#
DTC 12

BHE070201038W05

DTC 12 | Ambient temperature sensor system inspection
--- | ---
POSSIBLE CAUSE | • Ambient temperature sensor malfunction • Open or short circuit in wiring harness between A/C amplifier and ambient temperature sensor

Diagnostic Procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Is the resistance between terminals 2K and 2P of the A/C amplifier connector (16-pin) as indicated below? – 0.35-120 kilohms | Yes | Inspect the connection at the A/C amplifier connector (16-pin). (See A/C AMPLIFIER INSPECTION [FULL-AUTO AIR CONDITIONER].)
No | Go to the next step.
2 | • Inspect the ambient temperature sensor. (See AMBIENT TEMPERATURE SENSOR INSPECTION.) • Is it normal? | Yes | Repair the wiring harness.
No | Replace the ambient temperature sensor. (See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION.)