Gauge Control Module Self-diagnostic Function
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.
Entering the self-diagnostic function with the HDS
Using the HDS, select Body Electrical, Gauges, then Function Test and do the self-diagnostic function.