Circuit/System Testing (with Navigation Radio)
WARNING: This page is about a different car, the 2011 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The vehicle may be equipped with sectioned coax. Test each section and replace only the faulty section, not the entire length of coax.
- Ignition OFF, disconnect the GPS and cellular coax cable connector at the K73 telematics communication interface control module.
- Using the EL-49903-3 kit (EL-49903-5 adapter and EL-49903-4 coax cable), connect the EL-49903 to the K73 telematics communication interface control module. See Special Tools .
- Clear the DTCs and operate the vehicle within the conditions for running the DTC. Verify DTC B2470 does not set.
- If the DTC sets, replace the K73 telematics communication interface control module.
- Ignition OFF, reconnect the coax cable to the K73 telematics communication interface module. Disconnect the coax cable from the T15 navigation signal splitter.
- Ignition ON, test for 4.5-5.5 V between the coax cable center conductor and the outer shield.
- If not within the specified range, replace the coax cable.
- Ignition OFF, reconnect the coax cable to the T15 navigation signal splitter. Disconnect the coax cable from the T4G cellular phone, navigation and digital radio antenna.
- Ignition ON, test for 4.5-5.5 V between the coax cable center conductor and the outer shield.
- If within the specified range, replace the T4G cellular phone, navigation and digital radio antenna.
- Ignition OFF, perform the coax cable test on the coax cable between the T15 navigation signal splitter and the T4G cellular phone, navigation and digital radio antenna, refer to Component Testing . The coax cable should pass the test.
- If the coax cable does not pass the test, replace the coax cable.
- If the coax cable passes the test, replace the T15 navigation and signal splitter.