Jeep Grand Cherokee WK. Manual - part 256
VIDEO SYSTEM DIAGNOSIS
CONDITION
POSSIBLE CAUSES
CORRECTION
NO VIDEO (DVD
PLAYER WILL NOT
LOAD OR EJECT)
1. FUSE INOPERATIVE.
1. CHECK FUSES. REPLACE FUSES
IF REQUIRED.
2. LOOSE OR DAMAGED DVD
PLAYER CONNECTOR
2. CHECK FOR LOOSE OR
CORRODED DVD PLAYER
CONNECTOR (16 PIN). REPAIR OR
REPLACE AS REQUIRED.
3. LOOSE OR DAMAGED
WIRING/DVD PLAYER
INOPERATIVE
3. CHECK PIN 1 (B+) AND PIN 9
(GROUND) OF THE 16 PIN
CONNECTOR, THEN CHECK PIN 1
(B+) AND PIN 7 (GROUND) OF THE
12 PIN CONNECTOR. IF THE 16 PIN
CONNECTOT DOES NOT SHOW
VOLTAGE, THE 12 PIN
CONNECTOR WILL NOT SHOW
VOLTAGE (THE 12 PIN IS FED
FROM THE 16 PIN). IF VOLTAGE IS
OK ON THE 16 PIN, BUT NOT
PRESENT ON THE 12 PIN, UNPLUG
THE 12 PIN HARNESS FROM THE
PLAYER AND CHECK THE
CONNECTOR PINSON THE BACK
OF THE PLAYER. IF VOLTAGE IS
PRESENT ON THE 12 PIN
CONNECTOR, THE SCREEN OR
THE 12 PIN HARNESS SHOULD BE
REPLACED. IF THERE IS STILL NO
VOLTAGE ON THE 12 PIN
CONNECTOR, THE DVD PLAYER
SHOULD BE REPLACED.
4. GROUND CONNECTION
DAMAGED
4. CHECK FOR CONTINUITY
BETWEEN DVD PLAYER AND A
KNOWN GOOD GROUND. THERE
SHOULD BE CONTINUITY. REPAIR
GROUND IF REQUIRED.
5. DVD PLAYER DAMAGED
5. EXCHANGE OR REPLACE DVD
PLAYER IF REQUIRED.
6. DVD DAMAGED.
AVOID USING CD’S OR DVD’S
THAT HAVE ADHESIVE TYPE
LABELS, AS THEY MAY
CAUSE THE DISC TO
BECOME JAMMED.
6. INSERT KNOWN GOOD DVD AND
TEST OPERATION.
NO DISPLAY. AUDIO
HEARD THROUGH
SPEAKERS
1. LOOSE OR DAMAGED
CONNECTORS
1. CHECK FOR LOOSE OR
CORRODED DVD PLAYER
CONNECTOR (12 PIN). CHECK FOR
LOOSE OR CORRODED VIDEO
SCREEN CONNECTOR. REPAIR IF
REQUIRED. CHECK FOR LOOSE
OR DAMAGED IN-LINE
CONNECTOR.
8A - 160
AUDIO/VIDEO - SERVICE INFORMATION
WK