NST13165-2_A 2019-02-12
Page 8
TROUBLESHOOTING
SYMPTOM - KEYLESS ENTRY
3 Door Does Not Unlock When Keychain Tag Is Swiped or Unlock Switch is Pressed,
But the Green LED Turns On for 6-Seconds
POSSIBLE CAUSE
CORRECTIVE ACTION
3.1.1
Using a voltmeter, check the ground wire to the
solenoid and verify it is making good contact with the
truck chassis ground. If there is no ground, correct the
ground connection.
3.1
The solenoid does not have a ground
connection
3.2
No power to the solenoid
3.3
Solenoid rod is jammed
3.4
Door is jammed
3.5
There is a short in the wire harness or
solenoid
3.6
There is an internal short in the
Antenna/Reader
Using a volmeter, verify there is +12V
on pin #1 red wire), then check for
+12V on pin #3 (gray wire) of the
Antenna/Reader connector when
the green LED is on. If there is no +12V, check the
connector to make sure a crimp or pin is not damaged.
If the harness and crimps are OK, replace the
Anetnna/Reader.
3.2.2
If there is +12V on the Antenna/Reader connector
when the LED is green, check +12V on the solenoid. If
there is no +12V at the solenoid, repair the wire
harness.
3.3.1
If there is power and ground at the correct pins to the
solenoid, check the solenoid itself. if the solenoid rod
does not move when the solenoid or door locking
mechanism is energized, either the solenoid is jammed
or defective. Repair or replace the solenoid.
3.4.1
If the Antenna/Reader and solenoid appear to be
working corrrectly, check the door’s alignment. Adjust
the door as required to operate properly.
3.6.1
If you have verified there is no short in the wire
harness, connection or solenoid, AND YOU
HAVE RESET POWER TO THE
ANTENNA/READER, then the Antenna/Reader
is defective. Replace the Antenna/Reader.
*Note: “Smart switches” with internal circuit breakers protect the
outputs. When the short is corrected, the smart switch must be
reset. To reset the Antenna/Reader, swipe it using the Keychain
Tag or unplug the unit to reset the circuit. There is NO visual
indication that the internal circuit protection has been tripped.
3.2.1
3.5.1
The internal circuit breaker in the
Antenna/Reader module will detect a short in
the wire harness, connector or solenoid.
Locate the short and repair it. Reset the
system by swiping the Antenna/Reader or
pressing the unlock switch (see note below*).
