GM Tech 2 self test for CANdi, RS-232, VCI, Keypad

Manual: How to do GM Tech 2 clone scanner self test step-by-step
VCI self test
Keypad self test
CANdi self test
RS-232 self test

Follow the instruction in detail…

Part 1: Tech2 VCI self test
gm-tech2-vci-self-test-1
Insert the GM card
gm-tech2-vci-self-test-2
Connect the adapter and ready for the self test
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Go to the main menu and select F4: Tool options
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F3: Self test
gm-tech2-vci-self-test-5
Exit to continue
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Select the function for self test
gm-tech2-vci-self-test-7
Here, press F2: Automated VCI
gm-tech2-vci-self-test-8
The VCI module self test result
Passed VCI selftest.

Part 2: GM Tech II Keypad self test
gm-tech2-keypad-self-test-1
Go to the Tech 2 menu and select F4: Tool options
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Then F3: Self test
gm-tech2-keypad-self-test-3
Before running the Tech 2 self test:
(1) Candi cannot be connected
(2) Aldl loopback should be connected (GM3000109)
(3) Failure to follow these instructions may invalidate the self test
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F3: Selectable main pcb
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Press Keypad
gm-tech2-keypad-self-test-6
And press key

Note: In the last image, the actual key pressed is F0 and the final result is PASS – that’s normal
When you test the keypad, press F0-F1-F2-F3-F4-F5-F6-F7-F8-F9-EXIT-ENTER-in a good order! DO NOT SKIP ANY ONE.

Part 3: Tech 2 scan tool CANDI module self test

VERY IMPORTANT: Pls make sure of the connection of the OBD adapter, OBD main cable, CANdi module, Tech 2 scan tool and the power supply — ALL should be good

The power should be connected by the OBD port for  CANdi self test.
gm-tech2-candi-self-test-1 gm-tech2-candi-self-test-2 gm-tech2-candi-self-test-3 gm-tech2-candi-self-test-4
F4: Tool options
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F7: CANdi diagnostics
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F0: POST result
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Test status
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F1: Self test
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CANdi self test result
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Pass selftest
There are two test results for CANdi module.
The one is Figure 8, and the other is Figure 10.

Part 4: GM Tech2 scanner RS232 self test
gm-tech2-rs232-self-test-1
Check the connection before R232 self test
gm-tech2-rs232-self-test-2

F4: Tool options
gm-tech2-rs232-self-test-3
F3: Self test
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Exit to continue
gm-tech2-rs232-self-test-5
F3: Selectable main PCB
gm-tech2-rs232-self-test-6

F2: Rs-232 loopback
gm-tech2-rs232-self-test-7
Rs232 test: Passed!

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