DTC 12

id070200802700

DTC 12

Ambient temperature sensor system inspection

POSSIBLE CAUSE

•  Connector or terminal malfunction

•  Open circuit in wiring harness between A/C amplifier connector terminals 2M and 2N

•  Short to ground in wiring harness between A/C amplifier connector terminals 2M and 2N

•  Ambient temperature sensor malfunction

DTC 12	Ambient temperature sensor system inspection
POSSIBLE CAUSE	• Connector or terminal malfunction • Open circuit in wiring harness between A/C amplifier connector terminals 2M and 2N • Short to ground in wiring harness between A/C amplifier connector terminals 2M and 2N • Ambient temperature sensor malfunction

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	INSPECT AMBIENT TEMPERATURE SENSOR CIRCUIT • Is the resistance between terminals 2M and 2N 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).
1		No	Go to the next step.
2	INSPECT AMBIENT TEMPERATURE SENSOR • Inspect the ambient temperature sensor. (See AMBIENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is it normal?	Yes	Repair the wiring harness.
2		No	Replace the ambient temperature sensor. (See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)