Check it for tune up and vacuum leaks
Trouble codes are retrieved from EEC system through MIL (CHECK ENGINE light) located on instrument panel. MIL is used with Diagnostic Test Connector (DTC). See Fig. 2 . To retrieve codes, use the following procedure:
Turn ignition key to ON position. Disconnect the diagnostic connector, located near starter,in engine compartment.Fig. 2 . Jumper between Blue/White and Grey/Blue terminals as indicated in illustration, and wait 2 seconds.
Remove jumper wire and reconnect diagnostic connector. Record DTC, MIL flashes.
All trouble codes are 2-digit numbers. PCM outputs codes one digit at a time. These codes indicate current faults in system and should be serviced in order of appearance.
Scan tester, if used, will count pulses and display them as a digital code. If using MIL, trouble codes are displayed as light pulses from CHECK ENGINE light. When using MIL, pay attention to length of pauses in order codes correctly. See Fig. 1 .
Code 55 indicates system passes that portion of test. If Code 55 is not retrieved, proceed to CIRCUIT TEST corresponding with trouble code that is output.
To clear codes from PCM memory when using MIL (CHECK ENGINE light), disconnect jumper wire and reconnect harness connectors. If using scan tester, follow tool manufacturer's instructions. If problem has not been corrected or fault is still present, code will immediately be reset in PCM memory.
Wednesday, October 7th, 2009 AT 9:58 PM