Video Entertainment System Wireless Headphone Malfunction
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Video Entertainment System Wireless Headphone Malfunction
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Diagnostic Fault Information
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Circuit
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Short to Ground
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Open/High Resistance
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Short to Voltage
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Signal Performance
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Video Display B+
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2
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1
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-
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-
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Remote Enable Control Circuit
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B1265 02, 3
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4
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5
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-
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DVD Audio Common Signal (-)
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6
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6
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6
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-
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Left DVD Audio Signal (+)
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7
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7
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7
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-
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Right DVD Audio Signal (+)
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8
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8
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8
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-
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DVD Video Signal (+)
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9
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9
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7
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-
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DVD Video Signal (-)
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9
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9
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9, 10
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-
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Infrared Remote Signal (+)
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11
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11
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11
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-
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Infrared Remote Signal (-)
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11
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11
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11
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-
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Video Mode Signal
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B1288 02, 12
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B1288 04, 12
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B1288 01, 12
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-
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Video Bright Signal
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B1289 02, 13
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B1289 04, 13
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B1289 01, 13
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-
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Ground Terminal 8
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-
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1
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-
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-
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Ground Terminal 14
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-
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1
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-
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-
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1. One or both seatback displays inoperative
2. Both seatback displays inoperative
3. All infotainment devices controlled by circuit inoperative, no sound from speakers
4. One or more infotainment devices controlled by circuit inoperative
5. Power state of all infotainment devices controlled by circuit cannot be controlled by radio
6. No or distorted audio heard in wireless headphones
7. No or distorted left channel audio heard in wireless headphones
8. No or distorted right channel audio heard in wireless headphones
9. No or distorted image in seatback display
10. Serious damage to radio can occur
11. Infrared remote control inoperative
12. Seatback display mode cannot be controlled/changed
13. Seatback display brightness cannot be controlled/adjusted
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Circuit/System Description
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The driver seatback DVD display contains the infrared transmitter for the wireless headphones. The audio that is sent over the DVD audio signal circuits is a varying AC voltage. The transmitter processes the signal and transmits the audio signals to the headphones. If the display is in the closed position, the infrared signals will not be available for the operation of the wireless headphones and the remote control.
Schematic Reference
Video System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Video Entertainment System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References
for scan tool information
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Circuit/System Verification
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Note
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Test or replace the headphone batteries before performing the circuit/system verification.
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1.
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Ignition ON, Radio ON, DVD playing, verify that the Rear Seat Entertainment System audio/video functions are working properly.
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3.
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Turn ON the wireless headphones. Verify the power indicator lamp on the wireless headphone illuminates.
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4.
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If the power indicator lamp does not illuminate, replace the wireless headphones.
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5.
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Ignition ON, Radio ON, DVD playing, verify that each headphone is working properly.
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6.
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If all of the headphones are inoperative, or the sound is distorted, refer to Circuit/System Testing.
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7.
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If only one of the headphones is not producing sound, or the sound is distorted, replace the appropriate set of headphones.
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1.
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Ignition OFF, disconnect the harness connector at the P22E driver seatback video display.
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2.
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Ignition OFF, scan tool disconnected, open driver door, wait five minutes, test for 20-25 Ω between the DVD audio low reference signal (-) circuits terminal 5 and ground.
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3.
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If greater than the specified range, test the low reference (-) circuit for an open/high resistance. If the circuits test normal, replace the A11 radio.
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4.
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Ignition ON, DVD playing with audio present, set the DMM to read min/max, test for a varying voltage greater than 50 mV from 10 mV-250 mV AC between the control circuits listed below and ground:
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•
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Left DVD audio control (+) - terminal 6
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•
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Right DVD audio control (-) - terminal 7
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5.
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If not within the specified range, test the control circuit for a short to voltage, short to ground, or an open/high resistance. If the circuits test normal, replace the A11 radio.
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6.
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If all circuits test normal, replace the headphones. If the headphones are still inoperative, replace the P22E driver seatback video display.
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Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
