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DTC 06, 10, 12, 18, 21 (MULTIPLE DTCS INDICATED)

BHE070201038W09

DTC 06, 10, 12, 18, 21 | A/C amplifier (+5 V power supply or sensor ground) system inspection
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POSSIBLE CAUSE | • Open circuit in wiring harnesses between A/C amplifier and each temperature sensor, air mix actuator, or airflow mode actuator

Diagnostic Procedure

STEP | INSPECTION | ACTION
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1 | • Disconnect the A/C amplifier connector (16-pin) and the evaporator temperature sensor connector. • Is there continuity between A/C amplifier connector (16-pin) terminal 2P and evaporator temperature sensor connector terminal A? | Yes | Inspect the connection at the A/C amplifier connector (16-pin). (See A/C AMPLIFIER INSPECTION [FULL-AUTO AIR CONDITIONER].)
No | Repair the wiring harness.