Disco 1 rear wiper not working
#1
02-15-2013, 07:39 AM
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Disco 1 rear wiper not working
Hello, 1998 Disco1 rear wiper not working. Pulled motor and tested with probe, seems to be working fine. Checked fuse and is ok. I also checked sprayer with motor connected, sprayer works but wiper doesnt work and neither does the regular rear wiper switch. Could the switch be the culprit? The rear wiper worked before. Any suggestions would be greatly appreciated.
Thank
Thank
Last edited by Rovermancz8; 02-15-2013 at 07:41 AM. Reason: mispelled word
#2
02-16-2013, 10:02 AM
Drifting
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Location: Colorado - at 9000'
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#3
02-16-2013, 02:29 PM
Super Moderator
You also have the multi function unit (MFU) on the back of the fuse block. It controls timing for a lot of small stuff. Here is a test procedure from the RAVE shop manual.
7. The MFU will then exit the diagnostic mode.
1. Close all doors and the tailgate.
NOTE: If the oil pressure switch goes open circuit
(engine is started) during the following procedure,
the MFU will exit the diagnostic mode immediately.
(engine is started) during the following procedure,
the MFU will exit the diagnostic mode immediately.
2. Press and hold the heated rear screen switch
and switch on the ignition.
3. Release the heated rear screen switch within 2
seconds and the MFU will beep to indicate that it’s in
diagnostic mode 1.
4. Press the heated rear screen switch; the MFU
will beep twice. In turn, operate each of the following
switches, heated front screen, rear fog guard lamps,
side lights, headlights, front wiper and rear wiper.
The MFU will beep twice each time a switch is operated.
5. Pressing the heated rear screen again will cause
the MFU to enter diagnostic mode 2.
6. The MFU will provide outputs to the following in
order given below:
and switch on the ignition.
3. Release the heated rear screen switch within 2
seconds and the MFU will beep to indicate that it’s in
diagnostic mode 1.
4. Press the heated rear screen switch; the MFU
will beep twice. In turn, operate each of the following
switches, heated front screen, rear fog guard lamps,
side lights, headlights, front wiper and rear wiper.
The MFU will beep twice each time a switch is operated.
5. Pressing the heated rear screen again will cause
the MFU to enter diagnostic mode 2.
6. The MFU will provide outputs to the following in
order given below:
Heated rear screen relay energised for 2 seconds
Heated front screen energised for 2 seconds
Courtesy lights energised for 2 seconds
Dim dip relay energised for 2 seconds
Rear fog guard lamp energised for 2 seconds
Headlamp power wash energised for half a second
Front wiper energised for half a second
Rear wipe/wash energised for half a second
7. The MFU will then exit the diagnostic mode.
#4
02-16-2013, 09:42 PM
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02-17-2013, 07:48 AM
#6
02-17-2013, 08:09 PM
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#7
02-20-2022, 06:02 AM
Three Wheeling
#9
02-22-2022, 12:13 PM
Three Wheeling
Let for a little moment assume the fall-out of the courtesy lights and the rear wiper not working should be independent totally separated problems.
I have an electrical gauge but I haven’t used it…till now.
What exactly have I to measure on the two conductors of the rear wiper connector (Tension or current, and at what amount.. ) ?
I’m sorry, but I absolutely don’t want to damage any electrical component due to malversation of my gauge !
Greetings,
PierroDisco (from Belgium)
I have an electrical gauge but I haven’t used it…till now.
What exactly have I to measure on the two conductors of the rear wiper connector (Tension or current, and at what amount.. ) ?
I’m sorry, but I absolutely don’t want to damage any electrical component due to malversation of my gauge !
Greetings,
PierroDisco (from Belgium)
Last edited by Pierrodisco; 02-22-2022 at 12:15 PM.
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