Nissan X-Trail 32. Instruction — part 758
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-161
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
• Malfunctioning seal of intake air system, etc.
>> GO TO 30.
29.
CHECK “A/F ALPHA-B1” AND “B/FUEL SCHDL”
Select “A/F ALPHA-B1” and “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the
indication is within the SP value.
Is the measurement value within the SP value?
YES
>> INSPECTION END
NO
>> Detect malfunctioning part according to
30.
CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and then make sure that the indication is
within the SP value.
Is the measurement value within the SP value?
YES
>> INSPECTION END
NO
>> Detect malfunctioning part according to
EC-162
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000010775093
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check that the following fuse is not fusing.
Is the fuse fusing?
YES
>> Replace the fuse. (Check the power supply if it fuses again.)
NO
>> GO TO 2.
2.
CHECK GROUND CONNECTION
Check ground connection E21 and E38. Refer to
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace ground connection.
3.
CHECK ECM GROUND CIRCUIT
1.
Disconnect ECM harness connector.
2.
Check the continuity between ECM harness connector and ground.
3.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace malfunctioning part.
4.
CHECK ECM POWER SUPPLY-1
1.
Reconnect ECM harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
Location
Fuse No.
Capacity
IPDM E/R
#82
15 A
#95
5 A
+
Ground
Continuity
ECM
Connector
Terminal
F7
11
Ground
Existed
F8
54
55
56
E16
123
125
128
ECM
Voltage
(Approx.)
Connector
+
−
Terminal
E16
121
128
Battery voltage
POWER SUPPLY AND GROUND CIRCUIT
EC-163
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
NO
>> GO TO 6.
5.
CHECK ECM POWER SUPPLY-2
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> GO TO 7.
6.
CHECK ECM POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect IPDM E/R harness connector.
4.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
5.
Also check harness for short to power.
Is the inspection result normal?
YES
>> Perform trouble diagnosis for power supply.
NO
>> Repair or replace malfunctioning part.
7.
CHECK ECM RELAY CONTROL SIGNAL
Check the voltage between ECM harness connector terminals as per the following.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
NO
>> GO TO 8.
8.
CHECK ECM RELAY CONTROL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect IPDM E/R harness connector.
4.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
ECM
Condition
Voltage
(Approx.)
Connector
+
−
Terminal
E16
121
128
Ignition switch ON
→
OFF
After turning ignition switch OFF, battery
voltage will exist for a few seconds and drop
to approximately 0 V.
+
−
Continuity
ECM
IPDM E/R
Connector Terminal
Connector Terminal
E16
121
F72
73
Existed
ECM
Condition
Voltage
(Approx.)
Connector
+
−
Terminal
E16
121
128
Ignition switch ON
0 V
Turn ignition switch OFF and
wait at least 10 seconds.
Battery voltage
+
−
Continuity
ECM
IPDM E/R
Connector Terminal
Connector Terminal
E16
121
F72
73
Existed
EC-164
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
POWER SUPPLY AND GROUND CIRCUIT
5.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-60, "Removal and Installation"
NO
>> Repair or replace malfunctioning part.
9.
CHECK IGNITION SWITCH SIGNAL
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals.
Is the inspection result normal?
YES
>> Refer to
GI-44, "Intermittent Incident"
.
NO
>> GO TO 10.
10.
CHECK IGNITION SWITCH SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect IPDM E/R harness connector.
4.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
5.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> Perform trouble diagnosis for power supply.
NO
>> Repair or replace malfunctioning part.
ECM
Condition
Voltage
(Approx.)
Connector
+
−
Terminal
E16
109
128
Ignition switch OFF
0 V
Ignition switch ON
Battery voltage
+
−
Continuity
ECM
IPDM E/R
Connector
Terminal
Connector
Terminal
E16
109
E12
25
Existed
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст