Honda Accord ESM 2003 · Service Manual Service Manual 2003

Audio System Symptom Troubleshooting - Radio station has poor reception or can not be received (1 CD Player Type)

Audio System Symptom Troubleshooting - Radio station has poor reception or can not be received

Radio station has poor reception or can not be received


NOTE: Inspect the quality of radio reception in an open space away from tall buildings. If you are far from the nearest radio station, close to a high-voltage power line in the mountain or buildings, the reception will be poor.

1.Check if each radio station can be received normally. Compare the radio reception to another vehicle of the same model and trim level in the exact same conditions.

Are they the same?


YES - Operation is normal.n


NO - Go to 2.


2.Wrap aluminum foil (A) around the trip of the tester probe (B) as shown.

S80WA00J10311065412FEAD01AB

3.Touch one tester probe to the near of the window antenna terminal (A) here, and move the other tester probe along the antenna wires to check that continuity exists.

SDA3AL3J10311000000FAAD04A

Is there continuity?


YES - Go to 4.


NO - Repair the antenna wires.


4.With the radio ON, measure the voltage on the small black wire.

Is there 12 V?


YES - Go to 5.


NO - Go to 9.

5.Remove the radio-HVAC-display module and disconnect the antenna lead from the black of the radio and check for continuity from the end of the center pin.

SDA3AL3J10311000000FAAD01

Is there continuity?


YES - Go to 6.


NO - Replace the antenna lead.n


6.Check for continuity from end to of the outer surface of the antenna leads.

SDA3AL3J10311000000FAAD02

Is there continuity?


YES - Go to 7.


NO - Replace the antenna lead.n

7.Check for continuity between the antenna jack core at the radio and window antenna terminal.

SDA3AL3J10311000000FAAD05

Is there continuity?


YES - Go to 8.


NO - Replace the antenna amplifier.n


8.Check for continuity between the core and outer surface of the antenna jack.

SDA3AL3J10311000000FAAD06

Is there continuity?


YES - Faulty antenna lead.n


NO - Faulty audio unit.n

9.Remove the audio-HVAC-display module and disconnect the radio unit connector A (20P).

10.Check for continuity between A1 (YEL/GRN) and the small black wire at the antenna coil.

SDA3AL3J10311000000FAAD03BA

Is there continuity?


YES - Substitute a known-good audio-HVAC-display module and reset.


NO - Repair an open in the antanna amplifier harness.n