Self-diagnostic Function: Notes

Before troubleshooting the gauge system, refer to multiplex integrated control system B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

The gauge control module has a self-diagnostic function.

• The beeper drive circuit check
• The indicator drive circuit check
• The switch input test
• The LCD segments check
• The gauges drive circuit check (Speedometer, Tachometer, Fuel gauge. Coolant temperature gauge)
• The communication line check (of the body controller area network (B-CAN) communication line and the fast controller area network (F-CAN) communication line between the gauges).