User Manual

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User guide
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573904 | REV. B | 03.2016
Bosch Automotive Service Solutions Inc.
5.1 I/M Monitors (Emissions)
The I/M Monitors (Inspection / Maintenance) function is
used to view a snapshot of the operations for the emis-
sion system on OBDII vehicles. I/M Monitors is a very
useful function. To guarantee no faults exist make sure
all monitors are ok or n/a and no DTC’s exist. Refer to
the vehicles service manual for the drive cycle operation.
During normal driving conditions, the vehicle computer
scans the emission system. After a specific amount of
drive time (each monitor has specific driving conditions
and time required), the computer monitors decide if the
vehicles emission system is working correctly or not as
well as detecting out of range values. When the monitor
status is:
• ok - vehicle was driven enough to complete the
monitor.
• inc (Incomplete) - vehicle was not driven enough to
complete the monitor.
• n/a (not applicable)- vehicle does not support that
monitor.
Depending on vehicle, disconnecting or a discharged
battery may erase DTCs and clear monitor status. Moni-
tors may be reset by:
• Erasing codes
• Vehicle control modules losing power
The I/M Monitors function can be run key on engine
running (KOER) or key on engine off (KOEO).
Extreme weather and/or road conditions can prevent a
monitor from running. Also, some monitors may require
a cold start to complete.
From the Diagnostic Menu.
1. Select I/M Monitors.
• Use the and keys until I/M Monitors is
highlighted.
• Press .
Diagnostic Menu
I/M Monitors
Read Codes
Erase Codes
MIL Status
State OBD Check
View Data
Record Data
View Freeze Data
Drive Cycle Monitor
Rd\Er
Two types of I/M Monitors test are:
• Since DTCs Cleared - shows status of the monitors
since the DTCs were last erased.
• This Drive Cycle - shows status of monitors since
the start of the current drive cycle. Refer to the
vehicle service manual for more detailed information
on emission-related monitors and their status.
Some vehicles do not support This Drive Cycle. If vehi-
cle supports both types of monitors the I/M Monitors
Menu displays.
2. View summary of monitor status.
• Use the and keys (if required).
Depending on monitor test, one of these two screens
will be present.
Since DTCs Cleared
Fuel System Mon
Comp Component
Catalyst Mon
Htd Catalyst
Evap System Mon
Sec Air System
A/C Refrig Mon
Oxygen Sens Mon
Misfire Monitor
ok
ok
ok
n/a
inc
n/a
n/a
ok
ok
Rd\Er
This Drive Cycle
Fuel System Mon
Comp Component
Catalyst Mon
Htd Catalyst
Evap System Mon
Sec Air System
A/C Refrig Mon
Oxygen Sens Mon
Misfire Monitor
ok
ok
inc
n/a
dis
n/a
n/a
inc
ok
Rd\Er
Abbreviations and names for OBDII monitors supported
by the scan tool are shown below. They are required by
the United States Environmental Protection Agency
(EPA). Not all monitors are supported by all vehicles.
Monitors Expanded Name
Misfire Monitor Misfire monitor
Fuel System Mon Fuel System Monitor
Comp Component Comprehensive components monitor
Catalyst Mon Catalyst monitor
Htd Catalyst Heated catalyst monitor
Evap System Mon Evaporative system monitor
Sec Air System Secondary air system monitor
A/C Refrig Mon Air conditioning refrigerant monitor
Oxygen Sens Mon Oxygen sensor monitor
Oxygen Sens Htr Oxygen sensor heater monitor
EGR/VVT Sys Mon
Exhaust gas recirculation or variable
valve timing monitor
NMHC Cat Mon
Non-methane hydrocarbon catalyst mon-
itor
NOX Treat Mon Nitrogen oxide treatment monitor
Boost Pres Mon Boost pressure monitor
Exhst Gas Sensr Exhaust gas sensor
PM Filter Mon Particulate matter filter monitor
3. Return to Diagnostic Menu.
• Press .