Circuit/System Testing (Communication Interface Module)
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the GPS antenna coax cable from the CIM.
- Ignition ON, test for 4.5-5.5 V between the CIM coax cable center conductor terminal at the module and ground.
- If not within the specified range, replace the CIM.
- Reconnect the coax cable to the CIM. Disconnect the coax cable from the GPS antenna.
- 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.
- If all circuits test normal, replace the GPS antenna.