Mack V-MAC IV, Operator'S Handbook Manual, Page: 27 / 133

V-MAC Co-Pilot Operator's Manual 19
Electronic Malfunction Indicator
The electronic malfunction indicator, amber in color, illuminates to alert the driver of
an electrical problem with the vehicle management and control (V-MAC) IV system.
The vehicle management and control (V-MAC) IV system does a self-test when the
ignition key is turned to the ON position. The electronic malfunction indicator stays
on while this test is being performed (approximately six seconds). After the self-test
is completed, the indicator will turn off and remain off unless a problem is detected
by vehicle management and control (V-MAC) IV. If the indicator turns on while the
vehicle is being driven, vehicle management and control (V-MAC) IV has detected a
problem. In most circumstances, the vehicle will operate even though the indicator
is on; however, engine performance may be affected.
W3036326
Figure 9 — Electronic Malfunction Indicator
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