Entry Menus; Functions That Can Be Called Up During The Warm-Up Phase; User Menu - Bosch ETT 6.21 Operating Instructions Manual

5. Entry menus

The entry menus can be used to call up and check various
functions of the exhaust-gas measuring instrument.
5.1 Functions that can be called up during the warm-up
phase
You call up the warm-up menu during the warm-up phase by
pressing the E key (5).
You select the submenu options by pressing the
The following submenu options can be selected in the warm-up
menu:
Leak test (see section 4.1.3)
LEAC
5UPP Service menu (only via password for After-Sales Service)
Prod Production menu (not relevant)

5.2 User menu

You call up the user menu from the pause mode by pressing the
E key (5).
You select the submenu options by pressing the
You execute the submenu option selected by pressing the E key (5).
The following submenu options can be selected in the user menu:
PUL5E Setting the number of pulses for engine-speed measure-
ment with the ETT 6.22 (see section 6.3)
A0 Zero adjustment (see section 5.2.1)
LEAC Dichtigkeitsprüfung (siehe Kapitel 4.1.3)
HC-uP HC residue test (see section 5.2.2)
PEF Display of HC sum factor (see section 5.2.3)
v
5UPP same as under section 5.1
Prod same as under section 5.1
5.2.1 Zero adjustment
This submenu option can be used to carry out zero adjustment.
To perform zero adjustment, the measuring instrument switches
a solenoid-operated valve over to ambient air.
A 0
key (4).
– Start zero adjustment by pressing the E key (5).
The instrument is flushed with zero gas for 30 seconds.
F L U 5 H
After this time, zero adjustment is performed.
key (4).
After zero adjustment has been completed, either the message
PA55S or FA1L is displayed.
The exhaust-gas measuring instrument the automatically returns
to the user menu.
5.2.2 HC residue test
This submenu option can be used to carry out an HC residue test.
H C - u P
– Start the HC residue test by pressing the E key (5).
. . .
2 5
A 0
. . .
0
H C t
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