Nissan X-Trail 32. Manual — part 1004
P160D ECM
EC-1145
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P160D ECM
DTC Description
INFOID:0000000010935849
DTC DETECTION LOGIC
POSSIBLE CAUSE
ECM
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
EC-1145, "Diagnosis Procedure"
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010935850
1.
INSPECTION START
1.
Turn ignition switch ON.
2.
Erase DTC.
3.
Turn ignition switch OFF and wait for 1 minute.
4.
Turn ignition switch ON and wait at least 1 second.
5.
Perform the self-diagnosis.
Is the DTC P160D displayed again?
YES
>> GO TO 2.
NO
>> INSPECTION END
2.
REPLACE ECM
1.
Replace ECM.
2.
.
>> INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P160D
COMPUTER
(Computer)
• 1.DEF: VALUES OUTSIDE TOLERANC-
ES
ECM internal power supply malfunction.
EC-1146
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P1620 ECM
P1620 ECM
DTC Description
INFOID:0000000010935851
DTC DETECTION LOGIC
POSSIBLE CAUSE
ECM
FAIL-SAFE
Stop closed-loop control
DTC CONFIRMATION PROCEDURE
1.
PERFORM DIAGNOSIS PROCEDURE
NOTE:
DTC P1620 can not duplicate.
>> Proceed to
EC-1146, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000010935852
1.
CHECK ECM HARNESS CONNECTOR CONNECTIONS
1.
Turn ignition switch OFF.
2.
Check ECM harness connector connection.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK AIR FUEL RATIO (A/F) SENSOR HARNESS CONNECTOR CONNECTIONS
Check A/F sensor harness connector connection.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK A/F SENSOR CIRCUIT FOR OPEN AND SHORT
Check A/F sensor circuit for open and short.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P1620
PROPOR RICH SEN FNC
(Proportional richness sensor function)
• 1.DEF: VALUES OUTSIDE TOLERANC-
ES
ECM function is malfunctioning.
+
-
Continuity
ECM
A/F sensor
Connector
Terminal
Connector
Terminal
F117
89
F166
3
Existed
F118
115
6
116
2
119
1
P1620 ECM
EC-1147
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
4.
CHECK INTERMITTENT INCIDENT
Perform
GI-44, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts.
5.
REPLACE A/F SENSOR
Replace A/F sensor.
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 and approved anti-seize lubricant.
>> INSPECTION END
EC-1148
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P1641 THERMOPLUNGER CONTROL UNIT
P1641 THERMOPLUNGER CONTROL UNIT
DTC Description
INFOID:0000000010935853
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors (Thermoplunger control unit circuit is open or shorted.)
• Thermoplunger control unit
FAIL-SAFE
Stop thermoplunger control
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON at least 2 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
EC-1148, "Diagnosis Procedure"
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010935854
1.
CHECK ECM HARNESS CONNECTOR CONNECTION
1.
Turn ignition switch OFF.
2.
Check the ECM harness connector connection.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK THERMOPLUNGER CONTROL UNIT HARNESS CONNECTOR CONNECTION
Check the thermoplunger control unit harness connector connection.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK THERMOPLUNGER CONTROL UNIT POWER SUPPLY
Check the thermoplunger control unit power supply.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P1641
THMPR 1 RLY C/CIR
(Thermoplunger 1 relay control circuit)
• 1.DEF: IMPLAUSIBLE SIGNAL
• CC.0: SHORT CIRCUIT TO EARTH
• CC.1: SHORT-CIRCUIT TO +12V
• CO: OPEN CIRCUIT
• ECM detects thermoplunger control unit circuit is open circuit.
• ECM detects thermoplunger control unit circuit is short circuit to ground.
• ECM detects thermoplunger control unit circuit is short circuit to battery.
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