Chrysler 300M 1999 Manual page 219

TEST 21A
REPAIRING INCORRECT TEMPERATURE CONTROL IN SUN OR SHADE
Perform TEST 1A Before Proceeding
START TEST 21A.
DISCONNECT THE SUN
SENSOR HARNESS
CONNECTOR.**
KEY ON.
USING A VOLTMETER,
MEASURE THE SUN
SENSOR SIGNAL
CIRCUIT. FIG. 1
CONNECT A JUMPER
WIRE BETWEEN THE
SUN SENSOR SIGNAL
CKT AND SENSOR
GROUND CKT. FIG. 1
DISCONNECT THE
JUMPER WIRE.
KEY OFF. REMOVE THE
JUMPER WIRE.
DISCONNECT THE BODY
CONTROL MODULE...
USING AN OHMMETER,
MEASURE THE SUN
SENSOR SIGNAL CKT
BETWEEN...
*Perform Verification TEST VER-2A.
NOTE: FOR LOCATION
OF ALL COMPONENTS.
SEE GENERAL INFO 4.0
USING THE DRB,
SELECT "BODY
COMPUTER" "SENSORS" BELOW 4.8 VOLTS?
AND READ THE "SUN
SENSOR" VOLTAGE.
ABOVE 5.2 VOLTS?
"SUN SENSOR: BELOW
CONNECT A JUMPER
WIRE BETWEEN SUN
SENSOR SIGNAL CKT "SUN SENSOR: BELOW
AND GROUND.
FIG. 1
C2 HARNESS
CONNECTOR.
THE BODY CONTROL
MODULE AND THE SUN IS THE RESISTANCE
SENSOR HARNESS BELOW 5.0 OHMS?
CONNECTORS.
FIG. 2
**Check connectors - Clean / repair as necessary.
209
IS THE VOLTAGE YES REPLACE THE BODY
CONTROL MODULE.*
NO
REPAIR THE SUN
IS THE VOLTAGE YES SENSOR SIGNAL
CIRCUIT FOR A SHORT
TO VOLTAGE. IF OK,
REPLACE THE BCM.
NO
DOES THE DRB
DISPLAY YES REPLACE THE SUN
0.2 VOLT"?
NO
DOES THE DRB
DISPLAY YES REPAIR THE OPEN
SENSOR GROUND
0.2 VOLT"? CIRCUIT.*
NO
NO REPAIR THE OPEN
SUN SENSOR SIGNAL
CIRCUIT.*
YES
REPLACE THE BODY
CONTROL MODULE.*
SENSOR.*
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