Basic Battery Conditions and Testing
Proper voltage is key to proper liftgate operation.
State of Charge –vs- Voltage
State of Charge Open Circuit Voltage
100% 12.70V
90% 12.60V
80% 12.50V
70% 12.35V
60% 12.25V
50% 12.10V
40% 11.95V
30% 11.85V
20% 11.70V
10% 11.55V
Charge
Before
Testing
BEFORE YOU START TROUBLESHOOTING
CHECK BATTERY VOLTAGE
10-10 TEST
USING A MULTIMETER SET ON DC VOLTAGE:
OPEN LIFTGATE AND RAISE TO BED LEVEL.
ATTACH NEGATIVE VOLTMETER LEAD TO NEGATIVE
POST ON MOTOR.
ATTACH POSITIVE VOLTMETER LEAD TO POSITIVE
POST ON MOTOR.
ACTIVATE RAISE SWITCH TO DEADHEAD MOTOR.
KEEP SWITCH ACTIVATED FOR 10 SECONDS.
VOLTMETER SHOULD READ 10 VOLTS OR MORE
AFTER 10 SECONDS.
If you have less than 8 volts, batteries are low.
CHARGE BATTERIES AND RETEST.
IF RESULTS ARE SAME:
Do batteries need to be replaced?
Do you have clean, corrosion free connections?
Is circuit grounded properly?
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