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VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT NAVIGATION SYSTEM DI-135 C D E F G H I J L M A B DI CD CHANGER Without satellite radio ● CD auto changer power supply and ● Malfunction is detected on communica- 1. Check CD auto changer power supply and ground circuit. 2. Check communication circuit [REQ (CHG-AUDIO), Tx and RX] between audio unit and CD auto 3. Check communication signal [REQ (CHG-AUDIO), Tx and RX] between audio unit and CD auto 4. If the results from the above checkup show no mal- function, replace either audio unit or CD auto 5. If self-diagnosis results still show any malfunction, replace the other unit. With satellite radio ● CD auto changer power supply and ● Satellite radio tuner power supply and ● Malfunction is detected on communica- ● Malfunction is detected on control signal ● Malfunction is detected on communica- 1. Check CD auto changer power supply and ground circuit. 2. Check satellite radio tuner power supply and ground circuit. 3. Check communication circuit [REQ (CHG-AUDIO), REQ (SAT-AUDIO), Tx and RX] between audio unit 4. Check control signal circuit (CONT) between audio unit and satellite radio tuner. 5. Check communication circuit [REQ (CHG-AUDIO), Tx and Rx] between satellite radio tuner and CD 6. Check communication signal [REQ (CHG-AUDIO), REQ (SAT-AUDIO), Tx and RX] between audio unit 7. Check control signal (CONT) between audio unit and satellite radio tuner. 8. Check communication signal [REQ (CHG-AUDIO), Tx and Rx] between satellite radio tuner and CD 9. If the results from the above checkup show no mal- function, replace audio unit, satellite radio tuner, or 10.If self-diagnosis results still show any malfunction, replace one of the two units that is not replaced yet. 11.If self-diagnosis results still show any malfunction, replace the other unit. FRONT SEAT DISPLAY Display power supply and ground circuit 1. Check display power supply and ground circuit. 2. If the results from the above checkup show no mal- function, replace display. VOICE UNIT ● Voice activated control module power ● Malfunction is detected on communica- 1. Check voice activated control module power supply and ground circuit. 2. Check communication circuit between AV control unit and voice activated control module. 3. If the results from the above checkup show no mal- function, replace either AV control unit or voice acti- 4. If self-diagnosis results still show any malfunction, replace the other unit. Error item Possible cause Action to take |