INSPECTION PROCEDURE 2: Cool air does not come


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.


Damaged wiring harness or connectors


STEP 1. Check the blower operation

Check that air blows through the air outlets.
(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 "The 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
  • Blower knob: Maximum air volume
  • Temperature control dial: 18°C (MAX COOL)
note The compressor does not work when the blower intake temperature is 0°C or less.

Q. Is the check result normal?

Go to Step 3.
Refer to Inspection Procedure 6 "The A/C compressor does not work ",

STEP 3. M.U.T.-III CAN bus diagnostics

Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?

Go to Step 4.
Repair the CAN bus lines. (Refer to GROUP 54C - Troubleshooting ).

STEP 4. M.U.T.-III diagnosis code

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

Q. Is the diagnosis code set?

Carry out the diagnosis code procedures. Refer to .
Go to Step 5.

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 .