Description

• The displayed ambient air temperature is higher than the actual temperature.

• The displayed ambient air temperature is lower than the actual temperature.

Diagnosis Procedure

NOTE

:
Check that the symptom is not applicable to the normal operating condition before starting diagnosis. Refer to MWI-68, "INFORMATION DISPLAY : Description".

1.CHECK AMBIENT SENSOR SIGNAL CIRCUIT

Check the ambient sensor signal circuit. Refer to HAC-56, "Diagnosis Procedure" (4WD models) or HAC-146, "Diagnosis Procedure" (2WD models).

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair harness or connector.

2.CHECK A/C AUTO AMP./PTC HEATER CONTROL UNIT CONNECTION

RECOGNITION SIGNAL CIRCUIT

Check the A/C auto amp./PTC heater control unit connection recognition signal circuit. Refer to MWI-62, "Diagnosis Procedure" (A/C auto amp.) or MWI-63, "Diagnosis Procedure" (PTC heater control unit).

Is the inspection result normal? YES >> GO TO 3.

NO >> Repair harness or connector.

3.CHECK AMBIENT SENSOR

Perform the part check for the ambient sensor. Refer to HAC-57, "Component Inspection" (4WD models) or HAC-147, "Component Inspection" (2WD models).

Is the inspection result normal? YES >> Replace combination meter. Refer to MWI-69, "Removal and Installation".

NO >> Replace ambient sensor. Refer to HAC-92, "Removal and Installation" (4WD models) or HAC- 189, "Removal and Installation" (2WD models).