Pinpoint Test 1: Poor Reception - AM/FM

PINPOINT TEST 1: POOR RECEPTION - AM/FM

Normal Operation

The AM/FM antenna receives AM and FM radio waves. The AM/FM antenna cable transfers the radio waves to the audio control module (ACM).
The noise suppression equipment reduces engine ignition and electrical systems interference transmitted through the speakers.The RDS function allows the vehicle operator to choose which genre (category) of music to listen to. When the SCAN button is pressed, the ACM only stops at channels falling within the selected category. If no channel in the selected category is found, the ACM continues to scan without stopping. This may appear to be a reception issue, but it is actually due to the customer setting.

- DTC B2103 (Antenna Not Connected) - sets when the signal strength is less than the pre-configured threshold value during the ACM self-test. In order for this DTC to set, the ACM must be tuned to AM, and the self-test must be run with the scan tool.

Possible Causes
- No channel found in the selected category
- AM/FM antenna
- AM/FM antenna cable
- Charging system
- Ignition system
- Noise suppression equipment
- ACM

Diagnostic Procedure

CAUTION:Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.