For 1990-2009 cars
Theft Deterrent System Components
Cell 133: Fuel Tank Module, Instrument Cluster and Passlock Cylinder
Handling ESD Sensitive Parts Notice

### Circuit Description

This DTC is set when the body control module senses incorrect Passlock™ data.

### Conditions for Setting the DTC

All of the following conditions must be met:

• | The Passlock™ option is enabled.

• | Ignition 0 is active.

• | Three consecutive bad key reads (approximately one second).

### Action Taken When the DTC Sets

• | The body control module (BCM) enters the tamper mode.

• | The BCM stores DTC B3033 in the BCM memory.

• | The vehicle will not start.

### Conditions for Clearing the DTC

• | The BCM goes to sleep and reinitializes with the fault cleared.

• | All of the BCM history codes will be cleared after 100 ignition cycles (from OFF to RUN) with no current codes active during the 100 ignition cycles.

• | A Scan Tool is used.

### Diagnostic Aids

• | Inspect for a bad or broken Passlock™ sensor in the ignition switch.

• | When the diagnostics direct you to take the electrical measurements at the wiring harness junction blocks, refer to Power Distribution Schematics for terminal assignments of the wiring harness junction blocks.

• | If the DTC is a history DTC the problem may be intermittent. Perform the tests shown while wiggling the wiring and connectors. This action often causes the malfunction to appear.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open.
1 | Was the Theft Deterrent Diagnostic System Check performed? | -- | Go to Step 2 | Go to Diagnostic System Check - Theft Deterrent
2 | Place the body control module (BCM) in auto learn. Is the BCM placed in auto learn? | -- | Go to Step 3 | --
3 | Read the DTCs using the Scan Tool . Have any of the DTCs reset? | -- | Go to Step 4 | Go to Step 6
4 | Diagnose and repair the DTC as necessary. Refer to Diagnostic Trouble Code (DTC) List/Type . Is the repair complete? | -- | Go to Step 6 | Go to Step 5
5 | Replace the body control module (BCM). Refer to the following procedures:

• | Body Control Module (BCM) Programming/RPO Configuration in Body Control Systems

• | Body Control Module Replacement in Body Control Systems

Is the repair complete?

--

Go to Step 6

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6 | Clear the DTCs from the memory. Are the DTCs cleared from the memory? | -- | Go to Diagnostic System Check - Theft Deterrent | --