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 (tach) has a self-diagnostic function shown, and also has a customizable reset function.

• The beeper drive circuit check.
• The indicator drive circuit check.
• The switch input test.
• The LCD segments check.
• The gauges drive circuit check (Tachometer, Fuel gauge, Coolant temperature gauge).
• The communication line check (B-CAN, F-CAN, and UART lines).