Data List

Module Information And Data:

Ignition 1 - Range: ACTIVE/INACTIVE: The EVO/Passlock Module uses this data in order to determine the position of the ignition switch. When the ignition switch is in the RUN or CRANK position, ACTIVE is displayed. When the ignition switch is not in the RUN or CRANK position, INACTIVE is displayed.

Battery Voltage - Range: 9.0-16.0 Volts: The voltage value displayed refers to the battery system voltage measured by the EVO/Passlock Module on CKT 1740.

Passlock Power - Range: ACTIVE/INACTIVE: The EVO/Passlock Module supplies 12 volts and a ground to the Passlock Sensor. The Passlock power is active whenever the battery voltage and ignition 1 are present.

Passlock Data Voltage - Range: 0-5 Volts: The Passlock data voltage displayed indicates the return voltage from the Passlock sensor to the EVO/Passlock Module. The EVO/Passlock Module also determines if the voltage received is a valid voltage window or an invalid voltage window. The EVO/Passlock Module has 10 valid voltage windows, an OPEN voltage window, a TAMPER voltage window, and a SHORTENED voltage window. The value displayed on the scan tool will be within 0.0-5.0 volts. The EVO/Passlock Module converts this analog voltage to a class 2 serial data password. The password is then sent to the VCM/PCM. The VCM/PCM must receive the same password that was learned in the last learn procedure. If the VCM/PCM does not receive a valid password from the EVO/Passlock Module, the VCM/PCM will not enable the fuel injection system. Refer to PASSLOCK Reprogramming Seed and Key (10 minutes) or PASSLOCK Reprogramming Auto Learn (30 minutes). [1][2]PASSLOCK Reprogramming Auto Learn

Passlock State - Displays: IGNITION OFF/NORMAL DECISION/LEARNED PASSLOCK/TAMPER/MONITOR PASSLOCK/FAIL ENABLED/FAIL ENABLED DEC/SEEDKEY LRN PEND/SEEDKEY LEARN/AUTO LRN PEND/AUTO LEARN: The display refers to the state of the Passlock system.

Passlock Code - Range: OPEN/SHORT/TAMPER/NUMERIC: The Passlock code displayed indicates the internal Passlock sensor resistance value. The EVO/Passlock Module determines if the Passlock code received is valid or invalid. The EVO/Passlock Module has 10 valid Passlock codes, an OPEN Passlock code, a TAMPER Passlock code, and a SHORT Passlock code. The scan tool will display any valid Passlock code as a numeric value. The value displayed on the scan tool should be within 1-10 (i.e. valid code 7), SHORT, TAMPER or OPEN.

Tamper Timer - Range: 0-600 Seconds: Use the tamper timer as part of the interactive procedure in order to allow the EVO/Passlock Module to display the time remaining when in the tamper mode. The tamper timer starts when the ignition switch

is turned to the RUN position and the EVO/Passlock Module receives a Passlock data voltage that is different from the last learned Passlock data voltage. The tamper timer has a lockout timer of 10 minutes. The vehicle must remain in the tamper mode even if the ignition switch is turned from the RUN position to the OFF position during the 10 minute period, however the timer will reset to 0 and will start a new count.

Auto Learn Timer - Range: 0-600 Seconds: Use the auto learn timer as part of the interactive procedure in order to allow the EVO/Passlock Module to learn valid Passlock data from the Passlock sensor. The learn procedure consists of 3 consecutive lockout cycles of approximately 10 minutes each totaling 30 minutes. The auto learn timer does not display the time in which the VCM/PCM is in the lockout mode.

Security Lamp Feedback- Range: 0-16 Volts: The security lamp feedback voltage normally is close to 12 volts when the security lamp is OFF and close to 0 volt when the security lamp is ON. This reading shows the voltage on the security lamp driver.

Security Lamp State - Displays:

ON/OFF/FLASHING: The security lamp will turn ON steady for 5 seconds and then turn OFF when the ignition switch is turned from the OFF position to the RUN position. The security telltale should have 3 states: OFF, ON STEADY and FLASHING. The security telltale will stay ON STEADY (after the bulb check) if any DTC is stored in the EVO/Passlock Module; if the EVO/Passlock Module loses battery, ignition, or both while ignition is still supplied to the security lamp; or the security lamp driver is shorted to ground. The security telltale will flash for approximately 10 minutes to indicate that the EVO/Passlock Module is in lockout Tamper mode during which the fuel delivery will be defaulted to Disable. The Passlock system requires 3 consecutive lockout cycles to complete the 30 minute Auto Learn procedure for a changed component, refer to PASSLOCK Reprogramming Auto Learn to perform this task. Another option is the 10 minute Seed and key procedure, refer to PASSLOCK Reprogramming Seed and Key to perform this task.