Chrysler 300M 1999 Manual page 657

TEST 7A
REPAIRING BLANK SCREEN OR NO RESPONSE CONDITION ON OTIS
Perform TEST 1A Before Proceeding
START TEST 7A.
KEY OFF.
DISCONNECT THE
OTIS HARNESS
CONNECTOR.**
TURN IGNITION ON
(ENGINE OFF).
USING A VOLTMETER
MEASURE THE PCI
BUS CIRCUIT
FIG. 1
DISCONNECT THE
HEADLINER J/B
HARNESS
CONNECTOR.**
FIG. 2
REMOVE THE BODY
CONTROL MODULE
FROM THE JUNCTION
BLOCK.*
WITH AN OHMMETER,
MEASURE BETWEEN
GROUND AND THE
HEADLINER J/B CONN
PIN 4. FIG. 2
*Perform Verification TEST VER-2A.
NOTE: FOR LOCATIONS
OF ALL COMPONENTS.
SEE GENERAL INFO 4.0
USING AN OHMMETER,
MEASURE BETWEEN
GROUND AND THE
GROUND CIRCUIT.
FIG. 1
USING A VOLTMETER,
MEASURE THE FUSED
IGNITION SWITCH
OUTPUT CIRCUIT.
FIG. 1
,
.
USING A VOLTMETER,
MEASURE THE PCI
BUS CIRCUIT
(PIN 4).
FIG. 2
CONNECT A JUMPER
WIRE BETWEEN
GROUND AND THE...
IS THE RESISTANCE NO
BELOW 10.0 OHMS?
YES
IS THE VOLTAGE NO
ABOVE 10.0 VOLTS?
YES
DOES THE VOLTAGE YES
MODULATE ABOVE 0.3
VOLTS?
NO
DOES THE VOLTAGE YES
MODULATE ABOVE 0.3
VOLTS?
NO
JUNCTION BLOCK
20-WAY INTERNAL
CONNECTOR
CAVITY 10.
FIG. 3
IS THE RESISTANCE NO
BELOW 5.0 OHMS?
YES
**Check connectors - Clean / repair as necessary.
647
REPAIR THE OPEN
GROUND CIRCUIT.*
REPAIR THE OPEN
FUSED IGNITION
SWITCH OUTPUT
CIRCUIT.*
REPLACE THE
OVERHEAD TRAVEL
INFORMATION SYSTEM
(OTIS) MODULE.*
REPAIR THE OPEN
PCI BUS CIRCUIT
BETWEEN THE
JUNCTION BLOCK AND
THE OTIS.*
REPLACE THE
JUNCTION BLOCK.*
REPLACE THE BODY
CONTROL MODULE.*
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