Diagnostic System Check - Entertainment
Always perform the Diagnostic System Check - Entertainment before proceeding
with these diagnostic procedures. Refer to
Diagnostic System Check - Entertainment System
in Entertainment.
Video Entertainment System Inoperative
Important: The following information lists the most probable cause of the concern to the
least probable cause, followed by the appropriate test for the condition. If the list
leads to the replacement of a component, always inspect for a poor connection before
proceeding with the replacement. Refer to
Testing for Intermittent Conditions and Poor Connections
and
Connector Repairs
in Wiring Systems.
Schematic Reference:
Video System Schematics
| • | Battery Positive Circuit Open. |
| | Test battery positive circuit system voltage. If voltage is not present, check
battery positive circuits for an open. Refer to
Circuit Testing
and
Wiring Repairs
in Wiring Systems. If no open is found, replace radio. Refer to
Radio Replacement
in Entertainment. |
| • | 5 Volt Reference Circuit open or shorted to ground. |
| | Test 5 volt reference circuit for 5 volts. If voltage is not present, check
circuit for an open or short to ground. Refer to
Circuit Testing
and
Wiring Repairs
in Wiring Systems. If no open is found, replace radio. Refer to
Radio Replacement
in Entertainment. |
| • | DVD Head to Display Serial Data circuit open or shorted to battery positive. |
| | At the overhead display connector, check for varying DC voltage on the DVD Head
to Display Serial Data circuit. If no varying DC voltage is found, check for an open
or a short to battery positive. Refer to
Circuit Testing
and
Wiring Repairs
in Wiring Systems. If no open or short to battery positive is found,
replace the radio. Refer to
Radio Replacement
in Entertainment. |
| • | Display to DVD Head Serial Data circuit shorted to battery positive or
ground. |
