B3031

Diagnostic Chart (Part 1 Of 2):

Diagnostic Chart (Part 2 Of 2):

Schematic:

CIRCUIT DESCRIPTION
In this mode, the EVO/Passlock (TM) module will learn the current Passlock (TM) sensor code value. The following list is the 2 Passlock (TM) learn procedures:
- A 10 minute procedure that requires a Techline terminal.
- A 30 minute learn procedure that requires a scan tool in order to clear the codes.

CONDITIONS FOR SETTING THE DTC
- A new (never installed in a vehicle) EVO/Passlock (TM) module has been installed and the ignition is turned to ON but is not rotated to crank. Once the ignition switch has been rotated to crank, the EVO/Passlock (TM) module will learn the Passlock (TM) code.
- The EVO/Passlock (TM) module is in the learn mode but does not see a valid Passlock (TM) sensor code because of a sensor or a wiring problem.

ACTIONS TAKEN WHEN THE DTC SETS
The vehicle will not run and the security telltale will be ON.

CONDITIONS FOR CLEARING THE DTC
- The DTC will clear after an ignition cycle has occurred after the EVO/Passlock (TM) module has learned a valid code.
- EVO/Passlock (TM) module history codes will be cleared after 100 ignition cycles with no current codes active.
- Using a scan tool.

DIAGNOSTIC AIDS
- Prior to replacing a EVO/Passlock (TM) module ensure all the diagnostics have been completed. If the EVO/Passlock (TM) module has been replaced with an existing system condition, the replacement EVO/Passlock (TM) module will not learn a new voltage code (DTC B3031) until the original condition has been repaired.
- Perform a visual inspection of the wiring and the connectors.
- Inspect the Passlock (TM) sensor harness for an intermittent or poor connections (including the in-line connector). Refer to Testing for Intermittent and Poor Connections in Diagrams.

TEST DESCRIPTION
The numbers below refer to the numbers on the diagnostic table:
2. The EVO/Passlock (TM) module learns an analog voltage code when the ignition switch is turned to the crank position. If a Passlock (TM) module is replaced and the ignition is turned to the ON position, DTC B3031 will set until the module sees a crank switch position or until the Passlock (TM) sensor has latched.
3. Turning the ignition switch to crank will reset DTC B3031 in a new module.
4. If a conditions in 1 of the following circuits, troubleshoot the appropriate DTC prior to diagnosing DTC B3031:
- CKT 812
- CKT 1836
- CKT 1057