CAL Transponder and Immobilizer Systems 2

Question 1

What does the term 'cloning' mean in the context of automotive transponder keys?

Accepted Answer

Duplicating the transponder's stored data onto a blank chip

Answer

Physically cutting a key to match an existing key

Answer

Resetting the immobilizer ECU to factory defaults

Answer

Programming a new key through OBD-II diagnostics

Question 2

Which transponder type is commonly referred to as a 'glass chip' due to its packaging?

Accepted Answer

Texas Instruments TI DST

Answer

Texas Crypto 128-bit

Answer

Philips Crypto 2

Answer

Fixed-code EM4100

Question 3

What is the primary purpose of the antenna ring surrounding the ignition cylinder?

Accepted Answer

To energize and communicate with the transponder chip

Answer

To power the ECU during startup

Answer

To amplify the RF signal to the BCM

Answer

To detect key insertion mechanically

Question 4

A customer's vehicle starts with the original key but not the newly programmed key. The most likely cause is:

Accepted Answer

The transponder data was not successfully written to the new key

Answer

The new key blade is cut incorrectly

Answer

The immobilizer fuse has blown

Answer

The ignition cylinder needs replacement

Question 5

Which of the following best describes a 'rolling code' transponder system?

Accepted Answer

A system where the crypto value changes with each use

Answer

A system that uses a fixed ID that never changes

Answer

A system that stores all valid codes in the ECU permanently

Answer

A system requiring manual relearn after each start

Question 6

When using an EEPROM programmer to read immobilizer data, which component is most often targeted?

Accepted Answer

The immobilizer control module or ECU EEPROM chip

Answer

The key fob battery

Answer

The ignition coil module

Answer

The body control module relay

Question 7

A Philips PCF7936 (ID46) transponder operates in which frequency range?

Accepted Answer

125 kHz

Answer

315 MHz

Answer

433 MHz

Answer

2.4 GHz