Engine Control System
EXPLANATION OF DIAGNOSTICS1. Including "normal", the ECU is programmed with 18 (Federal and Canada), 19 (California) diagnostic codes.
2. When 2 or more codes are indicated, the lowest number code will appear first.
3. All detected diagnostic codes, except 51, will be retained in memory by the ECU from the time of detection until cancelled out.
4. Once the malfunction is cleared, the "CHECK ENGINE" warning light on the instrument panel will go out but the diagnostic code(s) remain stored in ECU memory (except for code 51).
NOTE: If a malfunction is detected during the diagnostic code check, refer to the circuit indicated in the table. Your readings may vary from the parameters listed in the chart depending on the instruments used.
CODE DESCRIPTIONS Part 1 of 2
Part 2 of 2
REMARKS:
"1: "ON" displayed in the diagnosis mode column indicates that the "CHECK" Engine Warning Light is lighted up when a malfunction is detected. "OFF" indicates that the "CHECK" does not light up during malfunction diagnosis, even if a malfunction is detected.
"2: "0" in the memory column indicates that a diagnostic code is recorded in the ECU memory when a malfunction occurs. "X" indicates that a diagnostic code is not recorded in the ECU memory even if a malfunction occurs. Accordingly, output of diagnostic results is performed with the ignition switch IG SW ON.
"3: The "CHECK" Engine Warning Light comes on if malfunction occurs only for California specifications.
"4: No.12 in the diagnostic contents of codes No.25 and 26 apply to California specification vehicles only, while No. 11 applies to all models.
"5: Code 26.27, 71 is used only for California specifications.
"6: "2 trip detection logic"