cruise control doesnt work on my gxl
05-07-05, 07:23 PM
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cruise control doesnt work on my gxl
Well on my 86 gxl i have a cruise control option. I needed a cpu when i bought the car and bought one from mazdamark to see maybe of it would help. But my cruise control still doesnt work and i was wondering if there is something wrong from factory that causes this or what?
I know how to activate it if it was working and all...but im going to make a long trip upstate and would really like it if i had my cruise workin
I know how to activate it if it was working and all...but im going to make a long trip upstate and would really like it if i had my cruise workin
05-07-05, 08:18 PM
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Is the cruise control computer installed? Is the actuator installed? Is the vacuum line to the actuator installed? Is the linkage from the throttle bell crank to the actuator installed? Does the cruise control switch have any lights lighting up when you presss ANY button on it?
Did ya check the fuse?
Did you ohm b/t the switch and the cruise control units electrical plug to see if the buttons on the switch are working?
Did you download the free fsm and read about the cruise control and how it works?
Did ya check the fuse?
Did you ohm b/t the switch and the cruise control units electrical plug to see if the buttons on the switch are working?
Did you download the free fsm and read about the cruise control and how it works?
05-07-05, 09:06 PM
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maybe off topic, but a cruise control would be the least of my attention in a rex...There are so much other thing to maintain, repair and/or replace.
On topic now: well, This seems to be quite common. My TII's cruise control didn't work too. I ended up throwing it away deeeeeeeeeeep inside the garage cuz I didn't know what went wrong, didnt know how to fix it, and I just realised that even when I drive recent car with cruise control I dont use it anyway.
Removal provides:
clears engine bay, simplify TB removal, the most extreme can even call it a weight reduction. lol
Good luck repairing it
l-p
On topic now: well, This seems to be quite common. My TII's cruise control didn't work too. I ended up throwing it away deeeeeeeeeeep inside the garage cuz I didn't know what went wrong, didnt know how to fix it, and I just realised that even when I drive recent car with cruise control I dont use it anyway.
Removal provides:
clears engine bay, simplify TB removal, the most extreme can even call it a weight reduction. lol
Good luck repairing it
l-p
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05-07-05, 10:32 PM
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yea ok my cruise lights come on any eveything but it wont engage...i drove at 60mph too and still nothing...the wires around the actuator looked kinda exposed...like the bronzeish wiring inside so i put some electrical tape around and still no workie
05-07-05, 11:01 PM
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My cruise control worked 7 months ago, but I am driving it again, and now it doesn't. It still gives all the indications that it is working on the switch(lights), but it just doesn't press the pedal anymore. Where is the fsm located? I already have all that iluvmyrx7 had for download, but I think that was just the factory manual. Let me know...lateR
05-08-05, 10:10 AM
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With the key to ON, and the MAIN button pushed in, see if there's battery voltage at the Green/Yellow wire at the control unit.
If it is there, then push the SET button and see if there is a ground on the Green/Orange wire at the control unit when the button is pushed in.
Put the lever to Coast and see if there is a ground on the Blue/Red wire at the control unit when the lever is held to Coast.
Put the lever to Resume and see if there is a gound at the Blue/White wire when the lever is held to Resume.
The last three steps with the plug off the cruise control unit and the key to OFF. There should be a ground on each of those when the appropriate switch is pushed/levered.
With the key to ON and the cruise control plug off, see if there is battery voltage at the BLUE wire on the plug or the Yellow wire. There should not be any on either.
If the above proves out, then go to the actuator and pull its plug off. See if there is battery voltage at the Green/Yellow wire when the key is to ON and the Main button is pushed.
At this point you should have found out which of the above was wrong and the thing should work now. This post plus my first post.
If you can't do the above, then give up or have a shop do it for you. Or learn how to yourself.
If it is there, then push the SET button and see if there is a ground on the Green/Orange wire at the control unit when the button is pushed in.
Put the lever to Coast and see if there is a ground on the Blue/Red wire at the control unit when the lever is held to Coast.
Put the lever to Resume and see if there is a gound at the Blue/White wire when the lever is held to Resume.
The last three steps with the plug off the cruise control unit and the key to OFF. There should be a ground on each of those when the appropriate switch is pushed/levered.
With the key to ON and the cruise control plug off, see if there is battery voltage at the BLUE wire on the plug or the Yellow wire. There should not be any on either.
If the above proves out, then go to the actuator and pull its plug off. See if there is battery voltage at the Green/Yellow wire when the key is to ON and the Main button is pushed.
At this point you should have found out which of the above was wrong and the thing should work now. This post plus my first post.
If you can't do the above, then give up or have a shop do it for you. Or learn how to yourself.
05-07-06, 04:09 PM
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tom port.. AKA streetport
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marked so i can find later.....
gonna go check in car to see if the above info checks out and see why my damn cruise control dont work....
i was trying to install a relay for my reverse switch and i shaved a part of a wire in the harness going to rear of car located by the CPU and such and somthin popped...sounded like the cruise control switch itself....so im gonna go check to see if i fried the computer for the cruise control or the control switch itself...
is this what ill need to do to check that???
MINE IS A S4 BTW...
gonna go check in car to see if the above info checks out and see why my damn cruise control dont work....
i was trying to install a relay for my reverse switch and i shaved a part of a wire in the harness going to rear of car located by the CPU and such and somthin popped...sounded like the cruise control switch itself....so im gonna go check to see if i fried the computer for the cruise control or the control switch itself...
is this what ill need to do to check that???
With the key to ON, and the MAIN button pushed in, see if there's battery voltage at the Green/Yellow wire at the control unit.
If it is there, then push the SET button and see if there is a ground on the Green/Orange wire at the control unit when the button is pushed in.
Put the lever to Coast and see if there is a ground on the Blue/Red wire at the control unit when the lever is held to Coast.
Put the lever to Resume and see if there is a gound at the Blue/White wire when the lever is held to Resume.
The last three steps with the plug off the cruise control unit and the key to OFF. There should be a ground on each of those when the appropriate switch is pushed/levered.
With the key to ON and the cruise control plug off, see if there is battery voltage at the BLUE wire on the plug or the Yellow wire. There should not be any on either.
If the above proves out, then go to the actuator and pull its plug off. See if there is battery voltage at the Green/Yellow wire when the key is to ON and the Main button is pushed.
At this point you should have found out which of the above was wrong and the thing should work now. This post plus my first post.
If you can't do the above, then give up or have a shop do it for you. Or learn how to yourself.
If it is there, then push the SET button and see if there is a ground on the Green/Orange wire at the control unit when the button is pushed in.
Put the lever to Coast and see if there is a ground on the Blue/Red wire at the control unit when the lever is held to Coast.
Put the lever to Resume and see if there is a gound at the Blue/White wire when the lever is held to Resume.
The last three steps with the plug off the cruise control unit and the key to OFF. There should be a ground on each of those when the appropriate switch is pushed/levered.
With the key to ON and the cruise control plug off, see if there is battery voltage at the BLUE wire on the plug or the Yellow wire. There should not be any on either.
If the above proves out, then go to the actuator and pull its plug off. See if there is battery voltage at the Green/Yellow wire when the key is to ON and the Main button is pushed.
At this point you should have found out which of the above was wrong and the thing should work now. This post plus my first post.
If you can't do the above, then give up or have a shop do it for you. Or learn how to yourself.
Last edited by 88rxn/a; 05-07-06 at 04:13 PM.
05-07-06, 05:26 PM
#20
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One thing that will keep a cruise control from engaging is if the clutch switch or brake switch is *closed* when it should not be. That's how you disengage the cruise normally, You step on the brake pedal and the switch makes and puts 12vdc on the cruise control unit causing it to disengage. Same principal with the clutch switch. Just lightly step on it and you put 12c on the cruise control unit and the cruise disengages. Just something to look at.
IF the cruise has NEVER worked for you, it's possible the previous owner installed a series five switch. No worky without jury rigging the wiring to the switch and jamming the button to ON all the time.
If series four, make sure the cable from the cruise control motor is connected to the engine. Make sure the plug is on the cruise control motor. Common sense stuff.
Check and see if 12v is getting to the cruise control motor with the key ON. The green/yellow wire. Cruise Main to ON.
The engaging of a function of the switch is done by flipping the switch to the desired position which in turn puts a GROUND on a select wire to the cruise control unit near your left foot.
IF the cruise has NEVER worked for you, it's possible the previous owner installed a series five switch. No worky without jury rigging the wiring to the switch and jamming the button to ON all the time.
If series four, make sure the cable from the cruise control motor is connected to the engine. Make sure the plug is on the cruise control motor. Common sense stuff.
Check and see if 12v is getting to the cruise control motor with the key ON. The green/yellow wire. Cruise Main to ON.
The engaging of a function of the switch is done by flipping the switch to the desired position which in turn puts a GROUND on a select wire to the cruise control unit near your left foot.
05-07-06, 05:34 PM
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tom port.. AKA streetport
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With the key to ON, and the MAIN button pushed in, see if there's battery voltage at the Green/Yellow wire at the control unit.worked
If it is there, then push the SET button and see if there is a ground on the Green/Orange wire at the control unit when the button is pushed in.worked
Put the lever to Coast and see if there is a ground on the Blue/Red wire at the control unit when the lever is held to Coast.worked
Put the lever to Resume and see if there is a gound at the Blue/White wire when the lever is held to Resume.worked
The last three steps with the plug off the cruise control unit and the key to OFF. There should be a ground on each of those when the appropriate switch is pushed/levered.worked
With the key to ON and the cruise control plug off, see if there is battery voltage at the BLUE wire on the plug or the Yellow wire. There should not be any on either. only voltage was to a black /yellow at plug
If the above proves out, then go to the actuator and pull its plug off. See if there is battery voltage at the Green/Yellow wire when the key is to ON and the Main button is pushed.worked
At this point you should have found out which of the above was wrong and the thing should work now. This post plus my first post.
If it is there, then push the SET button and see if there is a ground on the Green/Orange wire at the control unit when the button is pushed in.worked
Put the lever to Coast and see if there is a ground on the Blue/Red wire at the control unit when the lever is held to Coast.worked
Put the lever to Resume and see if there is a gound at the Blue/White wire when the lever is held to Resume.worked
The last three steps with the plug off the cruise control unit and the key to OFF. There should be a ground on each of those when the appropriate switch is pushed/levered.worked
With the key to ON and the cruise control plug off, see if there is battery voltage at the BLUE wire on the plug or the Yellow wire. There should not be any on either. only voltage was to a black /yellow at plug
If the above proves out, then go to the actuator and pull its plug off. See if there is battery voltage at the Green/Yellow wire when the key is to ON and the Main button is pushed.worked
At this point you should have found out which of the above was wrong and the thing should work now. This post plus my first post.
Last edited by 88rxn/a; 05-07-06 at 05:39 PM.
05-07-06, 05:43 PM
#24
tom port.. AKA streetport
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Originally Posted by HAILERS
You need to use a meter on the wires.
is that what i ground from???
*edit*
all were re-checked using ground on unit's plug...
Last edited by 88rxn/a; 05-07-06 at 05:50 PM.
05-07-06, 08:02 PM
#25
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You put the meters negative lead on a known ground like a chassis bolt or touch the ignition key Housing. Then you pull the plug off the Cruise Control Unit. You put the other meter lead on the GO or green/orange wires socket. Meter on ohms. Now press the SET button on the end of the cruise switch. As you hold that setting the meter should show somewhere around 1ohm give or take some.
Do the same with the other two wires, the LW or blue/white and the blue/red as you hold the switch to Resume and Coast respectively. You should have the same result as you did with the SET switch.
I had a bad Set switch in the Cruise switch once. When you pressed it I had no 1ohm at the GO wire at the cruise unit. See what I mean?
IF those are good, what I would do is go to the YELLOW wire on the Cruise contro unit plug. PUt the meter on vdc. One lead to a good known ground. Now turn the key to ON. There should be NO voltage there. Now with the key to ON, lightly press the brake pedal. Now you should have batt voltage there. Let go and it goes away. Now press the clutch pedal about a inch. You should now have batt voltage again. Let go and it goes away.
Any of that stuff work?
Yes. WEll put the plug back on the cruise control unit and put the cruise switch plug on and any other plug you have off. Now back probe the GREEN/YELLOW wire on the control unit plug with it connected to the unit. With the key to ON, press the MAIN button on the cruise switch. You should have batt voltage on the green./yellow wire.
see if any of that stuff works. Should work as described.
Do the same with the other two wires, the LW or blue/white and the blue/red as you hold the switch to Resume and Coast respectively. You should have the same result as you did with the SET switch.
I had a bad Set switch in the Cruise switch once. When you pressed it I had no 1ohm at the GO wire at the cruise unit. See what I mean?
IF those are good, what I would do is go to the YELLOW wire on the Cruise contro unit plug. PUt the meter on vdc. One lead to a good known ground. Now turn the key to ON. There should be NO voltage there. Now with the key to ON, lightly press the brake pedal. Now you should have batt voltage there. Let go and it goes away. Now press the clutch pedal about a inch. You should now have batt voltage again. Let go and it goes away.
Any of that stuff work?
Yes. WEll put the plug back on the cruise control unit and put the cruise switch plug on and any other plug you have off. Now back probe the GREEN/YELLOW wire on the control unit plug with it connected to the unit. With the key to ON, press the MAIN button on the cruise switch. You should have batt voltage on the green./yellow wire.
see if any of that stuff works. Should work as described.