General Motors Tech2 User Guide
45
Power On Self Test (POST)
Power On Self Tests run automatically each time the power [PWR] button on the Tech2
keypad is pressed on. The screen displays pass or fail results for each area tested. POST
automatically checks the following:
• MC68332 processor
• External RAM (Random Access Memory)
• Flash memory
• Display controller and display
• Sound transducer
• MC68332 RAM
• Real-time clock
• Keypad controller and keypad
• Main UART (Universal Asynchronous Receiver/Transmitter)
Results of POST may include fatal errors that do not allow you to continue, or non-fatal
errors that allow you to continue without full Tech2 operation. If normal Tech2 functions are
stopped or limited, contact Customer Support to determine if service is required.
At completion of POST, the following audible signals indicate a pass or fail condition:
• One beep - No problem. Your Tech2 is operating normally.
• No beep - Sound transducer has failed. Contact Customer Support.
• Three short beeps - Tech2 has failed POST. Contact Customer Support.
In the United States and Canada to contact the ACDelco Aftermarket Support Center, dial
1.888.212.8959.
Tech2 Self Tests
Tech2 self tests verify that the Tech2 is functioning normally. The self tests evaluate all
critical areas of the Tech2 and display pass or fail messages for each subsystem tested.
Self tests isolate user error from system hardware failures. The self tests should be
performed periodically to insure that the Tech2 is operating properly.
The Tech2 must meet the following requirements in order to do a self test:
• Screen display must be fully readable
• Keypad must be operational
Begin the Tech2 self-testing program by following these steps:
1. Press [ENTER] while viewing the Tech2 start-up screen.
2. Select F3: Tool Options from the Tech2 Main Menu.
3. Select F3: Self Test from the Tool Options menu.
Summary of Contents for Tech2
Page 1: ...General Motors Tech2 User Guide 1 GM Tech2 User Guide ...
Page 20: ...General Motors Tech2 User Guide 20 Connection of the power jack to the DLC cable ...
Page 22: ...General Motors Tech2 User Guide 22 ...
Page 24: ...General Motors Tech2 User Guide 24 PCMCIA card keying ...
Page 26: ...General Motors Tech2 User Guide 26 VCI module removal ...
Page 32: ...General Motors Tech2 User Guide 32 Attaching the Tech2 to non OBD II equipped vehicles ...
Page 40: ...General Motors Tech2 User Guide 40 RS 232 cable connections ...
Page 46: ...General Motors Tech2 User Guide 46 Tech2 startup screen ...
Page 47: ...General Motors Tech2 User Guide 47 Tools Options selected on Main Menu ...
Page 52: ...General Motors Tech2 User Guide 52 Test Status ...
Page 53: ...General Motors Tech2 User Guide 53 Test Pass ...
Page 64: ...General Motors Tech2 User Guide 64 Selectable VCI test selected on Tech2 Self Test main menu ...
Page 65: ...General Motors Tech2 User Guide 65 First selectable VCI Self Test screen ...
Page 78: ...General Motors Tech2 User Guide 78 CANdi Diagnostics selected on Tool Options menu ...
Page 86: ...General Motors Tech2 User Guide 86 System Selection Menu ...
Page 97: ...General Motors Tech2 User Guide 97 Tool Controls Menu ...
Page 98: ...General Motors Tech2 User Guide 98 Hardware Menu ...
Page 101: ...General Motors Tech2 User Guide 101 Accept soft key on data screen ...
Page 103: ...General Motors Tech2 User Guide 103 Live Plot Screen with selectable items ...
Page 104: ...General Motors Tech2 User Guide 104 Min Max Adjustment screen ...
Page 106: ...General Motors Tech2 User Guide 106 Live Plot Resume soft key ...
Page 107: ...General Motors Tech2 User Guide 107 Live Plot Data List soft key ...
Page 136: ...General Motors Tech2 User Guide 136 Programming Failed Screen ...
Page 141: ...General Motors Tech2 User Guide 141 Controller Area Network diagnostic interface CANdi module ...