Operating Instructions; Vehicle Setup; Flowmeter Test - Bosch J 41413-200 Operación Manual

Operating Instructions

1. Turn the vehicle engine OFF, and open the hood. Position a large fan to blow air under the
vehicle onto the fuel tank area. Note: A large difference between the vehicle temperature
and shop temperature will seriously affect the accuracy of the tests. Always allow enough
time – at least 15 minutes – for the vehicle's temperature to adjust to the shop temperature. See
Temperature Variation Instructions
temperatures.
Tester Hookup
2. Connect the red battery clip from the tester
to the positive (+) battery terminal. See
Figure 1.
3. Connect the black battery clip from the
tester to chassis ground. Note: The vehicle
battery must be fully charged for
optimum tester performance.
1. Turn the NITROGEN/SMOKE valve on the front
control panel to NITROGEN. See Figure 2.
2. Connect the hose to a test orifice on the
bottom-front of the tester. See Figure 3. To
determine the correct orifice size, refer to
the GM service manual for the vehicle
being tested. Vehicle-specific information
can be found in the service procedures for
Diagnostic Trouble Codes (DTCs) that
relate to evaporative emission (EVAP)
system leaks.
For 2002 and prior vehicles, refer to GM
Service Bulletin No. 01-06-04-044.
3. Press and release the remote switch to
activate the tester.
6

Vehicle Setup

on page 10 for more information about vehicle vs. shop
Black
Battery
Clip
Flowmeter Test (leak detection)
Red
Battery Clip
Figure 1
NITROGEN/SMOKE Valve
Figure 2
NOTE: Decide which test orifice to use by referring to GM Service information
Test Orifice for
.020" (.5mm)
Self-Test TBD TBD
Vehicles
Figure 3
Test Orifice for Use Orifices In
.040" (1mm) Nitrogen Mode
Vehicles Only