Ford: Ford Explorer 1998 Signal Flasher, signal lamps, digital multimeter

Question
My signal flasher and hazard flasher is intermittent.  SOmetimes it flashes sometimes it just gives a green glowing light.
I want to replace the flasher and see if it is that simple but cannot find the flasher.
Where is it?

DO you think this is my problem, or is it in the switch in the steering column?
Thanks.

Answer
do this pinpoint test first then let me know were you need to go.Turn Signal and Hazard Lamps


Special Tool(s)  73 Digital Multimeter or equivalent
105-R0051


Inspection and Verification

Verify the customer concern by operating the turn signal/hazard flasher lamps.
Visually inspect for obvious signs of mechanical and electrical damage.


Visual Inspection Chart  Mechanical Electrical
Damaged switch(es)
Fuse(s)
Damaged wiring harness
Loose or corroded connections



If the fault is not visually evident, determine the symptom and proceed to Symptom Chart.

Symptom Chart

Symptom Chart Condition Possible Sources Action
The Turn Signal Lamps Are Never On
Fuse(s).
Circuitry.
Multi-function switch (13K359).
Indicator flasher (13350).
GO to Pinpoint Test L.

The Hazard Flasher Lamps Are Never On
Fuse(s).
Circuitry.
Multi-function switch.
Indicator flasher.
GO to Pinpoint Test M.

One Turn Signal/Hazard Lamp Is Never On
Turn signal/hazard flasher lamp.
Circuitry.
GO to Pinpoint Test N.

The Turn Signal Lamps Are Always On
Multi-function switch.
REPLACE the multi-function switch.

The Hazard Flasher Lamps Are Always On
Multi-function switch.
REPLACE the multi-function switch.



Pinpoint Tests

 
PINPOINT TEST L: THE TURN SIGNAL LAMPS ARE NEVER ON
CONDITIONS DETAILS/RESULTS/ACTIONS
L1 CHECK THE FUSE

 


Fuse Junction Panel Fuse 10 (7.5A)
 


Is the fuse OK?
Yes
REINSTALL the fuse. GO to L2 .

No
REPLACE the fuse. TEST the system for normal operation. If the fuse fails again, CHECK for short to ground. REPAIR as necessary.
L2 CHECK THE VOLTAGE TO THE INDICATOR FLASHER


Indicator Flasher C214
 

 

Measure the voltage between indicator flasher C214-5, circuit 8 (O/Y), and ground.


Is the voltage greater than 10 volts?
Yes
GO to L3.

No
REPAIR circuit 8 (O/Y). TEST the system for normal operation.
L3 CHECK CIRCUIT 44 (LB) FOR SHORT AND OPEN

 


Multi-Function Switch C217
 

Measure the resistance between multi-function switch C217-44, circuit 44 (LB), and indicator flasher C214-1, circuit 44 (LB); and between multi-function switch C217-44, circuit 44 (LB), and ground.


Is the resistance less than 5 ohms between the multi-function switch and the indicator flasher, and greater than 10,000 ohms between the multi-function switch and ground?
Yes
GO to L4.

No
REPAIR circuit 44 (LB). TEST the system for normal operation.
L4 CHECK THE MULTI-FUNCTION SWITCH CONTINUITY

Place the multi-function switch in the left turn position.

Measure the resistance between multi-function switch terminal 3 and terminal 44 (component side).


Is the resistance less than 5 ohms?
Yes
REPLACE the indicator flasher. TEST the system for normal operation.

No
REPLACE the multi-function switch. TEST the system for normal operation.