Work Procedure

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

Check condition : Engine running at normal operating temperature.

1.CHECK MEMORY FUNCTION

1. Set temperature to 30°C by operating the temperature control dial.

2. Press OFF switch.

3. Turn ignition switch OFF.

4. Turn ignition switch ON.

5. Press AUTO switch.

6. Check that set temperature is maintained.

Is the inspection result normal? YES >> GO TO 2.

NO >> GO TO 10.

2.CHECK AIR FLOW

1. Start engine.

2. Operate fan control dial.

3. Check that air flow changes. Check operation for all fan speeds.

Is the inspection result normal? YES >> GO TO 3.

NO >> GO TO 10.

3.CHECK AIR OUTLET

1. Operate fan control dial 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 air outlets. Refer to VTL-5, "System Description".

Is the inspection result normal? YES >> GO TO 4.

NO >> GO TO 10.

4.CHECK AIR INLET

1. Press intake switch to set the air inlet to recirculation. [Intake switch indicator ( side) turns ON.]
2. Listen to intake sound and confirm air inlets change.

3. Press intake switch again to set the air inlet to fresh air intake. [Intake switch indicator ( side) turns
OFF and ( side) turns ON.]
4. Listen to intake sound and confirm air inlets change.

Is the inspection result normal? YES >> GO TO 5.

NO >> GO TO 10.

5.CHECK COMPRESSOR

1. Press A/C switch. The A/C switch indicator is turns ON.

2. Check visually and by sound that the compressor operates.

3. Press A/C switch again The A/C switch indicator is turns OFF.

4. Check that compressor stops.

Is the inspection result normal? YES >> GO TO 6.

NO >> GO TO 10.

6.CHECK DISCHARGE AIR TEMPERATURE

1. Operate temperature control dial.

2. Check that discharge air temperature changes.

Is the inspection result normal? YES >> GO TO 7.

NO >> GO TO 10.

7.CHECK TEMPERATURE DECREASE

1. Operate compressor.

2. Operate temperature control dial and lower the set temperature to 16°C.

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

Is the inspection result normal? YES >> GO TO 8.

NO >> GO TO 10.

8.CHECK TEMPERATURE INCREASE

1. Operate temperature control dial and raise the set temperature to 30°C.

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

Is the inspection result normal? YES >> GO TO 9.

NO >> GO TO 10.

9.CHECK AUTO MODE

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

2. Operate temperature control dial to check that air outlet or air flow changes (the air outlet or air flow varies depending on the ambient temperature, in-vehicle temperature, set temperature, and etc.).

Is the inspection result normal? YES >> INSPECTION END

NO >> GO TO 10.

10.CHECK SELF-DIAGNOSIS WITH CONSULT-III

1. Perform self-diagnosis with CONSULT-III.

2. Check that any DTC is detected.

Is any DTC detected? YES >> Refer to HAC-39, "DTC Index" and perform the appropriate diagnosis.

NO >> GO TO 11.

11.CHECK FAIL-SAFE ACTIVATION

Check that symptom is applied to the fail-safe activation. Refer to HAC-39, "Fail-safe".

>> Refer to HAC-84, "Symptom Table" and perform the appropriate diagnosis.