Vehicle Preparation - OTC 3181 Mode D'emploi

BATTERY LOAD TESTER
The Battery Load Tester is designed to test the battery condition - a 10
second test indicates if a battery is good and fully charged or faulty. Further
testing will show if the faulty condition is due to a partially charged or a
defective battery (i.e. - bad cells) or a possible problem with the vehicle
electrical system. The test can be performed on partially charged batteries
(with a hydrometer reading of 1225 or higher).
The Battery Load Tester can also be used to check the vehicle charging
system.
TESTING PROCEDURES AND INFORMATION PROVIDED IN THIS
MANUAL ARE INTENDED AS GENERAL GUIDELINES FOR
ENGINE TUNE UP AND ADJUSTMENTS ONLY. CONSULT THE
APPLICABLE VEHICLE SERVICE MANUALS FOR ALL SPECIFIC
TESTS.
DO NOT ACTIVATE AND HOLD THE LOAD SWITCH FOR MORE
THAN 15 SECONDS. THIS WILL OVERLOAD THE TESTER
RESULTING IN DAMAGE AND VOID THE WARRANTY.
BEFORE TESTING, READ AND FOLLOW ALL SAFETY
PRECAUTIONS.

VEHICLE PREPARATION

• Key OFF, Engine OFF.
• Disconnect all battery chargers! Battery cannot be tested while being charged.
• In all multiple battery systems, all batteries must be tested separately. Only
batteries connected in series may remain connected during test. See diagram
below:
TO VEHICLE
Batteries in Series: All batteries are connected from negative (-) terminal
of one to positive (+) terminal of the other, with only one battery's positive (+)
and one other's negative (-) connected to the vehicle. Any number of
batteries can be connected in series, but each battery must be tested
separately. All other types of multiple connections must be disconnected
and isolated from the other.
+ -
+
POS
POS NEG
CAUTION!
-
NEG
4
TO VEHICLE
+ -
POS NEG