Chrysler RAM TRUCK 2500 1994 Service Manual page 447

8G - 2 HORNS
•
(1) Unplug horn relay from connector inside PDC.
Plug in a known good relay. If horns stop blowing, re­
lay is defective and must be replaced. If horns still
sound, replace original relay and proceed as follows:
(a) Connect one lead of test lamp to relay termi­
nal 86 (battery) on the relay bank.
(b) Connect the other lead to relay terminal 85
(switch) on the relay bank. Should the lamp illumi­
nate, either the wire from the horn switch is
shorted to ground or the horn switch is defective.
Continue to next step.
WARNING: BEFORE BEGINNING ANY AIRBAG SYS­
TEM COMPONENT REMOVAL OR INSTALLATION,
REMOVE AND ISOLATE THE NEGATIVE (-) C A B L E
FROM THE BATTERY THIS IS THE ONLY SURE
WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE
TO DO THIS COULD RESULT IN ACCIDENTAL AIR-
B A G DEPLOYMENT AND POSSIBLE INJURY
WAIT 2 MINUTES FOR THE RESERVE CAPACITOR
TO DISCHARGE BEFORE REMOVING OR WORKING
ON ANY AIRBAG SYSTEM COMPONENTS.
(2) Disconnect and isolate the battery negative ca­
ble.
(3) Gain access to the horn switch connectors as
described in Horn Switch Replacement.
(4) Disconnect horn wires located in the lower por­
tion of steering wheel.
(5) Repeat the previous test and if the test lamp
still illuminates, wire is shorted and should be re­
paired. If test lamp does not illuminate, horn switch
is defective and must be replaced.
S E R V I C E P R O C E D U R E S
HORN SWITCH REPLACEMENT
WARNING: B E F O R E BEGINNING ANY A I R B A G S Y S ­
TEM COMPONENT REMOVAL OR INSTALLATION,
R E M O V E AND ISOLATE T H E NEGATIVE (-) C A B L E
FROM T H E BATTERY. THIS IS T H E ONLY S U R E
WAY TO D I S A B L E T H E A I R B A G S Y S T E M . F A I L U R E
TO DO THIS C O U L D R E S U L T IN A C C I D E N T A L AIR-
B A G D E P L O Y M E N T AND P O S S I B L E INJURY.
WAIT 2 MINUTES F O R T H E R E S E R V E CAPACITOR
TO D I S C H A R G E B E F O R E REMOVING OR WORKING
ON ANY A I R B A G S Y S T E M OOMPONENTS.
REMOVAL
(1) Disconnect negative cable from battery.
(2) From underside of steering wheel, remove
speed control switch mounting screws (Fig. 1), i f
equipped.
Fig. 1 Speed Control Switch Removal
(3) Pull switches from wheel and unplug connector
(Fig. 2).
(4) Using a small screwdriver remove right rear
steering wheel cover (Fig. 3).
Fig. 3 Right Rear Steering Wheel Cover