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.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B2961 Key in Ignition Circuit
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: Data Communication Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | 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 . 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 . 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 . 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 . 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 . Did you correct the condition? | Go to Step 11 | -- |
9 | Replace the ignition switch. Refer to Ignition and Start Switch Replacement . Did you complete the replacement? | Go to Step 11 | -- |
10 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 11 | -- |
11 |
Does the DTC reset? | Go to Step 2 | System OK |
