User Manual

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User guide
| HDS 200/HDS 250
HD Scan Tool for Class 4-8 Diesel, Light and Medium Vehicles
581618 | REV. B | 11.2018
Bosch Automotive Service Solutions Inc.
– This Drive Cycle shows status of monitors
since start of 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 vehicle supports both types of
drive cycle monitors the Drive Cycle Moni-
tor menu will display.
Drive Cycle Monitor
Since DTCs Cleared
This Drive Cycle
2. View summary of monitor status.
• Use the UP and DOWN keys (if required).
3. Depending on the drive cycle monitors, either the
This Drive Cycle or the Since DTCs Cleared screen
will display.
This Drive Cycle
Catalyst Mon
Oxygen Sens Mon
Oxygen Sens Htr
EGR/VVT Sys Mon
inc
inc
inc
inc
OR
Since DTCs Cleared
Misfire Monitor
Fuel System Mon
Comp Component
Catalyst Mon
Htd Catalyst
Evap System Mon
Sec Air System
A/C Refrig Mon
Oxygen Sens Mon
ok
ok
ok
ok
n/a
inc
n/a
n/a
ok
• The scan tool display is continuously updated.
Monitors that are “ok” will disappear and only
the “inc” monitors will remain displayed. Moni-
tors designated “n/a” are not displayed.
• When all Monitors are “OK”, a screen stating “All
supported monitors are OK” will display.
This Drive Cycle
Press ENTER to continue
All supported monitors are OK
OR
Since DTCs Cleared
Press ENTER to continue
All supported monitors are OK
4. Return to Special Tests Menu.
• Press .
6.10 O2 Monitor Tests
OBD II regulations require applicable vehicles monitor
and test oxygen (O2) sensors to determine problems
related to fuel and emissions. The O2 Monitor Tests
allows retrieval of completed O2 sensors monitor test
results.
• The O2 Monitor Tests is not an on-demand test. O2
sensors are not tested when selected via the menu.
O2 sensors are tested when engine operating condi-
tions are within specified limits.
• If the vehicle communicates using a controller area
network (CAN), O2 Monitor Tests are not supported
by vehicle. A message is displayed. Refer to “6.11
Diagnostic Monitor Tests” on page 37 for O2
monitor data.
• O2 sensors are located before (upstream) and after
(downstream) catalyst(s). Sensors are named (xy)
for their position to both cylinder banks and cata-
lysts.
– The O2 sensor for cylinder bank 1 has prefix 1y
while O2 sensor for cylinder bank 2 has prefix
2y.
– The O2 sensor upstream of catalyst (closest to
engine) has suffix x1 while O2 sensor down-
stream of catalyst has suffix x2. If vehicle con-
tains more catalysts, O2 sensor downstream of
second catalyst has suffix x3 and O2 sensor
downstream of next catalyst has suffix x4.
– For example, O2S21 is upstream O2 sensor for
cylinder bank 2.
The following O2 Sensor Tests are available:
• Rich-to-lean sensor threshold voltage
• Lean-to-rich sensor threshold voltage