Scan Tool Data
Scan Tool DataNOTE: For identification of each cylinder and bank, refer to Precaution for Identification of Cylinder and Bank.
ECM
As the data values are standard values estimated on the basis of values obtained from the normally operating vehicles using a scan tool, use them as reference values. Even when the vehicle is in good condition, there may be cases where the checked value does not fall within each specified data range. Therefore, judgment as abnormal should not be made by checking with these data alone.
Also, conditions that can be checked by the scan tool are those detected by ECM and output from ECM as commands and there may be cases where the engine or actuator is not operating (in the condition) as indicated by the scan tool.
NOTE:
- With the generic scan tool, only star (*) marked data in the following table can be read.
- When checking the data with the engine running at idle or racing, be sure to shift the gear shift lever to the neutral gear position (M/T model) or the select lever to the "Park" range (A/T model) and pull the parking brake fully. Also, if nothing or "no load" is indicated, turn OFF A/C, all electric loads, P/S and all the other necessary switches.
Scan Tool Data Definitions
Fuel System B1 (Fuel System Status Bank 1)
Air/fuel of bank 1 ratio feedback loop status displayed as one of the followings.
OL: Open-loop has not yet satisfied engine conditions (ECT > 10 °C (50 °F), IAT, TP, oxygen sensor/system = OK) to go closed loop.
CL: Closed-loop using oxygen sensor(s) as feedback for fuel control.
OL-DRIVE: Open-loop due to driving conditions (Power enrichment, etc.).
OL-FAULT: Open-loop due to detected system fault.
Fuel System B2 (Fuel System Status Bank 2)
Air/fuel ratio of bank 2 feedback loop status displayed as one of the followings.
OL: Open-loop has not yet satisfied engine conditions (ECT > 10 °C (50 °F), IAT, TP, oxygen sensor /system = OK) to go closed loop.
CL: Closed-loop using oxygen sensor(s) as feedback for fuel control.
OL-DRIVE: Open-loop due to driving conditions (Power enrichment, etc.).
OL-FAULT: Open-loop due to detected system fault.
Short Term Fuel Trim B1 (Short Term Fuel Trim Bank 1, %)
Short term fuel trim value of bank 1 represents short term corrections of bank 1 to the air/fuel mixture computation. A value of 0 indicates no correction, a value greater than 0 means an enrichment correction, and a value less than 0 implies an enleanment correction.
Long Term Fuel Trim B1 (Long Term Fuel Trim Bank 2, %)
Long term fuel trim value of bank 1 represents long term corrections of bank 1 to the air/fuel mixture computation. A value of 0 indicates no correction, a value greater than 0 means an enrichment correction, and a value less than 0 implies an enleanment correction.
Short Term Fuel Trim B2 (Short Term Fuel Trim Bank 2, %)
Short term fuel trim value of bank 2 represents short term corrections of bank 2 to the air/fuel mixture computation.
A value of 0 indicates no correction, a value greater than 0 means an enrichment correction, and a value less than 0 implies an enleanment correction.
Long Term Fuel Trim B2 (Long Term Fuel Trim Bank 2, %)
Long term fuel trim value of bank 2 represents long term corrections of bank 2 to the air/fuel mixture computation.
A value of 0 indicates no correction, a value greater than 0 means an enrichment correction, and a value less than 0 implies an enleanment correction.
Total Fuel Trim B1 (Total Fuel Trim Bank 1, %)
The value of Total Fuel Trim of bank 1 is obtained by calculation based on values of Short Term Fuel Trim of bank 1 and Long Term Fuel Trim of bank 1. This value indicates how much correction is necessary to keep the air/fuel mixture stoichiometrical.
Total Fuel Trim B2 (Total Fuel Trim Bank 2, %)
The value of Total Fuel Trim of bank 2 is obtained by calculation based on values of Short Term Fuel Trim of bank 2 and Long Term Fuel Trim of bank 2. This value indicates how much correction is necessary to keep the air/fuel mixture stoichiometrical.
Inj pulse width Cy1 (Fuel Injection Pulse Width Cylinder No.1, msec.)
This parameter indicates time of the injector drive (valve opening) pulse which is output from ECM.
Inj Pulse Width Cy 2 (Fuel Injection Pulse Width Cylinder No.2, msec.)
This parameter indicates time of the injector drive (valve opening) pulse which is output from ECM.
Inj Pulse Width Cy 3 (Fuel Injection Pulse Width Cylinder No.3, msec.)
This parameter indicates time of the injector drive (valve opening) pulse which is output from ECM.
Inj Pulse Width Cy 4 (Fuel Injection Pulse Width Cylinder No.4, msec.)
This parameter indicates time of the injector drive (valve opening) pulse which is output from ECM.
Inj Pulse Width Cy 5 (Fuel Injection Pulse Width Cylinder No.5, msec.)
This parameter indicates time of the injector drive (valve opening) pulse which is output from ECM.
Inj Pulse Width Cy 6 (Fuel Injection Pulse Width Cylinder No.6, msec.)
This parameter indicates time of the injector drive (valve opening) pulse which is output from ECM.
Ignition Advance (Ignition Timing Advance For No.1 Cylinder, °BTDC)
Ignition timing of No.1 cylinder is commanded by ECM. The actual ignition timing should be checked using scan tool.
Calculated Load (Calculated Load Value, %)
This parameter indicates calculated engine load in percent based on inputs to the control module from various engine sensors.
Engine Speed (rpm)
It is computed by reference pulses from the crankshaft position sensor.
Desired Idle (Desired Idle Speed, rpm)
The desired idle speed is an ECM internal parameter which indicates the ECM requested idle. If the engine is not running, this number is not valid.
MAF (Mass Air Flow Rate, g/s, lb/min.)
It represents total mass of air entering intake manifold which is measured by MAF sensor.
vehicle'speed (km/h, mph)
It is computed based on pulse signals from rear wheel speed sensors.
ECT (Engine Coolant Temperature, °C, °F)
It is detected by engine coolant temperature sensor.
ECT at Engine Start (Engine Coolant Temperature at Engine Start, °C, °F)
This parameter indicates engine coolant temperature when engine started. It is detected by engine coolant temperature sensor.
Intake Air Temp. (Intake Air Temperature, °C, °F)
It is detected by intake air temperature sensor.
IAT at Engine Start (Intake Air Temperature at Engine Start, °C, °F)
This parameter indicates intake air temperature when engine started. It is detected by intake air temperature sensor.
Barometric Press (Barometric Pressure, kPa, mmHg, inHg, psi, in H20)
This parameter represents a measurement of barometric air pressure and is used for altitude correction of the fuel injection quantity.
EVAP Canister Prg Duty (EVAP Canister Purge Flow Duty, %)
This parameter indicates valve ON (valve open) time rate within a certain set cycle of EVAP canister purge valve which controls the amount of EVAP purge.
VVT Gap B1 EX (Variable Valve Timing Difference between Target and Actual Position (Bank 1 / exhaust Side), °)
This parameter indicates value of difference between target camshaft position (bank 1 / exhaust side) and actual camshaft position (bank 1 / exhaust side).
VVT Gap B1 IN (Variable Valve Timing Difference between Target and Actual Position (Bank 1 / intake Side), °)
This parameter indicates value of difference between target camshaft position (bank 1 / intake side) and actual camshaft position (bank 1 / intake side).
VVT Gap B2 EX (Variable Valve Timing Difference between Target and Actual Position (Bank 2 Exhaust Side), °)
This parameter indicates value of difference between target camshaft position (bank 2 / exhaust side) and actual camshaft position (bank 2 / exhaust side).
VVT Gap B2 IN (Variable Valve Timing Difference between Target and Actual Position (Bank 2 / intake Side, °)
This parameter indicates value of difference between target camshaft position (bank 2 / intake side) and actual camshaft position (bank 2 / intake side).
TP Sensor 1 Volt (TP Sensor (Main) Output Voltage, V)
TP Sensor (Main) reading provides throttle valve opening information in the form of voltage.
TP Sensor 2 Volt (TP Sensor (Sub) Output Voltage, V)
TP Sensor (Sub) reading provides throttle valve opening information in the form of voltage.
APP Sensor 1 Volt (APP Sensor (Main) Output Voltage, V)
APP Sensor (Main) reading provides accelerator pedal opening information in the form of voltage.
APP Sensor 2 Volt (APP Sensor (Sub) Output Voltage, V)
APP Sensor (Sub) reading provides accelerator pedal opening information in the form of voltage.
Accel Position (Absolute Accelerator Pedal Position, %)
Accelerator pedal position is indicated as 0 - 5% at fully released position, and 90 - 100% at fully depressed position.
Throttle Position (Absolute Throttle Position, %)
Throttle position is indicated as 0 - 5% at fully closed position, and 90 - 100% at full open position.
Target Throttle Pos (Target Throttle Valve Position, %)
Target throttle valve position is ECM internal parameter which indicates the ECM requested throttle valve position.
O2S B1 S1 (HO2S-1 Bank 1, V)
It indicates output voltage of HO2S-1 (bank 1) installed on exhaust manifold (pre-TWC).
O2S B1 S2 (HO2S-2 Bank 1, V)
It indicates output voltage of HO2S-2 installed on exhaust manifold (post-TWC).
O2S B2 S1 (HO2S-1 Bank 2, V)
It indicates output voltage of HO2S-1 (bank 2) installed on exhaust manifold (pre-TWC).
O2S B2 S2 (HO2S-2 Bank 2, V)
It indicates output voltage of HO2S-2 (bank 2) installed on exhaust manifold (post-TWC).
Battery Voltage (V)
This parameter indicates battery positive voltage inputted from main relay to ECM.
Fuel Tank Level (%)
This parameter indicates approximate fuel level in fuel tank. Detectable range of fuel level sensor (main and sub) is set as 0 to 100%.
Fuel Tank Pressure (Pa)
This parameter indicates fuel tank inside pressure. It is detected by fuel tank pressure sensor.
A/C Pressure (A/C Refrigerant Absolute Pressure, kPa)
This parameter indicates A/C refrigerant absolute pressure which is detected by A/C refrigerant pressure sensor.
Generator Cont Duty (Generator Control Signal Duty ratio, %)
This parameter indicates generator control duty ratio that controls electricity production of generator by ECM.
100%: No limitation for generation
0%: Maximum limitation for generation
Generator Field Duty (Generator Field Coil Monitor Signal Duty Ratio, %)
This parameter indicates operation rate (status of electricity production) of generator by field coil duty ratio.
100%: maximum operation.
0%: minimum operation.
Radiator Fan Relay 1 (Radiator Cooling Fan Relay No.1, ON/OFF)
ON: ON command being output to radiator cooling fan relay No.1.
OFF: No command being output.
Radiator Fan Relay 2 (Radiator Cooling Fan Relay NO.2, ON/OFF)
ON: ON command being output to radiator cooling fan relay No.2.
OFF: No command being output.
Radiator Fan Relay 3 (Radiator Cooling Fan Relay No.3, ON/OFF)
ON: ON command being output to radiator cooling fan relay No.3.
OFF: No command being output.
A/C Comp Relay (A/C Compressor Relay, ON/OFF)
This parameter indicates the state of the A/C compressor relay.
EVAP Vent Valve (EVAP Canister Vent Solenoid Valve, Close/Open)
Close: ON command being output to EVAP canister vent solenoid valve.
Open: No command being output.
Fuel Pump (ON/OFF)
ON is displayed when ECM activates the fuel pump via the fuel pump relay switch.
PSP Switch (Power Steering Pump Pressure Switch, ON / OFF)
ON: PSP switch signal is ON.
OFF: PSP switch signal is OFF.
A/C Switch (ON/OFF)
ON: Command for A/C operation being output from ECM to HVAC.
OFF: Command for A/C operation not being output.
Blower Fan (ON/OFF)
This parameter indicates the state of the blower fan selector.
Brake Light Switch (ON/OFF)
This parameter indicates state of the brake light switch.
ON: Brake light switch is ON. (Brake pedal depressed)
OFF: Brake light switch is OFF. (Brake pedal depressed)
Brake Switch (Brake Pedal Position Switch ON/OFF)
This parameter indicates the state of the brake pedal position switch.
ON: Brake pedal position switch is ON. (Brake pedal released)
OFF: Brake pedal position switch is OFF. (Brake pedal depressed)
Electric Load (ON/OFF)
ON: Headlight, clearance light or rear defogger ON signal inputted.
OFF: Above electric loads all turned OFF.
PNP Signal (P/N/D) (A/T model)
Whether the transmission range switch is at P or N range or at other range is displayed. If at P or N range, "P/N" is displayed and if at other than "P" and "N", "D" is displayed.
Fuel Cut (ON/OFF)
ON: Fuel being cut (output signal to injector is stopped)
OFF: Fuel not being cut
MIL (Malfunction Indicator Lamp, ON/OFF)
This parameter indicates the commanded state of the MIL control circuit by ECM.
Cold Start (ON/OFF)
This parameter indicates displays whether the engine meets the conditions for a cold startup during the present ignition cycle.