

(R)

128

(B/Y)

Intake manifold tuning
valve motor (Open)

Output

[Ignition switch ON]
• Engine coolant temperature: normal

operating condition

• Accelerator pedal: Fully released

→

depressed

Battery voltage appears for about

1 second.

(B)

—

Sensor ground
(Knock sensor)

—

(BR)

(SB)

(O)

(V)

128

(B/Y)

Fuel injector No. 4
Fuel injector No. 3
Fuel injector No. 1
Fuel injector No. 2

Output

[Engine is running]
• Warm-up condition
• Idle speed

NOTE:
The pulse cycle changes depending
on rpm at idle

Battery voltage

(11 - 14 V)

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

Battery voltage

(11 - 14 V)

JMBIA0326GB

JMBIA0324GB

JSBIA3228ZZ

JMBIA0090GB

ECM

EC-83

< ECU DIAGNOSIS INFORMATION >

[MRA8DE]

(B)

—

ECM ground

—

(B)

—

ECM ground

—

(L)

128

(B/Y)

EVAP canister purge vol-
ume control solenoid
valve

Output

[Engine is running]
• Idle speed
• Accelerator pedal: Not depressed

even slightly, after engine starting

Battery voltage

(11 - 14 V)

[Engine is running]
• Engine speed: About 2,000 rpm

(More than 100 seconds after start-
ing engine.)

10 V

(GR)

128

(B/Y)

Fuel pump relay

Output

[Ignition switch: ON]
• For 1 second after turning ignition

switch ON

[Engine is running]

0 - 1.0 V

[Ignition switch: ON]
• More than 1 second after turning ig-

nition switch ON

Battery voltage

(11 - 14 V)

(Y)

128

(B/Y)

Throttle control motor re-
lay

Output

[Ignition switch: OFF]

Battery voltage

(11 - 14 V)

[Ignition switch: ON]

0 - 1.0 V

(W)

(BR)

Heated oxygen sensor 2

Input

[Engine is running]
• Revving engine from idle to 3,000

rpm quickly after the following condi-
tions are met

- Engine: after warming up
- Keeping the engine speed between

3,500 and 4,000 rpm for 1 minute
and at idle for 1 minute under no
load

0 - 1.0 V

(BR)

—

Sensor ground
(Heated oxygen sensor 2)

—

(Y)

(P)

Engine oil temperature
sensor

Input

[Engine is running]

0 - 4.8 V

Output voltage varies with engine

oil temperature.

(P)

—

Sensor ground
(Engine oil temperature
sensor)

—

(LG)

—

Sensor ground
(Engine coolant tempera-
ture sensor)

—

(V)

(LG)

Engine coolant tempera-
ture sensor

Input

[Engine is running]

0 - 4.8 V

Output voltage varies with engine

coolant temperature.

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

−

Signal name

Input/

Output

JMBIA0087GB

JMBIA0328GB

Content .. 344 345 346 347 ..