Inspection Procedure 10
Some Noise Appears when there is Vibration or Shocks during Traveling.DIAGNOSIS
STEP 1. Check that the connectors are properly connected.
NOTE: For the corresponding connectors, etc., refer to Radio and Tape Player
Q: Are the connectors properly connected?
YES: Go to Step 2.
NO: Check the condition of the connector. Refer to Harness Connector Inspection. Check that there is no noise.
STEP 2. Check that noise appears when the radio switch is turned on while the vehicle is stopped.
NOTE: Static electricity noise: Body static electric from the shock absorber rubber bushings used to prevent vibration, tires, etc. occurs because of separation from the ground, causing a buzzing noise. Since no measures can be taken to discharge the static electricity of the vehicle body Check that there is no noise.
Q: Does noise appear when the radio switch is turned on while the vehicle is stopped and the radio is tapped while tuned away from a station?
YES: Go to Step 3.
NO: It may be static electricity noise.
STEP 3. Check that the radio is correctly.
Q: Is the radio correctly grounded?
YES: Go to Step 4.
NO: Tighten the screw securely. Check that there is no noise.
STEP 4. Check that the antenna is correctly grounded. (If noise appears when the antenna is moved, this means the ground is not securely connected.)
Q: Is the antenna correctly grounded?
YES: Repair or replace the radio. Check that there is no noise.
NO: If rust is present on the antenna ground screw, clean off the rust and tighten the ground screw securely. Check that there is no noise.