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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

General Tech2 self test

Keypad test

CANdi self test

RS232 self test

RS232 Loopback connector

1. Cut off an eight-pin connector about three inches from the end.
2. Number the pins 1 thru 8 as you like.
3. Splice the pin wire pairs as follows:
   • 1-3
   • 2-7
   • 4-5
   • 6-8

TECH2 Keyboard and RS232 Loopback Self Test;

1. Attach (p/n 3000112) RS232 eight-pin loop back connector to left side port of Tech2.
2. Attach (p/n 3000095) cable to the VCI in the bottom on the TECH2.
3. Attach (p/n 3000109) loop back adapter to the other end of the cable.
4. Connect a 12vdc power source to the TECH2.
5. Press ENTER.
6. Select TOOL OPTIONS.
7. Select TECH 2 Self Test
8. Read the screen and press EXIT.
9. Select Automated Main and VCI.
10. Read the results.