The Ambient Temperature Display Is Incorrect

THE AMBIENT TEMPERATURE DISPLAY IS INCORRECT

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
Normal Operating Condition.

1. CHECK AMBIENT SENSOR SIGNAL CIRCUIT

Check the ambient sensor signal circuit. B257B.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair harness or connector.

2. CHECK A/C AUTO AMP. CONNECTION RECOGNITION SIGNAL CIRCUIT

Check the A/C auto amp. connection recognition signal circuit. A/C Auto Amp. Connection Recognition Signal Circuit.
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. B257B.
Is the inspection result normal?
YES- Replace combination meter. Removal And Installation.
NO- Replace ambient sensor. Service and Repair.