LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 1990 >> Cressida >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - EFI >> Notes On Trouble Codes

Notes On Trouble Codes

  1. No other code will appear with code 11.
  2. When the malfunction in the system is repaired, the "CHECK ENGINE" light will go off but, the trouble code will remain in memory until the code is cleared.
  3. If trouble code 51 is still displayed after clearing the ECU memory, check if A/C switch is "OFF" and throttle valve is fully closed. Place gearshift lever in "P" or "N". Clear trouble code again. If code will not clear, recheck switches and circuit.
  4. In test mode, trouble codes will remain in memory even if the cause is repaired, as long as the ignition key is not turned off. This is true for all codes except for codes 43 and 51.
  5. If a malfunction occurs in test mode, the "CHECK ENGINE" light will remain on (all except code 51). ECU will erase all trouble codes when the ignition switch is turned off in test mode.
  6. If a Cressida in test mode is not taken for a test drive, the ECU will set a code 42 and 43.
scientia non olet · About LEMON Manuals