How to self test GM tech2, keypad, CANDI and RS232
These files will step-by-step show you how to execute a self test your Tech2 device
RS232 Loopback connector
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Cut off an eight-pin connector about three inches from the end.
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Number the pins 1 thru 8 as you like.
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Splice the pin wire pairs as follows:
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1-3
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2-7
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4-5
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6-8
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TECH2 Keyboard and RS232 Loopback Self Test;
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Attach (p/n 3000112) RS232 eight-pin loop back connector to left side port of Tech2.
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Attach (p/n 3000095) cable to the VCI in the bottom on the TECH2.
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Attach (p/n 3000109) loop back adapter to the other end of the cable.
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Connect a 12vdc power source to the TECH2.
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Press
ENTER
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Select
TOOL OPTIONS
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Select
TECH 2 Self Test
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Read the screen and press
EXIT
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Select
Automated Main and VCI
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Read the results.