Bosch BAT 155 Operating Instructions Manual page 9

3. Follow screen instructions to check CRANKING VOLTS.
INTERPRETING TEST RESULTS:
CRANKING VOLTS NORMAL
CRANKING VOLTS LOW
CRANKING VOLTS NOT
DETECTED
4. Follow screen instructions to perform a CHARGING SYSTEM TEST at Idle.
INTERPRETING TEST RESULTS:
ALT. IDLE VOLTAGE: LOW
ALT. IDLE VOLTAGE: NORMAL
ALT. IDLE VOLTAGE: HIGH
Battery Testing | BAT 155 Battery Tester | 9 | en
The system is showing a normal draw. Press
the Enter Key
system test.
The cranking voltage is below normal limits,
troubleshoot the starter with manufacuturer's
recommended prodcedure.
Cranking voltage is not detected.
The alternator is not providing sufficient cur-
rent to the battery. Check the belts to ensure
the alternator is rotating with engine running. If
the belts are slipping or broken, replace the
belts and retest. Check the connections from
the alternator to the battery. If the connection
is loose or heavily corroded, clean or replace the
cable and retest. If the belts and connections
are in good condition, replace the alternator.
The system is showing normal output from the
alternator, no problems detected. Press the
Enter Key to advance to the next screen.
The voltage output from the alternator to the
battery exceeds the normal limits of a functio-
ning regulator. Ensure all connections are tight
and that there is a good ground connection.
Altenator may need to be replaced.
to perform the charging
BAT 155 | REV. A | October 2020