Inspection Procedure 2: Cool air does not come




CIRCUIT OPERATION


If the blower air temperature can not be cool when turning A/C switch ON and lowering the preset temperature, inadequate refrigerant quantity, sensors, harness or connectors may be suspected.

PROBABLE CAUSES



  • Damaged the wiring harness or connectors

DIAGNOSIS PROCEDURE


STEP 1. Check the blower operation


(1)Turn the ignition switch to the ON position.
(2)Blower knob: Other than OFF
(3)Check that the air comes out of the blower.

Q. Is the check result normal?

Go to Step 2.
Refer to Inspection Procedure 3 " Front blower does not work ".

STEP 2. Check the A/C compressor operation


Check that the compressor operates under the following conditions.

  • Engine operation
  • Air conditioner switch: ON
  • Temperature control dial: 18°C (MAX COOL)

Q. Is the check result normal?

Go to Step 3.
NO <LHD> : Refer to Inspection Procedure 8 " The compressor does not work <LHD> ".
NO <RHD (Except vehicles for Hong Kong and Singapore)> : Refer to Inspection Procedure 9 " The compressor does not work <RHD (Except vehicles for Hong Kong and Singapore)> ".
NO <RHD (Vehicles for Hong Kong and Singapore)> : Refer to Inspection Procedure 10 " The compressor does not work <RHD (Vehicles for Hong Kong and Singapore)> ".

STEP 3. M.U.T.-III diagnosis code


Check that the diagnosis code related to the air conditioner is not set.

Q. Is the check result normal?

Go to Step 4.
Carry out the diagnosis code procedures. Refer to .

STEP 4. M.U.T.-III data list


Check that the following service data M.U.T.-III display contents are normal. (Refer to )

  • Item 04: Pressure sensor
  • Item 50: Front preset temperature

Q. Is the check result normal?

Go to Step 5.
NO <Item 04 is abnormal> : Inspection Procedure 20: Refer to A/C pressure sensor system or Inspection Procedure 21: Refer to A/C pressure sensor system .
NO <Item 50 is abnormal> : Replace the A/C-ECU.

STEP 5. Refrigerant level check


Check that the refrigerant level is adequate. Refer to .

Q. Is the check result normal?

Intermittent malfunction. (Refer to GROUP 00, How to Cope with Intermittent Malfunction .)
Charge or remove the refrigerant level. Refer to or .