When hooking up a scan-tool to my girlfriend's daughter's 93 SC2 DOHC, I get a Quad Driver Module 1 Fault. I can clear the code, but it will return next time the engine is started. Most technical literature I have been able to get my hands on identifies a quad driver (there are apparently 2 or 4 of them) as a component internal to the PCM which is used to energize various relays and solenoids in the system The QDM is internal Pcm and contorls various components from check engine light to cooling fan to EGR soenoid and pugre solenoid. If it comes on as soon as you start the car most likely the EVAP purge solenoid is the fault. Rather than guess take it to the dealer spend 40$ and get them to do a QDM test this will tell you which component is failing and save the guess.
the quad driver module is a component of the ECM. you must replace ECM.
the quad driver module is part of your computer, it controls certain parts like your emission system and fuel system that sort of stuff.
If a quad driver has gone bad it is necessary to replace the ECM. After replacing the ECM, drive the car on a bumpy road and note whether the check engine light comes on. If it does, fix the problem or you end up with a repeat QDM failure. == == == == There is no such thing as a quad driver module. There are quad DRIVERS in the ecm.
It is built into the engine control computor.
The quad driver module on a 1995 Saturn SW2 is found in the car's ECU/PCM, which is the cars computer. If there is something wrong with the computer then the reverse lights and windows will not work.
Look at your error codes again. It should read something like "quad driver module FAULT" not failure. It is VERY unlikely that your quad driver actually died. It is the high power control system that is in your computer. So replacing it, means replace the computer. To prevent this the Quad Driver has all sorts of internal protection hardware in its design. The likely thing that is wrong is something the Quad Driver is connected to. And that The quad driver isn't seeing every thing correctly so thus the Fault. It also can fault if there is a wiring problem from the device to the quad driver. There are Test for each component. You should to to find out which is the problem. Consult your Shop Manual.
It is really non fo your consern
Quad drivers are small chips that perform on off functions inside the Engine Control Module. If you have a code which states there is a Quad Drivers Error, you need to check the items that that particular Quad Driver is controlling. For example, the a/c compressor relay, or trans solenoids etc...
I would take it to a repair shop and have them check it out. If indeed the quad driver is defective you will have to replace the computor.
A DTC #26 is a Quad Driver Module Malfunction.
The quad module is in the computer.....Most likely the problem is one of the sensors it controls....Most common is cooling fan relay or motor OR EGR solenoid, or Evap purge solenooid
P1655 refers to the Powertrain Control Module fault (quad driver 2)