DCM Data Signal Circuit between Navigation ECU and DCM [10/2020 - 10/2022]: Procedure
- CHECK HARNESS AND CONNECTOR (DCM [TELEMATICS TRANSCEIVER] - RADIO RECEIVER ASSEMBLY)
- Disconnect the G53 radio receiver assembly connector.
- Disconnect the G163 DCM (telematics transceiver) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition G53-10 (USBV) - G163-15 (USBV) Always Below 1 Ω G53-11 (USBG) - G163-31 (USBG) Always Below 1 Ω G53-15 (VOT+) - G163-18 (VOR+) Always Below 1 Ω G53-16 (VOT-) - G163-34 (VOR-) Always Below 1 Ω G53-13 (VOR+) - G163-17 (VOT+) Always Below 1 Ω G53-14 (VOR-) - G163-33 (VOT-) Always Below 1 Ω G53-10 (USBV) - Body ground Always 10 kΩ or higher G53-11 (USBG) - Body ground Always 10 kΩ or higher G53-15 (VOT+) - Body ground Always 10 kΩ or higher G53-16 (VOT-) - Body ground Always 10 kΩ or higher G53-13 (VOR+) - Body ground Always 10 kΩ or higher G53-14 (VOR-) - Body ground Always 10 kΩ or higher G53-12 (SGND) - 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 (DCM [TELEMATICS TRANSCEIVER] - NAVIGATION ECU)
- Disconnect the G135 navigation ECU connector.
- Disconnect the G174 DCM (telematics transceiver) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition G135-1 (USB+) - G174-2 (USB+) Always Below 1 Ω G135-2 (USB-) - G174-1 (USB-) Always Below 1 Ω G135-3 (USBS) - G174-3 (USBS) Always Below 1 Ω G135-1 (USB+) - Body ground Always 10 kΩ or higher G135-2 (USB-) - Body ground Always 10 kΩ or higher G135-3 (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 [10/2020 - 10/2022]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR