Nissan Maxima Service and Repair Manual: B2578, B2579 in-vehicle sensor
Description
In-vehicle Sensor
- The in-vehicle sensor (1) is located on instrument lower cover (LH).
- It converts variations in compartment air temperature drawn from the aspirator into a resistance value. It is then input into the A/C auto amp.
In-vehicle Sensor Circuit
Aspirator
The aspirator (1) is located on driver side of heater & cooling unit assembly. It produces vacuum pressure due to air discharged from the heater & cooling unit assembly, continuously taking compartment air in the aspirator.
DTC Logic
DTC DETECTION LOGIC
NOTE: If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010.
DTC CONFIRMATION PROCEDURE
1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT
- Using CONSULT, perform "SELF-DIAGNOSIS RESULTS" of HVAC.
- Check if any DTC No. is displayed in the self-diagnosis results.
NOTE: If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010.
Diagnosis Procedure
1.CHECK IN-VEHICLE SENSOR POWER SUPPLY
- Disconnect in-vehicle sensor connector.
- Turn ignition switch ON.
- Check voltage between in-vehicle sensor harness connector M34 terminal 1 and ground.
1 - Ground: Approx. 5V
2.CHECK CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.
- Turn ignition switch OFF.
- Disconnect A/C auto amp. connector.
- Check continuity between in-vehicle sensor harness connector M34 (A) terminal 2 and A/C auto amp. harness connector M37 (B) terminal 37.
2 - 37: Continuity should exist.
3.CHECK IN-VEHICLE SENSOR
Check in-vehicle sensor.
4.CHECK CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.
- Turn ignition switch OFF.
- Disconnect A/C auto amp. connector.
- Check continuity between in-vehicle sensor harness connector M34 (A) terminal 1 and A/C auto amp. harness connector M37 (B) terminal 36.
1 - 36: Continuity should exist.
- Check continuity between in-vehicle sensor harness connector M34 (A) terminal 1 and ground.
1 - Ground: Continuity should not exist.
Component Inspection
1.CHECK IN-VEHICLE SENSOR
- Turn ignition switch OFF.
- Disconnect in-vehicle sensor connector.
- Check resistance between in-vehicle sensor terminals.
B257B, B257C ambient sensor
Description
COMPONENT DESCRIPTION
Ambient Sensor
The ambient sensor (1) is installed to the front bumper
reinforcement.
It detects ambient temperature and converts it into a resistance
...
B2581, B2582 intake sensor
Description
Intake Sensor
The intake sensor is located on the evaporator.
It converts air temperature after it passes through the evaporator
into a resistance value which is then input to ...
Other materials:
Symptom diagnosis
AUDIO SYSTEM
Symptom Table
AUDIO SYSTEM
Symptoms
Check items
Probable malfunction location
The disk cannot be removed.
Audio unit
Malfunction in audio unit.
Refer to AV-73, "Removal and
Installation".
No sound comes out ...
C1734 control unit
Description
An internal malfunction has been detected in the TPMS function of the BCM.
DTC Logic
NOTE: The Signal Tech II Tool (J-50190) can
be used to perform the following functions. Refer to the Signal Tech II User
Guide for additional information.
Activate and display TPMS trans ...
Checking engine coolant level
Check the coolant level in the reservoir when
the engine is cold. If the coolant level is below
the MIN level B , add coolant to the MAX level
A . If the reservoir is empty, check the coolant
level in the radiator when the engine is cold. If
there is insufficient coolant in the radiator, fi ...
Nissan Maxima Owners Manual
- Illustrated table of contents
- Safety-Seats, seat belts and supplemental restraint system
- Instruments and controls
- Pre-driving checks and adjustments
- Monitor, climate, audio, phone and voice recognition systems
- Starting and driving
- In case of emergency
- Appearance and care
- Do-it-yourself
- Maintenance and schedules
- Technical and consumer information
Nissan Maxima Service and Repair Manual
0.0095