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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
T190 Lights on but no one home.
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<blockquote data-quote="BackBlade78" data-source="post: 119900" data-attributes="member: 21810"><p>Hi, hopefully someone can help with this error. In the middle of normal activity I had my 2012 T190 shut down unexpectedly and it displayed error M7748 (Key Switch Multiple). All the lights on the display are on EVEN WITH THE KEY IN THE OFF POSITION. I tried disconnecting the battery and letting it rest which did not work, then I unplugged all the main wiring harnesses to check their condition and they were all perfect and then finally I disconnected the keyed ignition and the display turned off. I then plugged the ignition back in, turned the key and it cranked and started. I though great, it's a faulty ignition switch so ordered a new one.</p><p>Today I went to install the new switch however the problem didn't go away. With the new (or old) ignition switch plugged in in the off position, as soon as I connect the battery the display lights up, then beeps and displays M7748. Nothing happens when I turn the key to start it.</p><p>Things I have tried:</p><p>hot wiring from the starter motor</p><p>replacing all the replays</p><p>replacing all the fuses</p><p>checked the square main harness connection between the body and the cabin</p><p>checked all connections behind the display and ignition</p><p>checked the 100A fuse</p><p>checked there is power at the ignition</p><p>checked the connections near the battery (3 x plugs)</p><p>cleaned the terminals and the contact going to the starter</p><p>and finally... walked away defeated <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /></p><p></p><p>Any leads or ideas would be greatly appreciated! Thanks</p></blockquote><p></p>
[QUOTE="BackBlade78, post: 119900, member: 21810"] Hi, hopefully someone can help with this error. In the middle of normal activity I had my 2012 T190 shut down unexpectedly and it displayed error M7748 (Key Switch Multiple). All the lights on the display are on EVEN WITH THE KEY IN THE OFF POSITION. I tried disconnecting the battery and letting it rest which did not work, then I unplugged all the main wiring harnesses to check their condition and they were all perfect and then finally I disconnected the keyed ignition and the display turned off. I then plugged the ignition back in, turned the key and it cranked and started. I though great, it's a faulty ignition switch so ordered a new one. Today I went to install the new switch however the problem didn't go away. With the new (or old) ignition switch plugged in in the off position, as soon as I connect the battery the display lights up, then beeps and displays M7748. Nothing happens when I turn the key to start it. Things I have tried: hot wiring from the starter motor replacing all the replays replacing all the fuses checked the square main harness connection between the body and the cabin checked all connections behind the display and ignition checked the 100A fuse checked there is power at the ignition checked the connections near the battery (3 x plugs) cleaned the terminals and the contact going to the starter and finally... walked away defeated :( Any leads or ideas would be greatly appreciated! Thanks [/QUOTE]
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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
T190 Lights on but no one home.
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