Nissan Sentra B18 (2020-2025) Service Manual: Heater and Air Conditioning System Control Symptoms
Symptom Table
SYMPTOM TABLE
|
Symptom |
Reference Page |
|
|---|---|---|
|
A/C system does not come on. |
Go to Trouble Diagnosis Procedure for A/C System. |
Refer to Diagnosis Procedure. |
|
Air outlet does not change. |
Go to Trouble Diagnosis Procedure for Mode Door Motor |
Refer to Diagnosis Procedure. |
|
Mode door motor does not operate normally. |
||
|
Discharge air temperature does not change. |
Go to Trouble Diagnosis Procedure for Air Mix Door Motor |
Refer to Diagnosis Procedure. |
|
Air mix door motor does not operate normally. |
||
|
Intake door does not change. |
Go to Trouble Diagnosis Procedure for Intake Door Motor |
Refer to Diagnosis Procedure. |
|
Intake door motor does not operate normally. |
||
|
Blower motor operation is malfunctioning. |
Go to Trouble Diagnosis Procedure for Blower Motor. |
Refer to Diagnosis Procedure. |
|
Magnet clutch does not engage. |
Go to Trouble Diagnosis Procedure for Magnet Clutch. |
Refer to Diagnosis Procedure. |
|
Insufficient cooling |
Go to Trouble Diagnosis Procedure for Insufficient Cooling. |
Refer to Component Function Check. |
|
Insufficient heating |
Go to Trouble Diagnosis Procedure for Insufficient Heating. |
Refer to Component Function Check. |
|
Noise |
Go to Trouble Diagnosis Procedure for Noise. |
Refer to Symptom Table. |
Insufficient Cooling
Component Function Check
Component Function
Check
SYMPTOM: Insufficient cooling
INSPECTION FLOW
CONFIRM SYMPTOM BY PERFORMING OPERATION
CHECK - TEMPERATURE DECREASE
...
Other materials:
Removal and Installation
Removal and Installation
CAUTION:
Keep painted surface on the body or other parts
free of clutch fluid. If it spills, wipe up immediately and wash
the affected area with water.
Note:
When removing components such as hoses,
tubes/lines, etc., cap or plug openings t ...
Tcm branch line circuit
Diagnosis procedure
1.Check connector
Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and loose
connection (unit side and connector
side).
Tcm
Harness connector F50
Harness co ...
Dtc Diagnosis Procedure
DTC Diagnosis
Procedure
Note:
The Signal Tech II Tool [– (NI-50190)] can be used
to perform the following functions: Refer to the Signal Tech II User
Guide for additional information.
Activate and display TPMS sensor IDs
Display tire pressure reported ...
