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Inspection Procedure 2: Cool air does not come.
 
 
 
 
TECHNICAL DESCRIPTION (COMMENT)
If the blower air temperature cannot be cool when turning A/C switch ON and lowering the preset temperature, inadequate refrigerant quantity, sensors, malfunction of A/C compressor, malfunction of A/C pipe solenoid valve, harness or connectors may be suspected.
 
 
TROUBLESHOOTING HINTS
  • The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
  • Malfunction of A/C compressor
  • The refrigerant quantity is inadequate.
  • Malfunction of the A/C pipe solenoid valve
  • Insufficiently charged main drive lithium-ion battery
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), check whether the air conditioning or A/C compressor assembly DTC is set.
Check that the diagnostic trouble code related to the air conditioning or A/C compressor assembly is not set (Refer to <Heater controller assembly (A/C-ECU)> or <A/C compressor assembly>).
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn the electric motor switch to the OFF position before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE) ."
(2) Turn the electric motor switch from OFF position to ON position.
(3) Check the DTC is set.
(4) Turn the electric motor switch to the OFF position.
Is the DTC set?
Carry out the DTC procedures.
Go to Step 2.
 
STEP 2. Using scan tool (M.U.T.-IIISE), check actuator test [The heater controller assembly (A/C-ECU)].
Perform the following actuator tests, and check that the device works normally.
  • Item No.21: Solenoid valve
Is the check result normal?
Go to Step 4.
Go to Step 3.
 
STEP 3. A/C pipe solenoid valve check.
Check the A/C pipe solenoid valve assembly (Refer to ).
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunctions ).
Replace the A/C pipe solenoid valve assembly (Refer to ).
 
STEP 4. Refrigerant level check.
Check that the refrigerant level is adequate (Refer to ).
Is the check result normal?
Go to Step 5.
Charge or remove the refrigerant level (Refer to ).
 
STEP 5. Check the blower operation.
Check that air blows through the air outlets.
(1) Power supply mode of the electric motor switch: OFF → ON
(2) Blower knob: Other than OFF
(3) Check that the air comes out of the blower.
Is the check result normal?
Go to Step 6.
Refer to Inspection Procedure 3 "The blower does not work ".
 
STEP 6. Retest the system.
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunctions ).
Replace the heater controller assembly (A/C-ECU) (Refer to ).