Operation CHARM: Car repair manuals for everyone.

Test A: Poor Reception - AM/FM

PINPOINT TEST A: POOR RECEPTION - AM/FM

Normal Operation
The noise suppression equipment reduces interference transmitted through the speakers by the engine ignition and electrical systems.

DTC B2103 (Antenna Not Connected) - sets when the signal strength is less than a pre-determined value during the "antenna connected test" portion of the audio control module (ACM) self-test. This DTC may not set, even if there is an open in the antenna coaxial cable; however, if it does set, the antenna circuit can be isolated for diagnosis.

This pinpoint test is intended to diagnose the following:
- Antenna
- Antenna cable(s)
- Charging system
- Ignition system
- Noise suppression equipment
- ACM


A1:






A1-A8:






A9-A12: