Nissan Sentra. Manual — part 368
EC-168
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
U0101 CAN COMM CIRCUIT
U0101 CAN COMM CIRCUIT
Description
INFOID:0000000009758422
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
DTC Logic
INFOID:0000000009758423
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 3 seconds.
2. Check DTC.
Is DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009758424
Perform the trouble diagnosis for CAN communication system. Refer to
LAN-16, "Trouble Diagnosis Flow
.
DTC No.
CONSULT screen terms
(Trouble diagnosis con-
tent)
DTC detecting condition
Possible cause
U0101
LOST COMM (TCM)
(Lost communication with
TCM)
When ECM is not transmitting or receiving CAN
communication signal of OBD (emission-related
diagnosis) with TCM for 2 seconds or more.
CAN communication line between
TCM and ECM
U1001 CAN COMM CIRCUIT
EC-169
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
C
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A
EC
N
P
O
U1001 CAN COMM CIRCUIT
Description
INFOID:0000000009758425
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
DTC Logic
INFOID:0000000009758426
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 3 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009758427
Perform the trouble diagnosis for CAN communication system. Refer to
LAN-16, "Trouble Diagnosis Flow
.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
U1001
CAN COMM CIRCUIT
(CAN communication cir-
cuit)
When ECM is not transmitting or receiving CAN
communication signal other than OBD (emission
related diagnosis) for 2 seconds or more.
Harness or connectors
(CAN communication line is open or
shorted)
EC-170
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
P0011 IVT CONTROL
P0011 IVT CONTROL
DTC Logic
INFOID:0000000009758428
DTC DETECTION LOGIC
NOTE:
If DTC P0011 is displayed with DTC P0075, first perform the trouble diagnosis for
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
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 between 11 V and 16 V at
idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE-1
With CONSULT
1. Turn ignition switch ON and select “DATA MONITOR” mode of “ENGINE” using CONSULT.
2. Start engine and warm it up to normal operating temperature.
3. Maintain the following conditions for at least 6 consecutive seconds. Hold the accelerator pedal as steady
as possible.
4. Stop vehicle with engine running and let engine idle for 10 seconds.
5. Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
1. Maintain the following conditions for at least 20 consecutive seconds.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0011
INT/V TIM CONT-B1
(
″A″ Camshaft position - tim-
ing over-advanced or system
performance bank 1)
There is a gap between angle of target
and phase-control angle degree.
• Crankshaft position sensor (POS)
• Camshaft position sensor (PHASE)
• Intake valve control solenoid valve
• Accumulation of debris to the signal pick-up
portion of the camshaft
• Timing chain installation
• Foreign matter caught in the oil groove for in-
take valve timing control
ENG SPEED
1,200 - 2,000 rpm
COOLANT TEMP/S
More than 60
°C (140°F)
Selector lever
P or N position
P0011 IVT CONTROL
EC-171
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
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CAUTION:
Always drive at a safe speed.
2. Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009758429
1.
CHECK OIL PRESSURE WARNING LAMP
1. Start engine.
2. Check oil pressure warning lamp and confirm it is not illumi-
nated.
Is oil pressure warning lamp illuminated?
YES
>> Check the engine oil level. Refer to
NO
>> GO TO 2.
2.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Check the intake valve timing control solenoid valve. Refer to
EC-172, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace intake valve timing control solenoid valve. Refer to
.
3.
CHECK CRANKSHAFT POSITION SENSOR (POS)
Check the crankshaft position sensor (POS). Refer to
EC-279, "Component Inspection [CKP Sensor (POS)]"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace crankshaft position sensor (POS). Refer to
4.
CHECK CAMSHAFT POSITION SENSOR (PHASE)
Check the camshaft position sensor (PHASE). Refer to
EC-282, "Component Inspection [CMP Sensor
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace camshaft position sensor (PHASE). Refer to
.
5.
CHECK CAMSHAFT (INT)
Check the following.
ENG SPEED
1,200 - 3,175 rpm (A constant rotation is maintained.)
COOLANT TEMP/
S
More than 60
°C (140°F)
Selector lever
D position
Driving location
Driving vehicle uphill
(Increased engine load will help maintain the driving
conditions required for this test.)
PBIA8559J
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