Harley Davidson 2011 Touring Models. Electrical Diagnostic Manual - page 13
5.6
TURN SIGNALS
DESCRIPTION AND OPERATION
TSM/TSSM/HFSM receives battery power through the ignition.
The operation functions the same way whether you have a
TSM, a TSSM or a HFSM. The TSM communicates with the
other modules on the vehicle through the serial data circuit.
The turn signal switches are inputs to the TSM. When the turn
signal switch is pressed the switch closes and power flows to
TSM. This signals the TSM to supply voltage and control the
flash rate to the turn signals and the turn signal indicator. If the
turn signal switches are pressed at the same time and held
down the TSM initiates the four-way flashers.
The TSM also monitors the position of the clutch and neutral
switches to determine if it is safe to start the vehicle. The BAS
is internal to the TSM and allows the TSM to determine if the
vehicle is tipped over. If a tip over event occurs, the TSM sends
a signal to the ECM to turn off the engine.
The TSM has three major functions:
•
Controls the turn signals.
•
Serves as the BAS.
•
Monitors the clutch and neutral switches to prevent starter
engagement.
BAS Operation
The TSM/TSSM/HFSM uses an internal BAS to monitor vehicle
position. Under normal driving conditions the TSM/TSSM/HFSM
uses the BAS along with speed input provided from the ECM
to know when to automatically cancel the turn signals after a
turn. The TSM/TSSM/HFSM will disable turn signal lamps and
starter activation and will send a message to the ECM to shut
down the ignition and the fuel pump if the vehicle is tipped over.
The odometer will display "tIP" when a tip-over condition is
present.
BAS Restart
To restart the vehicle after shutdown has occurred:
1.
Return the vehicle to an upright position.
2.
Cycle the IGN OFF-ON before restarting the vehicle.
Manual Cancellation
If you want to stop the turn signals from flashing, briefly press
the turn signal switch a second time.
If you are signalling to turn in one direction and you press the
switch for the opposite turn signal, the first signal is cancelled
and the opposite side begins flashing.
Automatic Cancellation
Press the left or right turn switch to activate automatic turn
signal cancellation. There is no need to hold the turn switch in
when approaching the turn. The TSM/TSSM/HFSM will not
cancel the signal before the turn is actually completed.
•
When the directional switch is released, the system starts
a 20 count. As long as the vehicle is traveling above 7
mph (11 km/h), the directional will always cancel after 20
flashes if the system does not recognize any other input.
•
If the vehicle speed drops to 7 mph (11 km/h) or less,
including stopped, the directionals will continue to flash.
Counting will resume when vehicle speed reaches 8 mph
(12.9 km/h) and will automatically cancel when the count
total equals 20 as stated above.
•
See
. The turn signals will cancel within two
seconds upon turn completion. A sensor inside the
TSM/TSSM/HFSM cancels the signal after the vehicle has
been returned to an upright position.
NOTE
The bank angle cancellation function has an automatic calibra-
tion feature. Ride the vehicle for 0.25 mile (0.4 km) at steady
speeds (upright) to calibrate the system. Performance of bank
angle function may not be optimal until this calibration is per-
formed. This self-calibration is performed automatically every
time the vehicle is started and ridden.
1
2
ed01792
1.
Left 45 degrees
2.
Right 45 degrees
Figure 5-13. Tilting TSM/HFSM
Four-Way Flashing
Use the following method to activate the four-way flashers:
1.
With the ignition switch ON and the security system dis-
armed (models with security only), press the left and right
turn signal switches at the same time.
2.
Turn the ignition switch OFF and arm the security system
if present and desired. The four-way flashers will continue
for two hours.
3.
To cancel four-way flashing, disarm the security system
if necessary, turn the ignition switch ON and press the left
and right turn signal switches at the same time.
This system allows a stranded vehicle to be left in the four-way
flashing mode and secured until help is found.
If the security system is disarmed while the four-way flashers
are active, the lights will flash as follows:
5-16 2011 Touring Diagnostics: Accessories, Horn, Lighting and Security