Section 17-01: Lighting, Exterior
1994 Mustang Workshop Manual
DIAGNOSIS AND TESTING

Component Tests—Turn Signal Lamps/Hazard Flasher Lamps

 

Turn Signal Windshield Wiper Switch

To Test Connect Self-Powered Test Light or Ohmmeter to Terminals Move Switch to These Positions A Good Switch Will Indicate
Turn Switch Circuits 44 (LB) and 9 (LG/O), 3 (LG/W) Hazard Switch to Normal (OFF) and Turn Switch to Turn Left Closed Circuit
  44 (LB) and 5 (O/LB), 2 (W/LB) Hazard Switch to Normal (OFF) and Turn Switch to Turn Right Closed Circuit
Hazard Switch Circuit 385 (W/R) and 9 (LG/O), 5 (O/LB), 2 (W/LB), 3 (LG/W) Hazard Switch On (Button depressed then, released to full out position) Closed Circuit
Stop Lamp Feed Through Circuit 511 (LG) and 9 (LG/O), 5 (O/LB) Hazard Switch to Normal (OFF) and Turn Switch to Neutral Closed Circuit
Flash-to- Pass Circuit 196 (DB/O) and 12 (LG/BK) 15 (R/Y) and 13 (R/BK) Pull and hold Lever Stalk toward Steering Wheel Closed Circuit
Dimmer Hi Beam Circuit 15 (R/Y) and 12 (LG/BK) Lever Stalk in detent away from Steering Wheel Closed Circuit
Dimmer Lo Beam Circuit 15 (R/Y) and 13 (R/BK) Lever Stalk in detent toward Steering Wheel Closed Circuit
Washer Switch Circuit 590 (DB/W) and 993 (BR/W) With Wiper Switch OFF; Push washer switch in Closed Circuit
    Release washer switch 103.3k ohm
Wiper Switch Circuit 589 (O) and 993 (BR/W) OFF
INT
LO
HI
47.6k ohm
11.33k ohm
4.08k ohm
Closed Circuit
Interval Time Adjust 590 (DB/W) and 993 (BR/W) INT and OFF Rotate Control toward OFF; Ohmmeter will show smoothly increasing resistance from 3.3k ohm min. to 103.3k ohm max.
    LO and HI 3.3k ohm