Question about Cars & Trucks
I used a keep alive setup using the diagnostic connector with a good battery. took too long and when battery reinstalled and keep alive disconnected nothing works. everything is dead like there is no battery. is there a main fuse?
Posted by Anonymous on
Yes check the fuse box in engine compartment, will look like something you'd use in your house, maybe 80 amps
Posted on Feb 16, 2019
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Posted on Jan 02, 2017
SOURCE: Blower Motor on 2000 Saturn SL
The blower motor is connected to a termic switch, when the motor is fine and fuse is ok, is the switch that must be replaced.
Ensure the fuse is ok first.
Posted on Oct 02, 2008
make sure the battery cables are clean and tight. check wires on alternater, make sure tight connection. are you sure battery is good?
Posted on Dec 01, 2008
Regulator in alternator obviously faulty, have it bench tested & fixed or replace alternator, and cure your problem.
Posted on May 19, 2009
SOURCE: Instrument panel went dead
Checked Every fuse in the fuse box (no small task).This includes #4 - Power point Instrument Panel, #14 - Day time running lamps (auto lamps doesn't work nor does auto lock), #27 - ignition switch run feed, #35 - Instrument Cluster, #41 - Instrument Cluster, #42 - Delayed Accessory, #45 - Ignition switch run/start feed, #102 - Door locks body security module, #103 - Ignition switch, #110 - Ignition switch, & #116 - Ignition switch. But I also check all other ones as well, they all register OK. AC panel & radio work. Turn signals work. Mileage does not work, trip computer does. So, basically, everything works except auto head-lights, auto locks, and the dash cluster (no MPH, RPM, mileage display, Fuel, Temp, Tran Temp, and Oil Pressure).
Posted on Sep 30, 2009
Well, not necessarily a fuse, but a current draw. You need to find the draw.
Pull the fuse for the interior lights (so you can open doors and not alter your tests) and clock. Take off negative battery cable and put the volt meter or test light in series between batt terminal and cable. If the light lights or volts higer that a couple of volts, disconnect items one at a time and re test.
Start with the alternator, it is the most likely. It has a series of diodes that change current from alternating to DC, when one fails it leaks current. The unit may still charge, but not as well as with good diodes. The only test for diodes is a scope, or take it apart and test them individually. Use ohms and current flow in one direction, reverse test leads and no current. Failed diode will flow or connect in both directions.
Anyways, you will have an answer pretty quick if you test battery current draw and disconnect one system at a time and retest.
Posted on Oct 10, 2010
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Ford Ranger/Explorer/Mountaineer 1991-1999
CONTINUOUS MEMORY CODES
These codes are retained in memory for 40 warm-up cycles. To clear the codes for the purposes of testing or confirming repair, perform the code reading procedure. When the fault codes begin to be displayed, de-activate the test by either disconnecting the jumper wire (meter, MIL or message center) or releasing the test button on the hand scanner. Stopping the test during code transmission will erase the Continuous Memory. Do not disconnect the negative battery cable to clear these codes; the Keep Alive memory will be cleared and a new code, 19, will be stored for loss of PCM power.
KEEP ALIVE MEMORY
The Keep Alive Memory (KAM) contains the adaptive factors used by the processor to compensate for component tolerances and wear. It should not be routinely cleared during diagnosis. If an emissions related part is replaced during repair, the KAM must be cleared. Failure to clear the KAM may cause severe driveability problems since the correction factor for the old component will be applied to the new component.
To clear the Keep Alive Memory, disconnect the negative battery cable for at least 5 minutes. After the memory is cleared and the battery reconnected, the vehicle must be driven at least 10 miles so that the processor may relearn the needed correction factors. The distance to be driven depends on the engine and vehicle, but all drives should include steady-throttle cruise on open roads. Certain driveability problems may be noted during the drive because the adaptive factors are not yet functioning
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