| DTC 12 (Except Calif.) | RPM Signal | ON | N/A | Distributor, Starter Or Circuit, ECM |
| DTC 12 (Calif.) | RPM Signal | ON | N/A | Distributor, Starter Or Circuit, ECM |
| DTC 13 | RPM Signal | (2) | (3) | Distributor Or Circuit, ECM |
| DTC 14 | Ignition Signal | ON | N/A | Ignitor Or Circuit To ECM, ECM |
| DTC 16 (4) | ECT Control Signal | ON | N/A | ECM Or Circuit |
| DTC 21 | Oxygen Sensor Signal | ON | ON | Oxygen Sensor Or Circuit, ECM |
| DTC 22 | Engine Coolant Temperature Sensor Signal | ON | ON | Engine Coolant Temp. Sensor Or Circuit, ECM |
| DTC 24 | Intake Air Temperature | ON | ON | Intake Air Temp. SensorOr Circuit, ECM |
| DTC 25 | Lean Air/Fuel Mixture | ON | ON | Injector Or Circuit, Oxygen Sensor Or Circuit Fuel Pressure, Ignition System, Vacuum Leak, Compression Pressure, ECM |
| DTC 26 | Rich Air/Fuel Mixture | ON | ON | Injector Or Circuit, Oxygen Sensor Or Circuit Fuel Pressure, Ignition System, Vacuum Leak, Compression Pressure, ECM |
| DTC 27 | Sub-Oxygen Sensor Signal | ON | ON | Sub-Oxygen Sensor Or Circuit, ECM |
| DTC 31 | MAP Sensor Signal | ON | ON | MAP Sensor Or Circuit, ECM |
| DTC 41 | Throttle Position Sensor Signal | ON | ON | Throttle Position Sensor Or Circuit, ECM |
| DTC 42 | Vehicle Speed Sensor Signal | ON | OFF | Vehicle Speed Sensor Or Circuit, ECM |
| DTC 43 | Starter Signal | N/A | OFF | Starter Signal Circuit,Starter Relay, IgnitionSwitch Or Circuit, ECM |
| DTC 51 | Switch Condition Signal | N/A | OFF | A/C Switch Circuit, Park/Neutral Switch Or Circuit, TPS Or Circuit, ECM |
| DTC 52 | Knock Sensor Signal | ON | N/A | Knock Sensor Or Circuit, ECM |
| DTC 71 | EGR System Malfunction | ON | ON | EGR System, EGR Temp. Sensor Or Circuit, EGR-VSV, 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 only if no "NE" signal is sent to ECM with engine at approximately 1000 RPM (Calif. models) or 1500 RPM (all others). (3) The MIL will be illuminated only if no "G" signal is sent to ECM at least 4 times with engine speed between 500 and 4000 RPM. Also, on Calif. models, when in Test Mode, 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. |
