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Home >> Suzuki >> 2012 >> Equator Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Cellular/Entertainment/Navigation/Audio) >> Diagnostic Information and Procedure >> Video Entertainment System Wireless Headphone Inoperative >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.

No Audio From Wireless Headphones 

NOTE: Center the balance and fade adjustment on the radio. If adjustment of the fade and balance eliminates the concern, review the operation of the radio with the customer.
  1. Turn ON the wireless headphones. Verify the power indicator lamp on the wireless headphone illuminates.
    • If the power indicator lamp does not illuminate on the wireless headphones check or replace the wireless headphone batteries. If the batteries are OK replace the wireless headphones.
  2. Activate the rear entertainment. Play a DVD and set both wireless headphones to the proper channel to hear the rear entertainment. Adjust the volume up on both wireless headphones. Verify that only one set of wireless headphones operate properly.
    • If only one set of wireless headphones do not have audio, replace the suspect wireless headphone set.
  3. With a DMM, verify there is B+ at the infra-red module supply voltage circuit when the rear entertainment is activated.
    • If B+ is not present, test for a open or short to power on the infra-red module supply voltage circuit. If the infra-red module supply voltage circuit tests normal, replace the rear seat audio control module.
  4. At the infrared module connector harness, test for AC voltage between the low reference circuit and the left and right infra-red audio signal circuits. Verify there is AC voltage with the rear entertainment activated.
    • If AC voltage is not present, test for an open, short to ground or short to B+ on the low reference and both left and right infra-red audio signal circuits. If the low reference and audio signals test normal replace the radio.
  5. Ignition OFF, Disconnect the harness connector of the infra-red module. Test for less than 1.0 Ω of resistance between the ground circuit terminal 12 and ground.
    • If greater than the specified range, repair the ground circuit.
    • If the ground circuit tests normal, replace the infra-red module.

Audio In One Channel of the Wireless Headphones or Distortion 

NOTE: Center the balance and fade adjustment on the radio. If adjustment of the fade and balance eliminates the concern, review the operation of the radio with the customer.
  1. Activate the rear entertainment. Set both wireless headphones to the proper channel to hear the rear entertainment. Adjust the volume up on both wireless headphones. Verify that only one set of wireless headphones operates properly.
    • If only one set of wireless headphones is faulty, replace the suspect wireless headphone set.
  2. At the infra-red module connector harness, Verify there is AC voltage between the low reference circuit and the left and right infra-red audio signal circuits with the rear entertainment activated.
    • If AC voltage is not present, test for an open, short to ground or short to B+ on the low reference and both left and right infra-red audio signal circuits. If the low reference and audio signals test normal replace the radio.
    • If AC voltage is present replace the infra-red module.
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