2004 Malibu Maxx no crank /no start. How can I bypass the security and/or passlock system. No, the car isnot stolen. :-)
Pass lock diables fuel system not starter . Is the security light on ? car and padlock symbol ? Your best bet , take it to a qualified repair shop before you totally ruin it . Because there are no wires you can cut , jump , put in a resistor etc... There is no way to by pass this system .The vehicle theft deterrent (VTD) system functions are provided by the theft deterrent module (TDM).
When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, the transponder embedded in the head of the key is energized by the exciter coils surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains a unique value, which is received by the TDM. The theft deterrent control module then compares this value to a value stored in memory, learned key code. If the value is correct, the TDM sends a random generated number to the transponder. This is called a challenge. Both the transponder and the TDM perform a calculation on the challenge. If the calculations match, the TDM sends the fuel continue password via the serial data circuit to the powertrain control module (PCM). If either the transponders unique value or the calculation to the challenge is incorrect, the TDM will send the fuel disable password to the PCM via the serial data circuit.
on Feb 11, 2017