Circuit/System Testing
WARNING: This page is about a different car, the 2010 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the antenna coax from the CIM module and the T4F cellular phone antenna.
- Ignition ON, test for less than 1 V between the antenna coax center terminal and ground.
- If greater than the specified range, replace the antenna coax.
- Ignition ON, test for less than 1 V between the antenna coax outer shield and ground.
- If greater than the specified range, replace the antenna coax.
- Test for infinite resistance between the antenna coax center terminal and ground.
- If less than the specified value, replace the antenna coax.
- Test for infinite resistance between the antenna coax outer shield and ground.
- If less than the specified value, replace the antenna coax.
- Test for less than 5 Ω at the cellular antenna coax center terminal from end to end.
- If greater than specified value, replace the antenna coax.
- Test for less than 5 Ω at the cellular antenna coax outer shield from end to end.
- If greater than specified value, replace the antenna coax.
- Test for infinite resistance between the antenna coax center terminal and the outer shield.
- If less than specified value, replace the antenna coax.
- If coax cable tests normal, replace the T4F cellular phone antenna.
- 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 CIM.