Repairing Atc Aspirator Or In-Car Temperature Sensor Failure Trouble Code - Chrysler 300M 1999 Manual

REPAIRING ATC ASPIRATOR OR IN-CAR TEMPERATURE SENSOR FAILURE
TEST 8A
TROUBLE CODE
Perform TEST 1B OR 1A Before Proceeding
START TEST 8A.
COMPLETELY COVER THE
ASPIRATOR INLET WITH
A SMALL PIECE OF
TISSUE PAPER.
FIG. 1
KEY OFF. STAY IN THE
VEHICLE AND CLOSE
ALL DOORS AND ENSURE
COURTESY LAMPS ARE
OFF.
DISCONNECT THE ATC
CONTROL MODULE
HARNESS
CONNECTOR.**
TURN IGNITION ON.
*Perform Verification TEST VER-2A.
NOTE: FOR LOCATION
OF ALL COMPONENTS.
SEE GENERAL INFO 4.0
NOTE: THE TISSUE
SHOULD HOLD IN PLACE
BECAUSE OF THE AIR
DRAWN IN FROM THE
ASPIRATOR.
WAIT 3 MINUTES.
OPEN AND CLOSE THE
LEFT FRONT DOOR
AND OBSERVE THE
ASPIRATOR MOTOR.
USING A VOLTMETER,
MEASURE THE IN-CAR
TEMP SENSOR SIGNAL
CIRCUIT.
FIG. 2
**Check connectors - Clean / repair as necessary.
145
TURN IGNITION ON
(ENGINE OFF).
IS THE ASPIRATOR NO
MOTOR RUNNING?
YES
DOES THE ASPIRATOR
MOTOR RUN FOR APPROX NO
30 SECONDS AFTER THE
COURTESY LAMPS HAVE
DIMMED OUT?
YES
IS THE VOLTAGE YES
ABOVE 5.3 VOLTS?
NO
IS THE VOLTAGE YES
ABOVE 4.0 VOLTS?
NO
PERFORM TEST
8C.
PERFORM TEST
8D.
REPAIR THE IN-CAR
TEMP SENSOR SIGNAL
CIRCUIT FOR A SHORT
TO VOLTAGE. IF OK,
REPLACE THE BCM.*
PERFORM TEST
8B.
CONTINUE TEST
8A ON THE NEXT
PAGE.
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