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Unread 06-26-2013, 09:43 AM   #1
Catfish33
Registered User
1997 TJ Wrangler 
 
Join Date: Feb 2002
Location: Indiana
Posts: 45
1996 ZJ Questions.

I have searched for intermittent wiper problems until my eyes bleed and have come to the conclusion that since my 96' has the digital odometer that my wipers are controlled by the BCM. My question is, I have seen that 97-98 BCM's work on a 96' but not vice-versa, Is this correct? Also my doors lock automatically but after I shut off the truck the doors stay locked from the outside. Any input on this? Could that also be contributed to the BCM? Also my overhead console only shows the DTE and no temp or direction. The STEP button does nothing. Does that mean the button is faulty or the overhead display is shot? Thanks in advance.

__________________
97' TJ 2.5L, 5-speed, 4.10 geared stock Dana 30 front a nd Dana 35 rear, 3.5" home built lift. Waiting to install the 4.5" coils. 33X12.50-15 Trxus M/T's "The Black *****" 65' Kaiser/Jeep Gladiator 230 Tornado OHC 6cyl., 3-speed, 4.27 geared Dana 44 closed knuckle front end and fully locked Dana 53 rear. 36X12.50-16.5 Goodyear Hummer Tires. "Mean Green"
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Unread 06-26-2013, 06:10 PM   #2
ZeeJay1997
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1997 ZJ 
 
Join Date: Dec 2008
Location: right now I'm in, Texas
Posts: 5,716
WINDSHIELD WIPER SYSTEM
An intermittent windshield wiper system is standard
equipment. This system lets the driver select
from either of two wiper speeds, or the intermittent
wipe mode. The intermittent wipe mode is provided
by delay logic and relay control circuitry contained
within the Body Control Module (BCM), and an
intermittent wipe relay.
The intermittent wipe mode delay times are speed
sensitive. Above about sixteen kilometers-per-hour
(ten miles-per-hour) the delay is driver adjustable
from about one-half second to about eighteen seconds.
Below about sixteen kilometers-per-hour (ten
miles-per-hour) the BCM doubles the delay time, or
provides delays of about one second to about thirtysix
seconds.
Models equipped with the optional automatic headlamp
system have a programmable feature in the
BCM that will energize the headlamps automatically,
whenever the windshield wipers are turned on. Refer
to the proper Diagnostic Procedures manual for more
information on enabling or disabling this feature.
The windshield wipers will operate only when the
ignition switch is in the Accessory or On positions. A
circuit breaker located in the junction block protects
the circuitry of the windshield wiper system. Refer to
the owner’s manual for more information on the
windshield wiper system controls and operation.


So I gather from this that you have correctly deduced that the int. wiper goes thru the BCM, but have you swapped the relay?

Sorry i cant answer your question about the BCM

For your overhead display, try this

SELF-DIAGNOSTIC TEST
A self-diagnostic test is used to determine that the
trip computer, compass, thermometer, and all of the
display module segments are operating properly electrically.
Initiate the self-diagnostic test as follows:
(1) With the ignition switch in the Off position,
simultaneously press and hold the Step button and
the U.S./Metric button.
(2) Turn the ignition switch to the On position.
(3) Continue to hold both buttons until the display
module performs a display segment test. In this test,
all of the vacuum fluorescent display segments are
lighted. This test will:
a. Verify that all display segments are functional
b. Check the internal circuitry of the module
c. Check that all of the CCD data bus messages
needed are being received.
(4) Respond to the respective test results as follows.
If all tests are passed, the module will automatically
return to normal operation.
d. In the display segment test, if any segment
should fail to light the unit is faulty and must be
replaced.
e. If the internal circuitry test is failed, the module
will display “FAIL”. If “FAIL” is displayed, the unit is
faulty and must be replaced.
f. If the CCD data bus message test is failed, the
module will display “CCD”. If “CCD” is displayed, the
use of a DRB scan tool and the proper Body Diagnostic
Procedures manual are required for further diagnosis.
(5) Momentarily depress and release either button
one time to exit the self-diagnostic test mode and
return the trip computer, compass, and thermometer
display module to normal operation.

Shutting the engine off should have no effect on the door locks
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Unread 06-26-2013, 06:25 PM   #3
Catfish33
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1997 TJ Wrangler 
 
Join Date: Feb 2002
Location: Indiana
Posts: 45
Yeah I swapped the relay and it did nothing. I may have a source for a used BCM. Should the doors stay locked from the outside when it is put in park or shut off. As far as the overhead console goes I will try your recommendations tomorrow. Just picked up my ZJ Saturday and I will pick up a Haynes manual soon. Should I also get an owners manual or is it worthless if I have the Haynes? Thanks for the response btw.
__________________
97' TJ 2.5L, 5-speed, 4.10 geared stock Dana 30 front a nd Dana 35 rear, 3.5" home built lift. Waiting to install the 4.5" coils. 33X12.50-15 Trxus M/T's "The Black *****" 65' Kaiser/Jeep Gladiator 230 Tornado OHC 6cyl., 3-speed, 4.27 geared Dana 44 closed knuckle front end and fully locked Dana 53 rear. 36X12.50-16.5 Goodyear Hummer Tires. "Mean Green"
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Unread 06-26-2013, 07:06 PM   #4
ZeeJay1997
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1997 ZJ 
 
Join Date: Dec 2008
Location: right now I'm in, Texas
Posts: 5,716
Quote:
Originally Posted by Catfish33 View Post
Should the doors stay locked from the outside when it is put in park or shut off.
To best of my knowledge, yes. If they didnt operate the way you suggest, it would leave the occupants vulnerable to whomever may be on the outside whenever parking. I dont think Mr Mopar would want that.

The outside and inside door locks always operate together when activated with key fob, outside key, inside lock on door panel, or from auto door latch switch.
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