Correcting Fast blink after switching to LED's?
May 26, 2013 | 11:50 PM
#31
nah. he was busy the first weekend and I was tied up the second weekend. Back up at work so hopefully next time home.
Don't believe so.
Did you read the link in my OP? I understand it's the lower voltage that is causing the faster blinking but according to the link in my first post they can tell the BCM that the truck has a different setup on it (not factory, maybe a flat bed that has LED's) and tell it to just blink at a set rate and ignore the voltage.
Guess no one is clicking on the link. Read this.
its simple electronoics, led are diodes which only use .7 volts. the computer doesnt see any current draw 20 you will need a resistor. a simple reprogram wont remap the circuit. power will always take the path or lease resistance. it takes 1 volt to push 1 amp throught a 1 ohm resistor.
Guess no one is clicking on the link. Read this.
The information contained in this bulletin only applies to vehicles that are
to be completed by a second stage manufacturer (upfitter) and may need to
have the Body Control Module (BCM) rear turn signal bulb outage detection
capability restored. The ability of the BCM to detect a rear turn signal bulb
outage is intentionally deleted on chassis cab models and pickups with box
delete option (RPO ZW9). All production vehicles will be manufactured with
one of the following BCM rear turn signal bulb outage detection software
options:
. A standard production vehicle will have BCM software that checks
for two bulbs functioning in each rear turn signal bulb circuit. If one
or more bulbs are inoperative the BCM will “fast flash” the Instrument Panel Cluster (IPC) turn signal indicator as required by Federal
Motor Vehicle Safety Standard (FMVSS) 08 and Canada Motor
Vehicle Safety Standard (CMVSS) 08.
2. A vehicle built with a pickup box delete or chassis cab option will
be produced with a BCM program that has no turn signal bulb
outage detection capability. The IPC turn signal indicator will
flash at the same rate no matter how many turn signal bulbs
are inoperative.
to be completed by a second stage manufacturer (upfitter) and may need to
have the Body Control Module (BCM) rear turn signal bulb outage detection
capability restored. The ability of the BCM to detect a rear turn signal bulb
outage is intentionally deleted on chassis cab models and pickups with box
delete option (RPO ZW9). All production vehicles will be manufactured with
one of the following BCM rear turn signal bulb outage detection software
options:
. A standard production vehicle will have BCM software that checks
for two bulbs functioning in each rear turn signal bulb circuit. If one
or more bulbs are inoperative the BCM will “fast flash” the Instrument Panel Cluster (IPC) turn signal indicator as required by Federal
Motor Vehicle Safety Standard (FMVSS) 08 and Canada Motor
Vehicle Safety Standard (CMVSS) 08.
2. A vehicle built with a pickup box delete or chassis cab option will
be produced with a BCM program that has no turn signal bulb
outage detection capability. The IPC turn signal indicator will
flash at the same rate no matter how many turn signal bulbs
are inoperative.
May 27, 2013 | 09:51 AM
#32
TECH Fanatic
Joined: Jan 2011
Posts: 1,074
Likes: 0
May 27, 2013 | 11:51 PM
#33
I went and asked my dealer if a BCM flash to ignore the bulb out warning was possible back in early 09 and was told it wasn't possible. I never pursued it any further, and they might have been lazy/unaware on the subject, so I'll be curious what you uncover.
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