wiper problem - JeepForum.com
 
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post #1 of 3 Old 03-31-2014, 09:17 AM Thread Starter
Camd94224
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1989 CJ7 
 
Join Date: Dec 2012
Location: Nantucket
Posts: 156
wiper problem

so today my girlfriend went to her 96 zj 5.2 (my old one) turned the key on and the wipers started to come on, now the wipers are in the off position and still acting like the are on the low setting. turn switch to the delay position and they stay on low, turn it to the high position they go to high, back to the low position they go back to low, go back to the delay and they stay on low, turn them off they stay on low. i don't know what todo. so i pull the wiper fuse under the hood closest to the battery and it fixes the problem, now the only thing is that she doesn't have intermittent which i could care less about. all the other positions work like low and high. it just doesn't go back into the park position like they would if they are working fine and you shut it off, so where she shuts it off at is where they stay.. iv been reading that the intermittent wiper control module could be at fault. but since its a 96 they do not have a separate wiper control module from the bcm, is there any way i could test the bcm, and the multifunction switch has been replaced and the motor and the relay.. so the last thing to look at is the body control module. tell me that you guys think


1979 cj7 4.2, weber, 3 speed, 31x10.5r15
1977 cj5 4.2, weber fiberglass tub parts jeep
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post #2 of 3 Old 03-31-2014, 06:36 PM
ZeeJay1997
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1997 ZJ 
 
Join Date: Dec 2008
Posts: 8,580
here is how to check it with a meter. you will have to correlate the info into the diagnostics procedure to the wiring diagram. the diagram is not labeled for the diagnostics procedure (go figure)


RELAY CIRCUIT TEST
(1) The relay common feed terminal cavity (30) is
connected to the wiper (multi-function) switch. There
should be continuity between the cavity for relay terminal
30 and the two fused ignition switch output
(V6) circuit cavities of the multi-function switch connector
at all times. If OK, go to Step 2. If not OK,
repair the open circuit(s) to the multi-function switch
as required.
(2) The relay normally closed terminal (87A) is
connected to terminal 30 in the de-energized position.
There should be continuity between the cavity for
relay terminal 87A and the wiper park switch sense
circuit cavities of the wiper motor wire harness connector
and the white 24-way Body Control Module
(BCM) wire harness connector at all times. If OK, go
to Step 3. If not OK, repair the open circuit(s) to the
wiper motor and BCM as required.
(3) The relay normally open terminal (87) is connected
to the common feed terminal (30) in the energized
position. There should be battery voltage at the
cavity for relay terminal 87 with the ignition switch
in the On or Accessory positions. If OK, go to Step 4.
If not OK, repair the open circuit to the ignition
switch as required.
(4) The coil battery terminal (86) is connected to
the electromagnet in the relay. There should be battery
voltage at the cavity for relay terminal 86 with
the ignition switch in the On or Accessory positions.
If OK, go to Step 5. If not OK, repair the open circuit
to the ignition switch as required.
(5) The coil ground terminal (85) is connected to
the electromagnet in the relay. It is grounded by the
BCM to energize the relay and cycle the wiper motor.
Check for continuity between the cavity for relay terminal
85 and the intermittent wiper relay control circuit
cavity of the white 24-way BCM wire harness
connector. There should be continuity. If OK, refer to
the proper Body Diagnostic Procedures manual for
diagnosis of the BCM. If not OK, repair the open circuit
to the BCM as required.
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post #3 of 3 Old 04-02-2014, 07:26 AM Thread Starter
Camd94224
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1989 CJ7 
 
Join Date: Dec 2012
Location: Nantucket
Posts: 156
yeah so its either the bcm telling the relay to work or there is a short to power somewhere acting like the bcm.

1979 cj7 4.2, weber, 3 speed, 31x10.5r15
1977 cj5 4.2, weber fiberglass tub parts jeep
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