ABS light on and no cruise control??
#1
07-10-2006, 08:36 AM
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ABS light on and no cruise control??
I have a 2000 F150 and the ABS light recently came on. I checked the fuse and found it was the same as the cruise control. Sure enough the cruise control does not work either, but the fuse is still good. Could this be the sensor in the rear end of the truck? (As stated in a thread before this one) Thanks in advance...
#2
07-26-2006, 09:47 PM
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ABS/Cruise Control
I believe the PCM will prevent the cruise control module to be engage as long as the ABS concern exist. Same thing with the traction control. it gets disengage when the ABS system has a fault.
https://www.f150online.com/galleries....cfm?gnum=7516
https://www.f150online.com/galleries....cfm?gnum=7516
#3
07-27-2006, 08:39 AM
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The PCM won't disable cruise with an ABS fault.
However, certain vehicles use the ABS sensor as the VSS which is a required input for cruise operation. No VSS input = no cruise control on these vehicles. If your speedometer and odometer work, this is not your issue.
The two systems only share fuses if you have RABS (not 4WABS). If so, CJB fuses F13 and F15 are common.
If fuses are both intact, treat these as separate issues/systems.
First, identify if you have RABS or 4WABS. If RABS, you can pull the fault codes yourself. If 4WABS, you'll need a well equipped scan tool or you can make certain resistance checks of the wheel and differential sensors before blindly replacing anything.
What is the status of your cruise recall? If performed, have you checked the addin fuse link to make certain it hasn't blown?
For the cruise, there is a built-in self-test you can perform. This is coopied straight out of the 2000 F150 service CD.
Advise where the diagnostic fails and I can look it up for the subsequent testing or diagnostic steps.
Steve
However, certain vehicles use the ABS sensor as the VSS which is a required input for cruise operation. No VSS input = no cruise control on these vehicles. If your speedometer and odometer work, this is not your issue.
The two systems only share fuses if you have RABS (not 4WABS). If so, CJB fuses F13 and F15 are common.
If fuses are both intact, treat these as separate issues/systems.
First, identify if you have RABS or 4WABS. If RABS, you can pull the fault codes yourself. If 4WABS, you'll need a well equipped scan tool or you can make certain resistance checks of the wheel and differential sensors before blindly replacing anything.
What is the status of your cruise recall? If performed, have you checked the addin fuse link to make certain it hasn't blown?
For the cruise, there is a built-in self-test you can perform. This is coopied straight out of the 2000 F150 service CD.
Self-Test Diagnostics
WARNING:
This test is a key on engine off (KOEO) test only that is conducted in park only with emergency brake fully engaged.
1. Enter Self-Test Diagnostics by depressing the speed control OFF switch while turning the ignition key ON, making sure the engine does not start and is not running. The speed control indicator on the instrument panel will flash once to indicate that speed control module entered the diagnostic mode. FIVE ADDITIONAL FLASHES AT THIS POINT INDICATE A DEFECTIVE SPEED CONTROL SERVO. Release the OFF switch.
2. Press the remaining switches in this sequence: ON, RESUME, COAST and SET/ACCEL.
IF THE "ON" SWITCH IS NOT DEPRESSED WITHIN FIVE SECONDS AFTER ENTERING THE DIAGNOSTICS MODE, THE MODULE TIMES OUT AND THE PROCEDURE MUST BE STARTED OVER.
The speed control indicator lamp will flash as each switch is depressed. Press each switch in the sequence immediately after the indicator light goes out for the previous switch.
3. A lamp flash with the last button (SET/ACCEL) indicates that the STATIC test passed. If the lamp does not flash with the last button and there are no additional flashes of the lamp, the switch is defective.
If the lamp does not flash with the last button, and additional flashes occur, follow the chart below for trouble codes:
— 2 Flashes - BPP defective, circuit is defective, brake applied, CPP switch or jumper (if equipped).
— 3 Flashes - Deactivator switch is open or circuit defective.
4. Immediately after the STATIC test, the speed control servo does a DYNAMIC test by automatically actuating the throttle lever from 8 mm (0.315 in) to 12 mm (0.472 in) of travel from the idle position. During the DYNAMIC throttle pull, observe throttle movement to witness any binding or sticking of the speed control cable and correct connection of speed control cable to throttle lever. Make sure the THROTTLE RETURNS BACK TO IDLE POSITION.
5. Return ignition switch to the OFF position and proceed to the Symptom Chart.
WARNING:
This test is a key on engine off (KOEO) test only that is conducted in park only with emergency brake fully engaged.
1. Enter Self-Test Diagnostics by depressing the speed control OFF switch while turning the ignition key ON, making sure the engine does not start and is not running. The speed control indicator on the instrument panel will flash once to indicate that speed control module entered the diagnostic mode. FIVE ADDITIONAL FLASHES AT THIS POINT INDICATE A DEFECTIVE SPEED CONTROL SERVO. Release the OFF switch.
2. Press the remaining switches in this sequence: ON, RESUME, COAST and SET/ACCEL.
IF THE "ON" SWITCH IS NOT DEPRESSED WITHIN FIVE SECONDS AFTER ENTERING THE DIAGNOSTICS MODE, THE MODULE TIMES OUT AND THE PROCEDURE MUST BE STARTED OVER.
The speed control indicator lamp will flash as each switch is depressed. Press each switch in the sequence immediately after the indicator light goes out for the previous switch.
3. A lamp flash with the last button (SET/ACCEL) indicates that the STATIC test passed. If the lamp does not flash with the last button and there are no additional flashes of the lamp, the switch is defective.
If the lamp does not flash with the last button, and additional flashes occur, follow the chart below for trouble codes:
— 2 Flashes - BPP defective, circuit is defective, brake applied, CPP switch or jumper (if equipped).
— 3 Flashes - Deactivator switch is open or circuit defective.
4. Immediately after the STATIC test, the speed control servo does a DYNAMIC test by automatically actuating the throttle lever from 8 mm (0.315 in) to 12 mm (0.472 in) of travel from the idle position. During the DYNAMIC throttle pull, observe throttle movement to witness any binding or sticking of the speed control cable and correct connection of speed control cable to throttle lever. Make sure the THROTTLE RETURNS BACK TO IDLE POSITION.
5. Return ignition switch to the OFF position and proceed to the Symptom Chart.
Steve