B Series Truck 4WD L4-2606cc 2.6L SOHC (1992)
Battery: Technical Service Bulletins
Battery - Ignition OFF Draw Current Diagnosis
Bulletin No.: 003/96
Issued: 12/26/96
Revised
Category
G
Applicable Model/s
See Below
Subject:
CHECKING POINTS FOR DEAD BATTERY
APPLICABLE MODELS
All models except M - Edition MX-5 Miata
DESCRIPTION
The following information provides basic instructions for measuring dark current and guidelines to determine if the current is excessive.
DARK CURRENT
Current which flows from the battery even when the ignition is in the OFF position and the key removed. This current is used to maintain memory
functions in the radio, clock, CPU and other electronic equipment. Current will vary depending on the vehicle's electronic components.
Average Dark Current = Less than 20 mA.
NOTE:
If the ignition key is in the ACC position, current flow may be up to 250 mA. This amount of current is capable of draining the battery within 2 - 3
days.
DARK CURRENT CHECKING PROCEDURE
1.
Turn ignition OFF and remove key from ignition.
2.
Turn off all electrical loads and confirm that doors and trunk lid are completely closed.
3.
Measure voltage from the battery.
^
If less than 10V, connect a fully charged battery parallel to the vehicle battery using a booster cable.
NOTE:
Do not disconnect the battery cables during this step (if the battery cables are disconnected with any circuits which still operate when the ignition
switch is removed, the problem symptom may not be duplicated and the correct dark current can not be measured even if the cable is reconnected).
4.
Use a jumper wire to connect the negative battery cable to the negative battery post. Refer to Fig. 1.
