Repairing A/C Control Mode Door Input Shorted To Ground Trouble Code - Chrysler 300M 1999 Manual

REPAIRING A/C CONTROL MODE DOOR INPUT SHORTED TO GROUND TROUBLE
TEST 7A
CODE
Perform TEST 1B Before Proceeding
START TEST 7A.
KEY OFF. DISCONNECT
THE A/C-HEATER
CONTROL "C1" HARNESS
CONNECTOR.**
FIG. 1
USING AN OHMMETER,
MEASURE BETWEEN
GROUND AND THE MODE
SWITCH MUX CIRCUIT.
FIG. 1
DISCONNECT THE BODY
CONTROL MODULE C2
HARNESS CONNECTOR.**
SEE GENERAL INFO 4.0
*Perform Verification TEST VER-2A.
ERASE THE TROUBLE
CODE.
WITH AN OHMMETER,
MEASURE BETWEEN THE
SENSOR GROUND CKT
AND THE MODE SWITCH
MUX CKT. FIG. 1
USING AN OHMMETER,
MEASURE BETWEEN
GROUND AND THE MODE
SWITCH MUX CIRCUIT.
FIG. 1
**Check connectors - Clean / repair as necessary.
411
IS THE RESISTANCE YES
BELOW 5.0 OHMS?
NO
IS THE RESISTANCE NO
BELOW 100.0 OHMS?
YES
IS THE RESISTANCE YES
BELOW 5.0 OHMS?
NO
REPAIR THE MODE
SWITCH MUX CKT FOR A
SHORT TO THE SENSOR
GROUND CKT. IF OK,
REPLACE THE BCM.*
REPLACE THE
A/C-HEATER CONTROL
HEAD.*
REPAIR THE MODE
SWITCH MUX CIRCUIT
FOR A SHORT TO
GROUND.*
REPLACE THE BODY
CONTROL MODULE.*
M
A
N
U
A
L
T
E
M
P
E
R
A
T
U
R
E
C
O
N
T
R
O
L
S
Y
S
T
E
M