Handling No Trouble Code Problems

HANDLING NO TROUBLE CODE PROBLEMS

After reading (Description of On-Board Diagnostics), you should have a better understanding of the theory and operation of the on-board diagnostics, and how this relates to the diagnosis of a vehicle that may have a driveability-related symptom or complaint. Refer to Powertrain Management/Computers and Control Systems/Testing and Inspection/Procedures/Diagnostic Charts/No Trouble Code (NTC) Tests/NTC-1A No Trouble Code Test Menu. NTC-1A No Trouble Code Menu - Start Here

DRB ERROR MESSAGES AND BLANK SCREEN

Under normal operation, the DRB will display one of only two error messages:
- User-Requested WARM Boot or User-Requested COLD Boot

If the DRB should display any other error message, record the entire display. This is a sample of such an error message display:

ver: 2.14
date: 26 Jul93
ile: key_itf.cc
date: Jul 26 1993
line: 548
err: 0x1
User-Requested COLD Boot

Press MORE to switch between this display and the application screen.
Press F4 when done noting information.