FI-28 EFI SYSTEM — Diagnosis System DIAGNOSTIC CODES (Cont'd) Code No. | Number of "CHECK" engine blinks | System | Diagnosis | Trouble area | See page *3-4 | ∩∩∩∩ ∩∩∩∩ FI2619 | Turbocharger Pressure | *4 Turbocharger pressure is abnormal. | • Turbocharger • Air flow meter • Intercooler system • ECU | — *3-5 | ∩∩∩∩∩∩∩∩∩∩ FI2619 | HAC Sensor Signal | Open or short circuit in HAC sensor signal. | • ECU | — 41 | ∩∩∩∩ ∏_ FI1615 | Throttle Position Sensor Signal | Open or short circuit in throttle position sensor signal (VTA). | • Throttle position sensor circuit • Throttle position sensor • ECU | FI-36, 55 42 | _∏∏∏∏∏∏∏∏_ FI1615 | Vehicle Speed Sensor Signal | No "SPD" signal to ECU for 8 seconds when engine speed is above 2,000 (7M-GE), 1,500 (7M-GTE) rpm and coolant temp. is below 80°C (176°F) and neutral start switch is off. | • Vehicle speed sensor circuit • Vehicle speed sensor • ECU | — 43 | _∩∩∩∩∩∩∩_ FI1616 | Starter Signal | No "STA" signal to ECU until engine speed reaches 800 rpm with vehicle not moving. | • Ignition switch circuit • Ignition switch • ECU | FI-42, 62 52 | _∩∩∩∩∩∩∩_ FI1615 | Knock Sensor Signal | Open or short circuit in knock sensor signal. | • Knock sensor circuit • Knock sensor • ECU | — 53 | _∩∩∩∩∩∩∩_ FI1616 | Knock Control Signal to ECU | Knock control program faulty. | • ECU | — *4 71 | ∏∏∏∏∏∏∏∏∏∏ ∏_ FI2022 | EGR System Malfunction | • EGR gas temp. below predetermined level during EGR operation. • Open circuit in EGR gas temp. sensor signal (THG). | • EGR system (EGR valve, EGR hose etc.) • EGR gas temp. sensor circuit • EGR gas temp. sensor • VSV for EGR • VSV for EGR circuit • ECU | FI-48, 69 51 | _∩∩∩∩∩∩∩∩_ FI1617 | Switch Condition Signal | No "IDL" signal, "NSW" signal or "A/C" signal to ECU, during diagnosis check. | • A/C switch circuit • A/C switch • A/C amplifier • Throttle position sensor circuit • Throttle position sensor • ECU | — *1 7M-GTE *2 7M-GE (California vehicles) *3 7M-GE *4 Abnormalities in the air flow meter may also be detected. *5 California vehicles