DCM Data Signal Circuit between Navigation ECU and DCM [11/2017 - 11/2019]: Procedure
- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER))
- Disconnect the O167 DCM (Telematics Transceiver) connector.
- Disconnect the O145 radio receiver assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition O167-3 (USBG) - O145-11 (USBG) Always Below 1 Ω O167-4 (VOT+) - O145-13 (VOR+) Always Below 1 Ω O167-5 (USBV) - O145-10 (USBV) Always Below 1 Ω O167-7 (VOT-) - O145-14 (VOR-) Always Below 1 Ω O167-8 (VOR-) - O145-16 (VOT-) Always Below 1 Ω O167-9 (VOR+) - O145-26 (VOT+) Always Below 1 Ω O167-3 (USBG) or O145-11 (USBG) - Body ground Always 10 kΩ or higher O167-4 (VOT+) or O145-13 (VOR+) - Body ground Always 10 kΩ or higher O167-5 (USBV) or O145-10 (USBV) - Body ground Always 10 kΩ or higher O167-7 (VOT-) or O145-14 (VOR-) - Body ground Always 10 kΩ or higher O167-8 (VOR-) or O145-16 (VOT-) - Body ground Always 10 kΩ or higher O167-9 (VOR+) or O145-26 (VOT+) - Body ground Always 10 kΩ or higher Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - DCM (TELEMATICS TRANSCEIVER))
- Disconnect the O167 DCM (Telematics Transceiver) connector.
*a Front view of wire harness connector
(to DCM (Telematics Transceiver))*b Front view of wire harness connector
(to Navigation ECU) - Disconnect the O166 navigation ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition O167-1 (USB-) - O166-2 (USB-) Always Below 1 Ω O167-2 (USB+) - O166-1 (USB+) Always Below 1 Ω O167-6 (USBS) - O166-3 (USBS) Always Below 1 Ω O167-1 (USB-) or O166-2 (USB-) - Body ground Always 10 kΩ or higher O167-2 (USB+) or O166-1 (USB+) - Body ground Always 10 kΩ or higher O167-6 (USBS) or O166-3 (USBS) - Body ground Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [11/2017 - 11/2019]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- Disconnect the O167 DCM (Telematics Transceiver) connector.