Nissan Maxima. Manual — part 419
EC-160
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
U0101 CAN COMM CIRCUIT
U0101 CAN COMM CIRCUIT
Description
INFOID:0000000010094859
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:0000000010094860
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
>>
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010094861
Go to
LAN-15, "Trouble Diagnosis Flow Chart"
.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
U0101
Lost communication
with TCM
When ECM is not transmitting or receiving CAN
communication signal from OBD (emission-related
diagnosis) with TCM for 2 seconds or more.
• CAN communication line between
TCM and ECM
• CAN communication line open or
shorted
U1001 CAN COMM CIRCUIT
EC-161
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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EC
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U1001 CAN COMM CIRCUIT
Description
INFOID:0000000010094862
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:0000000010094863
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
>>
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010094864
Go to
LAN-15, "Trouble Diagnosis Flow Chart"
.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
U1001
CAN communication
line
When ECM is not transmitting or receiving CAN com-
munication signal other than OBD (emission-related
diagnosis) for 2 seconds or more.
• Harness or connectors
(CAN communication line is open or
shorted)
EC-162
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0011, P0021 IVT CONTROL
P0011, P0021 IVT CONTROL
DTC Logic
INFOID:0000000010094865
DTC DETECTION LOGIC
NOTE:
If DTC P0011 or P0021 is displayed with DTC P0075, P0081, first perform the trouble diagnosis for DTC
P0075, P0081. Refer to
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing 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 10 V and 16 V at
idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE-I
With CONSULT
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT.
2. Start engine and warm it up to the normal operating temperature.
3. Maintain the following conditions for at least 6 consecutive seconds. Hold the accelerator pedal as steady
as possible.
CAUTION:
Always drive at a safe speed.
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
>> Go to
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE-II
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
P0011
Intake valve timing
control 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 timing 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
P0021
Intake valve timing
control performance
(bank 2)
VHCL SPEED SE
100 - 120 km/h (63 - 75 mph)
ENG SPEED
1,200 - 2,000 rpm
COOLAN TEMP/S
More than 60
°C (140°F)
B/FUEL SCHDL
More than 7.3 msec
Selector lever
D position
P0011, P0021 IVT CONTROL
EC-163
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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With CONSULT
1. Maintain the following conditions for at least 20 consecutive seconds.
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
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010094866
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 warming lamp illuminated?
YES
>> Go to
.
NO
>> GO TO 2.
2.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
EC-164, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace malfunctioning intake valve timing control solenoid valve. Refer to
.
3.
CHECK CRANKSHAFT POSITION SENSOR (POS)
EC-299, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace crankshaft position sensor (POS). Refer to
EM-37, "Removal and Installation (Upper Oil
4.
CHECK CAMSHAFT POSITION SENSOR (PHASE)
EC-302, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace malfunctioning camshaft position sensor (PHASE). Refer to
(LH) or
EM-49, "Removal and Installation (RH)"
(RH).
5.
CHECK CAMSHAFT (INTAKE)
ENG SPEED
1,400 - 3,175 rpm (A constant rotation is maintained.)
COOLAN TEMP/S
More than 70
°C (158°F)
Selector lever
1st or 2nd position
Driving location uphill
Driving vehicle uphill
(Increased engine load will help maintain the driving conditions re-
quired for this test.)
PBIA8559J
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