Infiniti G37 Coupe. Manual — part 573
P2A00, P2A03 A/F SENSOR 1
EC-473
< COMPONENT DIAGNOSIS >
[VQ37VHR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 7.
7.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E3, F1
• IPDM E/R harness connector E7
• 15A fuse (No. 46)
• Harness for open or short between A/F sensor 1 and fuse
>> Repair or replace harness or connectors.
8.
CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between A/F sensor 1 harness connector and ECM harness connector.
4.
Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.
5.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
9.
CHECK A/F SENSOR 1 HEATER
EC-157, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 11.
10.
CHECK INTERMITTENT INCIDENT
Perform
GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> GO TO 11.
DTC
A/F sensor 1
Ground
Voltage
Bank
Connector
Terminal
P2A00
1
F3
4
Ground
Battery voltage
P2A03
2
F20
4
DTC
A/F sensor 1
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P2A00
1
F3
1
F102
57
Existed
2
61
P2A03
2
F20
1
65
2
66
DTC
A/F sensor 1
ECM
Ground
Continuity
Bank
Connector
Terminal
Connector
Terminal
P2A00
1
F3
1
F102
57
Ground
Not existed
2
61
P2A03
2
F20
1
65
2
66
EC-474
< COMPONENT DIAGNOSIS >
[VQ37VHR]
P2A00, P2A03 A/F SENSOR 1
NO
>> Repair or replace.
11.
REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace air fuel ratio (A/F) sensor 1.
CAUTION:
• Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.
• Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
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-22, "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-475
< COMPONENT DIAGNOSIS >
[VQ37VHR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
ASCD BRAKE SWITCH
Description
INFOID:0000000001911042
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
for the ASCD function.
Component Function Check
INFOID:0000000001734298
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 and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000001734299
1.
INSPECTION START
Check which type of transmission the vehicle is equipped with.
Which type of transmission?
A/T
>> GO TO 2.
M/T
>> GO TO 7.
2.
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 4.
NO
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
Monitor item
Condition
Indication
BRAKE SW1
Brake pedal (A/T)
Brake pedal and clutch pedal (M/T)
Slightly depressed
OFF
Fully released
ON
ECM
Ground
Condition
Voltage
Connector
Terminal
M107
126
(ASCD brake switch signal)
Ground
Brake pedal (A/T)
Brake pedal and clutch pedal (M/T)
Slightly depressed
Approx. 0V
Fully released
Battery voltage
ASCD brake switch
Ground
Voltage
Connector
Terminal
E109
1
Ground
Battery voltage
EC-476
< COMPONENT DIAGNOSIS >
[VQ37VHR]
ASCD BRAKE SWITCH
• Fuse block (J/B) connector E103
• 10A fuse (No. 3)
• Harness for open or short between ASCD brake switch and fuse
>> Repair open circuit or short to ground in harness or connectors.
4.
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 6.
NO
>> GO TO 5.
5.
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.
6.
CHECK ASCD BRAKE SWITCH
EC-478, "Component Inspection (ASCD Brake Switch)"
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> Replace ASCD brake switch.
7.
CHECK ASCD BRAKE SWITCH 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 12.
NO
>> GO TO 8.
8.
CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ASCD clutch switch harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between ASCD clutch switch harness connector and ground.
ASCD brake switch
ECM
Continuity
Connector
Terminal
Connector
Terminal
E109
2
M107
126
Existed
ASCD brake switch
Ground
Condition
Voltage
Connector
Terminal
E109
1
Ground
Brake pedal
Slightly depressed
Approx. 0V
Fully released
Battery voltage
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст