NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > OEM Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

OEM Tech Discussion Forum for OEM (Original Equipment) or stock XJs and MJs.

Reply
 
Thread Tools Display Modes
  #1  
Old February 11th, 2018, 11:35
soyjer soyjer is offline
NAXJA Forum User
 
Join Date: Aug 2017
Location: California
Posts: 40
1999 XJ - when is cruise control light SUPPOSED to light?

1999 stock XJ - just a very basic question:

Is the cruise control light supposed to come on when I simply initially insert the key and then turn the key to "RUN" position (but NOT "START") to test the bulb, along with all of the other bulbs that come on to be tested then?

How about if, immediately after doing the above, I then press the cruise control on/off button...should the cruise control lamp come on then?

How about after the engine is started, but the vehicle is still stationary?

I've read many posts regarding this subject and have checked my vacuum system and brake light switch, horn, etc., but if I knew for a fact that the cruise control bulb is supposed to light while the vehicle is stationary under ANY of the above circumstances, it would make troubleshooting the problem a lot easier, since I could then troubleshoot why the light isn't coming on without having to drive the vehicle over 35 mph to do so.

Thanks
Reply With Quote
  #2  
Old February 11th, 2018, 12:56
ADlBOO ADlBOO is offline
NAXJA Member
 
Join Date: Nov 2009
Location: Jacksonville, FL
Posts: 124
1999 XJ - when is cruise control light SUPPOSED to light?

Just checked on my '98, only time the light came on was with the vehicle started and pushing the button.

Did not come on with the switch to run and pushing the button, or with all the other lamps after engine start.

Sent from my SAMSUNG-SM-G891A using Tapatalk
Reply With Quote
  #3  
Old February 11th, 2018, 15:07
Wayne Sihler's Avatar
Wayne Sihler Wayne Sihler is offline
NAXJA Member
 
Join Date: May 2002
Location: Maurertown,Va.
Posts: 2,586
Re: 1999 XJ - when is cruise control light SUPPOSED to light?

Quote:
Originally Posted by ADlBOO View Post
Just checked on my '98, only time the light came on was with the vehicle started and pushing the button.

Did not come on with the switch to run and pushing the button, or with all the other lamps after engine start.

Sent from my SAMSUNG-SM-G891A using Tapatalk
same as above on my 98
__________________
Wayne
Member#17
NRA Life member, AARP NovaJeepers
96XJ,4.0,AW4,D30/D44,4:10s,Detroit,4.5" lift 33,s
Reply With Quote
  #4  
Old February 11th, 2018, 15:31
soyjer soyjer is offline
NAXJA Forum User
 
Join Date: Aug 2017
Location: California
Posts: 40
Re: 1999 XJ - when is cruise control light SUPPOSED to light?

Quote:
Originally Posted by ADlBOO View Post
Just checked on my '98, only time the light came on was with the vehicle started and pushing the button.

Did not come on with the switch to run and pushing the button, or with all the other lamps after engine start.

Sent from my SAMSUNG-SM-G891A using Tapatalk
Thank you for your answers... Now I know that I probably need to have the engine running when I check for the presence of the PCM supplied cruise control power at the brake switch and at the servo. I haven't found a circuit diagram that contains the cruise control light yet, but it's probably a safe bet that the cruise control light corresponds to when the PCM supplies power through the brake switch to the servo...I guess.
Reply With Quote
  #5  
Old February 11th, 2018, 15:35
Tim_MN's Avatar
Tim_MN Tim_MN is offline
Freakish Hand Strength
 
Join Date: Mar 2003
Location: Minneapolis, MN
Posts: 6,140
Re: 1999 XJ - when is cruise control light SUPPOSED to light?

Have you checked if the bulb is failed ? FYI cruise control switch failure is somewhat common and a logical place to begin diagnostics.
__________________
.
.

Quote:
Originally Posted by bimmerjeeper

I'm starting to realize people on the Jeep forums are highly expert mechanics .....
Reply With Quote
  #6  
Old February 11th, 2018, 16:31
ADlBOO ADlBOO is offline
NAXJA Member
 
Join Date: Nov 2009
Location: Jacksonville, FL
Posts: 124
1999 XJ - when is cruise control light SUPPOSED to light?

My switch is intermittent. Some days works fine, some days I have to get it just right. I would start there before getting too deep in the weeds.

Sent from my SAMSUNG-SM-G891A using Tapatalk
Reply With Quote
  #7  
Old February 11th, 2018, 18:49
Heavyopp Heavyopp is offline
NAXJA Member
 
Join Date: Jan 2017
Location: Middlesex, NJ
Posts: 458
Re: 1999 XJ - when is cruise control light SUPPOSED to light?

I may have a set of switches -- I bought a set on Ebay, where supposed to be for a 2000 but they weren't -- I forget exactly which year they are -- If interested I'll check

I do know the plastic mounting tab is broken on at least one of the switches -- Was a bad deal on ebay, seller didn't want item back
Reply With Quote
  #8  
Old February 13th, 2018, 04:55
soyjer soyjer is offline
NAXJA Forum User
 
Join Date: Aug 2017
Location: California
Posts: 40
Re: 1999 XJ - when is cruise control light SUPPOSED to light?

Quote:
Originally Posted by ADlBOO View Post
My switch is intermittent. Some days works fine, some days I have to get it just right. I would start there before getting too deep in the weeds.

Sent from my SAMSUNG-SM-G891A using Tapatalk
According to wiring diagram 8W - 33 - 2, pressing the speed control switch on/off button connects the following PCM pins directly together electrically, and should therefore cause the voltage between them to drop to 0 volts (presumably from 12 volts):

Pin C32, Connector C3, RD/LG, SPEED CONTROL SWITCH SIGNAL

Pin A4, Connector C1, BR/YL, SENSOR GROUND

Luckily for troubleshooting the on/off switch, the on/off button switch connects these pins DIRECTLY together electrically (the other four speed control button switch circuits have varying resistances in them), and so the voltage measured above should go from full voltage (again, presumably 12 volts) to 0 volts, and not to any intermediate voltage.

Now I just have to figure out if there is any way to gain access to those measuring points.
Reply With Quote
  #9  
Old February 16th, 2018, 20:31
soyjer soyjer is offline
NAXJA Forum User
 
Join Date: Aug 2017
Location: California
Posts: 40
Re: 1999 XJ - when is cruise control light SUPPOSED to light?

Pin C32, Connector C3, RD/LG, SPEED CONTROL SWITCH SIGNAL is actually +5 volts (not +12 volts) with respect to Pin A4, Connector C1, BR/YL, SENSOR GROUND.

I checked all signal paths involved with speed control and brake sensing, and they are all fine, and the brake lamp switch tests OK, and so if the above pins are momentarily connected together with the engine running, then normally the cruise control lamp should come on and the speed control power supply voltage should be provided to the speed control servo through the brake lamp switch, but for some reason my cruise control lamp does not come on, and and the speed control power supply voltage is not provided to the speed control servo through the known good brake lamp switch.

The speed control switches have no continuity through the clockspring, and so I am momentarily shorting the above two pins together using a jumper cable, but I am electrically simulating the use of the speed control on/off switch, and so it doesn't seem as if it should matter HOW the pins are touched together, only that they ARE being touched together, and so I am reluctant to blame the clockspring for this problem. I'm starting to wonder if this PCM is a replacement from an XJ that did not have cruise control? But I've heard of XJ owners adding factory cruise controls to their non-factory cruise control XJ's successfully, so how could they do that if the PCM's on non-factory cruise control XJ's lack the programming necessary to operate the cruise control function?
Reply With Quote
  #10  
Old February 17th, 2018, 06:34
Tim_MN's Avatar
Tim_MN Tim_MN is offline
Freakish Hand Strength
 
Join Date: Mar 2003
Location: Minneapolis, MN
Posts: 6,140
Re: 1999 XJ - when is cruise control light SUPPOSED to light?

Cruise control is plug and play, no matter what options were originally installed, or not installed, at the Jeep factory.
__________________
.
.

Quote:
Originally Posted by bimmerjeeper

I'm starting to realize people on the Jeep forums are highly expert mechanics .....
Reply With Quote
  #11  
Old February 18th, 2018, 10:32
soyjer soyjer is offline
NAXJA Forum User
 
Join Date: Aug 2017
Location: California
Posts: 40
Re: 1999 XJ - when is cruise control light SUPPOSED to light?

Quote:
Originally Posted by Tim_MN View Post
Cruise control is plug and play, no matter what options were originally installed, or not installed, at the Jeep factory.
OK...thanks...that would seem to make sense because people do seem to be able to retrofit factory cruise control without replacing their PCM's.

Which leaves me with a dilemma... All of my wiring and components seem to be in perfect working order (except clockspring, see below) and yet the PCM refuses to supply the "speed control power supply" +5 volts when the above-mentioned on/off pins are momentarily touched together and the engine is running.

I can only think of three things that could be happening:

1. The PCM pin that supplies the speed control power supply is shorted to ground.
...NOPE, 23K ohms on DVM.

2. The PCM itself is working perfectly in absolutely every other way except for the speed control function.
..POSSIBLE, I SUPPOSE.

3. I am misinterpreting the wiring diagram 8W - 33 - 2 as far as how the speed control on/off switch functions. I interpret that wiring diagram as showing that the on/off switch merely momentarily touches those two pins together to turn the speed control on/off (assuming that all other conditions required by the PCM are satisfied).
Is it somehow more complicated than that?

FULL DISCLOSURE: There is no continuity between my speed control on/off switch and those pins...which would indicate that my clock spring needs replacing...but before I replace the clock spring, I was hoping to verify that the cruise control system would at least turn on, sitting still with the engine running, to give me some degree of confidence that the cruise control system may actually work after I replace the clockspring.
the horn works, by the way, and there is no airbag light lit, so those circuits do seem to be making it successfully through the clock spring.

Chrysler calls the way the speed control switches communicate with the PCM "Resistive Multiplexing"...using just two wires and varying resistances to communicate to the PCM which button or buttons are currently being pressed, with the on/off function being ~ zero resistance. It seems relatively simple, unless I am missing something.
Reply With Quote
  #12  
Old February 18th, 2018, 11:11
Tim_MN's Avatar
Tim_MN Tim_MN is offline
Freakish Hand Strength
 
Join Date: Mar 2003
Location: Minneapolis, MN
Posts: 6,140
Re: 1999 XJ - when is cruise control light SUPPOSED to light?

Quote:
Originally Posted by soyjer View Post
... All of my wiring and components seem to be in perfect working order (except clockspring, see below)
The clock springs needs to be fully functional and the steering wheel switches have to be the correct version for your model year. You should bypass the clock spring and the suspect wires with a test wire.

You will need to understand and follow the clock spring safety procedures.




AIRBAG and CLOCK SPRING

SYSTEM OPERATION

The clock spring is mounted on the steering column behind the steering wheel. This assembly consists of a plastic housing which contains a flat, ribbon-like, electrically conductive tape that winds and unwinds with the steering wheel rotation.

The clock spring is used to maintain a continuous electrical circuit between the instrument panel wire harness and the driver side airbag module, the horn switch, and the vehicle speed control switches on vehicles that are so equipped.

The clock spring must be properly centered when it is installed on the steering column following any service removal, or it will be damaged. See the Clock spring Centering procedure for more information.

The clock spring cannot be repaired. If the clock spring is faulty, damaged, or if the airbag has been deployed, the clock spring must be replaced.

WARNING: THE AIRBAG SYSTEM IS A SENSITIVE, COMPLEX ELECTROMECHANICAL UNIT. BEFORE ATTEMPTING TO DIAGNOSE OR SERVICE ANY AIRBAG SYSTEM OR RELATED STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENTS YOU MUST FIRST DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE. THEN WAIT TEN MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE FURTHER SYSTEM SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO DO THIS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

XJ PASSIVE RESTRAINT SYSTEMS

REMOVAL AND INSTALLATION
(1) Turn the steering wheel until the front wheels are in the straight-ahead position before starting the procedure.
(2) Disconnect and isolate the battery negative cable. If the airbag has not been deployed, wait ten minutes for the system capacitor to discharge before further service.
(3) Remove the driver side airbag module as described in this group.
(4) If the vehicle is equipped with the optional vehicle speed control, unplug the speed control switch wire harness connector in the steering wheel.
(5) Remove the nut that secures the steering wheel to the steering column upper shaft.
(6) Remove the steering wheel with a steering wheel puller.
(7) Remove the steering column opening cover.
(8) If the vehicle is so equipped, move the tilt steering column to the fully raised position.

(STEPS 9,10,11 are optional and performed only if required)

(9) Insert the key in the ignition lock cylinder and turn the ignition switch to the On position.
(10) Insert a small screwdriver or pin punch through the access hole in the lower steering column shroud and depress the ignition lock cylinder retaining tumbler (Fig. 13).
(11) While holding the retaining tumbler depressed, pull the ignition lock cylinder and key out of the ignition lock housing.
(12) Remove the three screws that secure the lower steering column shroud to the upper shroud.
(13) If the vehicle is equipped with a standard non-tilt steering column, loosen the two upper steering column mounting nuts. If the vehicle is equipped with the optional tilt steering column, move the tilt steering column to the fully lowered position.
(14) Remove both the upper and lower shrouds from the steering column.
(15) Unplug the two wire harness connectors from the steering column side of the clockspring.
(16) To remove the clockspring, carefully lift the locating fingers of the clockspring assembly from the steering column as necessary. If the clockspring locating fingers are broken, be certain to remove the broken pieces from the upper steering column housing. The clockspring cannot be repaired. It must be replaced if faulty or damaged, or if the airbag has been deployed.
(17) When installing the clockspring, snap the clockspring onto the steering column. If the clockspring is not properly positioned, see Clockspring Centering in this group before installing the steering wheel.
(18) Plug the two clockspring wire harness connectors into the steering column side of the clockspring. Be certain that the wire harness connector latches are fully engaged.
(19) Reinstall the steering column shrouds and ignition lock cylinder.
(20) Reinstall the steering column opening cover as described in Group 8E - Instrument Panel Systems.
(21) The front wheels should still be in the straight-ahead position. Install the steering wheel being certain to fit the flats on the hub of the steering wheel onto the formations on the inside of the clockspring. Pull the wire harness through the lower hole in the steering wheel hub. Tighten the steering wheel nut to 61 Nm (45 ft. lbs.). Be certain not to pinch the wiring between the steering wheel and the nut.
Install the airbag module as described in this group.


ADJUSTMENTS
CLOCKSPRING CENTERING

If the rotating tape within the clockspring is not positioned properly in relation to the steering wheel and the front wheels, the clockspring may fail during use. The clockspring must be centered if it is not known to be properly positioned, or if the front wheels were moved from the straight-ahead position with the clockspring removed during any service procedure.

WARNING: THE AIRBAG SYSTEM IS A SENSITIVE, COMPLEX ELECTROMECHANICAL UNIT. BEFORE ATTEMPTING TO DIAGNOSE OR SERVICE ANY AIRBAG SYSTEM OR RELATED STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENTS YOU MUST FIRST DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE. THEN WAIT TEN MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE FURTHER SYSTEM SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO DO THIS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

(1) Turn the steering wheel until the front wheels are in the straight-ahead position before starting the centering procedure.
(2) Disconnect and isolate the battery negative cable. If the airbag has not been deployed, wait ten minutes for the system capacitor to discharge before further service.
(3) Remove the airbag module as described in this group.
(4) If the vehicle is equipped with the optional vehicle speed control, unplug the speed control switch wire harness connector in the steering wheel.
(5) Remove the nut that secures the steering wheel to the steering column upper shaft.
(6) Remove the steering wheel with a steering wheel puller (Special Tool C-3428B).
(7) Rotate the clockspring rotor clockwise to the end of its travel (Fig. 14). Do not apply excessive torque.
(8) From the end of the clockwise travel, rotate the rotor about two and one-half turns counterclockwise, until the rotor flats are horizontal. If the clockspring wire harness is not at the bottom, rotate another one-half turn.
(9) The front wheels should still be in the straightahead position. Install the steering wheel being certain to fit the flats on the hub of the steering wheel onto the formations on the inside of the clockspring. Pull the wire harness from the clockspring through the lower hole in the steering wheel hub. Tighten the steering wheel nut to 61 Nm (45 ft. lbs.). Be certain not to pinch any of the wiring between the steering wheel and the nut.
(10) Install the airbag module as described in this group.
__________________
.
.

Quote:
Originally Posted by bimmerjeeper

I'm starting to realize people on the Jeep forums are highly expert mechanics .....

Last edited by Tim_MN; March 29th, 2018 at 04:05.
Reply With Quote
  #13  
Old February 18th, 2018, 12:41
soyjer soyjer is offline
NAXJA Forum User
 
Join Date: Aug 2017
Location: California
Posts: 40
Re: 1999 XJ - when is cruise control light SUPPOSED to light?

Quote:
Originally Posted by Tim_MN View Post
Have you checked if the bulb is failed ? FYI cruise control switch failure is somewhat common and a logical place to begin diagnostics.
No..only because without speed control power voltage being supplied by the PCM, there is no way that the cruise control lamp could ever legitimately light up.
Reply With Quote
  #14  
Old February 18th, 2018, 13:04
soyjer soyjer is offline
NAXJA Forum User
 
Join Date: Aug 2017
Location: California
Posts: 40
Re: 1999 XJ - when is cruise control light SUPPOSED to light?

Quote:
Originally Posted by Tim_MN View Post
The clock springs needs to be fully functional. I suppose you could bypass the clock spring and the suspect wires with a test wire You will need to understand and follow the clock spring safety procedures.

Thanks for the clockspring procedure... If I can prove to myself that the cruise control system will actually function with a new clock spring, then I will need that procedure...thanks.

Pins 2 & 3 of connector C1 under the steering column connect directly to the clock spring, then through the clock spring to the speed control switches, and so it would seem that just momentarily shorting them together with the engine running would cause the PCM to provide +5 volt speed control power supply voltage to the system (assuming the brake switch works okay, etc), but in my case the PCM is not supplying that speed control power supply voltage. I'm hoping someone familiar with Chrysler's resistive multiplexing will chime in to confirm that my assumption about these pins and how resistive multiplexing works is correct. If my assumption is correct, that merely touching these pins together under the right conditions should cause the speed control power supply voltage to be provided to the system, then, based on the fact that my system seems to be in perfect working order other than this issue, The logical conclusion would be that my PCM functions perfectly in every other way except that for some reason only the cruise speed control function is not working in the PCM. I checked my PCM model number 56041492AE and it is, indeed, the correct one for a federal 1999 Jeep Cherokee XJ with automatic transmission and 4.0 liter engine.


AIRBAG and CLOCK SPRING

SYSTEM OPERATION

The clock spring is mounted on the steering column behind the steering wheel. This assembly consists of a plastic housing which contains a flat, ribbon-like, electrically conductive tape that winds and unwinds with the steering wheel rotation.

The clock spring is used to maintain a continuous electrical circuit between the instrument panel wire harness and the driver side airbag module, the horn switch, and the vehicle speed control switches on vehicles that are so equipped.

The clock spring must be properly centered when it is installed on the steering column following any service removal, or it will be damaged. See the Clock spring Centering procedure for more information.

The clock spring cannot be repaired. If the clock spring is faulty, damaged, or if the airbag has been deployed, the clock spring must be replaced.

WARNING: THE AIRBAG SYSTEM IS A SENSITIVE, COMPLEX ELECTROMECHANICAL UNIT. BEFORE ATTEMPTING TO DIAGNOSE OR SERVICE ANY AIRBAG SYSTEM OR RELATED STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENTS YOU MUST FIRST DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE. THEN WAIT TEN MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE FURTHER SYSTEM SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO DO THIS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

XJ PASSIVE RESTRAINT SYSTEMS

REMOVAL AND INSTALLATION
(1) Turn the steering wheel until the front wheels are in the straight-ahead position before starting the procedure.
(2) Disconnect and isolate the battery negative cable. If the airbag has not been deployed, wait ten minutes for the system capacitor to discharge before further service.
(3) Remove the driver side airbag module as described in this group.
(4) If the vehicle is equipped with the optional vehicle speed control, unplug the speed control switch wire harness connector in the steering wheel.
(5) Remove the nut that secures the steering wheel to the steering column upper shaft.
(6) Remove the steering wheel with a steering wheel puller.
(7) Remove the steering column opening cover.
(8) If the vehicle is so equipped, move the tilt steering column to the fully raised position.

(STEPS 9,10,11 are optional and performed only if required)

(9) Insert the key in the ignition lock cylinder and turn the ignition switch to the On position.
(10) Insert a small screwdriver or pin punch through the access hole in the lower steering column shroud and depress the ignition lock cylinder retaining tumbler (Fig. 13).
(11) While holding the retaining tumbler depressed, pull the ignition lock cylinder and key out of the ignition lock housing.
(12) Remove the three screws that secure the lower steering column shroud to the upper shroud.
(13) If the vehicle is equipped with a standard non-tilt steering column, loosen the two upper steering column mounting nuts. If the vehicle is equipped with the optional tilt steering column, move the tilt steering column to the fully lowered position.
(14) Remove both the upper and lower shrouds from the steering column.
(15) Unplug the two wire harness connectors from the steering column side of the clockspring.
(16) To remove the clockspring, carefully lift the locating fingers of the clockspring assembly from the steering column as necessary. If the clockspring locating fingers are broken, be certain to remove the broken pieces from the upper steering column housing. The clockspring cannot be repaired. It must be replaced if faulty or damaged, or if the airbag has been deployed.
(17) When installing the clockspring, snap the clockspring onto the steering column. If the clockspring is not properly positioned, see Clockspring Centering in this group before installing the steering wheel.
(18) Plug the two clockspring wire harness connectors into the steering column side of the clockspring. Be certain that the wire harness connector latches are fully engaged.
(19) Reinstall the steering column shrouds and ignition lock cylinder.
(20) Reinstall the steering column opening cover as described in Group 8E - Instrument Panel Systems.
(21) The front wheels should still be in the straight-ahead position. Install the steering wheel being certain to fit the flats on the hub of the steering wheel onto the formations on the inside of the clockspring. Pull the wire harness through the lower hole in the steering wheel hub. Tighten the steering wheel nut to 61 Nm (45 ft. lbs.). Be certain not to pinch the wiring between the steering wheel and the nut.
Install the airbag module as described in this group.


ADJUSTMENTS
CLOCKSPRING CENTERING

If the rotating tape within the clockspring is not positioned properly in relation to the steering wheel and the front wheels, the clockspring may fail during use. The clockspring must be centered if it is not known to be properly positioned, or if the front wheels were moved from the straight-ahead position with the clockspring removed during any service procedure.

WARNING: THE AIRBAG SYSTEM IS A SENSITIVE, COMPLEX ELECTROMECHANICAL UNIT. BEFORE ATTEMPTING TO DIAGNOSE OR SERVICE ANY AIRBAG SYSTEM OR RELATED STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENTS YOU MUST FIRST DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE. THEN WAIT TEN MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE FURTHER SYSTEM SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO DO THIS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

(1) Turn the steering wheel until the front wheels are in the straight-ahead position before starting the centering procedure.
(2) Disconnect and isolate the battery negative cable. If the airbag has not been deployed, wait ten minutes for the system capacitor to discharge before further service.
(3) Remove the airbag module as described in this group.
(4) If the vehicle is equipped with the optional vehicle speed control, unplug the speed control switch wire harness connector in the steering wheel.
(5) Remove the nut that secures the steering wheel to the steering column upper shaft.
(6) Remove the steering wheel with a steering wheel puller (Special Tool C-3428B).
(7) Rotate the clockspring rotor clockwise to the end of its travel (Fig. 14). Do not apply excessive torque.
(8) From the end of the clockwise travel, rotate the rotor about two and one-half turns counterclockwise, until the rotor flats are horizontal. If the clockspring wire harness is not at the bottom, rotate another one-half turn.
(9) The front wheels should still be in the straightahead position. Install the steering wheel being certain to fit the flats on the hub of the steering wheel onto the formations on the inside of the clockspring. Pull the wire harness from the clockspring through the lower hole in the steering wheel hub. Tighten the steering wheel nut to 61 Nm (45 ft. lbs.). Be certain not to pinch any of the wiring between the steering wheel and the nut.
(10) Install the airbag module as described in this group.
Reply With Quote
  #15  
Old February 18th, 2018, 15:36
smccollamjr smccollamjr is offline
NAXJA Forum User
 
Join Date: Jul 2005
Location: WV
Posts: 397
1999 XJ - when is cruise control light SUPPOSED to light?

When I added CC to my 00 TJ I had to add/replace:
- clock spring (mine was non-CC)
- servo
- buttons that were year specific to the year
- wiring harness to connect buttons to clock spring
After all that it was plug and play.


Sent from my iPhone using Tapatalk
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
1999 Classic - Intermittent Cruise Control Issue - Switch? rwmtn80y OEM Tech Discussion 9 June 9th, 2017 13:15
Cruise Control Not Working 1999 Cherokee scott00tj OEM Tech Discussion 22 July 25th, 2014 08:31
Need: cruise control switch & fog light switch mhopton OEM Tech Discussion 12 August 29th, 2010 19:22
1999 XJ OEM fog light help cmsurfer OEM Tech Discussion 22 August 5th, 2007 11:34
Cruise Control light? zfinger OEM Tech Discussion 1 December 19th, 2005 21:56


All times are GMT -7. The time now is 11:30.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014