Read Current Data For Engine (Normal Mode)

1. On the << Main Menu >> display screen, select the {Each System Check} and press the [YES] key.
2. On the << System Selection Menu >> display screen, select the {Engine Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of engine type.
4. On the << Engine Diagnosis >> display screen, select the {Current Data Display & Save} and press the [YES] key.
5. On the << Data Display Menu >> display screen, select the {Data Display} and press the [YES] key.
6. Using the scroll key, move the display screen up or down until the desired data is shown.

• A list of the support data is shown in the following table.

Engine Load 

1. Display: 0 - 100% 

The engine load is displayed. The ECM calculates the engine load via the engine speed and signals from the pressure sensor. The engine load increases when the engine speed and absolute pressure of the intake manifold increase.

Coolant Temp. 

1. Display: -40 to 215°C (-40 to 419°F) 

The coolant temperature transmitted from the engine coolant temperature sensor is displayed.

A/F Correction #1, #2 and #3 

1. Display: - 100 to 99% 

Using the signal from the front oxygen (A/F) sensor, the correction value of the fuel supply amount regulated by the ECM is indicated. When the A/F is lean and when displayed value becomes 0 % or more, ECM increases the fuel. When the A/F is rich and when displayed value becomes 0 % or less, ECM decreases the fuel.

A/F Learning #1, #2 and #3 

1. Display: - 100 to 99.2% 

The ECM calculates the long-term fuel trim value from the short-term fuel trim value. The long-term fuel trim value means the correction value of long-term fuel supply amount. If the displayed value is less than 0 %, the fuel system is in rich status and the ECM restricts the fuel supply (by shortening the injector pulse). If the displayed value is more than 0 %, the fuel system is in lean status and the ECM increases the fuel supply (by extending the injector pulse).

Mani Absolute Pressure 

1. Display: 0 - 254.9 kPa (0 - 1,912.5 mmHg, 0 - 75.3 inHg) 

The pressure in the intake manifold is displayed. The ECM detects the pressure in the intake tube via the signal from the pressure sensor. The ECM calculates the air mass required for the engine.

Engine Speed 

1. Display: 0 - 16,383 rpm 

The engine speed transmitted from the crankshaft position sensor is detected.

Vehicle Speed 

1. Display: 0 - 255 km/h (0 - 158 MPH) 

The vehicle speed transmitted from the vehicle speed sensor is displayed.

Ignition Timing 

1. Display: -64 to 63.5 deg. 

The advanced ignition timing value is displayed. The ECM calculates the advanced ignition timing value using engine coolant temperature, engine speed, and engine load.

Intake Air Temp. 

1. Display: 40 - 215°C (104 - 419°F) 

The intake air temperature is displayed. The ECM detects the intake air temperature via the signal from the intake air temperature sensor, and corrects the ignition timing and fuel supply amount.

Rear O2 Sensor 

1. Display: 0 - 327.7 Volt 

The ECM corrects air-fuel ratio by the signal sent from O2 sensor. Also, the signal is used for catalyst degradation diagnosis.

Battery Voltage 

1. Display: 0 - 20.4 V 

The battery voltage is displayed.

Throttle Sensor Voltage 

1. Display: 0 - 5 V 

The throttle angle is displayed in voltage. When the throttle is fully-closed, the displayed voltage value is approx. 0.5 V. When it is fully-open, the voltage is approx. 4 V or more.

Fuel Injection #1 and #2 Pulse 

1. Display: 0 - 65.3 msec (0 - 214.2 ft/sec) 

The injector valve opening time is displayed. The longer the injector valve opening time, the more the fuel is supplied. The higher the engine load, the longer the injector valve opening time becomes.

Knocking Correction 

1. Display: -64 to 63.5 deg. 

The ECM controls the ignition timing via the signal from the knock sensor.

Atmosphere Pressure 

1. Display: 0 - 254.9 kPa (0 - 1,912.5 mmHg, 0 - 75.3 inHg) 

The atmospheric pressure is displayed. The ECM detects the atmospheric pressure via the signal from the atmosphere sensor.

Mani. Relative Pressure 

1. Display: -128 - 128 kPa (-952 - 952 mmHg, -37.5 - 37.5 inHg) 

A value calculated by subtracting the absolute pressure in the intake tube from the atmospheric pressure is displayed. A larger load leads to a larger value.

Fuel Tank Pressure 

1. Display: -3.2 - 3.2 kPa (-24 - 24 mmHg, -0.94 - 0.94 inHg) 

   The pressure in the fuel tank is displayed. 

Fuel Temp. 

1. Display: -40 to 215°C 

The fuel temperature is displayed. The ECM detects the fuel temperature via the signal from the fuel temperature sensor. This signal is used for the evaporation diagnosis.

Front O2 Heater #1, #2 Current 

1. Display: 0 - 25.5 A 

The heater current of the A/F sensor is displayed. A larger current value leads to increased heat generation.

Fuel Level 

1. Display: 0 - 5V 

The float inside the fuel tank is a variable resistor which varies the resistance based on fuel level. The ECM then averages this voltage and the signal voltage from the fuel tank in order to determine fuel level. The scan tool displays close to 0.7 volts for an empty tank, and close to 5 volts for a full tank.

CPC Valve Duty Ratio 

1. Display: 0 - 100% 

The purge control solenoid valve is regulated by the ECM. The displayed value of 0 % indicates that the purge amount is 0, and 100 % indicates that the purge amount becomes the maximum.

A/F sensor #1, #2 

1. Display: 0 - 2 

The air surplus ratio output from the front oxygen (A/F) sensor is displayed. Air overflow ratio = 1.0 is regarded as a stoichiometric A/F ratio. A value above 1.0 indicates A/F lean range, and below 1.0 indicates A/F rich range.

A/F Correction #3 

1. Display: 

The correction value of fuel supply amount regulated by the ECM via the signal from the rear oxygen sensor is displayed.

A/F Sensor #1, #2 Current 

1. Display: -16 - 15.9 mA 

A value of 0 mA is regarded as a stoichiometric A/F ratio. A negative value indicates A/F rich range, and positive value indicates A/F lean range.

A/F Sensor #1, #2 Resistance 

1. Display: 0 - 255 Ω 

The resistance value of the front oxygen (A/F) sensor is displayed. At idle after warm-up, the resistance value shows 27 to 32 ohm.

ISC Valve Duty Ratio 

1. Display: 0 - 127.5% 

The duty value of the idle air control solenoid valve is displayed. This value is regulated by the ECM. The displayed value of 0 % indicates that the air bypass circuit is closed, and 100 % indicates that it is fully-open.

No of EGR Steps 

1. Display: 0 - 255 step 

The number of the EGR valve steps is displayed. The EGR valve is driven by the stepping motor, and the number of steps is regulated by the ECM. A value of 0 steps indicates that the EGR ratio is 0%.

Rear O2 Heater Voltage 

1. Display: 0 - 5.1 V 

The heater voltage value of the rear oxygen sensor is displayed. The heater current duty-controlled by driving range regulates heater temperature.

A/F Heater Current 1, 2 

1. Display: 0 - 25.5 A 

The heater voltage value of the front oxygen (A/F) sensor is displayed. To stabilize the output, the heater current is regulated to keep heater temperature to the specified value.

AT Vehicle ID Signal 

1. Display: ON or OFF 

AT and MT vehicles are identified. For AT vehicles, ON is displayed, and for MT ones, OFF is displayed.

Neutral Position Switch 

1. Display: ON or OFF 

When the shift lever stays in the neutral position, ON is displayed. When in other positions, OFF is displayed.

Idle Switch Signal 

1. Display: ON or OFF 

When the accelerator pedal is released fully, ON displayed. When depressed fully, OFF is displayed.

P/S Switch 

1. Display: ON or OFF 

When the steering wheel is turned fully, ON is displayed. When returned, OFF is displayed. This signal is used for idle control or other controls.

A/C Switch 

1. Display: ON or OFF 

When the A/C switch is turned ON, ON is displayed. When turned OFF, OFF is displayed. This signal is used for idle control or other controls.

Starter Switch 

1. Display: ON or OFF 

When the vehicle is cranking, ON is displayed. When not cranking, OFF is displayed.

Rear O2 Rich Signal 

1. Display: ON or OFF 

When the A/F ratio is rich, ON is displayed. When lean, OFF is displayed.

Knocking Signal 

1. Display: ON or OFF 

When knocking occurs and the ignition timing is tarded, ON is displayed. At any other time, OFF is displayed.

Crankshaft Position Sig. 

1. Display: ON or OFF 

When a crankshaft signal exists, ON is displayed. At any other time (at engine stall), OFF is displayed.

Camshaft Position Sig. 

1. Display: ON or OFF 

When a camshaft signal exists, ON is displayed. At any other time (at engine stall), OFF is displayed.

Rear Defogger SW 

1. Display: ON or OFF 

When the rear defogger switch is turned ON, ON is displayed. When turned OFF, OFF is displayed. This signal is used for idle control or other controls.

Blower Fan SW 

1. Display: ON or OFF 

When the blower fan switch is turned ON, ON is displayed. When turned OFF, OFF is displayed. This signal is used for idle control or other controls.

Light Switch 

1. Display: ON or OFF 

When the light switch is turned ON, ON is displayed. When turned OFF, OFF is displayed. This signal is used for idle control or other controls.

A/C Lock Signal 

1. Display: ON or OFF 

Whether or not the A/C compressor is active is detected. When it is active, ON is displayed. When inactive, OFF is displayed.

A/C Mid Pressure Switch 

1. Display: ON or OFF 

The status of the A/C compressor is detected. When the A/C compressor voltage is high, ON is displayed. When low, OFF is displayed.

A/C Compressor Signal 

1. Display: ON or OFF 

When the A/C clutch is engaged, ON is displayed. When disengaged, OFF is displayed.

Radiator Fan Relay #1, #2, #3 

1. Display: ON or OFF 

When the radiator fan relay is ON (radiator operates), ON is displayed. When OFF (radiator stops), OFF is displayed.

Fuel Pump Relay 

1. Display: ON or OFF 

When the radiator fan relay is ON (fuel pump operates), ON is displayed. When OFF (fuel pump stops), OFF is displayed.

PCV Solenoid Valve 

1. Display: ON or OFF 

The status of the pressure control solenoid valve is displayed. When the pressure control solenoid valve is closed, OFF is displayed. When open, ON is displayed. During an evaporation leak diagnosis, the pressure control solenoid valve is only open when vacuum in the intake tube is taken into the fuel tank.

Vent Solenoid Valve 

1. Display: ON or OFF 

The status of the drain valve is displayed. When the drain valve is closed, ON is displayed. When open, OFF is displayed. Except during an evaporation leak diagnosis, the drain valve is always open.

Torque Control Signal #1, #2 

1. Display: ON or OFF 

When a torque down signal exists, ON is displayed. When it doesn't, OFF is displayed.

Torque Permission Signal 

1. Display: ON or OFF 

The signal which notifies whether or not torque down is possible is displayed. This signal is transmitted from the ECU in response to a torque down signal from the TCU. When torque down is prohibited, ON is displayed. When permitted, OFF is displayed.

Variable Intake Air Sol. 

1. Display: ON or OFF 

The status of the induction control valve is displayed. When the valve is closed for the control to improve low- and mid-speed range, ON is displayed. When open, OFF is displayed.