Ford COUGAR 1968 Shop Manual page 644

PART 15-2
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Turn Signals, Emergency Warning Flasher And Horns
15-29
FIG. 2-Sequential
Turn Signal Trouble Diagnosis Guide-External Signals (Continued)
REAR TURN SIGNALS
INOPERATIVE-ONE SIDE,
BOTH SIDES, OR INDIVIDUAL
BULBS (FRONT LIGHTS
FLASH CORRECTLY)
ONLY CENTER LIGHT FLASHES
FOR THE TURN SIGNAL
DIRECTION SELECTED (TURN
INDICATOR LIGHTS GLOW
STEADY)
Verify the complaint. 3. Incorrect operation of the turn
I.
Turn signal filament of bulb signal relay.
burned out.
4. Open circuit between the sequen-
2. Open circuits in rear turn sig- tial flasher assembly anJ the turn sig-
nal wiring between turn signal relay nalrelay.
in luggage compartment and turn sig- 5. Defective sequential flasher
nal bulbs. assembly.
-
Verify the gency warning switch assembly in the
1. Cpen circuit to the coil of the steering column.
emergency relay'
4. Open circuit between the turn
2. Defective emergency warning signal switch wiring assembly and the
relay in the luggage compartment.
emergency warning relay in the lug-
3. Defective turn signal and emer- gage compartment.
FIG. 3-Sequential
Turn Signal Trouble Diagnosis G u i d e
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Instrumental
Panel Bulbs
BOTH INDICATOR BULBS WILL
NOT LIGHT (TURN SIGNAL OR
EMERGENCY FLASHER)
LEFT OR RIGHT INDICATOR
BULB INOPERATIVE
ONE INDICATOR BULB LIGHTS
STEADY, BUT DOES NOT FLASH
BOTH INDICATOR BULBS LIGHT
STEADY, BUT DO NOT FLASH
FIG. 4-Sequential
Turn Signal Trouble Diagnosis G u i d e
-
Emergency
W a r n i n g System
Verify the complaint.
wire between the indicator bulbs and
1. Defective bulbs.
the turn signal relay.
2. Inadequate ground at the turn 4. Defective turn signal indicator
signal relay.
relay under the instrument panel.
3. Open circuit in the ground
Verify the complaint. the bulb and the two terminal con-
I. Defective bulb. nectors.
2. Inadequate ground a t the bulb 4. Open feed circuit from the
socket. turn signal switch.
3. Open ground circuit between
Verify the complaint. 2. Short to ground of the indi-
1.
Defective outside turn signal cator bulb or ground wire.
bulb or bulbs in the system.
verify
the complaint,
tor relay under the instrument panel
1. Defective outside turn signal (3terminal).
bulb or bulbs. 3. Short to ground of the indi-
2. Defective turn signal indica- cator bulb or ground wire(s).
EMERGENCY WARNING
SYSTEM IS INOPERATIVE
Verify the complaint.
and wiring assembly in the steering
I. Defective 15-ampere circuit column.
breaker. 3. Defective emergency warning
2. Open feed circuit between the switch (part of turn signal switch on
circuit breaker and turn signal switch
the steering column).