Nissan Murano: Heater & Air Conditioning Control System :: Basic Inspection / Operation Inspection

Work Procedure

DESCRIPTION

The purpose of the operational check is to check that the individual system operates normally.

OPERATION INSPECTION

CHECK MEMORY FUNCTION

1. Set temperature control (driver side) to 89°F or 90°F (32°C).

2. Press OFF switch.

3. Ignition switch OFF.

4. Ignition switch ON.

5. Press AUTO switch.

6. Check that set temperature is maintained.

Is the inspection result normal?

GO TO 2.

GO TO 9.

CHECK FRONT BLOWER MOTOR

1. Start engine.

2. Operate fan switch.

3. Check that fan speed changes. Check operation for all fan speeds.

Is the inspection result normal?

GO TO 3.

GO TO 9.

CHECK DISCHARGE AIR (MODE SWITCH AND DEF SWITCH)

1. Operate fan switch to set the fan speed to maximum speed.

2. Operate MODE switch and DEF switch.

3. Check that air outlets change according to each indicated air outlet by placing a hand in front of the outlets. Refer to System Description.

Is the inspection result normal?

GO TO 4.

GO TO 9.

CHECK INTAKE AIR

1. Press REC switch to set the air inlet to recirculation. The REC switch indicator turns ON.

2. Listen to intake sound and confirm air inlets change.

3. Press FRE switch to set the air inlet to fresh air intake. The REC switch indicator turns OFF.

4. Listen to intake sound and confirm air inlets change.

Is the inspection result normal?

GO TO 5.

GO TO 9.

CHECK DISCHARGE AIR TEMPERATURE (LH/RH INDEPENDENT TEMERATURE ADJUSTMENT FUNCTION)

1. Operate temperature control (driver side).

2. Check that discharge air temperature (driver side) changes.

3. Operate temperature control (passenger side). The DUAL switch indicator is turns ON.

4. Check that the discharge air temperature (passenger side) changes.

5. Press DUAL switch. The DUAL switch indicator turns OFF.

6. Check that air temperature setting (LH/RH) is unified to the driver side temperature setting.

Is the inspection result normal?

GO TO 6.

GO TO 9.

CHECK WITH TEMPERATURE SETTING LOWERED

1. Operate A/C compressor.

2. Operate temperature control (driver side) and lower the set temperature to 60°F or 61°F (18°C).

3. Check that cool air blows from the air outlets.

Is the inspection result normal?

GO TO 7.

GO TO 9.

CHECK TEMPERATURE INCREASE

1. Operate temperature control (driver side) and raise the set temperature to 89°F or 90°F (32°C).

2. Check that warm air blows from the air outlets.

Is the inspection result normal?

GO TO 8.

GO TO 9.

CHECK AUTO MODE

1. Press AUTO switch to confirm that “AUTO” is indicated on the display.

2. Operate temperature control (driver side) to check that fan speed or air outlet changes (the air outlet or fan speed varies depending on the ambient temperature, in-Nissan Murano vehicle temperature, set temperature, etc.).

Is the inspection result normal?

Inspection End.

GO TO 9.

CHECK SELF DIAGNOSTIC RESULT

CONSULT

1. Ignition switch ON.

2. Select "Self Diagnostic Result" mode of "HVAC".

Is any DTC detected?

Refer to DTC Index and perform the appropriate diagnosis.

GO TO 10.

CHECK FAIL-SAFE ACTIVATION

Check that symptom is applied to the fail-safe activation. Refer to Fail-safe.

Refer to Diagnosis Chart By Symptom and perform the appropriate diagnosis.