Nissan Altima L32. Manual - part 598

 

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Nissan Altima L32. Manual - part 598

 

 

ECM

EC-1513

< ECU DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

COOLING FAN

• Engine: After warming up, idle the 

engine

• Air conditioner switch: OFF

Engine coolant temperature: 97

°C 

(206

°F) or less

OFF

Engine coolant temperature: Between 
98

°C (208°F) and 99°C (210°F)

Low

Engine coolant temperature: Between 
100

°C (212°F) and 104°C (219°F)

Mid

Engine coolant temperature: 105

°C 

(221

°F) or more

Hi

HO2S2 HTR (B1)

• Engine speed: Below 3,600 rpm after the following conditions 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

ON

• Engine speed: Above 3,600 rpm

OFF

HO2S2 HTR (B2)

• Engine speed: Below 3,600 rpm after the following conditions 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

ON

• Engine speed: Above 3,600 rpm

OFF

VEHICLE SPEED

• Turn drive wheels and compare CONSULT-III value with the speedometer in-

dication.

Almost the same speed as 
the speedometer indication

IDL A/V LEARN

• Engine: Running

Idle air volume learning has not been per-
formed yet.

YET

Idle air volume learning has already been 
performed successfully.

CMPLT

ENG OIL TEMP

• Engine: After warming up

More than 70

°C (158°F)

TRVL AFTER MIL

• Ignition switch: ON

Vehicle has traveled after MIL has illumi-
nated.

0 - 65,535 km
(0 - 40,723 miles)

A/F S1 HTR (B1)

• Engine: After warming up, idle the engine

(More than 140 seconds after starting engine)

4 - 100%

A/F S1 HTR (B2)

• Engine: After warming up, idle the engine

(More than 140 seconds after starting engine)

4 - 100%

AC PRESS SEN

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

1.0 - 4.0 V

VHCL SPEED SE

• Turn drive wheels and compare CONSULT-III value with the speedometer in-

dication.

Almost the same speed as 
the speedometer indication

SET VHCL SPD

• Engine: Running

ASCD: Operating

The preset vehicle speed is 
displayed

MAIN SW

• Ignition switch: ON

MAIN switch: Pressed

ON

MAIN switch: Released

OFF

CANCEL SW

• Ignition switch: ON

CANCEL switch: Pressed

ON

CANCEL switch: Released

OFF

RESUME/ACC SW

• Ignition switch: ON

RESUME/ACCELERATE switch: 
Pressed

ON

RESUME/ACCELERATE switch: Re-
leased

OFF

SET SW

• Ignition switch: ON

SET/COAST switch: Pressed

ON

SET/COAST switch: Released

OFF

Monitor Item

Condition

Values/Status

EC-1514

< ECU DIAGNOSIS >

[VQ35DE]

ECM

*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 terminal voltage, confirm that the battery is fully charged. Refer to 

PG-3, "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.

• Pulse signal is measured by CONSULT-III.

BRAKE SW1
(ASCD brake switch)

• Ignition switch: ON

• Brake pedal: Fully released (CVT)
• Brake pedal and clutch pedal: Fully re-

leased (M/T)

ON

• Brake pedal: Slightly depressed (CVT)
• Brake pedal and clutch pedal: Slightly 

depressed (M/T)

OFF

BRAKE SW2
(Stop lamp switch)

• Ignition switch: ON

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

ON

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

ON 

→ OFF

SET LAMP

• MAIN switch: ON
• When vehicle speed is between 

40 km/h (25 MPH) and 144 km/h 
(89 MPH)

ASCD: Operating

ON

ASCD: Not operating

OFF

ALT DUTY

• Engine: Idle

0 - 80%

A/F ADJ-B1

• Engine: Running

−0.330 - 0.330

A/F ADJ-B2

• Engine: Running

−0.330 - 0.330

BAT CUR SEN

• Engine speed: Idle
• Battery: Fully charged*

2

• Selector lever position: P or N (CVT), neutral (M/T)
• Air conditioner switch: OFF
• No  load

Approx. 2,600 - 3,500 mV

ALT DUTY SIG

• Power generation voltage variable control: Operating

ON

• Power generation voltage variable control: Not operating

OFF

Monitor Item

Condition

Values/Status

PBIA9221J

ECM

EC-1515

< ECU DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Terminal No.

Description

Condition

Value

(Approx.)

+

-–

Signal  name

Input/

Output

1

(P/B)

112

(B)

Fuel injector No. 6

Output

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

NOTE:
The pulse cycle changes de-
pending on rpm at idle

BATTERY VOLTAGE
(11 - 14 V)

3

(L/W)

Fuel injector No. 5

29

(LG/R)

Fuel injector No. 4

30

(R/Y)

Fuel injector No. 3

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

BATTERY VOLTAGE
(11 - 14 V)

31

(R/W)

Fuel injector No. 2

32

(R/B)

Fuel injector No. 1

2

(G/W)

112

(B)

Throttle control motor power 
supply

Input

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14 V)

4

(BR/Y)

112

(B)

A/F sensor 1 heater
(bank 1)

Output

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

(More than 140 seconds after 
starting engine)

2.9 - 8.8 V

5

(L)

112

(B)

Throttle control motor (Open)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever position: D 

(CVT), 1st (M/T)

• Accelerator pedal: Fully de-

pressed

0 - 14 V

[Ignition switch: ON]
• Engine stopped
• Selector lever position: D 

(CVT), 1st (M/T)

• Accelerator pedal: Fully re-

leased

0 - 14 V

6

(P)

112

(B)

Throttle control motor (Close)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever position: D 

(CVT), 1st (M/T)

• Accelerator pedal: Fully re-

leased

0 - 14 V

JMBIA0047GB

JMBIA0048GB

JMBIA0902GB

JMBIA0031GB

JMBIA0032GB

JMBIA1125GB

EC-1516

< ECU DIAGNOSIS >

[VQ35DE]

ECM

8

(SB)

112

(B)

A/F sensor 1 heater (bank 2)

Output

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

(More than 140 seconds after 
starting engine)

2.9 - 8.8 V

9

(L/B)

112

(B)

Ignition signal No. 3

Output

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

NOTE:
The pulse cycle changes de-
pending on rpm at idle

0 - 0.2 V

10

(G/R)

Ignition signal No. 2

11

(Y/R)

Ignition signal No. 1

18

(GR/R)

Ignition signal No. 6

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

0.1 - 0.4 V

19

(P/W)

Ignition signal No. 5

21

(GR/W)

Ignition signal No. 4

12

(B)

—

ECM ground

—

—

—

13

(P/Y)

112

(B)

Heated oxygen sensor 2 heat-
er (bank 1)

Output

[Engine is running]
• Engine speed: Below 3,600 

rpm after the following condi-
tions are met

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

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

10 V

[Ignition switch: ON]
• Engine stopped
[Engine is running]
• Engine speed: Above 3,600 

rpm

BATTERY VOLTAGE
(11 - 14 V)

14

(B/R)

112

(B)

Fuel pump relay

Output

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

nition switch ON

[Engine is running]

0 - 1.5 V

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

ing ignition switch ON

BATTERY VOLTAGE
(11 - 14 V)

15

(O)

112

(B)

Throttle control motor relay

Output

[Ignition switch: ON 

→ OFF]

0 - 1.0 V
↓
BATTERY VOLTAGE (11 - 14 V)
↓
0 V

[Ignition switch: ON]

0 - 1.0 V

16

(B)

—

ECM ground

—

—

—

Terminal No.

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0030GB

JMBIA0035GB

JMBIA0036GB

JMBIA0902GB

 

 

 

 

 

 

 

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