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 CAUSE
Damaged wiring harness or connectors
DIAGNOSIS PROCEDURE
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 .
Go to Step 2.
Refer to Inspection Procedure 3 "The blower does not work 
".