Trinity PID list Page 1 Trinity PID LIST The Trinity offers many, many parameters to monitor! Each of them has a special definition and abbreviation in your vehicles computer. The list below is a general guideline and description for some of the parameters. How to bleed ABS with gm tech2 scan tool submitted 3. Refer to Diagnostic Trouble Code (DTC) List and diagnose the appropriate DTC. If the brake pedal feels spongy, perform the conventional brake bleed procedure again. Π Rendered by PID 29693 on r2-app-04bafa36288d6d7ad at 2019-06-15 18:69+00:00 running 092e963 country code.
PIDS are usually the serial data that can be used from the vehicle computer making use of a scan tool. PIDS include:
- Position of the OBD II Program Component Screens
(Ready or Comprehensive, or Not Prepared or Unfinished) - Live life Sensor Information
(Air sensor rich/lean indication, coolant heat range, MAP value, TPS worth, vehicle speed, mass air flow flow, normal temperature, engine rpm, etc.) - Status of Buttons or Gadgets
(luxury cruise handle on/off. brake your pedal switch on/off. TCC involved/disengaged, etc.) - Lóng and Brief Term Fuel Cut, O2 sensor mix counts, injector length of time.
- Atmosphere Flow Rate From MAF- The air flow rate as sized by the mass air stream sensor.
- Absolute Throttle Placement- The overall throttle position (not really the comparable or learned) throttle position. Generally above 0% at idle and much less than 100% at complete throttle.
- Engine Coolant Temperatures- Engine coolant heat as study by the motor coolant heat range sensor. This value should become compared to the real coolant temperature to see if they fit.
You can use an infrared thermometer or various other thermometer to measure the temperatures of the cooIant at the thérmostat shop. If the real heat and shown temperature perform not complement, it would inform you the coolant sensor is usually not reading correctly. - Engine RPM- The present engine speed in cycles per minute (RPM).
- Gas Rail Stress- Stress in the energy railroad when the reading through is definitely referenced to atmosphere (gauge pressure).
- Ignition Timing Progress- Degrees of ignition time (spark) progress for #1 canister (not including mechanical advance). Intake Manifold
- Pressure- Pressure in the consumption manifold produced from a Manifold Absolute Stress (MAP) sensor.
- Brief Term Energy Cut (STFT)- The modification factor getting utilized in shut cycle by the PCM to sustain a balanced fuel mixture. If the energy system is open loop, 0% correction should become documented. As with LTFT, the amount should generally be plus ór minus five. lf higher than 10, it shows a gas mixture issue.
- O2 Sensor Output Voltage- The real voltage being produced by the air sensor (should end up being 0.1 to 1.0 volts for a conventional zirconia U2 sensor).
For wide-band O2 detectors and linear U2 sensors, the worth may be higher, or it may become transformed to a zéro to one voIt level.
There may become multiple O2 sensor PIDS based on homw many sensors the engien offers (Loan company1 sensor 1, Standard bank2 Sensor 1, etc.). - Period Since Engine Start - Displays the time the engine has ended up operating since it had been last began. Vehicle Quickness - Shows vehicle street swiftness as go through by the automobile quickness sensor (VSS).
- Overall Load Value- This is certainly the normalized value of air mass per intake stroke displayed as a percent.
- Overall Throttle Place- The absolute throttle place (not really the comparative or discovered) throttle placement. Usually above 0% at idle and much less than 100% at complete throttle.
- Barometric Pressure- Barometric stress as motivated by a barometric pressure (BARO) sensor. Note some weather conditions services report barometric pressure modified to ocean degree. In these situations, the documented value may not really match the displayed worth.
- Catalyst Temperature- The temp inside the cataIytic converter.
- Instructed Equivalence Ratio- Energy techniques that make use of conventional air sensor shows the commanded open up cycle equivalence proportion while the program can be in open loop. Should document 100% when in closed loop gas.
To get the real air/fuel percentage being commanded, exponentially increase the stoichiometric A/N percentage by the equivalence ratio. For instance, fuel, stoichiometric is definitely 14.64:1 proportion.
If the gas control system was command word an equivalence ratio of 0.95, the commanded A/F percentage to the motor would become 14.64. 0.95 = 13.9 A/F. - Told Evaporative Clear- This value should go through 0% when no free is instructed and 100% at the optimum commanded free place/flow.
- Told Throttle Actuator- This value should become 0% when the throttle can be commanded closed and 100% when the throttle can be commanded open up.
- Handle Component Voltage- Energy insight to the control module. Normally, this should show battery pack voltage minus any voltage drop between the electric battery and the handle module (which should end up being less than a few tenths of á volt).
Distance Since DTCs Cleared - How numerous mls the automobile has been recently powered since any DTCs were eliminated with a scan device. Distance Traveled While MIL On- Shows you how numerous kilometers the vehicle has become powered with the MIL lighting on. Furthermore informs you
how very long the car owner has happen to be ignoring the lighting!- EGR Mistake- Calculated mistake as percent of actual commanded EGR. Unfavorable percent can be less than commanded and optimistic is more than told. The better the value, the even more likely the EGR device is adhering.
- EVAP Purge- This value is shown as a proportion and is normalized for all sorts of EVAP systems. When EVAP free is told off, the worth should become o%, and 100% when it is usually commanded on.
This is definitely an essential worth o check out if the engine provides lower than regular LTFT and STFT energy trim quantities (suggesting a rich fuel problem). The clear control device may become leaking vapor into the intaké manifold.
Tó remove the purge device as a possible supply of gasoline vapor, touch off the free vapor line, operate the motor and recheck the STFT number. If it is certainly back to normal, the handbag valve will be seeping. - EVAP System Vapor Stress- Evaporative program vapor stress normally acquired from a sensor situated in the gas container.
- Energy Degree Input- Signifies the nominal fuel tank liquid fill capability as a pct of optimum.
- Gas Rail Pressure- Indicates the gasoline rail pressure at the engine referenced to atmosphere (gauge pressure).
- Gasoline Rail Stress Rel Manifold- The fuel rail pressure referenced to the manifold vacuum (relatives stress).
- Intake Air Heat range- The temperature of the air flow in the intaké manifold as read through by the intake manifold air temp sensor. This should be the exact same as normal temperature in a cold engine that provides not ended up started, and should be increased than ambient tempertarue if teh motor is cozy and offers been running.
- Moments Work with MIL On- Accumulated mins of engine run period while the MIL lighting is definitely on.
- U2 Sensor Wide Range mother- Milliamp current for linear ór wide-ratio oxygen detectors.
- O2 Sensor Wide Range Sixth is v- Voltage fór linear or widé-ratio air sensors.
- Relative Throttle Placement- Essential contraindications or learned throttle placement.
- Time Since DTCs Cleared- Accumulated time since DTCs where cleaned with a scan tool.
Warm-ups Sincé DTCs Cleared - Number of warm-up cycles since all DTCs were removed with a scan device. A warm-up is certainly defined as the coolant temperatures rising by at least 22°C (40°F) and the engine temperature reaches at a least 70°Chemical (160°Y), or 60°G (140°F) for diesel engines.- Gasoline System 1 Position
- Gasoline System 2 Status
- Secondary Air Standing
- Additional Input Status
- Misfire Monitor Standing
- Energy System Position
- Comprehensive Component Supervising Status
- Catalyst Monitoring Status
- Heated Driver Monitoring Status
- Evaporative System Monitoring Status
- Extra Air System Monitoring Status
- A/C Program Refrigerant Supervising Status
- Air Sensor Monitoring Status
- Air Sensor Heating unit Monitoring Status
- EGR Program Monitoring Standing
- ECU Air Sensor Test Results
DIAGNOSTIC VALUE
PIDS supply valuable analysis info when checking the operation or position of numerous detectors, circuits and buttons in the automobile's engine management program.
For illustration, if the Million lamp is usually on and you discover an oxygen sensor program code, you can call up the air sensor PIDS ón your scan tool screen to see what the air sensor is definitely informing thé PCM.
Yóu can also compare PIDS to notice how one element may end up being influencing another.
For illustration, when you instantly open the throttle ón an idling engine, rpm should increase, the TPS reading should alter and the MAP sensor value should fall.
PIDS can also be compared using a 'graphing muItimeter' or on á scope that turns the voltage ideals to waveforms.
Evaluating the waveforms of various related sensors can help you find problems that might normally be difficult to detect.
SCAN TOOL PID Capacity
Various scan tools have different features to screen PlDS.
Thé OEM scan tools used by brand-new car dealers are able of displaying every achievable PID value that is definitely built into the motor management system.
Almost all general objective aftermarket scan tools do not really contain the software program that enables them to match the OEM scan equipment in every respect - but for most programs they can screen all the important PIDS.
The problems will be you in no way know what PIDS are lacking until you go searching for one and find it isn't generally there. Bummer.
That'beds why several professional technicians own several scan equipment: an aftermarket general purpose check out device, and one or even more OEM scan tools for the helps make they most frequently work ón.
Live data provides real-time dimensions of system advices.
Statuses inform you if a switch, exchange or other device is definitely ON/Off of or has been told ON or 0FF.
Readiness monitors inform you if the screens have finished or not.
Test outcomes are scored by the PCM and compared against preprogrammed pass/fail beliefs in teh PCM's memory.
LIVE Information:
Bad LTFT numbers indicate the PCM can be delivering less gas to compensate for a rich fuel problem. If the LTFT can be higher than 10 either way, it may show a issue.
NOTE: the heat reading through will rely on the place of the sénsor. If the sénsor will be situated under the hóod, it may learn higher than the outside temperatrue when the automobile is not really relocating becuase of motor high temperature.
The proportion vlue should be 0% when EGR is commanded off (at idle), 100% when EGR will be commanded on (typically when cruising under gentle insert), and between 0% and 100% is the EGR solenoid will be duty cycled on ánd off by thé PCM (depending on automobile speed, motor insert and temperature).
TROUBLE Requirements AND Get cold FRAME Information
Program code visitors and scan tools will also screen Stored Diagnostic Trouble Codes (DTCs), generally in numeric order.
Many scan equipment can also display Pending Difficulty Rules.
These are codes that indicate a fault has been recognized, but that the problem has not yet repeated.
If the fault repeats under comparable driving conditions, it will usually trigger the Pending Program code to turn out to be a Stored Code and convert on the MIL light.
Numerousscan equipmentcan also display Freeze Frame information.
These are usually PIDS that are taken when a fault occurs so you can relate to them later when figuring out the problem.
Freeze frame information typically consists of associated sensor values at the time the mistake occurred.
STATUS AND Preparedness Screens
OBD II needs the following status and readiness displays:
PIDS are the serial information that can end up being used from the automobile computer making use of a scan device. PIDS consist of:
- Status of the OBD II Program Component Monitors
(Prepared or Full, or Not really Ready or Imperfect) - Live life Sensor Information
(Oxygen sensor wealthy/lean sign, coolant heat, MAP worth, TPS value, vehicle velocity, mass atmosphere flow, normal temperature, motor rpm, etc.) - Standing of Fuses or Products
(vacation cruise control on/away from. brake your pedal switch about/off. TCC engaged/disengaged, etc.) - Lóng and Short Term Fuel Trim, O2 sensor get across counts, injector length.
- Atmosphere Flow Price From MAF- The airflow price as measured by the mass air circulation sensor.
- Complete Throttle Position- The overall throttle placement (not the essential contraindications or discovered) throttle placement. Usually above 0% at idle and much less than 100% at complete throttle.
- Motor Coolant Heat range- Engine coolant heat range as go through by the motor coolant temp sensor. This worth should become compared to the real coolant heat to see if they fit.
You can use an infrared thermometer or various other thermometer to determine the heat of the cooIant at the thérmostat wall plug. If the actual temperatures and displayed temperature do not match up, it would inform you the coolant sensor will be not reading through properly. - Motor RPM- The current engine speed in cycles per minute (RPM).
- Fuel Rail Pressure- Stress in the fuel rail when the reading through can be referenced to atmosphere (gauge pressure).
- Ignition Timing Advance- Degrees of ignition time (interest) advance for #1 canister (not including mechanical progress). Consumption Manifold
- Stress- Pressure in the intake manifold extracted from a Manifold Overall Stress (MAP) sensor.
- Short Term Gasoline Cut (STFT)- The modification factor becoming used in closed loop by the PCM to keep a balanced energy blend. If the energy system will be open loop, 0% correction should be reported. As with LTFT, the quantity should generally be plus ór minus five. lf better than 10, it indicates a gas mixture issue.
- O2 Sensor Output Voltage- The real voltage being created by the oxygen sensor (should be 0.1 to 1.0 volts for a conventional zirconia U2 sensor).
For wide-band O2 receptors and linear U2 detectors, the worth may end up being increased, or it may end up being transformed to a zéro to one voIt range.
There may be multiple O2 sensor PIDS depending on homw several sensors the engien provides (Bank1 sensor 1, Standard bank2 Sensor 1, etc.). - Time Since Motor Begin - Displays the time the engine has become operating since it has been last began. Vehicle Swiftness - Shows vehicle road speed as learn by the automobile speed sensor (VSS).
- Overall Load Value- This can be the normalized worth of air mass per consumption stroke displayed as a percent.
- Overall Throttle Position- The total throttle position (not the relatives or discovered) throttle position. Usually above 0% at idle and less than 100% at complete throttle.
- Barometric Pressure- Barometric pressure as established by a barometric stress (BARO) sensor. Note some climate services report barometric pressure adjusted to sea degree. In these instances, the reported value may not match up the displayed worth.
- Prompt Temperature- The temperatures inside the cataIytic converter.
- Commanded Equivalence Percentage- Gas systems that use conventional air sensor shows the commanded open loop equivalence ratio while the program will be in open cycle. Should report 100% when in closed loop energy.
To get the actual surroundings/fuel ratio getting commanded, exponentially increase the stoichiometric A/F ratio by the equivalence percentage. For instance, gas, stoichiometric is usually 14.64:1 percentage.
If the fuel control system was order an equivalence proportion of 0.95, the commanded A/N ratio to the engine would be 14.64. 0.95 = 13.9 A/F. - Commanded Evaporative Free- This value should read 0% when no clear is instructed and 100% at the maximum commanded free placement/flow.
- Instructed Throttle Actuator- This value should be 0% when the throttle can be commanded shut and 100% when the throttle is definitely commanded open up.
- Handle Component Voltage- Energy insight to the handle module. Normally, this should show battery voltage minus any voltage fall between the electric battery and the handle component (which should be much less than a few tenths of á volt).
Range Since DTCs Cleared - How several miles the automobile has ended up driven since any DTCs had been healed with a scan tool. Length Traveled While Million On- Shows you how numerous kilometers the automobile has been recently driven with the MIL lighting on. Also informs you
how longer the drivers has happen to be disregarding the lighting!- EGR Mistake- Calculated mistake as percent of real commanded EGR. Adverse percent can be less than commanded and beneficial is more than told. The higher the value, the more likely the EGR device is sticking.
- EVAP Free- This worth is displayed as a percentage and will be normalized for all types of EVAP systems. When EVAP purge is commanded off, the worth should be o%, and 100% when it is certainly told on.
This is certainly an essential worth o check out if the motor has lower than regular LTFT and STFT gas trim numbers (suggesting a wealthy fuel situation). The free device may become leaking steam into the intaké manifold.
Tó eliminate the free device as a possible source of fuel vapor, crunch off the purge vapor hose pipe, run the engine and recheck the STFT amount. If it can be back to normal, the handbag valve is definitely dripping. - EVAP Program Vapor Pressure- Evaporative system vapor stress normally attained from a sensor situated in the gasoline tank.
- Fuel Level Input- Shows the minimal fuel container liquid fill up capability as a percent of optimum.
- Gas Rail Stress- Indicates the gasoline rail stress at the motor referenced to atmosphere (gauge stress).
- Gasoline Rail Pressure Rel Manifold- The fuel rail stress referenced to the manifold vacuum cleaner (essential contraindications stress).
- Intake Air Heat range- The heat range of the surroundings in the intaké manifold as learn by the intake manifold air flow heat range sensor. This should end up being the exact same as normal temperatures in a cold motor that offers not been started, and should become higher than normal tempertarue if teh engine is comfy and has been operating.
- A few minutes Work with Million On- Accumulated minutes of engine run time while the MIL light is certainly on.
- O2 Sensor Wide Range mA- Milliamp current for linear ór wide-ratio oxygen sensors.
- O2 Sensor Wide Variety V- Voltage fór linear or widé-ratio air receptors.
- Relatives Throttle Place- Comparable or discovered throttle position.
- Period Since DTCs Cleared- Accumulated time since DTCs where cleaned with a scan device.
Warm-ups Sincé DTCs Cleared - Quantity of warm-up process since all DTCs were cleaned with a scan tool. A warm-up is definitely defined as the coolant temperatures rising by at minimum 22°D (40°F) and the engine temperature gets to at a minimum 70°M (160°N), or 60°M (140°Y) for diesel motors.- Gas Program 1 Standing
- Energy Program 2 Status
- Secondary Air Status
- Additional Input Position
- Misfire Keep track of Status
- Energy System Position
- Comprehensive Component Monitoring Standing
- Prompt Monitoring Standing
- Heated Driver Monitoring Status
- Evaporative System Monitoring Standing
- Extra Air System Monitoring Status
- A/D Program Refrigerant Monitoring Standing
- Air Sensor Monitoring Position
- Air Sensor Heating unit Monitoring Position
- EGR System Monitoring Position
- ECU Oxygen Sensor Test Results
DIAGNOSTIC VALUE
PIDS offer valuable diagnostic information when checking the operation or standing of several sensors, circuits and goes in the vehicle's engine management program.
For illustration, if the Million lamp can be on and you find an air sensor program code, you can call up the oxygen sensor PIDS ón your scan tool screen to find what the oxygen sensor is informing thé PCM.
Yóu can also compare PIDS to discover how one element may end up being influencing another.
For illustration, when you instantly open up the throttle ón an idling engine, rpm should enhance, the TPS reading through should change and the Chart sensor value should fall.
PIDS can also be compared making use of a 'graphing muItimeter' or on á scope that changes the voltage ideals to waveforms.
Evaluating the waveforms of various related sensors can assist you find flaws that might normally be difficult to detect.
SCAN Device PID CAPABILITY
Different scan tools have different features to display PlDS.
Thé OEM check tools utilized by new car sellers are capable of exhibiting every feasible PID worth that is built into the engine management system.
Most general purpose aftermarket scan tools do not include the software program that allows them to match the OEM scan equipment in every regard - but for most applications they can display all the important PIDS.
The problems is definitely you never understand what PIDS are usually missing until you move looking for one and discover it isn't now there. Bummer.
That's why many professional technicians own several scan equipment: an aftermarket general purpose check out device, and one or more OEM scan equipment for the makes they nearly all frequently work ón.
Live data offers real-time measurements of program advices.
Statuses tell you if a switch, exchange or additional device is definitely ON/Out or offers been commanded ON or 0FF.
Openness monitors tell you if the monitors have completed or not.
Test results are assessed by the PCM and compared against preprogrammed move/fail ideals in teh PCM's storage.
Live life DATA:
Bad LTFT numbers indicate the PCM is delivering less gasoline to compensate for a wealthy fuel condition. If the LTFT will be higher than 10 either way, it may show a issue.
Be aware: the temperatures reading through will rely on the area of the sénsor. If the sénsor is situated under the hóod, it may read increased than the outdoors temperatrue when the vehicle is not really moving becuase of engine heat.
The proportion vlue should be 0% when EGR is instructed off (at nonproductive), 100% when EGR is definitely instructed on (typically when traveling under gentle load), and between 0% and 100% is the EGR solenoid is responsibility cycled on ánd off by thé PCM (depending on vehicle speed, motor load and temp).
TROUBLE CODES AND FREEZE FRAME DATA
Program code visitors and scan tools will also display Stored Diagnostic Trouble Requirements (DTCs), generally in numeric purchase.
Numerous scan tools can also screen Pending Trouble Rules.
These are usually rules that reveal a fault has become recognized, but that the problem has not yet recurring.
If the fault repeats under related driving situations, it will usually result in the Pending Code to turn out to be a Stored Program code and convert on the MIL light.
Manycheck out toolscan also display Freeze out Frame information.
These are PIDS that are usually captured when a problem occurs so you can direct to them afterwards when diagnosing the problem.
Stop frame information typically includes related sensor ideals at the period the problem happened.
Standing AND Openness Displays
OBD II requires the adhering to status and readiness displays: