Chrysler PT Cruiser. Manual — part 507
(5) After five seconds, the displayed zone will auto-
matically be set in the compass mini-trip computer
module memory and normal operation will resume.
(6) Confirm that the correct directions are now
indicated by the compass.
COMPASS DEMAGNETIZING
A degaussing tool (Special Tool 6029) is used to
demagnetize, or degauss, the overhead console for-
ward mounting screw and the roof panel above the
overhead console. Equivalent units must be rated as
continuous duty for 110/115 volts and 60 Hz. They
must also have a field strength of over 350 gauss at 7
millimeters (0.25 inch) beyond the tip of the probe.
To demagnetize the roof panel and the overhead
console forward mounting screw, proceed as follows:
(1) Be certain that the ignition switch is in the Off
position, before you begin the demagnetizing proce-
dure.
(2) Connect the degaussing tool (Fig. 3)to an elec-
trical outlet, while keeping the tool at least 61 centi-
meters (2 feet) away from the compass unit.
(3) Slowly approach the head of the overhead con-
sole forward mounting screw with the degaussing
tool connected.
(4) Contact the head of the screw with the plastic
coated tip of the degaussing tool for about two sec-
onds.
(5) With the degaussing tool still energized, slowly
back it away from the screw. When the tip of the tool
is at least 61 centimeters (2 feet) from the screw
head, disconnect the tool.
(6) Place a piece of paper approximately 22 by 28
centimeters (8.5 by 11 inches), oriented on the vehicle
lengthwise from front to rear, on the center line of
the roof at the windshield header (Fig. 4). The pur-
pose of the paper is to protect the roof panel from
scratches, and to define the area to be demagnetized.
(7) Connect the degaussing tool to an electrical
outlet, while keeping the tool at least 61 centimeters
(2 feet) away from the compass unit.
(8) Slowly approach the center line of the roof
panel at the windshield header, with the degaussing
tool connected.
(9) Contact the roof panel with the plastic coated
tip of the degaussing tool. Be sure that the template
is in place to avoid scratching the roof panel. Using a
slow, back-and-forth sweeping motion, and allowing
13 millimeters (0.50 inch) between passes, move the
tool at least 11 centimeters (4 inches) to each side of
the roof center line, and 28 centimeters (11 inches)
back from the windshield header.
(10) With the degaussing tool still energized,
slowly back it away from the roof panel. When the
tip of the tool is at least 61 centimeters (2 feet) from
the roof panel, disconnect the tool.
(11) Calibrate the compass and adjust the compass
variance. Refer to Compass Variation Adjustment
and Compass Calibration in this section for the
procedures.
REMOVAL
(1) Disconnect and isolate the negative battery
cable.
(2) Grasp the front of the overhead console and
pull downward to disconnect the front retaining clips.
(3) Slide the overhead console forward to disen-
gage the rear tabs from the headliner.
(4) Disconnect the overhead console wire connector.
(5) Unsnap compass module from inner roof panel.
Push module all the way forward to disengage the
front retaining clip. Once the front clip is discon-
nected, push the module all the way rearward to dis-
engage the rear retaining clip.
Fig. 3 Degaussing Tool 6029
Fig. 4 Roof Demagnetizing Pattern
8M - 6
OVERHEAD CONSOLE
PT
OVERHEAD CONSOLE (Continued)
(6) Remove console from vehicle.
INSTALLATION
(1) Position overhead console into vehicle and snap
compass module onto inner roof panel.
(2) Connect overhead console wire harness connec-
tor.
(3) Engage the rear tabs on the overhead console
into the headliner.
(4) Align the front retaining clips of the overhead
console with the corresponding holes in the inner roof
panel and firmly snap into place.
(5) Connect the battery negative cable.
(6) Calibrate compass (Refer to 8 - ELECTRICAL/
OVERHEAD
CONSOLE
-
STANDARD
PROCE-
DURE).
SPECIAL TOOLS
OVERHEAD CONSOLE
AMBIENT TEMP SENSOR
DESCRIPTION
Ambient air temperature is monitored by the com-
pass/temperature display unit. It receives a hard
wired input from the ambient temperature sensor.
The ambient temperature sensor is a variable resis-
tor mounted to a bracket that is secured with a nut
to the bracket in front of the A/C condenser, behind
the radiator grille.
The
ambient
temperature
sensor
cannot
be
adjusted or repaired and, if faulty or damaged, it
must be replaced.
OPERATION
The ambient temperature sensor is a variable
resistor that operates on a five-volt reference signal.
The resistance in the sensor changes as temperature
changes, changing the temperature sensor signal cir-
cuit voltage to compass/temperature display unit.
Based upon the resistance in the sensor, the com-
pass/temperature display unit senses a specific volt-
age on the temperature sensor signal circuit, which it
is programmed to correspond to a specific tempera-
ture. The compass/temperature display unit then dis-
plays the proper ambient temperature.
DIAGNOSIS AND TESTING
AMBIENT TEMPERATURE SENSOR
The thermometer function is supported by the
ambient temperature sensor, a wiring circuit, and the
compass/temperature display unit.
If the display shows OC (-49° F (-45° C) or SC
(140° F (60° C),, there is an OPEN or SHORT CIR-
CUIT and it must be repaired before the VFD can be
tested.
The ambient temperature sensor circuit can also be
diagnosed using the following Sensor Test, and Sen-
sor Circuit Test. If the temperature sensor and cir-
cuit are confirmed to be OK, but the temperature
display is inoperative or incorrect, replace the com-
pass/temperature display.
SENSOR TESTING
(1) Turn the ignition switch to the OFF position.
Disconnect and isolate the battery negative cable
(Fig. 5). Disconnect the ambient temperature sensor
wire harness connector.
(2) Measure the resistance of the ambient temper-
ature sensor. At room temperature (approx. 68°F),
the sensor resistance should be between 9-11 Kilo-
hms (9000-11000 ohms). The sensor resistance should
read between these two values. If OK, refer to Sensor
Circuit Testing below. If not OK, replace the faulty
ambient temperature sensor.
SENSOR CIRCUIT TESTING
(1) Turn the ignition switch to the OFF position.
Disconnect and isolate the battery negative cable.
Disconnect the ambient temperature sensor wire har-
ness connector and the compass/temperature display
unit wire harness connector.
Degaussing Tool 6029
Fig. 5 Battery Negative Cable Remove/Install
PT
OVERHEAD CONSOLE
8M - 7
OVERHEAD CONSOLE (Continued)
(2) Connect a jumper wire between the two termi-
nals in the body half of the ambient temperature sen-
sor wire harness connector.
(3) Check for continuity between the sensor return
circuit and the ambient temperature sensor signal
circuit cavities of the compass/temperature display
unit wire harness connector. There should be conti-
nuity. If OK, go to Step 4. If not OK, repair the open
sensor return circuit or ambient temperature sensor
signal circuit to the ambient temperature sensor as
required.
(4) Remove the jumper wire from the body half of
the ambient temperature sensor wire harness con-
nector. Check for continuity between the sensor
return circuit cavity of the compass/temperature dis-
play unit wire harness connector and a good ground.
There should be no continuity. If OK, go to Step 5. If
not OK, repair the shorted sensor return circuit as
required.
(5) Check for continuity between the ambient tem-
perature sensor signal circuit cavity of the compass/
temperature display unit wire harness connector and
a good ground. There should be no continuity. If OK,
replace the compass/temperature display unit. If not
OK, repair the shorted ambient temperature sensor
signal circuit as required.
REMOVAL
(1) Open hood.
(2) Working through the hole in the top center of
the grille, remove the one retaining nut from the
appropriate ambient temperature sensor (Fig. 6).
(3) Disconnect the ambient air temperature sensor
electrical connector and remove the sensor from the
vehicle.
INSTALLATION
(1) Install the one retaining nut to ambient tem-
perature sensor.
(2) Connect the battery negative cable.
(3) Close hood.
Fig. 6 AMBIENT AIR TEMPERATURE SENSOR
LOCATION
1 - Air Temperature Sensor - NGC Engine Controller
2 - Air Temperature Sensor - Overhead Console
3 - Radiator Closure Panel
8M - 8
OVERHEAD CONSOLE
PT
AMBIENT TEMP SENSOR (Continued)
POWER SYSTEMS
TABLE OF CONTENTS
page
page
POWER LOCKS
TABLE OF CONTENTS
page
page
POWER LOCKS
. . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DIAGNOSIS AND TESTING - POWER LOCKS
ACTIVATION UNLOCK . . . . . . . . . . . . . . . . . . . 3
STANDARD PROCEDURE - ROLLING DOOR
LOCKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
DOOR LOCK SWITCH
DIAGNOSIS AND TESTING - DOOR LOCK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . . . . . . 4
DOOR LOCK MOTOR
. . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DIAGNOSIS AND TESTING - DOOR LOCK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
LIFTGATE LOCK MOTOR
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . . . . . . 4
REMOTE KEYLESS ENTRY MODULE
DIAGNOSIS AND TESTING - REMOTE
. . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . 5
REMOTE KEYLESS ENTRY TRANSMITTER
. . . . . . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
DIAGNOSIS AND TESTING - REMOTE
STANDARD PROCEDURE - HORN CHIRP
TOGGLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
STANDARD PROCEDURE - TRANSMITTER
PROGRAMING . . . . . . . . . . . . . . . . . . . . . . . . 6
TRANSMITTER BATTERIES . . . . . . . . . . . . . . 6
SPECIFICATIONS - TRANSMITTER RANGE
POWER LOCKS
DESCRIPTION
POWER LOCKS
The power lock system allows all of the doors and
the liftgate to be locked or unlocked electrically by
operating a switch on either front door trim panel.
The power lock system receives non-switched battery
current through a fuse in the Fuse Block, so that the
power locks remain operational, regardless of the
ignition switch position.
This vehicle also offers several customer program-
mable features, which allows the selection of several
optional electronic features to suit individual prefer-
ences.
The power lock system for this vehicle can also be
operated remotely using the available Remote Key-
less Entry (RKE) system Radio Frequency (RF)
transmitters, if equipped.
Certain functions and features of the power lock
system rely upon resources shared with other elec-
tronic modules in the vehicle over the Programmable
Communications Interface (PCI) data bus network.
For proper diagnosis of these electronic modules or of
PT
POWER SYSTEMS
8N - 1
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