Self-Diagnostic Function: Notes
WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Before testing the gauge system, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A
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 A) communication line between the gauge control module).
NOTE:
Indicators are also controlled via the communication line.