Chrysler 300M 1999 Manual page 313

TEST 3A
CONTINUED - REPAIRING DIMMING LEVEL SWITCH FAILURE
TEST 3A
CONTINUED FROM
THE PREVIOUS
PAGE.
MAKE SURE ALL
DOORS ARE CLOSED,
THE IGNITION IS
OFF AND ALL LAMPS
ARE TURNED OFF.
KEY ON.
WITH A VOLTMETER,
MEASURE THE PANEL
LAMPS DIMMER SIGNAL
CIRCUIT. FIG. 1
WITH A TEST LIGHT
CONNECTED TO GROUND,
PROBE THE PANEL
LAMPS DIMMER SIGNAL
CIRCUIT. FIG. 1
*Perform Verification TEST VER-2A.
DISCONNECT THE
HEADLAMP SWITCH
HARNESS
CONNECTOR.**
WITH AN OHMMETER,
MEASURE BETWEEN
GROUND AND THE
HEADLAMP SWITCH
RETURN CKT. FIG. 1
**Check connectors - Clean / repair as necessary.
303
IS THE RESISTANCE NO
BELOW 20.0 OHMS?
YES
IS THE VOLTAGE NO
ABOVE 10.0 VOLTS?
YES
IS THE TEST LIGHT YES
ILLUMINATED?
NO
REPAIR THE OPEN
HEADLAMP SWITCH
RETURN CIRCUIT. IF
OK, REPLACE THE
BCM.*
REPAIR THE OPEN
PANEL LAMPS DIMMER
SIGNAL CIRCUIT. IF
OK, REPLACE THE
BCM.*
REPAIR THE PANEL
LAMPS DIMMER SIGNAL
CIRCUIT FOR A SHORT
TO VOLTAGE. IF OK,
REPLACE THE BCM.*
REPLACE THE
HEADLAMP SWITCH.*
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