DTC Logic
DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE
1.PERFORM SELF DIAGNOSTIC RESULT
1. If there is a device connected to the USB interface, disconnect it.
2. Turn ignition switch ON and wait for 2 seconds or more.
3. Perform Self Diagnostic Result for MULTI AV.
Is DTC U1263 displayed?
YES >> Refer to AV "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis Procedure
1.CHECK USB INTERFACE HARNESS
Visually inspect USB interface harness. Refer to AV "Removal and Installation".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace USB interface harness. Refer to AV "Removal and Installation".
2.CHECK USB INTERFACE HARNESS
Check USB interface harness. Refer to AV "Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace AV control unit. Refer to AV "Removal and Installation".
NO >> Replace USB interface harness. Refer to AV "Removal and Installation".
U1258 Satellite radio antennaDTC Logic DTC DETECTION LOGIC Diagnosis Procedure Regarding Wiring Diagram information, refer to AV "Wiring Diagram". 1.SATELLITE ANTENNA INSPECTION Visually inspect ...

DTC Logic DTC DETECTION LOGIC Diagnosis Procedure Regarding Wiring Diagram information, refer to AV "Wiring Diagram". 1.ANTENNA AMP. INSPECT ...
U0073 Communication bus a off
DTC Logic
DTC
Trouble diagnosis name
DTC detecting condition
Possible causes
U0073
Control Module Communication
Bus "A" Off
When the ignition switch is ON,
TCM detects a bus-off error
continuously for 2 seconds or
more.
Harness or connector
(CA ...
Diagnosis and repair workflow
Workflow
OVERALL SEQUENCE
DETAILED FLOW
1.INTERVIEW CUSTOMER
Interview the customer to obtain as much information as possible about the
conditions and environment under
which the malfunction occurred.
>> GO TO 2.
2.SYMPTOM CHECK
Verify symptoms.
>> GO TO 3.
3.CHECK FOR DT ...