| 12 | RPM Signal | ON | N/A | Distributor, Starter Or Circuit, ECM |
| 13 | RPM Signal | (2) | (3) | Distributor Or Circuit, ECM |
| 14 | Ignition Signal | ON | N/A | Ignitor Or Circuit To ECM, ECM |
| 16 (4) | A/T Control Signal | ON | N/A | ECM |
| 21 | Oxygen Sensor Signal | ON | (5) | Oxygen Sensor/Heater Or Circuit, ECM |
| 22 | Engine Coolant Temperature Sensor Signal | ON | ON | Engine Coolant Temp. Sensor Or Circuit, ECM |
| 24 | Intake Air Temperature Sensor Signal | ON | ON | Intake Air Temp. Sensor Or Circuit, ECM |
| 25 | Lean Air/Fuel Mixture | ON | ON | Injector Or Circuit, Oxygen Sensor/Heater Or Circuit, Fuel Pressure, Ignition System, Compression, Airflow Meter, ECM |
| 26 | Rich Air/Fuel Mixture | ON | ON | Injector Or Circuit, Oxygen Sensor/Heater Or Circuit, Fuel Pressure, Ignition System, Airflow Meter, Compression, ECM |
| 27 (6) | Sub-Oxygen Sensor Signal | ON | (5) | Sub-Oxygen Sensor/ Heater Or Circuit, ECM |
| 28 | Oxygen Sensor Signal | ON | (5) | Oxygen Sensor/Heater Or Circuit, ECM |
| 31 | Airflow Meter Signal | ON | N/A | Airflow Meter Or Circuit, ECM |
| 35 | BARO Sensor | ON | ON | ECM |
| 41 | Throttle Position Sensor Signal | ON | ON | Throttle Position Sensor Or Circuit, ECM |
| 42 | Vehicle Speed Sensor Signal | OFF | OFF | Vehicle Speed Sensor Or Circuit, ECM |
| 43 | Starter Signal | N/A | OFF | Starter Signal Circuit, Starter Relay, Ignition Switch Or Circuit, ECM |
| 51 | Switch Condition Signal | N/A | OFF | A/C Switch Circuit, Park/Neutral Switch Or Circuit, TPS Or Circuit, ECM |
| 52 | Front Knock Sensor Signal | ON | N/A | Front Knock Sensor Or Circuit, ECM |
| 53 | Knock Control Signal | ON | N/A | ECM |
| 55 | Rear Knock Sensor Signal | ON | N/A | Rear Knock Sensor Or Circuit, ECM |
| 71 | EGR System Malfunction | ON | ON | EGR System, EGR Temp. Sensor Or Circuit, EGR-VSV, ECM |
| 78 | Fuel Pump Control Signal | OFF | ON | Fuel Pump ECU Or Circuit, Fuel Pump, ECM Power Source Or ECM |
| (1) ON indicates MIL on instrument panel will be illuminated. N/A indicates item is not included in malfunction diagnosis when using this mode. OFF indicates MIL on instrument panel will not be illuminated even if malfunction is detected. (2) The MIL will be illuminated if no "NE" signal to ECM is received with engine at 1000 RPM or more. (3) The MIL will be illuminated if "NE" signal does not pulse 12 times to ECM during interval between "G1" and "G2" pulses. (4) Applies only to models with electronic-controlled automatic transaxle. (5) The MIL will be illuminated if problem exists in oxygen sensor circuit. The MIL will not be illuminated if problem exists in oxygen sensor heater or circuit. (6) Applies to California models only. |
