Japan position and proposal on draft of OBD-gtr 3 Feb 2014

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Charla Barton
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1 EPPR Rev.1 Japan position and proposal on draft of OBD-gtr 3 Feb 2014 Definition of color OBD emission threshold Ministry of the Environment(MOE), Japan & Ministry of Land, Infrastructure, Transport and Tourism (MLIT), Japan

2 OBD emission thresholds Japan s OBD-I concept The purpose of OBD is to prevent air pollution by detecting the failure relevant to gaseous emissions, warning the vehicle operator, and repairing promptly. Although various technical methods for detecting malfunction are possible, we consider it appropriate to mandate the diagnosis which meets the following points as the first step. To detect the failure without false detection. To introduce OBD-I at an early stage as soon as possible. To keep down the cost of OBD and to encourage to be introduced into more number of motorcycles. 2

Japan's definition of color for EPPR-05-09 Torque Reduction and/or Functional Safety Red Not relevant to gaseous emissions.

3 Japan's definition of color for EPPR Torque Reduction and/or Functional Safety Red Not relevant to gaseous emissions. Repair and Maintenance Information Under discussion (yellow/red) It makes no sense to force the way of an information disclosure under various conditions of CPs. disclosure method e.g. website, service manual etc... scope of disclosure e.g. Secure information shouldn't be disclosure from the viewpoint of antitheft. EV and FCV (Scope) Red EV and FCV do not emit gaseous air pollutants. OBD Threshold for OBD-I Red Japan's OBD-I defines digitally detected (ON/OFF) failures. 3

4 Position on OBD emission threshold Digitally detected (On / Off detected)

5 OBD Emission Threshold Sensors Voltage Input (0-5Volt) Pulse sensor AC pulse Block pulse Unnecessary OBD emission threshold Digitally detected (open circuit/ short to ground or power) OBD-II(gray out) Analog (interlevel) detected (stuck / drift [characteristic change]) example devices including EPPR-05-09e (table B2.2-1) OBD-I OBD-II Barometric pressure sensor Accelerator (pedal / handle) position sensor Engine coolant temperature Intake air temperature sensor OBD-I OBD-II Crankshaft position sensor Actuator OBD-I OBD-II Solenoid(Idle Air Control) Injector O2 sensor heater Reasons why OBD threshold is unnecessary for digitally detected failures on the next slide.

6 Circuit Diagnostics <Sensor> MAPS : Manifold Absolute pressure sensor MAPS Circuit Open X ECU MAPS MAP センサ X Circuit Open ECU 5V 5V 470kΩ A/D 5 volt Voltage of Sensor (V) Circuit High, Circuit Open Circuit Low, Circuit Open Manifold Absolute pressure(mmhg) Emission threshold is unnecessary because it is judged by the threshold of circuit diagnostics [example : threshold of circuit diagnostics is over 4.5 volt] This voltage range is correct in design The malfunction of the sensor is detected when the voltage value does not fit within this range.

7 Circuit Diagnostics <Sensor(pulse output type)> CKP sensor : Crank Position sensor Normality pulse E C U CKP sensor Abnormality pulse Emission threshold is unnecessary because it can be detected by the absence of the pulse. The malfunction of the sensor is detected when the pulse signal from the sensor fails. However, this detection requires another condition as well that the crank shaft is rotating, so it is necessary to make judgment by both of information of the pulse and starter signal. [example of other information : starter signal at the engine start] 7

8 Circuit Diagnostics < Solenoid> 12V Solenoid ECU Normality CPU Monitor Movement Movement signal ON Monitor signal OFF 12V 0V Solenoid : Secondary air injection system The malfunction is judged by the level of monitor signal. 12V ECU Circuit open CPU Monitor Movement Movement signal Monitor signal The malfunction is judged by this difference. ON OFF 12V 0V The solenoid to which this diagnostic approach is applied is the following. *O2 sensor heater circuit *Solenoid of secondary air injection Emission threshold is unnecessary because it can be judged by the signal condition. 8

9 How to detect failure by Fuel System Monitoring

10 How to Detect Failure by Fuel System Monitoring No emission threshold (in J-OBD-I) OBD emission threshold is not used for fuel system monitoring because the malfunction of a component can be detected by monitoring of significant fuel trim value behavior. How to demonstrate To be able to detect the fault on a specific test cycle when electrical failure (open / short circuit) of the component is simulated. ECU Fuel Pump Injector O2 Sensor Correction toward rich Fuel trim value Judgment value for irregular condition: Lean Side (This value is defined by constructor) Correction toward lean Normal behavior Judgment value for irregular condition : Rich Side 10 (This value is defined by constructor)

Automobili Lamborghini s.p.a. OBDII MY 07 Section 18 Page 1 FAULT CODE TABLE

Automobili Lamborghini s.p.a. OBDII MY 07 Section 18 Page 1 FAULT CODE TABLE Automobili Lamborghini s.p.a. OBDII MY 07 Section 18 Page 2 DIAGNOSTIC TROUBLE CODE DEFINITIONS P0016 Crankshaft Position Camshaft