I installed the multifunction turn signal and now the horn doesnt work.

Do you know how to do automotive electrical testing ? Do you know what a relay is and how it works ? Turn signals flashing fast , could be aburnt bulb , flasher module .
VEHICLE RELAYS Operation Diagnosis
Turn Signal Lamps
The HAZ LP fuse in the underhood fuse block supplies battery positive voltage to the multifunction hazard switch assembly. The TURN fuse in the IP fuse block supplies Ignition positive voltage to the multifunction turn signal switch assembly. With the ignition switch in the RUN or START position, ignition positive voltage is connected through the multifunction turn signal and hazard switch assembly to the flasher module which is grounded at G205. When the turn signal switch is placed in either the left or right position, the circuit is complete from the flasher module to the turn signal lamps and to ground. The flasher module 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 activated, all turn signal lamps will flash including both IPC turn indicators. The front turn signals are grounded at G111 and G112. The rear turn signals are grounded at G475 and G422 on the pickup and G450 on the utility.

What is the problem? I need specifics.
turn signal doesn't work or wipers--horn--dimmer switch--what. Maybe a problem with multifunction switch?

Which insturment cluster does your's have ? electronic instrument cluster or standard instrument cluster !

Standard insturment cluster - speedo / odometer
Speedometer/Odometer
The speedometer and odometer provides speed information based on a speed/distance pulse signal from the vehicle speed sensor (VSS). The VSS is mounted on the speedometer driven gear in the transmission.
Could be the VSS is bad .
Horn The horn system includes the following:

• horn relay
• horn
• clock spring
• steering wheel control switch harness
• steering wheel pad horn switch, which is part of the driver side air bag module. For additional information, refer to Section 501-20B .

The horn is located behind the front bumper mounted to the radiator support.

Is the air bag light lit on the insturment cluster ? If it is the clock spring could be the problem . If not lit check the circuits from the horn relay .

VEHICLE RELAYS Operation Diagnosis .

Which headlamps don't work ? Low beams , high beams , both ?

• The high beams are inoperative

• Bulbs.
• Circuitry.
• Multifunction switch.

• GO to Pinpoint Test C .

• The low beams are inoperative

• Bulbs.
• Circuitry.
• Headlamp switch.
• Multifunction switch.
• LCM.

• GO to Pinpoint Test D .

Principles of Operation
NOTE: Due to varying wattage ratings and resulting current draw, certain aftermarket headlamp bulbs may cause the lighting control module (LCM) to shut down the short circuit protection, resulting in the low beams becoming inoperative. Verify that the headlamp bulbs meet Ford specifications.
Headlamp System The headlamp system consists of:

• two aerodynamic halogen headlamp bulbs and retainers
• headlamp switch
• multifunction switch
• lighting control module (LCM)
• circuit wiring and circuit protection

In normal operation:

• With the multifunction switch in the low beam position, power is supplied by the LCM to the low beam elements through the multifunction switch.
• With the multifunction switch in the high beam position (forward detent), power is supplied to the high beam elements and to the high beam indicator in the instrument cluster.
• When the multifunction switch is pulled toward the steering wheel, the flash-to-pass switch (part of the multifunction switch) is closed and power is supplied to the high beam elements. When the switch is released, they return to low beam operation.
• The battery saver feature of the LCM will automatically turn off the courtesy lamps, demand lamps, headlamps, or parking lamps under the following conditions:
  • The ignition switch is in the OFF position.
  • The headlamp switch is in parking lamps ON or headlamps ON positions.
  • After 10 minutes.

Headlamp Switch The headlamp switch is a multi-position switch.

• The positions include OFF, PARK, and HEAD.
• With the headlamp switch in the PARK position (first detent), a signal is supplied to the LCM which powers the front parking lamps, the tail lamps, the side marker lamps, and the license lamp.
• With the headlamp switch in the HEAD position, power is supplied to the headlamps through the LCM and the multifunction switch.
• The panel dim switch (part of the headlamp switch) is located above the headlamp switch. The panel dim switch operates only with the parking lamps or headlamps on.
• When the panel dim switch is held in the up position, the instrument panel lighting will progressively brighten.
• When the panel dim switch is held in the down position, the instrument panel lighting will progressively dim.

For additional information, refer to Section 413-00 .
Headlamps On Warning Chime If the headlamp switch is left in either the PARK or HEAD position and the driver door is opened, the LCM will sound a headlamps on reminder chime when the following conditions occur:

• The ignition switch is OFF with the ignition key out.
• The driver door is ajar.

For additional information, refer to Section 413-09 .

Inspection and Verification

1. Verify the customer concern by operating the system.

1. Visually inspect for obvious signs of mechanical and electrical damage.

Visual Inspection Chart Mechanical Electrical

• Headlamp switch

• Central junction box (CJB) fuse(s):
  • 6 (15A)
  • 15 (15A)
  • 21 (15A)
  • 23 (15A)
  • 27 (20A)
• Battery junction box (BJB) HI-BEAM HEADLIGHTS (20A) fuse
• Circuitry
• Headlamp bulb
• Lighting control module (LCM)
• Loose or corroded connections

dear,

firstly make all the bulbs glow in the indicator segment.
this will moderate the flasher speed as due to even one bulb fused, causes other bulbs to glow at high rate.

thanx

STEP BY STEP INSTRUCTION First, any time you work around the steeringcolumn you it is a must to disable the air bag system you will do this my disconnectingthe battery. After you disconnect the battery wait at least 5 minutes before proceeding. 1. Ifyou have tilt remove the tilt actuator arm by firmly pulling straight out. 2. Removethe upper and lower trim covers. 3. Removethe wire harness assembly from the wire harness strap. 4. Disconnect the turn signal andmultifunction switch assembly connector from the SIR system coil connector.This is alongside the steering column there is an 8mm bolt in the center of theconnector that must be removed to disconnect the connector halves. 5. Slide the 2 connectors of the turnsignal and multifunction switch assembly out of the bulkhead connector. With a smallscrewdriver slightly pry between the connectors to release them. 6. Removethe 2 pan head tapping screws and from the turn signal and multifunction switchassembly. 7. Removethe turn signal and multifunction switch assembly from the steering column tilthead assembly. INSTALLATION PROCEDURE 1. Installthe turn signal and multifunction switch assembly onto the steering column tilthead assembly. 2. Screwthe 2 pan head tapping screws and into the turn signal and multifunctionassembly.3. Slidethe 2 connectors of the turn signal and multifunction switch assembly into thebulkhead connector. 4. Connectthe turn signal and multifunction switch assembly connector to the SIR coilconnector. 5. Installthe wire harness assembly (1) into the wire harness strap (2). 6. Installthe upper and lower trim covers. 7. Installtilt actuator arm. 8. Reconnectthe battery.

Multifunction Turn Signal Lever Replacement - On Vehicle

Removal Procedure

1. Verify that the multifunction turn signal lever is in the center of the OFF position.
2. Disconnect the negative battery cable.
3. Disable the SIR system.
4. Remove the steering wheel.
5. Remove the steering column trim cover.
6. Remove the steering column knee bolster.
7. Remove the steering column wire harness (1) from the steering column wire harness retainer (2).
8. Remove the 2 wire harness straps from the steering column wire harness (1).
9. Remove the steering column bulkhead connector from the vehicle wire harness.
10. Disconnect the connectors from the multifunction turn signal lever steering column bulkhead connector.

1. Remove the retaining bolts (1) from the multifunction turn signal lever (2).
2. Remove the multifunction turn signal lever (2) from the steering column.

Installation Procedure

1. Install the multifunction turn signal lever (2). Use a small flat-blade in order to compress the electrical contact and move the multifunction turn signal lever into position.
2. Verify that the electrical contact rests on the canceling cam.

Notice: Refer to Fastener Notice in Service Precaution.

1. Install the retaining bolts to the multifunction turn signal lever.

• Tighten the retaining bolts to 7 Nm (62 inch lbs.) .

1. Connect the gray and black connectors to the multifunction turn signal lever steering column bulkhead connector.
2. Connect the steering column bulkhead connector to the vehicle wire harness.
3. Install the two wire harness straps to the steering column wire harness (1).
4. Install the steering column wire harness (1) to the steering column wire harness retainer (2).
5. Install the steering column knee bolster.
6. Install the steering column trim cover.
7. Verify that the lever is in the center or the OFF position.
8. Install the steering wheel to the steering column.
9. Enable the SIR system.
10. Connect the negative battery cable.

I hope this helps you.

Thanks

Removal & Installataion

1. Verify that the multifunction turn signal lever is in the center of the OFF position.
   
2. Disconnect the negative battery cable.
   
3. Disable the SIR (air bag) system. Refer to the Chassis Electrical Section.
   
4. Remove the air bag module from the steering wheel.
   
5. Remove the steering wheel.
   

Remove the upper and lower steering wheel trim covers using the following procedure.

• Remove the tilt lever assembly.
  
• Remove the two pan head tapping screws from the lower shroud.
  
• Unlock the upper and lower shroud.
  
• Remove the two Torx® head screws from the upper shroud.
  
• Remove the upper shroud.
  

Remove the wire harness straps from the wire harness assembly and detach the wiring harness connectors from the switch side connectors.

Remove the two multifunction turn signal switch screws and remove the multifunction switch assembly from the vehicle.

To install:

1. Install the multifunction switch to the steering column. Use a small flat-blade prytool to compress the electrical contact and move the multifunction turn signal switch into position. Verify that the electrical contact rests on the canceling cam. Install the screws and tighten to 62 inch lbs. (7 Nm).
   
2. Route the wire harness along the steering column jacket assembly and secure into the wire harness strap. Install a new wire tie to the upper tilt head assembly and another lower along the wiring harness, as the original installation.
   
3. Verify that the lever is in the center of the OFF position.
   
4. Install the upper and lower steering column shrouds.
   
5. Route the SIR connector through the steering wheel, align the scribe mark on the steering wheel made at removal, with the slash mark on the steering shaft and install the steering wheel. Install the steering shaft nut and torque to 30 ft. lbs. (41 Nm).
   
6. Install the horn contact leads and the air bag connector to the back of the air bag. Make sure the CPA wedge is in place to secure the connector. Install the air bag by gently pushing on both the right and left sides of the air bag until the retaining springs engage.
   
7. Enable the SIR system by connecting the yellow 2-way connector at the base of the steering column and installing the air bag fuse.
   
8. Connect the negative battery cable. Test the horn, turn signals and headlight operation.
   

Removal & Installataion

1. Verify that the multifunction turn signal lever is in the center of the OFF position.
   
2. Disconnect the negative battery cable.
   
3. Disable the SIR (air bag) system. Refer to the Chassis Electrical Section.
   
4. Remove the air bag module from the steering wheel.
   
5. Remove the steering wheel.
   

Exploded view of the shroud-type steering column showing shrouds, wiring and multifunction switch that includes the headlamp function

1. Remove the upper and lower steering wheel trim covers using the following procedure.
2. Remove the tilt lever assembly.
   

• Remove the two pan head tapping screws from the lower shroud.
  
• Unlock the upper and lower shroud.
  
• Remove the two Torx® head screws from the upper shroud.
  
• Remove the upper shroud.
  

1. Remove the wire harness straps from the wire harness assembly and detach the wiring harness connectors from the switch side connectors.
   
2. Remove the two multifunction turn signal switch screws and remove the multifunction switch assembly from the vehicle.
   

To install:

1. Install the multifunction switch to the steering column. Use a small flat-blade prytool to compress the electrical contact and move the multifunction turn signal switch into position. Verify that the electrical contact rests on the canceling cam. Install the screws and tighten to 62 inch lbs. (7 Nm).
   
2. Route the wire harness along the steering column jacket assembly and secure into the wire harness strap. Install a new wire tie to the upper tilt head assembly and another lower along the wiring harness, as the original installation.
   
3. Verify that the lever is in the center of the OFF position.
   
4. Install the upper and lower steering column shrouds.
   
5. Route the SIR connector through the steering wheel, align the scribe mark on the steering wheel made at removal, with the slash mark on the steering shaft and install the steering wheel. Install the steering shaft nut and torque to 30 ft. lbs. (41 Nm).
   
6. Install the horn contact leads and the air bag connector to the back of the air bag. Make sure the CPA wedge is in place to secure the connector. Install the air bag by gently pushing on both the right and left sides of the air bag until the retaining springs engage.
   
7. Enable the SIR system by connecting the yellow 2-way connector at the base of the steering column and installing the air bag fuse.
   
8. Connect the negative battery cable. Test the horn, turn signals and headlight operation.
   

1. Disable the SIR system.
   
2. Remove the upper and lower trim covers.
   
3. Remove the knee bolster.
   NOTE The abrasion sleeve located on the steering column wire harness assembly must be reinstalled. Make note of what connector is coming out of the abrasion sleeve for installation purposes.
   
   
4. Remove the wire harness assembly from the wire harness strap.
   
5. Disconnect the turn signal and multifunction switch assembly connector from the SIR system coil connector.
   
6. Slide the 2 connectors of the turn signal and multifunction switch assembly out of the bulkhead connector.
   
7. Remove the 2 pan head tapping screws and from the turn signal and multifunction switch assembly.
   
8. Remove the turn signal and multifunction switch assembly from the steering column tilt head assembly.
   

To install:
NOTE Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

CAUTION Be sure that the electrical contact of the turn signal and multifunction switch assembly (2) rests on the turn signal cancel cam assembly.

CAUTION The abrasion sleeve must be installed back onto the steering column wire harness assembly. The ignition lock cylinder case wires and connector must be hanging out of the middle of the abrasion sleeve.

1. To install, reverse removal procedure.
   
2. Tighten the following to specification.
   
   • Top pan head tapping screw: 27 inch lbs. (3 Nm).
     
   • Side pan head tapping screw: 62 inch lbs. (7 Nm).
     

CAUTION When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling . Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.

are you sure bulbs are good ?? double check bulbs also make sure there is a ground wire from your light fixture is grounded to the body near by this might be causing your problem .. usually if front ones blink fast rear bulbs are bad ... thanks Jerry holler if you need more.

First thing to check are the fuses for horn and lights