Repairing Inoperative Temp/Blend Air Door - Chrysler 300M 1999 Manual

TEST 15A

REPAIRING INOPERATIVE TEMP/BLEND AIR DOOR

Perform TEST 1A Before Proceeding
START TEST 15A.
OBSERVE THE "TEMP
UP" AND "TEMP DOWN"
SWITCHES WHILE
PRESSING THE
SWITCHES ON THE ATC.
DISCONNECT THE
BLEND DOOR HARNESS
CONNECTOR.**
MONITOR THE TEST
LIGHT WHILE PRESSING
(TURNING) THE TEMP
SWITCH TO THE FULL
HOT (HI) POSITION.
CONNECT A TEST
LIGHT BETWEEN THE
COMMON DOOR DRIVER
CIRCUIT AND
GROUND. FIG. 1
MONITOR THE TEST
LIGHT WHILE PRESSING
(TURNING) THE TEMP
SWITCH TO THE FULL
COLD (LO) POSITION.
*Perform Verification TEST VER-2A.
NOTE: IF VEHICLE
IS EQUIPPED WITH
MANUAL TEMP
CONTROL, DISREGARD
THE FIRST STEP.
CONNECT A TEST
LIGHT BETWEEN THE
BLEND DOOR DRIVER
CIRCUIT AND
GROUND. FIG. 1
NOTE: THE TEST LIGHT
SHOULD FLASH WHILE
IN THE 67 TO 81
DEGREE RANGE
(ATC DISPLAY RANGE).
WITH THE
TEMPERATURE IN THE
FULL HOT (HI)
POSITION.
NOTE: THE TEST LIGHT
SHOULD FLASH WHILE
IN THE 81 TO 67
DEGREE RANGE
(ATC DISPLAY RANGE).
**Check connectors - Clean / repair as necessary.
181
WITH THE DRB ENTER
"BODY", "AUTOMATIC
TEMP CONTROL" THEN
"INPUT/OUTPUT".
DO THE SWITCH
STATES CHANGE FROM NO
OPEN TO CLOSED
WHEN THE SWITCH IS
DEPRESSED?
YES
PRESS (TURN) THE
TEMPERATURE
CONTROL SWITCH TO
THE FULL COLD (LO)
POSITION.
DID THE TEST LIGHT
FLASH BETWEEN 67 NO
AND 81 DEGREES
(APPROXIMATELY 5
SECONDS FOR MTC)?
YES
DID THE TEST LIGHT
FLASH BETWEEN 81 NO
AND 67 DEGREES
(APPROXIMATELY 5
SECONDS FOR MTC)?
YES
REPLACE THE
AUTOMATIC
TEMPERATURE
CONTROL HEAD.*
CONTINUE TEST
15A ON THE NEXT
PAGE.
CONTINUE TEST
15A ON THE NEXT
PAGE.
REPLACE THE BLEND
DOOR ACTUATOR.*
A
U
T
O
M
A
T
I
C
T
E
M
P
E
R
A
T
U
R
E
C
O
N
T
R
O
L
S
Y
S
T
E
M