jeep grand cherokee 2000

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  #1  
Old 11-22-03, 10:46 PM
otel800
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jeep grand cherokee 2000

my interior overhead display does not work ????? what can problem be???
 
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Old 11-23-03, 07:50 AM
Desi501's Avatar
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Check all your fuses first.
 
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Old 11-23-03, 09:24 AM
otel800
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fuses look good under dash.
 
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Old 11-23-03, 04:44 PM
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Fuse 8 and 22 in the Junction Box control the functions of the Information display. Barring this you may have a bad circuit board.

Here is the diagnostic procedure from Alldata.
2000 Jeep Truck Grand Cherokee 2WD L6-242 4.0L VIN S SFI Copyright 2003, ALLDATA 7.50 Page I
Driver/Vehicle Information Display: Testing and Inspection
Electronic Vehicle Information Center
ELECTRONIC VEHICLE INFORMATION CENTER
If the problem with the Electronic Vehicle Information Center EVIC. is an "Open Circuit" or "Short Circuit" shown in the compass/thermometer display, refer to Ambient Temperature Sensor. If the problem with the EVIC is an inaccurate or scrambled display, refer to Self-Diagnostic Test. If the problem with the EVIC is incorrect Vacuum Fluorescent Display (VFD) dimming levels, use a DRB scan tool and the proper Diagnostic Procedures to test for the correct dimming message inputs being received from the Body Control Module (BCM) over the Programmable Communications Interface (PCI) data bus. If the problem is a no-display condition, use the following procedures.
1. Check the fused B(+) fuse in the junction block. If OK, go to Step 2. If not OK, repair the shorted circuit or component as required and replace the faulty fuse.
2. Check for battery voltage at the fused B(+) fuse in the junction block. If OK, go to Step 3. If not OK, repair the open fused B(+) circuit to the fused B(+) fuse in the PDC as required.
3. Check the fused ignition switch output (run/start) fuse in the junction block. If OK, go to Step 4. If not OK, repair the shorted circuit or component as required and replace the faulty fuse.
4. Turn the ignition switch to the ON position. Check for battery voltage at the fused ignition switch output (run/start) fuse in the junction block. If OK, go to Step 5. If not OK, repair the open fused ignition switch output (run/start) circuit to the ignition switch
as required.
5. Turn the ignition switch to the OFF position. Disconnect and isolate the battery negative cable. Remove the overhead console.
Check for continuity between the ground circuit cavity of the roof wire harness connector for the EVIC module and a good ground.
There should be continuity. If OK, go to Step 6. If not OK, repair the open ground circuit to ground as required.
6. Connect the battery negative cable. Check for battery voltage at the fused B(+) circuit cavity of the roof wire harness connector for the EVIC module. If OK, go to Step 7. If not OK, repair the open fused B(+) circuit to the fused (B+) fuse in the junction block as
required.
7. Turn the ignition switch to the ON position. Check for battery voltage at the fused ignition switch output (run/start) circuit cavity of the roof wire harness connector for the EVIC module. If OK, refer to Self-Diagnostic Test for further diagnosis of the EVIC
module and the PCI data bus. If not OK, repair the open fused ignition switch output (run/start) circuit to the fuse in the junction block as required.
Hope this is helpful to ya,
Billy
 
  #5  
Old 11-23-03, 10:33 PM
mike from nj
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yikes, that's a lot to do, i got lost halfway through that one billy. but, if it was a customer's car, i would be reading just that.

the overhead module is just that, a module. try unplugging it and replugging it, it may come back to life. or try unplugging the battery for a minute and touch the terminals together for a little while, see if it does come back.

if it does, you need a module, it was electronically locked up.
if not, then you need to read and do that entire chart billy was kind enough to provide for you.
 
  #6  
Old 11-24-03, 03:54 AM
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Sorry Mike.... LOL. Just trying to cover all bases.
Billy
 
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