Chrysler 300M 1999 Manual page 197

TEST 16A
CONTINUED - REPAIRING INOPERATIVE BLOWER MOTOR
TEST 16A
CONTINUED FROM
THE PREVIOUS
PAGE.
USING A VOLTMETER,
MEASURE THE IGNITION
SWITCH OUTPUT CKT
FOR FUSE #23.
FIG. 1
DISCONNECT THE ATC
POWER MODULE HARNESS
CONNECTOR.**
SEE GENERAL INFO 4.0
KEY OFF.
USING AN OHMMETER,
MEASURE BETWEEN
GROUND AND THE
GROUND CKT. FIG. 2
USING AN OHMMETER,
MEASURE BETWEEN
GROUND AND THE
BLOWER MOTOR CONTROL
CKT. FIG. 2
DISCONNECT THE BODY
CONTROL MODULE C2
HARNESS CONNECTOR.**
SEE GENERAL INFO 4.0
DISCONNECT THE
BLOWER MOTOR 2-WAY
HARNESS CONNECTOR.**
SEE GENERAL INFO 4.0
*Perform Verification TEST VER-2A.
REINSTALL THE
FUSE.
TURN THE IGNITION
ON.
USING A VOLTMETER,
MEASURE THE FUSED
IGNITION SWITCH
OUTPUT CKT.
FIG. 2
RECONNECT THE ATC
POWER MODULE
HARNESS CONNECTOR.
TURN IGNITION ON.
**Check connectors - Clean / repair as necessary.
187
IS THE VOLTAGE NO
ABOVE 10.0 VOLTS?
THE IGNITION SWITCH
YES
IS THE VOLTAGE NO
ABOVE 10.0 VOLTS?
YES
IS THE RESISTANCE NO
BELOW 5.0 OHMS?
YES
IS THE RESISTANCE YES
BELOW 5.0 OHMS? CIRCUIT FOR A SHORT
NO
DOES THE BLOWER YES
MOTOR RUN AT FULL
SPEED?
NO
REPAIR THE OPEN
IGNITION SWITCH
OUTPUT CKT BETWEEN
AND THE FUSE.*
REPAIR THE OPEN
FUSED IGNITION
SWITCH OUTPUT
CIRCUIT.*
REPAIR THE OPEN
GROUND CIRCUIT.*
REPAIR THE BLOWER
MOTOR CONTROL
TO GROUND. IF OK,
REPLACE THE BCM.*
REPLACE THE BODY
CONTROL MODULE.*
CONTINUE TEST
16A ON THE NEXT
PAGE.
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