Section 11-05: Steering Column Switches | 1996 F-150, F-250, F-350, F-Super Duty, F-Super Duty Motorhome and Bronco Workshop Manual |
Ignition Switch Continuity Test
NOTE: For an engine-won't-crank condition with an automatic transmission (7003), determine if the condition exists with the shift control selector level in both PARK and NEUTRAL positions before performing the ignition switch continuity tests. If the no-crank condition occurs in one shift lever position but not the other, a more probable cause is the neutral start switch located in the transmission.
Disconnect ignition key warning switch terminal and wire from the ignition switch (11572). Test the continuity of the ignition switch as described in the following illustrations. Connect a self-powered test lamp or ohmmeter between the blade terminals indicated on the chart. No continuity between any blade and chassis ground should exist in any ignition switch position except the proof Circuit 41 (BK/LB) (Pin P1) and Circuit 512 (T/LG) (Pin P2) in the START position only.
Ignition Switch, F-Series and Bronco
Blade-Type Connector Ignition Switch Continuity Test, F-Super Duty Motorhome
Ignition Switch Mechanical Test
NOTE: Accessories that fail to operate with the key in RUN, or that remain on when the key is turned off, may be the result of a misadjusted ignition switch rather than a malfunctioning ignition switch. Refer to Ignition Switch in the Adjustments portion of this section.
NOTE: Do not apply lubricant to the inside of the ignition switch.
Test the steering column ignition system mechanical operation by rotating the ignition switch lock cylinder (11582) through all positions of the ignition switch. The movement should feel smooth with no sticking or binding. The ignition system should return from the START position back to the ON position without assistance (spring return). If sticking or binding is encountered, check for the following:
Multi-Function Switch Continuity Test
Refer to the diagnostic charts to resolve concerns with the turn signal and windshield wiper switch.
To Test | Connect Self-Powered Test Light or Ohmmeter to Terminals | Move Switch to These Positions | A Good Switch Will Indicate |
---|---|---|---|
Flash-to-Pass | 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 | 15 (R/Y) and 12 (LG/BK) | Lever stalk away from steering wheel | Closed circuit |
Dimmer LO Beam | 15 (R/Y) and 13 (R/BK) | Lever stalk in detent closest to steering wheel | Closed circuit |
Turn Switch Circuit | 44 (LB) and 9 (LG/O) 44 (LB) and 3 (LG/W) | Turn switch to TURN LEFT and hazard switch to OFF | Closed circuit |
Turn Switch Circuit | 44 (LB) and 5 (O/LB) 44 (LB) and 2 (W/LB) | Turn switch to TURN RIGHT and hazard switch to OFF | Closed circuit |
Hazard Switch | 385 (W/R) and 2 (W/LB), 5 (O/LB), 3 (LG/W), 9 (LG/O) | Hazard switch on (button depressed), then released to FULL OUT position) | Closed circuit |
Stoplamp Feed-Through Circuit | 511 (LG) and 9 (LG/O) 511 (LG) and 5 (O/LB) | Turn switch to center (no turn) and hazard switch to OFF | Closed circuit |
Washer Switch Circuit | 590 (DB/W) and 993 (BR/W) | With wiper switch off, push washer switch in; release washer switch | Closed circuit 103.3k ohm |
Wiper Switch Circuit | 589 (O) and 993 (BR/W) | Off Int Lo Hi | 47.6k ohm ± 5% 11.33k ohm ± 5% 4.08k ohm ± 5% 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. (± 10%) |
Lo and Hi | 3.3k ohm 10% |
To Test | Connect Self-Powered Test Light or Ohmmeter to Terminals | Move Switch to These Positions | A Good Switch Will Indicate |
---|---|---|---|
Flash-to-Pass Circuit | 196 (DB/O) and 12 (LG/BK) | Pull and hold lever stalk toward steering wheel | Closed circuit |
Dimmer HI Beam Circuit | 12 (LG/BK) and 15 (R/Y) | 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 |
Turn Switch Circuit | 44 (LB) and 9 (LG/O), 3 (LG/W) | Hazard switch to normal (OFF) and turn switch to TURN LEFT | Closed circuit |
Turn Switch Circuit | 44 (LB) and 5 (O/LB), 2 (LG/O) | Hazard switch to normal (OFF) and turn switch to TURN RIGHT | Closed circuit |
Hazard Switch | 44 (R/LG) and 2 (W/LB), 3 (LG/W), 5 (O/LB), 9 (LG/O) | Hazard switch to hazard (ON) (button pushed in and then released to fully extended position) | Closed circuit |
Stoplamp Feed-Through Circuit | 511 (LG) and 5 (O/LB), 9 (LG/O) | Hazard switch to normal (OFF) and turn switch to neutral | Closed circuit |
Washer Switch Circuit | 590 (DB/W) and 993 (BR/W) | With wiper switch off, push washer switch in; release washer switch | Closed circuit 103.3k ohm |
Wiper Switch Circuit | 589 (O) and 993 (BR/W) | Off Int Lo Hi | 47.6k ohm ± 5% 11.33k ohm ± 5% 4.08k ohm ± 5% 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. (± 10%) |
Lo and Hi | 3.3k ohm ± 10% |