Troubleshooting - B-CAN System Diagnosis Test Mode C

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

Do this diagnosis if a component that is controlled by the B-CAN system does not stop or turn off

NOTE:

If the component does not turn on, go to B-CAN System Diagnosis Test Mode D (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE D )
See the B-CAN system unit input/output index for a list of input and output devices and the control units that monitor the input and control the output devices (see HDS INPUTS, OUTPUTS, AND COMMANDS )

Check for DTCs by selecting the TEST MODE menu from the HDS

Are any DTCs indicated?

YES -Go to B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A )

NO -Go to step 2

Turn off the switch that controls the malfunctioning component
Select DATA LIST from the TEST MODE menu, and check the input of the switch that controls the component

Does the HDS indicate the switch is OFF?

YES -Go to step 4

NO -Go to step 6

In the DATA LIST, check the output signal of the malfunctioning component

Is the output signal OFF?

YES -Go to step 5

NO -Replace the control unit that controls the device that will not turn OFF

Check the relay that does not stop or turn off, if applicable, then check for a short in the wire between the relay and the component, the relay and control unit, or the component and control unit

Are the relay and the wire harness OK?

YES -Replace the control unit that controls the component that will not stop or turn OFF

NO -Replace the relay or repair/replace the wire harness

Check the switch, then check for a short in the wire between the switch and the control unit that monitors the switch

Are the switch and wire harness OK?

YES -Replace the control unit that monitors the switch

NO -Replace the switch or repair/replace the wire harness