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Shawn
Shawn, Auto Service Technician
Category: Ford
Satisfied Customers: 3756
Experience:  16 years experience Ford,Nissan and Honda dealership in all areas
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1996 ford explorer: turn signal works on the left, the right..relay

Resolved Question:

I have a 1996 ford explorer . turn signal works on the left, the right works some of the time and sometimes buzzes. Is that the MFS or the relay , anyway to narrow it down Thanks STU
Submitted: 6 years ago.
Category: Ford
Expert:  Shawn replied 6 years ago.
HiCustomer




Thank you for asking your question on JustAnswer. The most common cause of the problem you are having is a defective Multi function switch, This is typically a multifunction switch (turn signal/combination switch) problem. Remove the steering column shrouds, and unplug the multifunction switch. If the problem never occurs with the switch unplugged, replace the multifunction switch. I am sending instructions in pdf format on how to replace, hope this helps you out.





CLICK HERE FOR MULTI FUNCTION SWITCH REPLACEMENT




CLICK HERE FOR STEERING COLUMN SHROUD REMOVAL INSTRUCTIONS





TURN SIGNAL LAMPS/HAZARD FLASHER LAMPS INOPERATIVE


Q1 ISOLATE FLASHER UNIT

  • Substitute known good flasher unit.
Do turn signals and hazard lamps operate?
Yes No
REPLACE flasher unit. GO to Q2 .

Q2 FLASHER UNIT GROUND

  • Check for continuity between flasher unit connector ground terminal (BK) and clean chassis ground.
Is there continuity?
Yes No
GO to Q3. REPAIR ground circuit.

Q3 CIRCUIT PROTECTION

  • Check fuses 5 and 1 (Aerostar) or fuses 21 and 22 (Ranger, Explorer).
Are fuses blown?
Yes No
REPLACE fuses. REPLACE turn/hazard switch.

PINPOINT TEST R: INDIVIDUAL TURN SIGNAL/FLASHER LAMP INOPERATIVE


R1 ISOLATE BULB AND SOCKET

  • Remove bulb.
  • Check bulb for broken filament. Check bulb socket for damage or corrosion.
Are bulb and socket serviceable?
Yes No
GO to R2 . SERVICE as required.

R2 BATTERY FEED TO LAMP

  • Turn signal switch to side of vehicle with inoperative lamp.
  • Check for battery voltage at lamp battery feed wire.
Is battery voltage present?
Yes No
GO to R3 . REPAIR open in battery feed wire.

R3 GROUND CIRCUIT

  • Check for continuity between lamp ground wire and clean chassis ground.
Is there continuity?
Yes No
INSPECT lamp assembly for condition that could prevent lamp from coming on. REPAIR open in ground circuit.

PINPOINT TEST S: TURN SIGNAL LAMPS ON CONTINUOUSLY


S1 ISOLATE FLASHER UNIT

  • Substitute known good flasher unit.
Are turn signals off?
Yes No
REPLACE flasher unit. REPLACE turn/hazard switch.

PINPOINT TEST T: HAZARD FLASHER INOPERATIVE (RANGER, EXPLORER ONLY)


T1 CIRCUIT PROTECTION

  • Check fuse 21 in interior fuse panel.
Is fuse blown?
Yes No
REPLACE fuse. GO to T2 .

T2 ISOLATE FLASHER UNIT

  • Substitute known good flasher.
Do hazard lamps operate?
Yes No
REPLACE flasher unit. GO to T3.

T3 BATTERY FEED TO FLASHER UNIT

  • Check for battery voltage at flasher unit connector battery feed terminal (R/W).
Is battery voltage present?
Yes No
REPLACE turn/hazard switch. REPAIR open in Circuit 383 (R/W).





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