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Fail-Safe Table

When any of the following malfunctions (DTCs) is detected, HVAC control module enters fail-safe mode. However, when HVAC control module detects normal operation of A/C system, fail-safe mode is canceled.

FAIL-SAFE TABLE

DTC No. Trouble Area Fail-Safe Operation
Detection of malfunction when ignition switch is turned ON Detection of malfunction during ignition switch is ON
B1511 Temperature control actuator (position sensor) and/or its circuit The operation of actuator stops.
B1512 Air flow control actuator (position sensor) and/or its circuit
B1513 Temperature control actuator and/or its circuit
B1514 Air flow control actuator and/or its circuit
B1520 Temperature selector and/or its circuit Middle position
B1521 Blower speed selector and/or its circuit 1st position
B1522 Air flow selector and/or its circuit DEF position