Nissan Frontier. Instruction — part 655
P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE
EC-1191
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE FOR MEXICO]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
14.
CHECK IGNITION TIMING
Check the following items. Refer to
.
OK or NG
OK
>> GO TO 15.
NG
>> Follow the
.
15.
CHECK A/F SENSOR 1 INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect A/F sensor 1 harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows.
Refer to Wiring Diagram.
5. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
6. Also check harness for short to power.
OK or NG
OK
>> GO TO 16.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors between ECM
and A/F sensor 1.
16.
CHECK A/F SENSOR 1 HEATER
EC-1102, "Component Inspection"
.
OK or NG
Items
Specifications
Target idle speed
625
± 50 rpm (in P or N position)
Ignition timing
15
± 5° BTDC (in P or N position)
A/F sensor 1 terminal
ECM terminal
Bank 1
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.
BBIA0544E
EC-1192
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE FOR MEXICO]
P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE
OK
>> GO TO 18.
NG
>> GO TO 17.
17.
REPLACE A/F SENSOR 1
Replace malfunctioning A/F sensor 1. Refer to
.
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.
>> INSPECTION END
18.
CHECK MASS AIR FLOW SENSOR
With CONSULT
Check mass air flow sensor signal in “DATA MONITOR” mode with CONSULT.
With GST
Check mass air flow sensor signal in Service $01 with GST.
OK or NG
OK
>> GO TO 19.
NG
>> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or
ground. Refer to
EC-1110, "Component Description"
19.
CHECK SYMPTOM MATRIX CHART
Check items on the rough idle symptom in
EC-1373, "Symptom Matrix Chart"
OK or NG
OK
>> GO TO 20.
NG
>> Repair or replace.
20.
ERASE THE 1ST TRIP DTC
Some tests may cause a 1st trip DTC to be set.
Erase the 1st trip DTC from the ECM memory after performing the tests. Refer to
(Without CONSULT) or
(With CONSULT).
>> GO TO 21.
21.
CHECK INTERMITTENT INCIDENT
.
>> INSPECTION END
2.0 - 6.0 g/s:
at idling
7.0 - 20.0 g/s:
at 2,500 rpm
2.0 - 6.0 g/s:
at idling
7.0 - 20.0 g/s:
at 2,500 rpm
P0327, P0328, P0332, P0333 KS
EC-1193
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE FOR MEXICO]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0327, P0328, P0332, P0333 KS
Component Description
INFOID:0000000009481835
The knock sensor is attached to the cylinder block. It senses engine
knocking using a piezoelectric element. A knocking vibration from
the cylinder block is sensed as vibrational pressure. This pressure is
converted into a voltage signal and sent to the ECM.
On Board Diagnosis Logic
INFOID:0000000009481836
The MIL will not illuminate for these diagnoses.
DTC Confirmation Procedure
INFOID:0000000009481837
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next step.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
4. Start engine and run it for at least 5 seconds at idle speed.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to
EC-1193, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000009481838
1.
CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check resistance between ECM terminals 15, 36 and ground. Refer to Wiring Diagram.
NOTE:
It is necessary to use an ohmmeter which can measure more than 10 M
Ω.
BBIA0547E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0327
0327
(Bank 1)
Knock sensor circuit low in-
put
An excessively low voltage from the sensor
is sent to ECM.
• Harness or connectors
(The sensor circuit is open or shorted.)
• Knock sensor
P0332
0332
(Bank 2)
P0328
0328
(Bank 1)
Knock sensor circuit high in-
put
An excessively high voltage from the sensor
is sent to ECM.
P0333
0333
(Bank 2)
Resistance: Approximately 532 - 588 k
Ω [at 20°C (68°F)]
EC-1194
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE FOR MEXICO]
P0327, P0328, P0332, P0333 KS
4. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 2.
2.
CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II
1. Disconnect knock sensor harness connector.
2. Check harness continuity between ECM terminal 15 and knock
sensor (bank1) terminal 1, ECM terminal 36 and knock sensor
(bank 2) terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F67, F250
• Harness for open or short between ECM and knock sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK KNOCK SENSOR
EC-1195, "Component Inspection"
.
OK or NG
OK
>> GO TO 5.
NG
>> Replace malfunctioning knock sensor. Refer to
5.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
.
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace ground connections.
6.
CHECK KNOCK SENSOR SHIELD CIRCUIT FOR OPEN AND SHORT
1. Disconnect knock sensor harness connector.
2. Check harness continuity between knock sensor terminal 2 and ground. Refer to Wiring Diagram.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 7.
Continuity should exist.
BBIA0547E
BBIA0539E
Continuity should exist.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст