Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: No Cool Air Comes Out

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Interior / Heating / Air Conditioning / Air Conditioning System (for Gasoline Model With Manual Air Conditioning System) / No Cool Air Comes Out

DESCRIPTION

If warm air blows from the registers regardless of the temperature setting of the air conditioning system, the following factors may be the cause.

Symptom

Factor

No cool air comes out

  • (Blower control is normal)
  • Compressor with pulley assembly malfunction
  • Refrigerant pressure is extremely high or low
  • Refrigerant volume (low)
  • Clogged cooler condenser assembly fins
  • Cooling fan system malfunction
  • Mechanical locking of damper and damper link
  • No. 1 cooler thermistor malfunction
  • High inlet air temperature

PROCEDURE

1.

CHECK SWITCH INDICATOR

(a) Operate each switch on the air conditioning control assembly and check that the switch indicators operate normally.

OK:

All switch indicators operate normally.

NG

GO TO OTHER DIAGNOSIS PROCEDURE (Operation not Accepted Even If Air Conditioning Switch is Operated)

OK

2.

PERFORM ACTIVE TEST USING GTS

(a) Perform the Active Test according to the display on the GTS.

Body Electrical > Air Conditioner > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Front Air Mix Damper Control Servo Motor

No. 1 air conditioning radiator damper servo sub-assembly pulse

Min.: 128

Max.: 384

-
Body Electrical > Air Conditioner > Active Test

Active Test Display

Front Air Mix Damper Control Servo Motor

Data List Display

Front Air Mix Damper Control Servo Motor Actual Pulse

OK:

The No. 1 air conditioning radiator damper servo motor operates.

OK

INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET

NG

GO TO DTC TROUBLESHOOTING PROCEDURE FOR MALFUNCTIONING DAMPER SERVO MOTOR

    READ NEXT:

     Air Vent cannot be Switched

    DESCRIPTION If the air outlet mode does not change even though the air outlet display changes, the following factors may be the cause. Symptom Factor Air outlet mode cannot be changed

     No Warm Air Comes Out

    DESCRIPTION If cool air blows from the registers regardless of the temperature setting of the air conditioning system, the following factors may be the cause. Symptom Factor No wa

     Air Conditioning System (for Hev Model)

    SEE MORE:

     VIN Not Programmed (P063051)

    MONITOR DESCRIPTION DTC P063051 is stored when the Vehicle Identification Number (VIN) or frame number is not stored in the ECM or the stored VIN or frame number is not accurate. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note P063051 VIN Not Prog

     Lost Communication with DC/DC Converter Control Module "C" Missing Message (U01BD87)

    DESCRIPTION The hybrid vehicle control ECU transmits and receives signals via CAN communication to and from the DC/DC converter assembly. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Note U01BD87 Lost Communication with DC

    © 2020-2024 Copyright www.tcorollacross.com