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SELF-DIAGNOSIS FUNCTION HAC-21 < SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONER] C D E F G H J K L M A B HAC N O P SELF-DIAGNOSIS FUNCTION Front Air Control Self-Diagnosis INFOID:0000000009882446 A/C SYSTEM SELF-DIAGNOSIS FUNCTION The self-diagnosis function is built into the front air control to quickly locate the cause of malfunctions. DESCRIPTION The self-diagnostic system diagnoses sensors, CAN system, and battery voltage on front air control Refer to applicable sections (items) for details. Fault codes (if any are present) will be displayed in the ambient temper- ature display area. Refer to HAC-21, "Front Air Control Self-Diagnosis Code Chart" . SELF-DIAGNOSTIC MODE 1. Press the OFF switch. ) and DEF ( ) mode switches together and release on the front air control. 3. Press the REC ( ) to enter self diagnostic mode. 4. Turn ignition switch OFF to exit out of self-diagnostic mode. Front Air Control Self-Diagnosis Code Chart INFOID:0000000009882447 SELF-DIAGNOSTIC CODE CHART AWIIA0938ZZ Code No. Reference page 03 Battery voltage out of range CHG-4, "Work Flow (With EXP-800 NI or GR8-1200 NI)" or CHG-7, "Work Flow (Without EXP-800 NI or GR8-1200 NI)" 30 In-vehicle sensor circuit out of range (low) HAC-59, "In-Vehicle Sensor Diagnosis Procedure" 31 In-vehicle sensor circuit out of range (high) 40 Ambient sensor circuit short HAC-56, "Ambient Sensor Diagnosis Procedure" 41 Ambient sensor circuit open 50 Optical sensor (Driver) circuit open or short HAC-62, "Optical Sensor Diagnosis Procedure" 52 Optical sensor (Passenger) circuit open or short 56 Intake sensor circuit short HAC-64, "Intake Sensor Diagnosis Procedure" 57 Intake sensor circuit open 80 CAN bus fault LAN-14, "Trouble Diagnosis Flow Chart" 90 Stuck button |