Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

The body control module (BCM) monitors the ignition key alarm switch. When the key is in the ignition, the ignition key alarm switch is closed and the signal circuit is low. When the key is not in the ignition, the ignition key alarm switch is open and the signal circuit is high.

The ignition is ON.

The BCM stores DTC B2961 in memory.

Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail.

Schematic Reference

Connector End View Reference

Electrical Information Reference

Scan Tool Reference

Scan Tool Data List

1. Ignition OFF, disconnect the harness connector at the ignition switch.
2. Ignition ON, verify that a test lamp illuminates between the ignition 1 voltage supply circuit and ground.

⇒	If the test lamp does not illuminate, repair the voltage supply circuit for a short to ground or an open/high resistance. If the ignition switch fuse is open, also test the signal circuit for a short to ground.

3. Install a 3-amp fused jumper wire between the signal circuit and the voltage supply circuit. Verify the scan tool Key In Ignition parameter displays Yes.

⇒	If not Yes, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the BCM.

4. If all circuits test normal, test or replace the ignition switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.