Chrysler 300M 1999 Manual page 437

TEST 11A
REPAIRING INOPERATIVE CONTROL HEAD SWITCH
Perform TEST 1A Before Proceeding
START TEST 11A.
USING THE DRB
ENTER "BODY
COMPUTER" THEN
"SENSORS" AND...
PRESS AND HOLD THE
REAR DEFOGGER
SWITCH.
*Perform Verification TEST VER-2A.
OBSERVE THE "MODE
SWITCH MUX"
VOLTAGE.
**Check connectors - Clean / repair as necessary.
427
IS THE PROBLEM YES
WITH THE A/C
SWITCH?
NO
DID THE VOLTAGE DROP
TO APPROXIMATELY 0.2 NO
VOLTS WHEN THE
SWITCH WAS PRESSED?
YES
CONTINUE TEST
11A ON THE NEXT
PAGE.
REPLACE THE
A/C-HEATER CONTROL
HEAD.*
SWITCH IS
OPERATING PROPERLY
AT THIS TIME.
M
A
N
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P
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R
A
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C
O
N
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L
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Y
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