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GROUP 54B AUDIO AND NAVIGATION SYSTEM CONTENTS SPECIAL TOOL................... DIAGNOSIS <RADIO AND CD PLAYER> .... STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING FOR NOISE...... DIAGNOSIS FUNCTION............. DATA LIST REFERENCE TABLE...... DIAGNOSTIC TROUBLE CODE CHART DIAGNOSTIC TROUBLE CODE PROCEDURES DTC U0019: Bus off (CAN-B)....... DTC U1415: Coding not completed/Data DTC B2420: Power integrated circuit DTC B2421: Radio tuner.......... DTC B2424: CD player error...... Code No.B2450 Switch panel DTC B2451: Audio panel type error TROUBLE SYMPTOM CHART......... SYMPTOM PROCEDURES............ Inspection Procedure 1: Power is not Inspection Procedure 2: No sound is Inspection Procedure 3: No sound is Inspection Procedure 3: No sound is Inspection Procedure 4: Noise is Inspection Procedure 5: Noise is Inspection Procedure 6: Sound mixed Inspection Procedure 7: Noise is Inspection Procedure 8: Excessive Inspection Procedure 9: Noise is INSPECTION PROCEDURE 10: Noise appears Inspection Procedure 11: Noise is Inspection Procedure 12: Constant Inspection Procedure 13: No reception Inspection Procedure 14: Poor Inspection Procedure 15: Distortion on 54B-1 Continued on next page |