Infiniti EX35. Manual - part 928

 

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Infiniti EX35. Manual - part 928

 

 

HAC-108

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

ECM

FUEL PUMP RLY

• For 1 seconds after turning ignition switch: ON
• Engine running or cranking

ON

• Except above

OFF

VENT CONT/V

• Ignition switch: ON

OFF

THRTL RELAY

• Ignition switch: ON

ON

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

I/P PULLY SPD

• Vehicle speed: More than 20 km/h (12 MPH)

Almost the same speed as 
the tachometer indication

VEHICLE SPEED

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

cation.

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

SNOW MODE SW

• Ignition switch: ON

Snow mode switch: ON

ON

Snow mode switch: OFF

OFF

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 turned 
ON.

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 - 4.0V

VHCL SPEED SE

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

cation.

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

BRAKE SW1
(ICC/ASCD brake 
switch)

• Ignition switch: ON

Brake pedal: Fully released

ON

Brake pedal: Slightly depressed

OFF

Monitor Item

Condition

Values/Status

ECM

HAC-109

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

*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 behind the instrument assist lower panel. For this inspection, remove passenger side instru-

ment lower panel.

• Specification data are reference values and are measured between each terminal and ground.
• Pulse signal is measured by CONSULT-III.

CAUTION:

BRAKE SW2
(Stop lamp switch)

• Ignition switch: ON

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

ON

DIST SW

• Ignition switch: ON

DISTANCE switch: Pressed

ON

DISTANCE switch: Released

OFF

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

EXH V/T LEARN

• Engine: Running

Exhaust Valve Timing Control Learning 
has not been performed yet.

YET

Exhaust Valve Timing Control Learning 
has not been performed yet.

CMPLT

BAT CUR SEN

• Engine speed: Idle

• Battery: Fully charged*

2

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

Approx. 2,600 - 3,500mV

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

FAN DUTY

• Engine: Running

0 - 100%

ALT DUTY SIG

• Power generation voltage variable control: Operating

ON

• Power generation voltage variable control: Not operating

OFF

Monitor Item

Condition

Values/Status

JMBIA0070ZZ

HAC-110

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

ECM

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.

Terminal No.

Wire 

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

1

Ground

W

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 - 8.8V

2

Ground

G

Throttle control motor 
(Open) (bank 1)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/

T)

• Accelerator pedal: Fully de-

pressed

0 - 14V

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/

T)

• Accelerator pedal: Fully re-

leased

0 - 14V

3

Ground

R

Throttle control motor re-
lay power supply (bank 
1)

Input

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

4

Ground

BR

Throttle control motor 
(Close) (bank 1)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/

T)

• Accelerator pedal: In the middle 

of releasing operation

0 - 14V

5

Ground

GR

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 - 8.8V

JMBIA0030GB

JMBIA0031GB

JMBIA0032GB

JMBIA0033GB

JMBIA0030GB

ECM

HAC-111

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

6

Ground

SB

Exhaust valve timing 
control magnet retarder 
(bank 1)

Output

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

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]
• Warm-up condition
• Around 2,500 rpm while the en-

gine speed is rising

7 - 12V

7

Ground

Y

Exhaust valve timing 
control magnet retarder 
(bank 2)

Output

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

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]
• Warm-up condition
• Around 2,500 rpm while the en-

gine speed is rising

7 - 12V

8

Ground

B

ECM ground

[Engine is running]
• Idle speed

Body ground

11

12
15
16
19
20

Ground

GR

L

V

G

SB

Y

Ignition signal No. 4
Ignition signal No. 3
Ignition signal No. 5
Ignition signal No. 2
Ignition signal No. 6
Ignition signal No. 1

Output

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

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

0 - 0.2V

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

0.1 - 0.4V

17

Ground

P

Heated oxygen sensor 2 
heater (bank 1)

Output

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

after the following conditions 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

10V

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

BATTERY VOLTAGE
(11 - 14V)

Terminal No.

Wire 

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0034GB

JMBIA0034GB

JMBIA0035GB

JMBIA0036GB

JMBIA0037GB

 

 

 

 

 

 

 

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