Circuit/System Testing
WARNING: This page is about a different car, the 2008 Isuzu i-370, 2008 Isuzu i-290, 2008 GMC Canyon, and 2008 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the radio antenna grounding surfaces and the mounting hardware for any corrosion that may cause a poor ground.
- If corrosion is noted, clean the grounding surfaces or hardware.
- Disconnect the antenna coax from the radio and the radio antenna.
- Test for infinite resistance between the antenna coax center terminal and ground.
- If less than the specified value, replace the antenna coax.
- Test for less than 5 ohms of resistance on the antenna coax center terminal from end to end.
- If greater than the specified range, replace the antenna coax.
- Test for less than 5 ohms of resistance on the antenna coax outer shield from end to end.
- If greater than the specified range, replace the antenna coax.
- Test for infinite resistance between the coax center terminal and the outer shield.
- If less than the specified value, replace the antenna coax.