LEFT CHANNEL
DIAGNOSIS PROCEDURE Step Action YES NO 1 CHECK HARNESS Turn ignition switch OFF. 2. Disconnect satellite radio tuner (factory installed) connector M41 and audio unit connector M42. 3. Check continuity between satellite radio tuner (factory installed) connector M41 (A) and audio unit connector M42 (B). 4. Check continuity between satellite radio tuner (factory installed) connector M41 (A) and ground. Are continuity results as specified? GO TO 2 Repair harness or connector. 2 CHECK LEFT CHANNEL AUDIO SIGNAL Connect satellite radio tuner (factory installed) and audio unit. Turn ignition switch ON. Check signal between satellite radio tuner (factory installed) connector M41 terminals 21 and 22 with SDT or oscilloscope. Are voltage readings as specified? Replace audio unit. Refer to [ AUDIO UNIT: REMOVAL AND INSTALLATION ]. Replace satellite radio tuner. Refer to [ SATELLITE RADIO TUNER: REMOVAL AND INSTALLATION ]
