Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Data List / Active Test
- READ DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Immobilizer / Data List.
- According to the display on the Techstream, read the "Data List".
Immobilizer
DATA LIST (IMMOBILIZER)Tester Display Measurement Item/Range Normal Condition Diagnostic Note Key SW Unlock warning switch signal / ON or OFF ON: Key is in ignition key cylinder
OFF: No key is in ignition key cylinder- IG SW Ignition switch signal / ON or OFF ON: Ignition switch ON
OFF: Ignition switch ACC or OFF- Immobilizer Immobilizer system status / Set or Un-set Set: No key is in ignition key cylinder
Un-set: Key is in ignition key cylinder- Permit (Start) Permit (start) signal / OK or NG OK: Engine start is permitted
NG: Engine start is not permitted- Response Transponder chip data / OK or NG OK: Data OK
NG: Data error- Frame Error Transponder chip data / OK or NG OK: Data OK
NG: Data error- Different Serial Number Transponder chip data / OK or NG OK: Data OK
NG: Data error- Different Encrypt Code Transponder chip data / OK or NG OK: Data OK
NG: Data error- Abnormal Status Transponder chip data / OK or NG OK: Data OK
NG: Data error- BCC Malfunction Transponder chip signal / OK or NG OK: Correct data sent
NG: Incorrect data sent- Sub Key Sub-key code signal / Reg or Unreg Reg: Registered sub-key code is sent
Unreg: Unmatched sub-key code is sent- Master Key Master key code signal / Reg or Unreg Reg: Registered master key code is sent
Unreg: Unmatched master key code is sent- Transponder S-code Number of registered sub-keys / min.: 0, max.: 15 Number of registered sub-keys - Transponder M-code Number of registered master keys / min.: 0, max.: 15 Number of registered master keys - Reg Code Space Full Key registration code memory space full / YES or NO NO: Possible to register more key codes
YES: Cannot register any more key codes- +B +B judgment / Normal or Break Normal: Battery supply is normal
Break: Battery supply is malfunctioning- Antenna Coil Status Antenna coil condition / Normal or Fail Normal: Antenna coil is normal
Fail: Antenna coil is malfunctioning-
- PERFORM ACTIVE TEST
HINT:
Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Immobilizer / Active Test.
- Perform the Active Test according to the display on the Techstream.
Immobilizer
ACTIVE TEST DETAIL (IMMOBILIZER)Tester Display Test Part Control Range Diagnostic Note Security Indicator Security indicator light ON or OFF -
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.