B2961

DTC B2961

DTC DESCRIPTOR
DTC B2961: Key In Ignition Circuit




DIAGNOSTIC FAULT INFORMATION

IMPORTANT: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Testing and Inspection

CIRCUIT/SYSTEM DESCRIPTION
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.

CONDITIONS FOR RUNNING THE DTC
The ignition is ON.

CONDITIONS FOR SETTING THE DTC
- The ignition 1 voltage circuit is active and the key in ignition switch signal circuit is inactive and the signal circuit is high.
- The above condition is present for greater than 5 seconds.

ACTION TAKEN WHEN THE DTC SETS
The BCM stores DTC B2961 in memory.

CONDITIONS FOR CLEARING THE DTC
- The DTC becomes history when the conditions for setting the DTC are no longer present.
- The history DTC clears after 100 malfunction-free warm-up cycles.
- The BCM receives a clear code command from the scan tool.

DIAGNOSTIC AIDS
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.

CIRCUIT/SYSTEM TESTING
1. Ignition ON, verify the Key In Ignition parameter displays Yes.
- If Yes, verify that the scan tool Battery Voltage parameter displays Normal. If Normal, repair the short to voltage in the ignition 1 voltage circuit.
- If not Normal, replace the BCM.
2. Ignition ON, verify the Key In Ignition parameter displays No.
- If No, test the signal circuit of the key in ignition switch for an open/high resistance. If the circuit tests normal, test the voltage circuit of the key in ignition switch for an open/high resistance.
- If all circuits test normal, replace the ignition switch.

REPAIR INSTRUCTIONS

IMPORTANT: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

- Ignition Switch Replacement
- Control Module References for BCM replacement, setup, and programming.