I-Start System Failure Detection - Volvo 9700 US/CAN 2016 Driver's Handbook Manual

I-Start system failure detection

Due to the reason the I-Start system is
multiplexed to the bus electrical architecture
bus (BEA2), the system operation is
continuous monitored by the auto-diagnostic
system which informs the driver (through
by the driver´s information display located
in the instrument cluster) of the following
conditions (which are the most common):
•
MCM (Master Control Module) will check
and warn if the batteries reach a voltage
level higher than 28 V when the engine is
OFF. With the engine is ON, the voltage
threshold was set in 23.5 V (low) and 31
V (high).
•
Two messages were also created to inform
if there is a problem in the K300 (PID
158 FMI 1) or K400 (PID158 FMI 12)
relays. The messages below will appear
on the LCD (Liquid Crystal Display)
screen of the driver´s information display
in the instruments cluster whenever MCM
(Master Control Module) sends the fault
codes to BIC (Bus Instrument Cluster).
Note: For more information related to I-Start
fault codes and symbols displayed in the
driver´s information display related to this
system; see separate operating instructions:
"I-Start".
Starting and driving 133
For more information about K300 and
K400 relays, see the following section
in this manual: "I-Start system power
relays", page 136
•
MCM sends the information to BBM
(Body Builder Module) through the CAN
Bus, and BBM (Body Builder Module)
sends the fault codes to the driver´s
information display in the instrument
cluster.
For more information related to the
MCM (Master Control Module), see the
following section in this manual: "MCM
(Master Control Module) service switch",
page 44.