Section 07-14C: Clutch Pedal Position (CPP) Switch | 1996 F-150, F-250, F-350 and Bronco Workshop Manual |
DIAGNOSIS AND TESTING
Pinpoint Test
NOTE: When performing pinpoint tests, use Rotunda 73 Digital Multimeter 105-R0051.
PINPOINT TEST A: ENGINE WILL NOT CRANK
A1 CHECK BATTERY
Is the battery OK?
Yes | No |
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GO to A2. | CHARGE or REPLACE the battery. |
A2 CHECK START SIGNAL TO CLUTCH PEDAL POSITION SWITCH
- Key off.
- Disconnect the clutch pedal position switch connector.
- Key in START position.
- Measure the voltage of Circuit 32 (R/LB) wire at the clutch pedal position switch connector.
Is the voltage greater than 10 volts with the key in the START position?
Yes | No |
---|
GO to A3. | REFER to Section 11-05 to diagnose the ignition switch START position. |
A3 CHECK CLUTCH PEDAL POSITION SWITCH
- Key off.
- Disconnect the clutch pedal position switch connector.
- Measure the resistance between Circuit 306 (T/LB) wire terminal and Circuit 296 (W/P) wire terminal for diesel engines or Circuit 511 (LG) wire terminal for gasoline engines on the starter clutch pedal position switch.
- Depress the clutch pedal.
- Measure the resistance between Circuit 306 (T/LB) wire terminal and Circuit 296 (W/P) wire terminal for diesel engines or Circuit 511 (LG) wire terminal for gasoline engines on the starter clutch pedal position switch.
Is the resistance less than 5 ohms with the clutch pedal depressed and greater than 10,000 ohms with the clutch pedal released?
Yes | No |
---|
GO to A4. | REPLACE the clutch pedal position switch. |
A4 CHECK START SIGNAL TO STARTER MOTOR
- Key off.
- Reconnect the clutch pedal position switch.
- Disconnect the starter motor connector.
- Depress the clutch pedal.
- Key in START position.
- Measure the voltage of the Circuit 33 (W/PK) wire at the starter motor connector.
Is the voltage greater than 10 volts with the key in the START position?
Yes | No |
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REFER to Section 03-06 to diagnose the starter motor. | SERVICE the BK/R wire between the clutch pedal position switch and the starter motor. |