Without Scan Tool

HOW TO READ AND ERASE DIAGNOSTIC TROUBLE CODES






Required Special Tool: MB991529: Diagnostic Trouble Code Check Harness

1. Use special tool MB991529 to ground terminal number 1 of the data link connector.
2. Turn the ignition switch "ON."
3. Read the diagnostic trouble codes by counting "N" range light flashes.
4. Refer to the Diagnostic Trouble Codes Chart. Diagnostic Trouble Code Descriptions





5. Erase the diagnostic trouble codes by the following procedure.
1. Turn the ignition switch "OFF."
2. Disconnect the negative battery cable for 10 seconds or more. Reconnect the cable.
3. Turn the ignition switch to "ON." Read the diagnostic trouble code output and check that no diagnostic trouble code is output.
4. Start the engine and let it run until the engine has warmed up. Run it at idle for approximately 10 minutes or longer. The engine control module must build up the adaptive memory for smooth idle and good performance.





UNDERSTANDING THE "N" RANGE LIGHT FLASHES