DCM Data Signal Circuit between Navigation ECU and DCM: Procedure

1. Disconnect the DCM (Telematics Transceiver) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the multi-media module receiver assembly connector.
3. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   P7-1-1 (USB-) - F74-1-1 (USB-)	Always	Below 1 Ω
   P7-1-2 (USB+) - F74-1-2 (USB+)	Always	Below 1 Ω
   P7-1-3 (USBS) - F74-1-3 (USBS)	Always	Below 1 Ω
   P7-2 (USBG) - F74-2 (USBG)	Always	Below 1 Ω
   P7-3 (VOT+) - F74-7 (VOR+)	Always	Below 1 Ω
   P7-4 (USBV) - F74-4 (USBV)	Always	Below 1 Ω
   P7-5 (VOT-) - F74-6 (VOR-)	Always	Below 1 Ω
   P7-6 (VOR-) - F74-5 (VOT-)	Always	Below 1 Ω
   P7-7 (VOR+) - F74-3 (VOT+)	Always	Below 1 Ω
   P7-1-1 (USB-) - Body ground	Always	10 kΩ or higher
   P7-1-2 (USB+) - Body ground	Always	10 kΩ or higher
   P7-1-3 (USBS) - Body ground	Always	10 kΩ or higher
   P7-2 (USBG) - Body ground	Always	10 kΩ or higher
   P7-3 (VOT+) - Body ground	Always	10 kΩ or higher
   P7-4 (USBV) - Body ground	Always	10 kΩ or higher
   P7-5 (VOT-) - Body ground	Always	10 kΩ or higher
   P7-6 (VOR-) - Body ground	Always	10 kΩ or higher
   P7-7 (VOR+) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to DCM [Telematics Transceiver])
   *2	Front view of wire harness connector (to Multi-media Module Receiver Assembly)

NG → REPLACE NO. 1 NAVIGATION WIRE 

OK → See step   2