Self-diagnostic Function: Notes
NOTE:
Before testing, troubleshoot the multiplex integrated control unit first, using 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 which consists of the following checks
- 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. Speedometer, Engine 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)
NOTE:
Indicators are also controlled via the communication line