Pretesting Inspection
If FBC system components fail, interruption of fuel supply or failure to supply proper amount of fuel for engine operation will result. The following conditions will result: engine is hard to start or does not start at all, unstable idle and/or poor driveability. Before testing FBC system, perform basic engine checks first (ignition system, incorrect engine adjustments, etc.).
ECI SYSTEM CHECK PROCEDURE CHART
| Check Item | Condition | Normal Voltmeter Reading | ECU Terminal No. |
|---|---|---|---|
| Power Supply | Ignition switch OFF - ON | 11 - 13V | A-7 |
| Distributor AdvanceVacuum Exchange Solenoid Valve | Idling | 13 - 15V | B-7 |
| " | 2,000 RPM | 0 - 1V | A-7 |
| Throttle Position Sensor , | Ignition Switch OFF - ONAccelerator closed | 0-0.6V | A-13 |
| " | Ignition Switch OFF - ONAccelerator wide opened | 4 - 4.5V | A-13 |
| Coolant TemperatureSensor | Ignition switch OFF - ON20°C (68°F) | 2.4 - 2.6V | A-12 |
| " | Ignition switch OFF - ON40°C (104°F) | 1.4 - 1.6V | A-12 |
| " | Ignition switch OFF - ON80°C (176°F) | 0.5 - 0.7V | A-12 |
| Intake Air Temperature Sensor | Ignition switch OFF - ON20°C (68°F) | 2.4 - 2.6V | A-4 |
| " | Ignition switch OFF - ON40°C (104°F) | 1.4 - 1.6V | A-4 |
| " | Ignition switch OFF - ON80°C (176°F) | 0.5 - 0.7V | A-4 |
| Vacuum Switch | Ignition switch OFF - ON | N/A | A-5 |
| " | Idling | N/A | A-5 |
| Idle Up Control Solenoid Valve | Ignition switch OFF - ON | 0 - 0.6V | B-3 |
| Enrichment SolenoidValve | Ignition switch OFF - ON | 11 - 13V | B-54 |
| A/C Cut Relay | Ignition switch OFF - ONA/C Switch OFF - ON | 0 - 0.6V | B-6 |
| Power Supply for Sensor | Ignition switch OFF - ON | 5V | A-3 |
| N/A | N/A | N/A | N/A |
| Secondary Air Control Solenoid Valve | Ignition switch OFF - ONCoolant temperature 30-40°C (86-104°F) | 0-0.6V | B-4 |
| Jet Mixture Solenoid Valve | Ignition switch OFF - ON | 11 - 13V | B-1 |
| " | Idling | N/A | B-1 |
| Idle Up Control Solenoid Valve | Keep 1,500 RPM | 13 - 15V | B-3 |
| Ignition Pulse | Idling | 12 - 15V | A-10 |
| " | 3,000 RPM | 11 - 13V | A-10 |
| Power Supply for Back Up | Idling | 13 - 15V | A-9 |
| Deceleration Solenoid Valve | Idling | 0-0.6V | B-2 |
| Oxygen Sensor | Keep 1,300 RPM after warming up | 0.4-1V Flashing 2.7V | A-1 |
| Enrichment SolenoidValve | N/A | N/A | B-5 |
| A/C Cut Relay | Ignition switch OFF - ONA/C switch OFF - ON at accel. wide opened | 11 - 13V | B-6 |
| Secondary Air Control Solenoid Valve | Keep idling after warming up | 11 - 13V | B-4 |