Nissan Sentra Service Manual: 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. Confirm concern
Check the malfunction on the vehicle that the customer describes.
Inspect the relation of the symptoms and the condition when the symptoms occur.
>> Go to 3.
3. Identify the malfunctioning system with symptom diagnosis
Use Symptom diagnosis from the symptom inspection result in step 2 and then identify where to start performing the diagnosis based on possible causes and symptoms.
>> GO TO 4.
4. Perform the component diagnosis of the applicable system
Perform the diagnosis with Component diagnosis of the applicable system.
>> GO TO 5.
5. Repair or replace the malfunctioning parts
Repair or replace the specified malfunctioning parts.
>> Go to 6.
6. Final check
Check that malfunctions are not reproduced when obtaining the malfunction information from the customer, referring to the symptom inspection result in step 2.
Are the malfunctions corrected? Yes >> inspection end.
No >> go to 3.
Basic inspection
...
Inspection and adjustment
Additional service when replacing control unit
Additional service when replacing control unit : description
Memory reset procedure
Please observe the following instructions at confirming the moo ...
Other materials:
M&a branch line circuit
Diagnosis procedure
1.Check connector
Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the combination meter for damage,
bend and loose connection
(unit side and connector side).
Is the inspection result nor ...
Interior lights
The interior light can be turned ON regardless
of door position. The light will go off after
a period of time unless the ignition switch is
placed in the ON position when any door is
opened.
The interior lights can be set to operate
when the doors are opened. To turn off the
int ...
P0138 HO2S2
DTC Logic
DTC DETECTION LOGIC
The heated oxygen sensor 2 has a much longer switching time between rich and
lean than the air fuel ratio (A/
F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold)
causes the longer switching
time.
MALFUNCTION A
To judge the malfunction ...
