Nissan Frontier. Instruction — part 684
P2096, P2097, P2098, P2099 A/F SENSOR 1
EC-1307
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE FOR MEXICO]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
>> GO TO 3.
3.
CHECK FOR EXHAUST GAS LEAK
1. Start engine and run it at idle.
2. Listen for an exhaust gas leak before the three way catalyst 2.
Is exhaust gas detected?
YES
>> Repair or replace.
NO
>> GO TO 4.
4.
CHECK FOR INTAKE AIR LEAK
1. Start engine and run it at idle.
2. Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace.
5.
CLEAR THE SELF-LEARNING DATA.
With CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT.
3. Clear the self-learning control coefficient by touching “CLEAR”.
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected?
Is it difficult to start engine?
Without CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF.
3. Disconnect mass air flow sensor harness connector.
4. Restart engine and let it idle for at least 3 seconds.
5. Stop engine and reconnect mass air flow sensor harness con-
nector.
6. Make sure DTC P0102 is displayed.
7. Erase the DTC memory. Refer to
(Without CONSULT) or
(With CONSULT).
8. Make sure DTC P0000 is displayed.
9. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P0172 or P0174, P0175 detected?
Is it difficult to start engine?
Yes or No
Yes
>> Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to
No
>> GO TO 6.
6.
CHECK HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect A/F sensor 1 harness connector.
3. Check harness connector for water.
BBIA0541E
BBIA0544E
EC-1308
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE FOR MEXICO]
P2096, P2097, P2098, P2099 A/F SENSOR 1
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace harness connector.
7.
CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between A/F sensor 1 terminal 4 and ground with
CONSULT or tester.
OK or NG
OK
>> GO TO 9.
NG
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E2, F32
• IPDM E/R connector E119
• 15 A fuse (No.54)
• Harness for open or short between A/F sensor 1 and fuse
>> Repair or replace harness or connectors.
9.
CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows.
Refer to Wiring Diagram.
4. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 10.
Water should not exit.
Voltage: Battery voltage
PBIB3308E
A/F sensor 1 terminal
ECM terminal
Bank1
1
35
2
56
Bank 2
1
16
2
75
Continuity should exist.
Bank 1
Bank 2
A/F sensor 1 terminal
ECM terminal
A/F sensor 1 terminal
ECM terminal
1
35
1
16
2
56
2
75
Continuity should not exist.
P2096, P2097, P2098, P2099 A/F SENSOR 1
EC-1309
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE FOR MEXICO]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
10.
CHECK A/F SENSOR 1 HEATER
EC-1102, "Component Inspection"
.
OK or NG
OK
>> GO TO 11.
NG
>> GO TO 13.
11.
CHECK HEATED OXYGEN SENSOR 2
EC-1151, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> Replace heated oxygen sensor 2. Refer to
EC-972, "Engine Control Component Parts Location"
12.
CHECK INTERMITTENT INCIDENT
Perform
GI-42, "Intermittent Incident"
.
OK or NG
OK
>> GO TO 13.
NG
>> Repair or replace.
13.
REPLACE A/F SENSOR 1
Replace malfunctioning A/F sensor 1. Refer to
EC-972, "Engine Control Component Parts Location"
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 Heated Oxygen Sensor
Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
>> GO TO 14.
14.
CONFIRM A/F ADJUSTMENT DATA
1. Turn ignition switch ON.
2. Select “A/F ADJ-B1” and “A/F ADJ-B2” in “DATA MONITOR” mode with CONSULT.
3. Make sure that “0” is displayed on CONSULT screen.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 15.
15.
CREAR A/F ADJUSTMENT DATA
With CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT.
3. Clear the self-learning control coefficient by touching “CLEAR”.
Without CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF.
3. Disconnect mass air flow sensor harness connector.
4. Restart engine and let it idle for at least 5 seconds.
5. Stop engine and reconnect mass air flow sensor harness con-
nector.
6. Make sure DTC P0102 is displayed.
7. Erase the DTC memory. Refer to
(Without CONSULT) or
(With CONSULT).
8. Make sure DTC P0000 is displayed.
>> GO TO 16.
BBIA0541E
EC-1310
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE FOR MEXICO]
P2096, P2097, P2098, P2099 A/F SENSOR 1
16.
CONFIRM A/F ADJUSTMENT DATA
1. Turn ignition switch OFF and then ON.
2. Select “A/F ADJ-B1” and “A/F ADJ-B2” in “DATA MONITOR” mode with CONSULT.
3. Make sure that “0” is displayed on CONSULT screen.
OK or NG
OK
>> INSPECTION END
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст