Specifications

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Testing Testing Immobilizer (EWS) Systems
This type of Master key has the following features:
• A 3V lithium battery is used as the power supply for the key transmitters.
• An EEPROM is used to store the key data. The data is not lost when the battery is replaced
and initialization is not required.
• The key incorporates an LED that signals the operator of signal transmitting, key initialization
status, and key self-test indication.
1— LED
2— Button #1
3— Button #2
4— Button #3
Figure 4-11 Master key type #2
The buttons in Figure 4-11 have the functions described in Table 4-24.
Pressing buttons #1 and #3 at the same time will start a self-test of the transmitter. The transmitter
is OK when the LED comes on steady for one second. If the LED fails to come on, try replacing
the batteries before suspecting the transmitter.
The state of charge of the transmitter batteries is monitored by the control module. Once the
transmitter voltage level drops below 4.5V, the LED no longer signals transmitter operation.
Convenience opening, initialization and self-testing are no longer possible. The control module
stores the low battery level and posts a message in the check control display when the door is
opened.
Table 4-24 Key type #2 button functions
Button Functions
LED
One flash indicates that the message was sent and the batteries are OK.
A quick flashing LED indicates that the convenience opening signal is being sent.
A slow flashing LED indicates that initialization procedure was successful.
A steady on LED indicates that the hardware/software of the transmitter are OK.
No LED activity could indicate discharged batteries or a defective transmitter.
Button #1
When pressed once: locks doors, arms DWA, and turns interior lights
When pressed twice: deactivates tilt monitoring
Button #2
When pressed once: unlocks driver-side door, disarms DWA, turns interior lights on
When pressed twice: unlocks all doors
When pressed once or twice: convenience opening when pressed and held
Button #3
Trunk lid opened when pressed.
Panic mode when pressed and held (alarm activation).
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