Troubleshooting - B-CAN System Diagnosis Test Mode B

Multiplex Integrated Control System Troubleshooting - B-CAN System Diagnosis Test Mode B

Do this diagnosis if any of the control units are not communicating (Not Available on displayed in the HDS) as found by B-CAN System Diagnosis Test Mode A.

1. Using the HDS, select the system that has the symptom from the BODY ELECTRICAL SYSTEM SELECT menu.

2. Select the DTCs, and then check for loss of communication DTCs.

Are any loss of communication DTCs indicated?

YES -

Go to step 3.

NO -

Faulty driver's MICU; replace the driver's under-dash fuse/relay box USA models, Canada models.

3. Do the power, ground, and communication part of the input test for the unit(s) not communicating with the HDS.