16
Troubleshooting
The keypad’s “Yellow Programming Wire”:
In order to complete many higher-level reprogramming tasks, access
to the keypad’s “yellow programming wire” is required. Access to this
wire is usually intentionally restricted and difficult in an effort to detract
unauthorized manipulation of the security system. Typically, a vehicle
manufacturer will provide an access panel inside the vehicle to allow
users with access to the inside of the vehicle relatively unobstructed
access to the harness. Unfortunately, this is not always the case, and
some vehicles require the keypad to be completely removed from the
vehicle to gain access to the harness at the correct location.
Depending on the model of keypad that is installed on the vehicle, the
yellow programming wire will be located in one of two places.
1. ON EMBEDDED KEYPADS WITH A BLACK
BEZEL (22636-xx)
These keypad are multi-function keypads
with support for many operating modes. For
the purposes of this CAN system manual,
only the CAN modes are discussed. This
keypad has two wire harnesses; one is a 4-
pin CAN connector, the other is a 9-pin
discrete signal connector. In these keypads,
the “yellow programming wire” can be found
securely mounted in the 9-pin discrete signal
connector.
2. ON CHROME e-GRAB CAN-ENABLED KEYPADS (24295-xx)
These keypads have a more restricted level of function support
because of the lack of space within the e-GRAB base. One
consequence of this restriction is being limited to only one
harness coming from the keypad. Since the 9-pin discrete signal
connector is not present on
these keypads, the “yellow
programming wire” does not
have a location to be securely
mounted. Instead, the “yellow
programming wire” is drawn
through the convoluted
sheathing that protects the
CAN wire harness, and then
looped around and tucked
back into the sheathing. While this does protect the wire from
being unintentionally grounded, it can also be difficult to find
during troubleshooting and reprogramming.
Summary of Contents for 24324-02
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