The Universal Garage Door Opener/Tire Pressure
Monitor Module (1) is located in the headliner near the
inside rear view mirror (2). The Tire Pressure Monitor-
ing (TPM) System utilizes a control module to monitor
and operate the system. The control module also has
a Universal Garage Door Opener integrated along with
it.

The Tire Pressure Monitoring System utilizes transmit-
ters that are located in the valve stem (1) of each tire
(2) to communicate the tire pressure condition to the
module. If a tire has low air pressure, an indicator light
on the Instrument Cluster is illuminated. The vehicle
operator must check the tire pressure of each tire in
order to determine which tire has a low pressure
condition.

MESSAGE SYSTEMS

8M - 1

OPERATION

The Universal Garage Door Opener/Tire Pressure Monitoring (TPM) module has a microprocessor controller that
can monitor the transmissions from the sensor/transmitters anytime the Ignition is ON. It can store the last 32 trans-
missions. There are two important values included in these transmissions:

•

Why The Transmission Was Sent

•

Low Tire Pressure

The module compares the transmitted tire pressure to the pressure threshold. If the module determines that the tire
pressure transmitted is below the low pressure thresholds, it will signal for the “Low Tire” pressure warning lamp to
come on.

The TPM module performs diagnostic routines, stores Diagnostic Trouble Codes and provides the appropriate lamp
status to the Body Control Module (BCM). When the module determines there is a fault, the low tire pressure indi-
cator lamp circuit is grounded and the BCM turns on the “Low Tire Pressure” indicator lamp.

The UGDO/TPM module also stores its own identification number, module version and the date of manufacture.

DIAGNOSIS AND TESTING - UNIVERSAL TRANSMITTER

If the Universal Transmitter is inoperative, see the Owner’s Manual in the vehicle glove box for instructions on train-
ing the Universal Transmitter. Retrain the transmitter using a known good remote as instructed in the Owner’s Man-
ual and test the transmitter operation again. If the transmitter is still inoperative, test the Universal Transmitter with
a Radio Frequency Detector special tool.

1. Turn the Radio Frequency (RF) Detector “ON”. A “chirp” will sound and the green power LED will light. If the

green LED does not light, replace the battery.

2. Hold the RF detector within one inch of the TRAINED Universal Transmitter and press any one of the transmitter

buttons.

3. The red signal detection LEDs will light and the tool will beep if a radio signal is detected. Repeat this test three

times.

4. If a RF signal is not detected, replace the Universal Transmitter and reprogram as instructed in the Owner’s

Manual.

STANDARD PROCEDURE - UNIVERSAL TRANSMITTER PROGRAMMING

ERASING CODES

To erase previously programmed Garage Door Opener codes, simply hold down the two outside buttons until the
red LED begins to flash.

PROGRAMMING CODES

1. Turn the ignition ON.

2. Erase the factory test codes by pressing the two outside buttons on the Universal Garage Door Opener. Release

the buttons when the red light begins to flash.

3. Choose one of the three buttons on the vehicles Universal Garage Door Opener to program.

4. Place the manufacturer’s hand-held transmitter within one inch of the vehicles Universal Garage Door Opener.

5. Simultaneously push the buttons on both the transmitters (the manufacturers transmitter will transmit a signal,

and the Universal Garage Door Opener will receive the signal).

6. The red light on the Universal Garage Door Opener will begin to flash slowly (slowly flashing light indicates data

is being transmitted).

7. When the red light on the Universal Garage Door Opener begins to flash rapidly (this may take as long as 60

seconds), release both buttons (rapidly flashing light indicates the data transmission is complete).

8. The Universal Garage Door Opener is now programmed. Advise the vehicle owner to be sure to keep the man-

ufacturer’s hand-held transmitter in case it is needed to reprogram the Universal Garage Door Opener.

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MESSAGE SYSTEMS

REMOVAL

1. Disconnect the negative battery cable.

2. Using a plastic wedge, slide the wedge under the

Universal Garage Door Opener/Tire Pressure Mon-
itor module and the headliner and pry the Universal
Garage Door Opener/Tire Pressure Monitor module
away from the headliner.

3. Disconnect the Universal Garage Door Opener/Tire

Pressure Monitor module harness connector.

INSTALLATION

1. Connect the harness connector to the Universal

Garage Door Opener/Tire Pressure Monitor mod-
ule.

2. Install the Universal Garage Door Opener/Tire

Pressure Monitor module by snapping it into the
headliner.

3. Connect the negative battery cable.

MESSAGE SYSTEMS

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