DCM Data Signal Circuit between Navigation ECU and DCM: Procedure

1. Disconnect the H133 DCM (telematics transceiver) connector.
   Fig 1: Identifying H33 And H132 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the H132 navigation computer sub-assembly (navigation ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H133-1-1 (USB-) - H132-1-1 (USB-)	Always	Below 1 Ω
   H133-1-2 (USB+) - H132-1-2 (USB+)	Always	Below 1 Ω
   H133-1-3 (USBS) - H132-1-3 (USBG)	Always	Below 1 Ω
   H133-2 (USBG) - H132-2 (USBG)	Always	Below 1 Ω
   H133-3 (VOT+) - H132-7 (VOR+)	Always	Below 1 Ω
   H133-4 (USBV) - H132-4 (USBV)	Always	Below 1 Ω
   H133-5 (VOT-) - H132-6 (VOR-)	Always	Below 1 Ω
   H133-6 (VOR-) - H132-5 (VOT-)	Always	Below 1 Ω
   H133-7 (VOR+) - H132-3 (VOT+)	Always	Below 1 Ω
   H133-1-1 (USB-) - Body ground	Always	10 kΩ or higher
   H133-1-2 (USB+) - Body ground	Always	10 kΩ or higher
   H133-1-3 (USBS) - Body ground	Always	10 kΩ or higher
   H133-2 (USBG) - Body ground	Always	10 kΩ or higher
   H133-3 (VOT+) - Body ground	Always	10 kΩ or higher
   H133-4 (USBV) - Body ground	Always	10 kΩ or higher
   H133-5 (VOT-) - Body ground	Always	10 kΩ or higher
   H133-6 (VOR-) - Body ground	Always	10 kΩ or higher
   H133-7 (VOR+) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to DCM (Telematics Transceiver))
   *b	Front view of wire harness connector (to Navigation computer sub-assembly (Navigation ECU))

NG → REPLACE NO. 1 NAVIGATION WIRE 

OK → See step   2