Question about Saab 9 3
Thanks. Hey guys, I've found the root cause of the problem. Yes you're right it has to do with the wiper motor assembly. But I took it apart, but this means drilling out the sort of rivets or posts. I removed the plastic black cover over the gear case, and inside there's a switch, that switch has a brown lead going one side and the other side goes to the ground of the housing via a brass sort of washer, and this brass washer was all corroded. Just clean it until you get to the brass, inside out. You don't need to remove the motor housing. Remove all the grey silicon sealing, replace with a silicon sealing, drill holes (I used a 6/32 drill) through the posts that used to retain the cover, screw the cover back with self tapping screws (I used #8 size, half inch). And you've got a rebuilt motor assembly.
Posted on Jun 13, 2009
Hello I have a saab 9.3 SS 04 and had the same problem.
- intermittent wipe doesn't work, at all
- windscreen washers don't work, at all
- "normal" continuous, and fast wipe work, but the wipers
freeze in the middle of the windscreen if you let go of the
control stalk, rather than sweeping back to the resting position
- same "freeze" happens with the manual wipe (push down on the control stalk)
The weird thing is that, this morning, for about 10 minutes, it seemed to fix itself,
partially - the washers started working etc - but the intermittent wipe still didn't work. However not long after that it went back to the symptoms described above.
also if I unplugged my car battery for a minute the washers worked for several seconds but again same problem occurs.
Solution is to replace your wiper motor. its that "simple"
worked for me. The wiper motor has a lot of electronic stuff and seems to control the washer engine.
the bad part is the the wiper motor costed 235€ for me.
thanks to dvdmw I also solved my problem. BIG THANKS!
Posted on May 05, 2009
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Posted on Jan 02, 2017
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Body control module (BCM)
Wiper 1 relay
Wiper 2 relay
Windshield wiper motor
Windshield washer pump
Windshield washer nozzles
Windshield washer solvent container
Windshield wiper arm and blade assemblies
Windshield wiper transmission
WIPER/SW 10A fuse
WIPER 25A fuse
The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation. The windshield wiper motor park operation is controlled by the BCM. The BCM recieves an input from the park switch to determine wiper blade position. When the wiper blades are at the bottom of the windshield glass in park position the wiper park switch will open and the circuit will be pulled up to B+ by the BCM. The park signal will be pulled to ground by the wiper motor park switch while the wiper blades are not in the park position.
The BCM controls the windshield wiper motor through two output controls, controlling two relays which determine the desired wiper speed, high or low
Diagnostic Trouble Codes (DTCs)
The body control module (BCM) monitors the voltage on the windshield wiper switch signal 2 circuit for diagnostic purposes. If the circuit is shorted to voltage while the driver is commanded OFF, the BCM will store DTC B3715. If the circuit is shorted to ground while the driver is commanded ON, the BCM will store DTC B3715. Refer to DTC B3715.
It would be best to have a factory scan tool to diagnose this problem . it would make it easier anyway .
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