Multiplex Communication System

DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table.

HINT:
- DTC 71 are not output through open door warning light on meter because of system itself.
- When some of the DTC 14, 15 is output, the DTC of other ECU communication stop is also output. In this case, please repair DTC 14, 15 first. The following shows DTCs which are output when +B or GND short occurs on communication bus.
- DTC 21-24, 51 and 52 don't mean switch abnormal but notify how switch works.
If DTC is not output when operating switch, it means failure of switch contact.
If DTC is output when not opening switch, it means stick of switch.