jakesicon

i have the same part.. thought it was my turnsignal problem took part to the jeep dealership turns out to be nothing but a fuse for ur light around ur keyswitch and its suppose to get hot it has 2 12+ runnin to it and 1 ground if u unplug it from its own harness it doesnt do anything but kill the light around ur keyswitch thats all that part does and theres only 1 like it under the dash

yammy

Problem Solved!!!

I have been having the same problem on my 2000 Jeep Cherokee Classic, but mine started with the turn signals only registering a few flashes and then they stopped, on some days. Other days they would work perfect.

Two days ago they completely stopped working. Brought the jeep to Sears and they replaced (on the invoice) the "flasher LP, item number 02811936". The part is a grey plastic cube about 1 in. on all sides, it has five prongs on it, with the back with the top line having 56021551, the next line having TBB89 50732, and the third line reading 3 (6) x 32CP-12V.

Sears charged me $35 for the part and about $40 for labor.

I hope this helps everyone!

AdvanZ33

Was the turn signals your only issue? I went to warm up my 95 this morning and everything started just fine. Turned on the parking lights and tried to turn on the heat but nothing was blowing. Then I noticed my radio was out as well as every switch on my dash. Interior lights turned on, headlights and the hazards worked but nothing else! Any similar stories?

mattden1991

yeah i dont get it my 91 has had the same problem for years so what is the part that needs to be replaced... a relay or swith and where is it located

yammy

Only my turn signals were not working.

repair

Here is how the 2000 system works.... www.Alldatadiy.com .....worth every penny



COMBINATION FLASHER
The combination flasher is a smart relay that functions as both the turn signal system and the hazard warning system flasher. The combination flasher contains active electronic Integrated Circuitry (IC) elements. This flasher is designed to handle the current flow requirements of the factory-installed lighting. If supplemental lighting is added to the turn signal lamp circuits, such as when towing a trailer with lights, the combination flasher will automatically try to compensate to keep the flash rate the same.

While the combination flasher has a International Standards Organization (ISO)-type relay terminal configuration or footprint, the internal circuitry is much different. The combination flasher does not use standard ISO-relay inputs or provide ISO-relay type outputs or functions. The combination flasher should never be substituted for an ISO-relay or replaced with an ISO-relay, or else component and vehicle damage may occur.

Because of the active electronic elements within the combination flasher, it cannot be tested with conventional automotive electrical test equipment. If the combination flasher is believed to be faulty, test the turn signal system and hazard warning system circuits as described. Then replace the combination flasher with a known good unit to confirm system operation.

The combination flasher has five blade-type terminals intended for the following inputs and outputs. fused B(+), fused ignition switch output, ground, turn signal circuit, and hazard warning circuit. Constant battery voltage and ground are supplied to the flasher so that it can perform the hazard warning function, and ignition switched battery voltage is supplied for the turn signal function.

The combination flasher is located in a wire harness connector which is secured to the diagnostics splice block bracket outboard of the steering column opening underneath the instrument panel. The combination flasher cannot be repaired or adjusted and, if faulty or damaged, it must be replaced.


Combination Flasher - Typical


The IC within the combination flasher contains the logic that controls the flasher operation and the flash rate. Pin 6 of the IC receives a sense voltage from the hazard warning circuit of the multi-function switch, When the hazard warning switch is turned on, the "hazard on sense" voltage will become low due to the circuit being grounded through the turn signal bulbs. This low voltage sense signals the IC to energize the flash control Positive-Negative- Positive (PNP) transistor at a pre-calibrated flash rate or frequency. Each time the PNP transistor energizes the hazard warning circuit, the pin 6 "hazard on sense" voltage will become high and the IC signals the PNP transistor to de-energize the circuit. This cycling will continue until the hazard warning switch is turned off.

Likewise, pin 8 of the IC receives a sense voltage from the turn signal circuits of the multi-function switch. When the left or right turn signal switch is turned on, the "turn signal on sense" voltage will become low due to the circuit being grounded through the turn signal bulbs. This low voltage sense signals the IC to energize the flash control PNP transistor at a pre-calibrated flash rate or frequency. Each time the PNP transistor energizes the turn signal circuit, the pin 8 "turn signal on sense" voltage Will become high and the IC signals the PNP transistor to de-energize the circuit. This cycling will continue until the right or left turn signal switch is turned off.

A special design feature of the combination flasher allows it to "sense" that a turn signal circuit or bulb is not operating, and provide the driver an indication of the condition by flashing the remaining bulbs in the affected circuit at a higher rate (120 flashes-per-minute or higher ). Conventional flashers either continue flashing at their typical rate (heavy-duty type), or discontinue flashing the affected circuit entirely (standard-duty type). During turn signal operation, the combination flasher IC compares normal battery voltage input on pin 2 with the shunt resistor voltage input on pin 7. If the IC "senses" that the voltage difference between pin 2 and pin 7 is different than the pre-calibrated value of the IC, it will increase the rate at which it signals the PNP transistor to energize the pin 1 output. Thus, the inoperative half (left or right side) of the turn signal circuit will flash faster.





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mattden1991

so... ill just keep sticking my arm out the window and cutting people off

troutnut

I have a problem with my turn signals not working properly. When I am in drive the hazards will flash when I turn on my signal either way, but in park the signals work fine.

Northwoods Snowman

I'm having this same problem with the few flashes and then they turn off. Normally when a flasher goes out, it just goes out and won't flash, so I suspected the switch on the steering column. I took the switch apart and cleaned all the contacts and greased/reassebled it but I still have the problem occasionally (this has all developed in the last two days). I'll pick up the flasher and see if that doesn't fix it since it took care of the problem for you. They're only $15 at Advance Auto.

Gaz Hilarant

LMAO......me too....

Ronni3

I have a somewhat similar issue in that all my marker lights work and when I turn on either of the marker lights they flash but the left side is the only side that will not remain dim. I've replaced the bulbs and that didn't seem to help and now I'm at a loss as I didn't see a fuse, relay or switch for the left side marker lights in the fuse box under the hood. Will I find this under the panel under the steering column?

Sorry if I am hijacking your thread but thought these were in the same realm.

emmyjbg

I have a 1992 Jeep Cherokee Sport 2 door 2x2; My turn signals, odometer, speedometer, gas gauge, and coolant gauge all do not work. Any suggestions? Is there a good site to look up diagrams? Thanks for any input

freegdr

replace the turn signal flasher if still no turns replace the actuator in the column

NorCalJeep

i now have this problem. The other day i was putting in an aftermarket radio and blew the fuse on the radio. Could i have also messed the turn signals too. Everything else works, except my turn signals(it doesn't even flash when i turn them on). Any advice is helpful

LittleMeanPurpleMachine

I have a turn signal problem too. When I signal left everything works fine and my hazards work fine but when I signal right the right front signal comes on but both signals come on in the back. Could this be caused by the multifunction switch or do I have some wiring issues?