Chrysler PT Cruiser. Manual - part 492

(4) Test the Heated Seat Element, refer to the pro-

cedure in the Heated Seats section of this manual.

(5) Disconnect the heated seat module connector

receptacle. Using an ohmmeter, check for continuity
between the ground circuit cavity and a good
ground. If OK, go to Step 6. If not OK, repair the
open ground circuit to ground as required.

(6) Disconnect the heated seat module connector

receptacle. Using an voltmeter, check for voltage on
the B+ circuit cavity. If OK, go to Step 7. If not OK,
repair the open B+ circuit as required.

(7) Replace the heated seat module with a known

good module. Test operation of the heated seat sys-
tem. If system works, OK repair complete. If system
is still inoperative a short or open exists in the
heated seat system wiring. Using Wiring Diagrams
as a guide, check the individual circuits until the
short or open is found.

REMOVAL

WARNING:

THERE ARE

MANY

SHARP

METAL

EDGES ON THE SEAT CUSHION FRAME AND SEAT
ADJUSTER RAILS UNDER THE SEAT. WHEN PER-
FORMING THIS SERVICE, A LONG-SLEEVED SHIRT
AND GLOVES SHOULD BE WORN IN ORDER TO
AVOID UNNECESSARY CUTS AND ABRASIONS TO
EXPOSED SKIN.

(1) Move the driver power seat to its full up and

full rear stop positions.

(2) Disconnect and isolate the battery negative

cable.

(3) Working under the seat, release the two plastic

push-in fasteners from either the module or the
mounting holes in the power seat cushion pan (Fig.
10).

(4) Disconnect the power seat wire harness connec-

tor from the heated seat module connector receptacle.

(5) Remove the heated seat module from the power

seat track.

INSTALLATION

(1) If the two plastic push-in fasteners for the

heated seat module were damaged during removal,
install new fasteners onto the heated seat module.

(2) Reconnect the power seat wire harness connec-

tor to the heated seat module connector receptacle.
Be certain that the cavities in the power seat wire
harness connector are aligned with the terminals in
the heated seat module connector receptacle before
pushing the connector firmly into place.

(3) Install the heated seat module on the power

seat cushion pan.

(4) Reconnect the battery negative cable.

Fig. 10 Heated Seat Module Location- Typical

1 - SEAT CUSHION FRAME
2 - HEATED SEAT MODULE
3 - WIRE HARNESS CONNECTOR
4 - POWER SEAT TRACK FRONT BRACKET

8G - 18

HEATED SEAT SYSTEM

HEATED SEAT MODULE (Continued)

HORN

TABLE OF CONTENTS

page

HORN SYSTEM

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . . 1

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

DIAGNOSIS AND TESTING - HORN SYSTEM

. . . 1

HORN

DIAGNOSIS AND TESTING - HORN

. . . . . . . . . . 2

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 3

HORN RELAY

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 3

HORN SWITCH

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . . 3

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

HORN SYSTEM

DESCRIPTION

A single note (domestic) or dual note (export) elec-

tric horn system is installed on this vehicle.

The horn system features electromagnetic horn(s).

The horn system includes the following major compo-
nents:

• Horn - The horn(s) are located on the right side

frame rail.

• Horn Relay - The horn relay is located in the

Junction Block (JB).

• Horn Switch - The horn switch is molded into

the driver airbag.

OPERATION

The horn system operates on battery current

received through a fuse in the Power Distribution
Center (PDC). The horn system circuit is designed so
that the system will remain operational, regardless
of the ignition switch position.

DIAGNOSIS AND TESTING - HORN SYSTEM

HORN SYSTEM TEST TABLE

CONDITION

POSSIBLE CAUSE

CORRECTION

HORN SOUNDS CONTINUOUSLY.

NOTE: IMMEDIATELY UNPLUG HORN

AND RELAY IN THE JUNCTION

BLOCK

1. INOPERATIVE HORN

RELAY.

1. REPLACE RELAY, IF

INOPERATIVE

2. HORN CONTROL

CIRCUIT TO RELAY

SHORTED TO GROUND.

2. CHECK TERMINAL 65 IN PDC

FOR CONTINUITY TO GROUND

INDICATES:

A. WIRING HARNESS SHORTED TO

GROUND.

B. FIND THE SHORT AND REPAIR

AS NECESSARY.

4. PINCHED HORN

SWITCH WIRE UNDER

DRIVER AIRBAG MODULE.

4. REPLACE DRIVER AIRBAG.

5. INOPERATIVE HORN
SWITCH

5. REPLACE DRIVER AIRBAG.

HORN

8H - 1

CONDITION

POSSIBLE CAUSE

CORRECTION

HORN SOUND INTERMITTENTLY AS
THE STEERING WHEEL IS TURNED.

1. HORN RELAY CONTROL
CIRCUIT X3 IS SHORTED
TO GROUND INSIDE
STEERING WHEEL.

1. REMOVE DRIVER AIRBAG AND
CHECK FOR RUBBING OR LOOSE
WIRE/CONNECTOR, REPAIR AS
NECESSARY.

2. PINCHED HORN
SWITCH WIRE UNDER
DRIVER AIRBAG.

2. REPLACE DRIVER AIRBAG.

3. INOPERATIVE HORN
SWITCH.

3. REPLACE DRIVER AIRBAG.

HORN DOES NOT SOUND

1. CHECK FUSE 23 IN THE
PDC.

1. REPLACE FUSE IF
INOPERATIVE.

2. NO VOLTAGE AT HORN
RELAY TERMINALS 62 & 66
AND FUSE IS OK.

2. NO VOLTAGE, REPAIR PDC AS
NECESSARY.

3. OPEN CIRCUIT FROM
TERMINAL 65 OF THE
RELAY TO HORN SWITCH
X3 CIRCUIT.

3. REPAIR CIRCUIT AS
NECESSARY.

4. INOPERATIVE OR
DAMAGED HORN.

4. VOLTAGE AT HORN WHEN HORN
SWITCH IS PRESSED, REPLACE
HORN.

5. INOPERATIVE HORN
SWITCH

5. REPLACE DRIVER AIRBAG.

FUSE BLOWS WHEN HORN IS
BLOWN

1. SHORT CIRCUIT IN
HORN OR HORN WIRING

1. REMOVE HORN RELAY, CHECK
FOR SHORTED HORN OR HORN
WIRING. DISCONNECT HORN WIRE
HARNESS TO ISOLATE SHORT
AND REPAIR AS NECESSARY.

FUSE BLOWS WITHOUT BLOWING
HORN

1. SHORT CIRCUIT

1. REMOVE RELAY, INSTALL NEW
FUSE, IF FUSE DOES NOT BLOW
REPLACE HORN RELAY. IF FUSE
BLOWS WITH RELAY REMOVED,
CHECK FOR SHORT TO GROUND
WITH OHMMETER BETWEEN
TERMINALS 62 & 66 AND THE
FUSE TERMINAL. REPAIR AS
NECESSARY.

NOTE: FOR WIRING REPAIRS REFER
TO GROUP 8W, WIRE DIAGRAMS.

HORN

DIAGNOSIS AND TESTING - HORN

(1) Disconnect wire connector at horn.
(2) Using a voltmeter, connect one lead to ground

terminal and the other lead to the positive wire ter-
minal.

(3) Depress

the

horn

switch,

battery

voltage

should be present.

(4) If no voltage,(Refer to 8 - ELECTRICAL/HORN

- DIAGNOSIS AND TESTING). If voltage is OK, go
to Step 5.

(5) Using ohmmeter, test ground wire for continu-

ity to ground.

(6) If no ground repair as necessary.
(7) If wires test OK and horn does not sound,

replace horn.

8H - 2

HORN

HORN SYSTEM (Continued)

REMOVAL

(1) Disconnect and isolate the battery negative

cable.

(2) Remove the right front wheelhouse splash

shield.

(3) Disconnect the harness connector.
(4) Remove the fastener securing the horn assem-

bly to the vehicle (Fig. 1).

INSTALLATION

(1) Install the fastener securing the horn assembly

to the vehicle.

(2) Connect the harness connector.
(3) Install

the

right

front

wheelhouse

splash

shield.

(4) Connect the battery negative cable.

HORN RELAY

REMOVAL

(1) Disconnect and isolate the battery negative

cable.

(2) Remove cover from Power Distribution Center

(PDC).

(3) Using special tool C-4817, grip the relay by the

sides and pull upward with an even effort (Fig. 2).

INSTALLATION

(1) Align relay with Power Distribution Center

(PDC) and press into position.

(2) Install cover to PDC.
(3) Connect battery negative cable.

HORN SWITCH

DESCRIPTION

WARNING:
ON VEHICLES EQUIPPED WITH AN AIRBAG, REFER
TO RESTRAINT SYSTEMS FOR WARNINGS AND
CAUTIONS

BEFORE

SERVICING

THE

HORN

SWITCH.

The horn switch is mounted inside the driver air-

bag. The horn switch is serviced with the driver air-
bag

(Refer

ELECTRICAL/RESTRAINTS/

DRIVER AIRBAG - REMOVAL).

OPERATION

When the Driver Airbag Cover is pressed, the horn

switch makes contact to ground. The ground signal is
carried to the horn relay and the horn sounds. The
horn switch grounds to the airbag housing.

REMOVAL

WARNING:
ON VEHICLES EQUIPPED WITH AN AIRBAG, REFER
TO RESTRAINT SYSTEMS FOR WARNINGS AND
CAUTIONS

BEFORE

SERVICING

THE

HORN

SWITCH.

The horn switch is serviced with the driver airbag

(Refer to 8 - ELECTRICAL/RESTRAINTS/DRIVER
AIRBAG - REMOVAL).

Fig. 1 HORN MOUNTING (EXPORT SHOWN)

Fig. 2 RELAY REMOVAL

1 - SPECIAL TOOL C-4817
2 - RELAY

HORN

8H - 3

HORN (Continued)

Content .. 490 491 492 493 ..