Battery (Parasitic) Load Test
TOOLS REQUIREDJ 38758 Parasitic Load Test Switch
NOTE: The parasitic load test switch should never be turned to the "OFF" position with the engine running; damage could occur to the attached ammeter or the vehicle electrical system.
1. Remove the battery cable from the battery negative terminal.
2. Install the parasitic load test switch male end to the negative battery terminal.
Tighten
Tighten the J 38758 to 15 N.m (11 lb ft).
NOTE: Refer to Fastener Notice in Cautions and Notices.
3. Turn the test switch knob to the off position.
4. Install the negative battery cable to the female end of the test switch tool.
Tighten
Tighten the negative battery cable to 15 N.m(11 lb ft).
NOTE: Refer to Fastener Notice in Cautions and Notices.
5. Turn the test switch knob on the ON position.
6. Open the trunk in order to access the rear compartment fuse block.
7. Turn the ignition switch to the LOCK position and remove the ignition key.
8. Connect the DMM terminals on the test switch tool.
9. Turn the test switch tool knob to the OFF position to allow current to flow through the ammeter.
10. After 20 minutes check the current reading. If the current draw is above 30 milliamps the load can either be that a module on the Class 2 serial data line is not going to "sleep" or that the load is related to a traditional excessive current draw such as lumbar seat switch stuck on.