Disclaimer
This step by step procedure is intended to augment the Passlock™
Diagnostic Repair Procedures. Sole reliance on this procedure may lead to
unintended results.
Equipment
• | CD-ROM database containing the passlock seed and key algorithm
loaded on a computer with class 2 capability |
Conditions
Important: If a new vehicle/powertrain control module (VCM/PCM) is being installed
for the first time the manufacturing enable bit will be set and the auto learn
procedure may not be necessary.
The following procedure allows the relearning of the EVO/Passlock™
module or the VCM/PCM learned data code after the replacement of any of the
following parts:
• | The EVO/Passlock™ module |
The EVO/Passlock™ module will set the DTC B3031 module
in the learn mode when entering the reprogramming procedure.
Steps
Important: Erase the passlock™ related diagnostic trouble codes (DTCs) that
are stored in the VCM/PCM. If there are any powertrain related DTCs, record
those DTCs then:
Important: In addition to the time involved in performing the specific steps, the
Seed and Key procedure accomplishes the same task in 10 minutes as
the Auto Lean procedure does in 30 minutes. Use either one of
these two procedures.
The following is the Seed and Key Learn Procedure:
- Insure the ignition key is in the ON position.
- Clear all EVO/passlock™ module and VCM/PCM DTCs, record
those DTCs then:
- With scan tool (TECH 2) connected to the vehicle, select "Programming/Request
Info" from menu, then follow instructions.
- Disconnect scan tool from vehicle and perform "Service Programming
System/VTD Learn" with Techline terminal, then follow instructions.
- Reconnect scan tool to the vehicle.
- Follow instructions on the scan tool to perform the VTD password
learn on the vehicle, this takes about 10 minutes.
- After 10 minutes, the SECURITY indicator will turn OFF. The new
security code is ready to be communicated among the Passlock sensor, EVO/Passlock
module and VCM/PCM. The new Password is learned on the next ignition lock
cylinder cycle from OFF-to-CRANK-to-ON (start attempt).