Forum >Replies by 1900gte
Replies （1）
- You Reply: Hello Stanley,
Sorry for the late reaction, was out of town for a week.
I wrote a simple rough sketch with which i could simply increase the PID value and see what the ECU would return.
PID 0A and OB did not work at all. the rest till 20 works, though I wonder if some of the calcultions are correct.
For instance PID 15 LAmba is very interesting but only gives 0 or 1, i think the calculation of smallValue/200 is not correct.
So it needs more tinkering
ps. PID x0B would be great because i have a turbo car.
// mode 0 pids
#define PID_FUEL_SYS_STS 0x03
#define PID_ENGINE_LOAD 0x04
#define PID_COOLANT_TEMP 0x05
#define PID_SHORT_FUEL_TRIM 0x06
#define PID_LONG_FUEL_TRIM 0x07
#define PID_FUEL_PRESSURE 0x0A // not VAG 2003
#define PID_INTAKE_MAP 0x0B // not VAG 2003
#define PID_RPM 0x0C
#define PID_SPEED 0x0D
#define PID_TIMING_ADVANCE 0x0E
#define PID_INTAKE_TEMP 0x0F
#define PID_MAF_FLOW 0x10
#define PID_THROTTLE 0x11
#define PID_CMD_SEC_AIR_STS 0x12
#define PID_OXYGEN_SEN_PRES 0x13
#define PID_LAMBDA_B1S1 0x14 //not VAG 2003
#define PID_LAMBDA_B1S2 0x15
#define PID_RUNTIME 0x1F
#define PID_FUEL_LEVEL 0x2F
#define PID_DISTANCE 0x31
#define PID_BAROMETRIC 0x33
#define PID_LAMBDA 0x34
#define PID_CONTROL_MODULE_VOLTAGE 0x42
#define PID_ABSOLUTE_ENGINE_LOAD 0x43
#define PID_AMBIENT_TEMP 0x46
#define PID_ETHANOL_PERCENTAGE 0x52
#define PID_FUEL_RAIL_PRESSURE 0x59
#define PID_HYBRID_BATTERY_PERCENTAGE 0x5B
#define PID_ENGINE_OIL_TEMP 0x5C
#define PID_ENGINE_FUEL_RATE 0x5E
#define PID_ENGINE_TORQUE_PERCENTAGE 0x62
#define PID_ENGINE_REF_TORQUE 0x63
#define PID_ABS_ENGINE_LOAD 0x63
int COBD::normalizeData(byte pid, char* data)
{
int result;
switch (pid) {
case PID_ENGINE_LOAD: //0x04
result = (getSmallValue(data) *100)/255;
break;
case PID_COOLANT_TEMP:// 0x05
result = getSmallValue(data) - 40;
break;
case PID_SHORT_FUEL_TRIM: // kPa 0x06
result = ((getSmallValue(data)-128) *100)/128;
break;
case PID_LONG_FUEL_TRIM: // kPa 0x07
result = ((getSmallValue(data)-128) *100)/128;
break;
case PID_FUEL_PRESSURE: // PID = 0A
result = getSmallValue(data) * 3;
break;
case PID_INTAKE_MAP: // 0X0B
case PID_RPM: // 0x0C
result = getLargeValue(data) >> 2;
break;
case PID_SPEED: //0x0D
result = getSmallValue(data) ;
break;
case PID_TIMING_ADVANCE: //0x0E
result = (getSmallValue(data) /2)-64;
break;
case PID_INTAKE_TEMP: // 0x0F
result = getSmallValue(data) - 40;
break;
case PID_MAF_FLOW: //0x10
result = getLargeValue(data) / 100;
break;
case PID_THROTTLE: //0x11
result = (getSmallValue(data) *100)/255;
break;
case PID_LAMBDA_B1S1: // 0x14
result = getSmallValue(data) /200;
break;
case PID_LAMBDA_B1S2: // 0x15
result = getSmallValue(data) /200;
break;
case PID_RUNTIME: // second 0x1F
result = getLargeValue(data);
break;
case PID_FUEL_LEVEL: //0x2F
result = (getSmallValue(data) *100)/255;
break;
case PID_DISTANCE: // km //0x31
result = getLargeValue(data);
break;
case PID_BAROMETRIC: // //0X33
case PID_LAMBDA: // 0x34
result = getLargeValue(data) /32768;
break;
case PID_CONTROL_MODULE_VOLTAGE: // V 0x42
result = getLargeValue(data) / 1000;
break;
case PID_ABSOLUTE_ENGINE_LOAD: //0x43
result = (getLargeValue(data)*100)/255;
break;
case PID_AMBIENT_TEMP: //0x46
result = getSmallValue(data) - 40;
break;
case PID_ENGINE_OIL_TEMP: //0x5C
result = getSmallValue(data) - 40;
break;
case PID_ENGINE_FUEL_RATE: // L/min 0x5E
result = getLargeValue(data) /20;
break;
case PID_ENGINE_TORQUE_PERCENTAGE: // % 0x62
result = (int)getSmallValue(data) - 125;
break;
case PID_ENGINE_REF_TORQUE: // Nm 0x63
result = getLargeValue(data);
break;
/* case PID_ABS_ENGINE_LOAD : //0x63
case PID_ETHANOL_PERCENTAGE:
case PID_HYBRID_BATTERY_PERCENTAGE:
result = getLargeValue(data) * 100 / 255; // %
break;
*/ default:
result = getSmallValue(data); //speed 0x0D baromatric 0x33
}
return result;
}