Pinpoint Test A: Poor Reception - AM/FM

Information and Entertainment System

Pinpoint Test A: Poor Reception - AM/FM

Refer to Wiring Diagram Set 130, Audio System/Navigation for schematic and connector information. Diagrams By Number

Normal Operation

The AM/FM antenna receives AM and FM radio waves. The 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 (not equipped on base AM/FM ACM) 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 B1A56:21 (Antenna: Signal Amplitude < Minimum) - sets when the signal strength is less than the pre-configured threshold value during the ACM self-test.

This pinpoint test is intended to diagnose the following:

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



PINPOINT TEST A: POOR RECEPTION - AM/FM

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

A1-A7:

A7-A9: