Infiniti EX35. Manual - part 674

 

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Infiniti EX35. Manual - part 674

 

 

EC-438

< COMPONENT DIAGNOSIS >

[VQ35HR]

P2A00, P2A03 A/F SENSOR 1

• Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant
(commercial service tool).

Do you have CONSULT-III?

YES

>> GO TO 12.

NO

>> GO TO 13.

12.

CONFIRM A/F ADJUSTMENT DATA

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “A/F ADJ-B1” and “A/F ADJ-B2” in “DATA MONITOR” mode with CONSULT-III.

3.

Make sure that “0.000” is displayed on CONSULT-III screen.

Is “0.000” displayed?

YES

>> INSPECTION END

NO

>> GO TO 13.

13.

CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE

Clear the mixture ratio self-learning value. Refer to 

EC-20, "MIXTURE RATIO SELF-LEARNING VALUE

CLEAR : Special Repair Requirement"

.

Do you have CONSULT-III?

YES

>> GO TO 14.

NO

>> INSPECTION END

14.

CONFIRM A/F ADJUSTMENT DATA

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “A/F ADJ-B1” and “A/F ADJ-B2” in “DATA MONITOR” mode with CONSULT-III.

3.

Make sure that “0.000” is displayed on CONSULT-III screen.

>> INSPECTION END

ASCD BRAKE SWITCH

EC-439

< COMPONENT DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

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ASCD BRAKE SWITCH

Description

INFOID:0000000003133617

When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON.
ECM detects the state of the brake pedal by this input of two kinds (ON/OFF signal).
Refer to 

EC-56, "System Description"

 for the ASCD function.

Component Function Check

INFOID:0000000003133618

1.

CHECK ASCD BRAKE SWITCH FUNCTION

 With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-III.

3.

Check “BRAKE SW1” indication under the following conditions.

 Without CONSULT-III

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-439, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003133619

1.

CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ASCD brake switch harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between ASCD brake switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• Fuse block (J/B) connector E103
• 10A fuse (No. 3)
• Harness for open or short between ASCD brake switch and fuse

Monitor item

Condition

Indication

BRAKE SW1

Brake pedal

Slightly depressed

OFF

Fully released

ON

ECM

Condition

Voltage (V)

Connector

+

Terminal

Terminal

M107

126

(ASCD brake switch signal)

128

Brake pedal

Slightly depressed

Approx. 0

Fully released

Battery voltage

ASCD brake switch

Ground

Voltage

Connector

Terminal

E109

1

Ground

Battery voltage

EC-440

< COMPONENT DIAGNOSIS >

[VQ35HR]

ASCD BRAKE SWITCH

>> Repair open circuit or short to ground in harness or connectors.

3.

CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ASCD brake switch harness connector and ECM harness connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E106, M6
• Harness for open or short between ECM and ASCD brake switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK ASCD BRAKE SWITCH

Refer to 

EC-440, "Component Inspection (ASCD Brake Switch)"

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace ASCD brake switch.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection (ASCD Brake Switch)

INFOID:0000000003133620

1.

CHECK ASCD BRAKE SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect ASCD brake switch harness connector.

3.

Check the continuity between ASCD brake switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK ASCD BRAKE SWITCH-II

1.

Adjust ASCD brake switch installation. Refer to 

BR-7, "Inspection and Adjustment"

.

2.

Check the continuity between ASCD brake switch terminals under the following conditions.

ASCD brake switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

E109

2

M107

126

Existed

Terminals

Condition

Continuity

1 and 2

Brake pedal

Fully released

Existed

Slightly depressed

Not existed

Terminals

Condition

Continuity

1 and 2

Brake pedal

Fully released

Existed

Slightly depressed

Not existed

ASCD BRAKE SWITCH

EC-441

< COMPONENT DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD brake switch.

 

 

 

 

 

 

 

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