Manual: How to do Tech 2 Scanner 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

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Insert the GM card

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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

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Exit to continue

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Select the function for self test

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Here, press F2: Automated VCI

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The VCI module self test result

Passed VCI selftest.

Part 2: GM Tech II Keypad self test

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Go to the Tech 2 menu and select F4: Tool options

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Then F3: Self test

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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

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And press key

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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.

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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

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Check the connection before R232 self test

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F4: Tool options

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F3: Self test

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Exit to continue

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F3: Selectable main PCB

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F2: Rs-232 loopback

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Rs232 test: Passed!

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