Code - Chrysler 300M 1999 Manual

REPAIRING LEFT HEATED SEAT SWITCH OPEN/SHORTED TO GROUND TROUBLE
TEST 25A

CODE

Perform TEST 1A Before Proceeding
START TEST 25A.
DISCONNECT THE
MHSMM "C1" HARNESS
CONNECTOR.**
DISCONNECT THE LEFT
SEAT HEATER SWITCH
HARNESS CONNECTOR.**
FIG. 2
CONNECT A JUMPER
WIRE FROM THE LEFT
SEAT HEATER SW MUX
CKT (CAV 18) TO GND.
FIG. 1
*Perform Verification TEST VER-4A.
NOTE: FOR LOCATION
OF ALL COMPONENTS
SEE GENERAL INFO 4.0
USING A VOLTMETER,
MEASURE LEFT SEAT
HEATER SW MUX CKT
(CAV 18) TO GROUND.
FIG. 1
USING AN OHMMETER,
MEASURE LEFT SEAT
HEATER SWITCH MUX
CKT (CAV 3) TO GND.
FIG. 2
USING AN OHMMETER,
MEASURE LEFT SEAT
HEATER SWITCH MUX
CKT (CAV 3) TO GND.
FIG. 2
**Check connectors - Clean / repair as necessary.
489
IS THE VOLTAGE YES
ABOVE 10.0 VOLTS?
NO
IS THE RESISTANCE YES
BELOW 100.0 OHMS?
NO
IS THE RESISTANCE NO
BELOW 5.0 OHMS?
YES
REPLACE THE MEMORY
HEATED SEAT/MIRROR
MODULE.*
REPAIR THE LEFT
SEAT HEATER SWITCH
MUX CKT FOR A
SHORT TO GROUND.*
REPAIR THE OPEN
LEFT SEAT HEATER
SWITCH MUX CKT.*
REPLACE THE SEAT
HEATER SWITCH.*
M
E
M
O
R
Y
S
Y
S
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E
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