With CONSULT

ON BOARD DIAGNOSIS LOGIC
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the front heated oxygen sensors. The ECM calculates the necessary compensation to correct the offset between the actual and the theoretical ratios. In case the amount of the compensation value is extremely large (The actual mixture ratio is too rich.), the ECM judges the condition as the fuel injection system malfunction and light up the MIL (2 trip detection logic).



DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE

NOTE: If "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch "OFF" and wait at least 5 seconds before conducting the next test.









With CONSULT
(1) Start engine and warm it up to normal operating temperature.
(2) Turn ignition switch "OFF" and wait at least 5 seconds.
(3) Turn ignition switch "ON" and select "SELF-LEARN CONTROL" in "ACTIVE TEST" mode with CONSULT.
(4) Clear the self-learning control coefficient by touching "CLEAR".
(5) Select "DATA MONITOR" mode with CONSULT.
(6) Start engine again and let it idle for at least 10 minutes. The 1st trip DTC P0172, P0175 should be detected at this stage, if a malfunction exists.
(7) If it is difficult to start engine at step 6), the fuel injection system has a malfunction.
(8) Crank engine while depressing accelerator pedal. If engine starts, go to "DIAGNOSTIC PROCEDURE". If engine does not start, remove ignition plugs and check for fouling, etc.


RIGHT BANK




Electrical Diagrams






Circuit Connectors

LEFT BANK




Electrical Diagrams






Circuit Connectors

1 Of 2:

2 Of 2:

DIAGNOSTIC PROCEDURE