Where is the fuse located that controls the turn left and right function?

The turn signals are controlled by the BCM
Turn Signal Lamps
The body control module (BCM) is responsible for controlling the turn signals and hazard lamps. When the turn signal switch is placed in either the left turn or right turn position, the BCM receives a signal from the turn signal switch. The BCM then sends an on-off voltage signal to either the left or right turn signals and their instrument panel cluster (IPC) indicator. When the hazard switch is pressed, the BCM receives a signal from the hazard switch. The BCM then will send an on-off voltage signal to all the turn signal lamps. All the turn signal lamps will flash including both IPC turn signal indicators.

I would suspect a problem with the BCM or maybe corrosion in the under hood fuse box . Wires from the BCM to the front turn signals go through the underhood fuse box.
Your best bet ,take it to a qualified repair shop that has a diagnostic scan tool that can read BCM DTC'S - diagnostic trouble codes
DTC B3948 Left Front Turn Signal Circuit
The body control module (BCM) controls the left front turn signal, hazard lamp, and daytime running lamp (DRL). The BCM supplies voltage to control the lighting functions. The BCM monitors the left turn signal lamp supply voltage circuit for proper operation.
DTC B3949 Right Front Turn Signal Circuit

Doesn't have a turn signal flasher , use's lighting control module .
Turn Signal and Hazard Lamps The turn signal system consists of:

• turn signal miniature bulbs (13465).
• turn signal indicators in the instrument cluster (10849).
• lighting control module.
• multi-function switch (13K359).
• circuit wiring and circuit protection.

Power is supplied to the lighting control module through instrument panel Fuse 6 (10A). This fuse is hot in START or RUN. The lighting control module is connected to the turn signal switch portion of the multi-function switch. Ground is provided to the lighting control module and the turn signal miniature bulbs through Circuit 57 (BK).
Turn signal functions are performed by double filament bulbs in lamp assemblies located next to the headlamps. The turn/hazard function uses the second filament of the appropriate bulb(s).

• With the multi-function switch in the right turn position, power is supplied to the RH front and rear turn signal miniature bulbs and the right turn indicator in the instrument cluster.
• With the multi-function switch in the left turn position, power is supplied to the LH front and rear turn signal miniature bulbs and the left turn indicator in the instrument cluster.

Do you know what a lighting control module is ?
Turn Signal and Hazard Lamps The turn signal system consists of:

• turn signal miniature bulbs (13465)
• lighting control module
• multi-function switch (13K359)
• indicator bulbs in the virtual image instrument cluster (10849)
• circuit wiring and circuit protection

Turn signal system operates as follows:

• The multi-function switch is protected by fuse junction panel Fuse 3 (10A). This fuse is hot in RUN.
• Circuits 104 (LB/O) and 105 (R/W) connect lighting control module to the left and right turn signal switches of the multi-function switch.
• Ground is provided to the lighting control module and the turn signal miniature bulbs through Circuit 57 (BK).
• Turn signal functions are performed by double filament bulbs in lamp assemblies located next to the headlamps.
• The turn/hazard function utilizes the second filament of the appropriate bulb(s).
• With the multi-function switch in the right turn position, power is supplied to the RH front and rear turn signal miniature bulbs and the RH turn indicator in the instrument cluster.
• With the multi-function switch in the left turn position, power is supplied to the LH front and rear turn signal miniature bulbs and the LH turn indicator in the instrument cluster.
• Do you know what diagnostic trouble codes are ?

Section 17-01: Lighting, Exterior 1997 Continental Workshop Manual DIAGNOSIS AND TESTING Procedure revision date: 07/29/1996 Turn Signal Lamps/Hazard Warning Flasher Lamps
Inspection and Verification

1. Verify the customer's concern by operating the turn signal/hazard flasher lamps to duplicate the condition.

1. Inspect to determine if one of the following mechanical or electrical concerns apply:
   
   VISUAL INSPECTION CHART Mechanical Electrical
   • Damaged multi-function switch.
   • Circuitry open/shorted.
   • Fuse junction panel fuses:
     • 1 (10A)
     • 3 (10A)
     • 7 (15A)
     • 13 (15A)
     • 19 (10A)
     • 20 (10A)
     • 25 (10A)
     • 31 (15A)
   • Power distribution box Fuse 16 (20A)
   • Bulb open.

1. If inspection reveals an obvious concern that is readily serviced, correct the concern before continuing with Inspection and Verification.

1. If a concern remains after the inspection, connect the Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to the data link connector (DLC) located beneath the instrument panel to perform DATA LINK DIAGNOSTICS test. If the NGS responds with NO RESPONSE/NOT EQUIPPED for the lighting control module, GO to Pinpoint Test CA. If the DATA LINK DIAGNOSTICS test is passed for the lighting control module, retrieve continuous DTCs and execute Self Test Diagnostics for the lighting control module to retrieve current DTCs.

1. If self test is passed and no DTCs are retrieved, go to the Symptom Chart to continue diagnostics.

1. If DTCs are retrieved, go to the Lighting Control Module (LCM) Diagnostic Trouble Code (DTC) Index to continue diagnostics.

1. If the lighting control module cannot be accessed by the NGS, go to Pinpoint Test CA.

Rotunda Service Bay Diagnostic System (SBDS®) 001-00001 may also be used to diagnose this system.
your best bet mite be to take it to a qualified repair shop. Unless you have a scan tool that can check for DTC'S an know how to use a wiring diagram an DMM - digital multi-meter to test electrical circuits .

Located in the central junction box . Fuse F1.13 10amp. CJB - under right side of dash .

F1.8 10 Electronic Automatic Temperature Control (EATC) module (19980), Exterior

rear view mirror, left, Exterior rear view mirror, right

F1.5 7.5 Powertrain Control Module (PCM) (12A650), Deactivator switch, Third row

folding seat relay, left, Third row folding seat relay, right, Power lift gate

module, Brake pedal position switch (13480), Sunload sensor (19E663),

Clock (15000), Function selector switch assembly, front, Electronic Automatic

Temperature Control (EATC) module (19980). Don't think you have a fuse problem ! More then likely the HVAC control module is bad , they do go bad
Don't

You don't have fire , never heard it called that before ! Battery voltage , power but never fire ! An open CTSY fuse located in the I/P fuse block will affect the operation of the right front turn signal only
Turn Signal/Hazard Lamps When the turn signal switch is placed in either the left or right position, a ground signal is completed from the turn signal switch to the BCM. When the hazard flasher switch is activated, a ground signal is completed from the turn signal/hazard switch to the BCM. The BCM then sends an ON-OFF voltage signal through the fuses to the appropriate turn signal and side repeater (export only) lamps or to all of the turn signal fuses for hazard operation. The driver door switch and passenger door switch also receive voltage from the BCM turn signal supply voltage circuits for the mirror turn signals. The door switches have no function or control of the mirror turn signals other than a pass through connection for the circuits. The audio chime is also activated when the turn signals are ON. The instrument panel cluster (IPC) receives the signals to activate the turn signal indicators over the GMLAN serial data system. When the hazard switch is pressed, all turn signal lamps will flash including both IPC turn indicators.
Ground is applied at all times at G201 to the turn signal/multifunction switch. The turn signal lamps may only be activated with the ignition switch in the ON or START position. When the turn signal/multifunction switch is placed in either the TURN RIGHT or TURN LEFT position, ground is applied to the body control module (BCM) through either the right turn or left turn signal switch signal circuit. The BCM then applies a pulsating voltage to the front and rear turn signal lamps through their respective control circuits.
.

it is probably a flasher relay,local auto parts house will have one,easy change,unplug and replug,usually round barrell looking sometimes silver in color.underdash either in harness or fuse box sometimes,they could help you locate it.

there is not a flasher unit that controls each turn signal seperately...if the right side turn signals still function...then the left side has to have a front or rear bulb that is bad...there is a seperate flasher for the turn signals...and the 4-way flasher...both are located on the drivers side under the dash above the fuse-block...

Relay Center Cooling Fan Controller

• Located behind the left side of the instrument panel.
  

Cooling Fan Controller Module

• Located behind the right side of the instrument panel.
  

Cooling Fan Relay

• Located in the air conditioning cooling fan control module.
  

Electronic Control Assembly

• Located under the left side of the instrument panel.
  

Electronic Engine Control Power Relay

• Located behind the glove box on the right side of the instrument panel.
  

Fuel Pump Relay

• Located behind the glove box.
  

Horn Relay

• Located in the fuse block.
  

Let me know if this helps. If not, let me know.

Circuit Protection The fuse panel is located below and to the left of the steering column.
Fuses are a one-time circuit protection. If a circuit is overloaded or shorts, the fuse will blow thus protecting the circuit. A fuse will continue to blow until the circuit is repaired.

Main fuse box located on driver's side to the left of the steering wheel, above the brake pedal.

Access the fuse panel from the left of the steering column Relay Center Cooling Fan Controller

• Located behind the left side of the instrument panel.
  

Cooling Fan Controller Module

• Located behind the right side of the instrument panel.
  

Cooling Fan Relay

• Located in the air conditioning cooling fan control module.
  

Electronic Control Assembly

• Located under the left side of the instrument panel.
  

Electronic Engine Control Power Relay

• Located behind the glove box on the right side of the instrument panel.
  

Fuel Pump Relay

• Located behind the glove box.
  

Horn Relay

• Located in the fuse block.
  

Replacement

1. Access the fuse panel from the left of the steering column.
2. Locate the blown fuse and pull out. DO NOT TWIST.
3. Take note of the ampre number written on the top of the fuse. To install:
   
4. Push a new fuse of the same ampre into the receptacle, making sure the contact is being made on both sides of the fuse.

LOCATIONS Headlights and Highbeam Indicator

• One 18 amp circuit breaker (22 amp in 1987 vehicles) incorporated in the lighting switch.

Front and Rear Marker, Side Parking, Rear and License Lamps

• One 15 amp circuit breaker incorporated in the lighting switch.

Windshield Wiper

• One 4 1⁄2 amp circuit breaker located in the windshield wiper switch.

Power Windows

• Two 20 amp circuit breakers located in the starter relay and the fuse block.

Power Seats and Power Door Locks

• One 20 amp circuit breaker located in the fuse block.

Hazard Flasher REMOVAL & INSTALLATION NOTE: The hazard warning flasher is located on the rear side of the fuse panel.

1. Locate the hazard flasher in the fuse panel.
2. Pull the flasher out. DO NOT TWIST. To install:
   
3. Push new flasher into place making sure a good contact is made with both terminals.
4. Test flasher to make sure they function properly.

Various Relays LOCATION Cooling Fan Controller

• Located behind the left side of the instrument panel.

Cooling Fan Controller Module

• Located behind the right side of the instrument panel.

Cooling Fan Relay

• Located in the air conditioning cooling fan control module.

Electronic Control Assembly

• Located under the left side of the instrument panel.

Electronic Engine Control Power Relay

• Located behind the glove box on the right side of the instrument panel.

Fuel Pump Relay

• Located behind the glove box.

Horn Relay

• Located in the fuse block.

Fig. 1: Main fuse box located on driver's side to the left of the steering wheel, above the brake pedal


This is the best info I could find....I hope this helps ya!