System - Basic Engine Control System
| SYMPTOM | Refer to | ||||||||||||||
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| HARD/NO START/RESTART (EXCP. HA) | ENGINE STALL | HESITATION/SURGING/FLAT SPOT | SPARK KNOCK/DETONATION | LACK OF POWER/POOR ACCELERATION | HIGH IDLE/LOW IDLE | ROUGH IDLE/HUNTING | IDLING VIBRATION | SLOW/NO RETURN TO IDLE | OVERHEATS/WATER TEMPERATURE HIGH | EXCESSIVE FUEL CONSUMPTION | EXCESSIVE OIL CONSUMPTION | BATTERY DEAD (UNDER CHARGE) | |||
| Warranty symptom code | AA | AB | AC | AD | AE | AF | AG | AH | AJ | AK | AL | AM | HA | ||
| Fuel | Low pressure fuel pump circuit | 1 | 1 | 2 | 3 | 2 | 2 | 2 | 3 | 2 | COMPONENT FUNCTION CHECK | ||||
| Fuel pressure regulator system | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | WORK PROCEDURE | ||||
| Fuel injector circuit | 1 | 1 | 2 | 3 | 2 | 2 | 2 | 2 | COMPONENT FUNCTION CHECK | ||||||
| Evaporative emission system | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | INSPECTION | ||||
| FRP sensor circuit | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | DTC LOGIC DTC LOGIC |
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| High pressure fuel pump circuit | 4 | 3 | COMPONENT FUNCTION CHECK | ||||||||||||
| Air | Positive crankcase ventilation system | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | INSPECTION | ||
| Incorrect idle speed adjustment | 1 | 1 | 1 | 1 | 1 | WORK PROCEDURE | |||||||||
| Electric throttle control actuator | 1 | 1 | 2 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | DTC LOGIC DTC LOGIC |
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| Ignition | Incorrect ignition timing adjustment | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | WORK PROCEDURE | |||||
| Ignition circuit | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | COMPONENT FUNCTION CHECK | ||||||
| Main power supply and ground circuit | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | DIAGNOSIS PROCEDURE | |||||
| Mass air flow sensor circuit | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | DTC LOGIC | ||||||
| Engine coolant temperature sensor circuit | 3 | 3 | 3 | DTC LOGIC | |||||||||||
| Air fuel ratio (A/F) sensor 1 circuit | DTC LOGIC DTC LOGIC DTC LOGIC DTC LOGIC DTC LOGIC |
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| Throttle position sensor circuit | 2 | 2 | DTC LOGIC DTC LOGIC DTC LOGIC DTC LOGIC DTC LOGIC |
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| Accelerator pedal position sensor circuit | 3 | 2 | 1 | DTC LOGIC DTC LOGIC DTC LOGIC |
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| Knock sensor circuit | 2 | 3 | DTC LOGIC | ||||||||||||
| Engine oil temperature sensor | 4 | 2 | 3 | DTC LOGIC | |||||||||||
| Crankshaft position sensor circuit | 2 | 2 | DTC LOGIC | ||||||||||||
| Camshaft position sensor circuit | 3 | 2 | DTC LOGIC | ||||||||||||
| Vehicle speed signal circuit | 2 | 3 | 3 | 3 | DTC LOGIC | ||||||||||
| Power steering pressure sensor circuit | 2 | 3 | 3 | DTC LOGIC | |||||||||||
| ECM | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | DTC LOGIC DTC LOGIC DESCRIPTION |
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| Intake valve timing control solenoid valve circuit | 3 | 2 | 1 | 3 | 2 | 2 | 3 | 3 | DTC LOGIC | ||||||
| VVEL control module | 3 | 4 | 4 | 3 | DTC LOGIC DTC LOGIC |
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| VVEL actuator motor | 3 | 4 | 4 | 3 | DTC LOGIC | ||||||||||
| VVEL actuator motor relay | 3 | 4 | 4 | 3 | DTC LOGIC | ||||||||||
| VVEL control shaft position sensor | 3 | 4 | 4 | 3 | DTC LOGIC | ||||||||||
| PNP signal circuit | 3 | 3 | 3 | 3 | 3 | DTC LOGIC | |||||||||
| Refrigerant pressure sensor circuit | 2 | 3 | 3 | 4 | COMPONENT FUNCTION CHECK | ||||||||||
| Electrical load signal circuit | 3 | COMPONENT FUNCTION CHECK | |||||||||||||
| Air conditioner circuit | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | DIAGNOSIS CHART BY SYMPTOM | |||
| ABS actuator and electric unit (control unit) | 4 | WORK FLOW | |||||||||||||
| Manifold absolute pressure sensor circuit | 3 | DTC LOGIC | |||||||||||||
| Battery current sensor | 4 | 5 | 5 | 3 | DTC LOGIC DTC LOGIC DTC LOGIC |
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| Heated oxygen sensor 2 | 6 | 6 | 6 | 6 | 5 | DTC LOGIC DTC LOGIC COMPONENT INSPECTION (HO2 SENSOR 2) |
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1 - 6: The numbers refer to the order of inspection.
(continued below)