Circuit 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 input is active and the key in ignition switch signal circuit is inactive and the signal circuit is high. |
| • | The above conditions must be present for more 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 fault is no longer present. |
| • | A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present. |
| • | The BCM receives the clear code command from the scan tool. |
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Audible Warnings Schematics Connector End View Reference: Instrument Panel, Gages, and Console Connector End Views or Body Control System Connector End Views in Body Control System | |||
1 | Did you perform the Audible Warnings Diagnostic System Check? | Go to Step 2 | |
2 |
Does the Key in Ignition parameter display Yes? | Go to Step 3 | Go to Step 4 |
3 |
Does the Ignition 1 parameter display On with the ignition off? | Go to Step 8 | Go to Step 7 |
4 | Test the key in ignition signal circuit for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 5 |
5 | Test the ground circuit of the ignition key alarm switch for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 6 |
6 | Inspect for poor connections at the harness connector of the ignition switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 9 |
7 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 10 |
8 | Repair the short to voltage in the ignition 1 voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you correct the condition? | Go to Step 11 | -- |
9 | Replace the ignition switch. Refer to Ignition and Start Switch Replacement in Steering Wheel and Column. Did you complete the replacement? | Go to Step 11 | -- |
10 |
Important: Perform the set up procedure for the replacement BCM. Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 11 | -- |
11 |
Does the DTC reset? | Go to Step 2 | System OK |
