Reading and Clearing Diagnostic Trouble Codes

Fig. 4 Connecting system checker to control unit check connector.:

1. Start engine and allow to reach normal operating temperature.
2. Connect system checker to control unit check connector, Fig. 4.

Fig. 30 System codes.-----104:

3. Observe system checker. If red light does not illuminate, system is functioning properly. If red light illuminates, a problem has been found in the system Fig 30. Refer to ``Powertrain Management/Computers and Control Systems/Testing and Inspection/Procedures.''