Nissan Sentra Service Manual: Basic inspection
Diagnosis and repair workflow
Work flow
Overall sequence
Detailed flow
1.Obtain information about symptom
Interview the customer to obtain as much information as possible about the conditions and environment under which the malfunction occurred.
>> GO TO 2.
2.Check symptom
- Check the symptom based on the information obtained from the customer.
- Check if any other malfunctions are present.
>> Go to 3.
3.Check consult self-diagnosis results
Connect consult and perform self-diagnosis. Refer to mwi-26, "dtc index".
Are self-diagnosis results normal? Yes >> go to 4.
No >> go to 5.
4.Narrow down malfunctioning parts by symptom diagnosis
Perform symptom diagnosis and narrow down the malfunctioning parts.
>> Go to 5.
5.Repair or replace malfunctioning parts
Repair or replace malfunctioning parts.
Note:
If dtc is displayed, erase dtc after repairing or replacing malfunctioning parts.
>> Go to 6.
6.Final check
Check that the warning buzzer in the combination meter operates normally.
Does it operate normally? Yes >> inspection end.
No >> go to 1.
Wiring diagram
Meter system
Wiring diagram
Compass
Wiring diagram
...
Other materials:
Steering wheel
Inspection
CONDITION OF INSTALLATION
Check installation condition of power steering gear
assembly, front suspension, front drive shaft and steering
column.
Check if movement exists when steering wheel is moved up and
down, to the left and right and to the axial
direction.
S ...
Dtc/circuit diagnosis
U1000 can comm circuit
Description
Refer to LAN-7, "CAN COMMUNICATION SYSTEM : System Description".
Dtc logic
DTC DETECTION LOGIC
CONSULT Display
DTC Detection Condition
Possible Cause
CAN COMM CIRCUIT
[U1000]
When IPDM E/R cannot communicate with CAN com ...
P0300, P0301, P0302, P0303, P0304 Misfire
DTC Logic
DTC DETECTION LOGIC
When a misfire occurs, engine speed will fluctuate. If the engine speed
fluctuates enough to cause the crankshaft
position (CKP) sensor (POS) signal to vary, ECM can determine that a misfire is
occurring.
Sensor
Input signal to ECM
ECM function
...
