DTC output pattern and malfunctioning location: C

C 

Possible cause 

• Connector terminal disconnection, poor contact, damage, deformation, corrosion
• Open circuit in wiring harness between audio unit and connector C-45
• Connector C-45 malfunction
• Audio unit malfunction

Fig 1: Multiplex Communication System - Wiring Diagram (For Connector C-45)

Inspection item 

• Audio unit connector
• Connector C-45
• Wiring harness between audio unit terminal 1O and connector C-45
• Wiring harness between audio unit terminal 1Q and connector C-45
• Audio unit