The IPC monitors the steering wheel control keys (switches) input at the IPC connector C2 terminal B11. The IPC interprets the button commands and issues the appropriate class 2 message.

The IPC receives a value that is not within the resistance value range.

1. Inspect the steering wheel touch controls for one of the following conditions:

•

Binding

•

Sticking

•

Broken

2. Inspect CKT 1796 (DK BLU) for a short or open.
3. Ensure that C202 terminal A1 is clean and tight.
4. Each steering wheel control key (switch) has a unique counts value. Measure these counts with the following procedure:

4.1.	Connect a scan tool.

4.2.	Press each switch and view the steering wheel controls data list parameter.

4.3.	Use the table below for the correct value.

5. Each steering wheel control key (switch) has a unique resistance. Measure these resistance values with the following procedure:

5.1.	Disconnect C202.

5.2.	Connect a DMM to the steering column harness terminals A1 and A4.

5.3.	Press each key and measure the resistance.

5.4.	Use the table below for the correct value.