speed sensor
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Mountain Pass
Joined: Nov 2004
Posts: 215
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From: nj
speed sensor
i have a 94 f150 4x4 and having problem with the speed sensor i just replaced it with 1 from ford aftermarket one did not work well. so it is still not right computer code says insuff data back to control moduale my guess is i need to look at the wire from the harnass to the sensor and the other ? would be any special wire to use for replacement? thanks in advance to any thoughts on this
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Mountain Pass
Joined: Nov 2004
Posts: 215
Likes: 0
From: nj
what is the speed control module and i forgot to say that the abs lite and brake lite are on with this problem
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Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
The unplug the RABS and the Speed Control Module then one at a time and one at a time and see if the problem goes away.
Speed Control Module:
RABS Module at C-1 in the diagram below:
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Speed Control Module:
RABS Module at C-1 in the diagram below:
/
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no cruise, abs/brake light on.... sounds like the brake light switch to me. Common problem on Mercedes but not for sure on your truck. Step on the brakes and see if your lights come on. if no light swap out the switch
Fleet Owner
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From: Easton,Ks
But on Fords we do not use the term cruise.
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Mountain Pass
Joined: Nov 2004
Posts: 215
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From: nj
ok i disconected the abs controller and the lites on the dash went out the trans shifts nice and the speed control works like it should. so i pulled the code from the abs sys and it is a code 4 rabs valve switch closed so what do i do now?
Fleet Owner
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From: Easton,Ks
Test Code 4, Open/Grounded RABS Valve Reset Circuit
Description
Code 4 is generated by the module's detection of a resistance falling below 18k ohms (short) or above 26k ohms (open) in Circuit 535 (LB/R). This can indicate an open or short in the reset switch circuit, or a hydraulic leak into dump section of the valve.
Possible Contributing Base Brake Component/Vehicle Wiring Concerns
l Terminal backout in the module harness connector at Pin 6
l Terminal backout in the RABS valve harness connector at Pins 2 or 3
l Bulkhead connector (between engine compartment and instrument panel) terminal backout or loose connection
l Module or RABS valve connectors not fully matted with component
l Intermittent open or open circuit in Circuits 535 (LB/R), or 274 (BK/W)
l Intermittent short or short circuit in Circuit 535 (LB/R)
l Defective anti-lock brake control module
Description
Code 4 is generated by the module's detection of a resistance falling below 18k ohms (short) or above 26k ohms (open) in Circuit 535 (LB/R). This can indicate an open or short in the reset switch circuit, or a hydraulic leak into dump section of the valve.
Possible Contributing Base Brake Component/Vehicle Wiring Concerns
l Terminal backout in the module harness connector at Pin 6
l Terminal backout in the RABS valve harness connector at Pins 2 or 3
l Bulkhead connector (between engine compartment and instrument panel) terminal backout or loose connection
l Module or RABS valve connectors not fully matted with component
l Intermittent open or open circuit in Circuits 535 (LB/R), or 274 (BK/W)
l Intermittent short or short circuit in Circuit 535 (LB/R)
l Defective anti-lock brake control module