Output Test - Bosch ACS 553 Service Manual

Diagnostics and Testing
8. If the calculation is accepted, the following
is displayed:
9. Typically adding 1.00 kg (2 lb) is sufficient
to perform this test.
10. If OK icon is selected and the calibration is
accepted, the following displays:
11. Select OK icon to terminate.
12. If the calibration is not accepted, a Calibration
Failed screen is displayed as shown in Step 7.
13. Selecting ESC icon returns to Calibrate
Load Cell in the service menu.
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ACS 553, ACS 563 Service Manual

Output Test

The Output Test checks the electrical outputs from
the power board and wiring harnesses to the various
solenoids, fan, vacuum pump, and compressor.
This test is useful as a troubleshooting method to
determine if a device is operating properly or not.
1. From the Service Menu, scroll to Output Test.
2. Select OK icon. The following displays:
Placeholder X indicates the state of the output
device. A 1 or 0 indicates whether the device
is ON or OFF. A list of the tests is provided in
the table below:
OUTPUT TEST
Low-Side Inlet Solenoid S4
High-Side Inlet Solenoid S5
Air Purge Solenoid S6
Recover Solenoid S11
Oil Return Solenoid S13
Oil Inject Solenoid S14
Vacuum Pump
Compressor
Alert Beeper
Tank liquid solenoid S7
Oil Drain Solenoid S8
Vacuum Solenoid S9
3. As the tests are highlighted, select
ON/OFF icon. The state will change from 0
to 1. There should be a click heard as the
solenoids are energized, the motors of the
fan, vacuum pump, and compressor should
start, the beacon, if installed will flash once,
and the beeper will sound.
32
Fan
Robert Bosch GmbH