System - Basic Engine Control System

SYMPTOM

Reference Page

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

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

System Description

Air

Positive Crankcase Ventilation System

3

3

4

4

4

4

4

4

4

4

1

POSITIVE CRANKCASE VENTILATION

Incorrect Idle Speed Adjustment

1

1

1

1

1

INSPECTION 

Electric Throttle Control Actuator

1

1

2

3

3

2

2

2

2

2

2

DTC LOGIC , DIAGNOSIS PROCEDURE , DIAGNOSIS PROCEDURE

Ignition

Incorrect Ignition Timing Adjustment

3

3

1

1

1

1

1

1

INSPECTION 

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

DIAGNOSIS PROCEDURE

Engine Coolant Temperature Sensor Circuit

3

3

3

DTC CONFIRMATION PROCEDURE

Air Fuel Ratio (A/F) Sensor 1 Circuit

DTC LOGIC , DTC LOGIC , DTC LOGIC

Throttle Position Sensor Circuit

2

2

DTC DESCRIPTION , DTC DESCRIPTION , DTC LOGIC , DIAGNOSIS PROCEDURE

Accelerator Pedal Position Sensor Circuit

3

2

1

DTC CONFIRMATION PROCEDURE , DTC DESCRIPTION , DTC LOGIC

Knock Sensor Circuit

2

3

DTC DESCRIPTION

Crankshaft Position Sensor (POS) Circuit

2

2

DTC LOGIC

Camshaft Position Sensor (PHASE) Circuit

3

2

DTC LOGIC

Vehicle Speed Signal Circuit

2

3

3

3

DTC DESCRIPTION (CVT Models), DTC LOGIC (M/T Models)

ECM

2

2

3

3

3

3

3

3

3

3

3

DTC LOGIC , DTC LOGIC , DTC LOGIC , DTC LOGIC , DTC LOGIC , DTC LOGIC , DTC LOGIC

Intake Valve Timing Control Solenoid Valve Circuit

3

2

1

3

2

2

3

3

DTC Logic

Exhaust Valve Timing Control Solenoid Valve Circuit

3

2

1

3

2

2

3

3

DTC LOGIC

Exhaust Valve Timing Control Position Sensor Circuit

3

2

1

3

2

2

3

3

DTC LOGIC

PNP Signal Circuit

3

3

3

3

3

DTC LOGIC

Refrigerant Pressure Sensor Circuit

2

3

3

4

COMPONENT FUNCTION CHECK

Battery Current Sensor Circuit

4

5

5

3

DTC LOGIC , DTC DESCRIPTION , DTC LOGIC , DTC LOGIC

Starter Relay Circuit

3

DTC LOGIC , DTC LOGIC

Starter Control Relay Circuit

3

DTC LOGIC , DTC LOGIC

Electrical Load Signal Circuit

3

COMPONENT FUNCTION CHECK

Intake Manifold Runner Control Valve Motor Circuit

4

4

DTC LOGIC

Intake Manifold Runner Control Valve Position Sensor Circuit

4

4

DTC DESCRIPTION

Intake Manifold Tuning Valve Circuit

1

DTC LOGIC

Air Conditioner Circuit

2

2

3

3

3

3

3

3

3

3

2

WORK FLOW (Auto A/C), WORK FLOW (Manual Air Conditioning)

ABS Actuator And Electric Unit (Control Unit)

4

WORK FLOW