Operational Check

INSPECTION AND ADJUSTMENT


Operational Check


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

Conditions : Engine running at normal operating temperature

INSPECTION PROCEDURE
1.CHECK MEMORY FUNCTION
1. Start the engine.
2. Operate the temperature control switch (driver side) and raise the temperature setting to 32�C (90�F).
3. Press the OFF switch.
4. Turn the ignition switch OFF.
5. Turn the ignition switch ON.
6. Press the AUTO switch.
7. Check that the temperature setting, before turning the ignition switch OFF, is stored.
Is the inspection result normal?
YES - GO TO 2.
NO - Check power and ground circuits for A/C auto amp. With Monochrome Display.
2.CHECK BLOWER MOTOR SPEED
1. Operate the fan control dial. Check that the fan speed changes.
2. Check the operation for all fan speeds.
Is the inspection result normal?
YES - GO TO 3.
NO - Check blower motor system. With Monochrome Display.
3.CHECK DISCHARGE AIR (MODE SWITCH AND DEF SWITCH)
1. Press the MODE switch and the DEF switch.
2. Check that the air outlets change according to each indicated air outlet by placing a hand in front of the outlets. With Monochrome Display.

NOTE:



Is the inspection result normal?
YES - GO TO 4.
NO - Check mode door system. With Monochrome Display.
4.CHECK INTAKE AIR



3. Listen for the intake door position change. (Slight change of blower sound can be heard.)

NOTE:



Is the inspection result normal?
YES - GO TO 5.
NO - Check intake door system. With Monochrome Display.
5.CHECK A/C SWITCH
1. Press the A/C switch.
2. The A/C switch indicator is turned ON.
Confirm that the A/C compressor clutch engages (sound or visual inspection).
Is the inspection result normal?
YES - GO TO 6.
NO - Check magnet clutch system. With Monochrome Display.
6.CHECK TEMPERATURE DECREASE
1. Operate the A/C compressor.
2. Operate the temperature control switch (driver side) and lower the temperature setting to 18�C (60�F).
3. Check that the cool air blows from the outlets.
Is the inspection result normal?
YES - GO TO 7.
NO - Check for insufficient cooling. With Monochrome Display.
7.CHECK TEMPERATURE INCREASE
1. Operate the temperature control switch (driver side) and raise the temperature setting to 32�C (90�F) after warming up the engine.
2. Check that the warm air blows from the outlets.
Is the inspection result normal?
YES - GO TO 8.
NO - Check for insufficient heating. With Monochrome Display.
8.CHECK DUAL MODE FUNCTION
1. Press the DUAL mode switch, and then check that "DUAL" is shown on the display.
2. Operate the temperature control switch (driver side). Check that the discharge air temperature (driver side) changes.
3. Operate the temperature control switch (passenger side). Check that the discharge air temperature (passenger side) changes.
4. Press the DUAL mode switch, and then check that the temperature setting (driver/passenger) is unified to the driver side temperature setting.
Is the inspection result normal?
YES - GO TO 9.
NO - With Monochrome Display and perform the appropriate diagnosis.
9.CHECK AUTO MODE
1. Press the AUTO switch, and then check that "AUTO" is shown on the display.
2. Operate the temperature control switch (driver side). Check that the fan speed, outlet air or intake air changes. The discharge air temperature or fan speed varies depending on the ambient temperature, in-vehicle temperature, and temperature setting.
Is the inspection result normal?
YES - Inspection End
NO - With Monochrome Display and perform the appropriate diagnosis.