Use the Typical Scan Data Values table only after the Powertrain On-Board Diagnostic System Check has been completed, no DTCs were noted and you have determined the on-board diagnostics are functioning properly. Scan tool values from a properly running engine may be used for comparison with the engine you are diagnosing. The Typical Scan Data values represent values that would be seen on a normally running engine.
Important:: A scan tool that displays faulty data should not be used, and the problem should be reported to the scan tool manufacturer. Use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.
Only the parameters listed below are referred to in this service manual for use in diagnosis. For further information on using the scan tool to diagnose the PCM and related sensors, refer to the applicable reference section listed below. If all values are within the typical range described below, refer to Symptoms section for diagnosis. The Typical Scan Data Values table contains all the parameters included in the following data lists arranged in alphabetical order:
| • | Engine Data 1 - Contains general information regarding fuel delivery and basic engine operating conditions. |
| • | Engine Data 2 - Contains general information regarding IC, KS, A/C, and basic engine operating conditions. |
| • | Catalyst Data - Contains information specific to the TWC diagnostics and parameters required to verify proper TWC system operation. |
| • | EGR Data - Contains information specific to the Exhaust Gas Recirculation system flow diagnostics and the EGR valve pintle position sensor diagnostics. Also displays parameters required to verify proper EGR system operation. |
| • | EVAP Data - Contains information specific to the Evaporative Emissions (EVAP) control system. Also displays parameters required to verify proper EVAP system operation. |
| • | HO2S Data - Contains information specific to the Heated Oxygen Sensor diagnostics and parameters required to verify proper HO2S operation. |
| • | Misfire Data - Contains information specific to the misfire diagnostics and parameters required to verify proper operation with regard to misfire. |
For scan tool parameter definitions, refer to Engine Scan Tool Data Definitions
Important: Use the Typical Scan Data Values only after the following conditions
are met:
• The engine is idling unless checking a value at a specified RPM. • The lower radiator hose is hot. • The throttle is closed unless checking a value at a specified
RPM. • The vehicle is in PARK or NEUTRAL. • The vehicle is operating in Closed Loop. • The vehicle accessories are turned off.
Scan Tool Parameter | Data List | Units Displayed | Typical Data Value | Reference |
|---|---|---|---|---|
A/C High Side Pressure | Engine 2 | Volts | Varies with refrigerant temperature | Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis |
A/C Pressure Out of Range | Engine 2 | Yes / No | No (Yes with low or high A/C refrigerant pressure) | Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis |
A/C Request | Engine 2 Catalyst Misfire | Yes / No | No (Yes with A/C ON) | Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis |
Actual EGR Position | Engine 1 Engine 2 EGR Misfire | Percent | 0% | |
Air/Fuel Ratio | Engine 1 Catalyst HO2S | Ratio | 14.2:1 - 14.7:1 | |
BARO | Engine 1 Engine 2 Catalyst EVAP EGR | kPa / Volts | 65 - 110 kPa (Depends on altitude and barometric pressure) | DTC P0107 Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage |
Commanded A/C | Engine 2 Catalyst Misfire | On / Off | Off (On with A/C compressor engaged) | Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis |
Commanded Fan 1/Commanded Fan 2 | Engine 2 Catalyst | On / Off | Off (On with fans running) | |
Commanded GEN | Engine 1 | On / Off | On | |
Commanded Starter | Engine 2 | Enabled / Disabled | Disabled | |
Cruise | Engine 1 | Engaged / Disengaged | Disengaged | |
Cruise Inhibited | Engine 1 | Yes / No | Yes | |
Current Gear | Engine 1 | 1 / 2 / 3 / 4 | 1 | 4T65-E (VIN 1) Automatic Transaxle Diagnosis |
Decel Fuel Mode | Engine 1 Engine 2 Catalyst HO2S Misfire | Active / Inactive | Inactive | |
Desired EGR Position | Engine 1 Engine 2 EGR Misfire | Percent | 0% | |
Desired Idle Speed | Engine 1 Engine 2 Catalyst EVAP | RPM | PCM commanded idle speed (varies with termperature) | |
ECT | All | °C, °F | 85°C-105°C / 185°F-220°F (varies with temperature) | DTC P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage |
EGR Closed Valve Pintle Position | EGR | Volts | 0.14 - 1.0 Volts | |
EGR Duty Cycle | EGR | Percent | 0% | |
EGR Feedback | EGR | Volts | 0.14 - 1.0 Volts | |
EGR Flow Test Count | EGR | Counts | 0 - 10 | |
EGR Position Error | EGR | Percent | 0% - 9% | |
Engine Load | Engine 1 Engine 2 Catalyst Misfire | Percent | 2% - 5% at idle 7% - 10% at 2500 RPM | -- |
Engine Oil Level | Engine 2 | Ok / Low | Ok | |
Engine Run Time | Engine 1 Engine 2 Catalyst EVAP | Hr: Min: Sec | Depends on time since startup | -- |
Engine Speed | All | RPM | ± 100 RPM from Desired Idle Speed | -- |
EVAP Cansiter Purge | EVAP HO2S | Percent | 0% - 25% (varies) | |
EVAP Fault History | EVAP | No Fault Excess Vacuum Purge Valve Leak Small Leak Weak Vacuum | No Fault | |
EVAP Vent Sol. | EVAP | Open / Closed | Open | |
Fuel Level | EVAP | Percent | 0% - 25% (varies) | |
Fuel Pump | Engine 2 | On / Off | On | |
Fuel Pump Speed (VIN 1) | Engine 2 | Normal / High | Normal | |
Fuel Tank Pressure | EVAP | In.H2O Volts | 0 | |
Fuel Trim Cell | Engine 1 Misfire | Cell # | 0 | |
Fuel Trim Learn | Engine 1 Catalyst- | Disabled / Enabled | Enabled | -- |
Generator PWM | Engine 2 | Percent | Varies | Charging System |
HO2S Sensor 1 | Engine 1 HO2S | Not Ready / Ready | Ready | |
HO2S Sensor 1 | Engine 1 Catalyst HO2S | Millivolts | 0 - 1000 constantly varying | |
HO2S Sensor 2 | Engine 1 Catalyst HO2S | Millivolts | 0 - 1000 constantly varying | |
HO2S Warm Up Time Sensor 1 / HO2S Warm Up Time Sensor 2 | HO2S | Min: Sec | Depends on startup intake air temperature, startup engine coolant temperature, and time to HO2S activity | |
HO2S XCounts | HO2S | Counts | Varies | -- |
IAC Position | Engine 1 Engine 2 Catalyst EGR Misfire | Counts | 10 - 40 | |
IAT | Engine 1 Engine 2 Catalyst EVAP HO2S | °C, °F | Varies with ambient air termperature | DTC P0112 Intake Air Temperature (IAT) Sensor Circuit Low Voltage |
Ignition 1 | Engine 1 Engine 2 EGR HO2S | Volts | 13 (varies) | |
Ignition Mode | Engine 2 | IC / Bypass | IC | |
Injector Pulse Width | Engine 1 Catalyst | Milliseconds | 1.5 - 3.5 (varies with engine load | -- |
Knock Retard | Engine 2 | Degrees | 0 degrees | |
Long Term FT | Engine 1 Misfire | Percent | -10% - 10% | |
Loop Status | Engine 1 Catalyst HO2S Misfire | Open / Closed | Closed | DTC P0125 Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control |
MAF | Engine 1 Engine 2 Catalyst HO2S | g/s | 3 - 6 g/s at idle 13 - 16 g/s at 2500 RPM (Depends on engine load and barometric pressure) | |
MAF Frequency | Engine 1 | Hz | 1200 - 3000 (Depends on engine load and barometric pressure) | |
MAP | Engine 1 Engine 2 EVAP EGR | kPa / Volts | 29 - 48 kpa / 1-2 volts (Depends on engine load and barometric pressure) | |
MIL | Engine 2 | On / Off | Off | |
Misfire Current Cylinder # | Misfire | Counts | 0 - 4 | |
Misfire History Cylinder # | Misfire | Counts | 0 | |
Misfiring Cylinder (Primary / Secondary) | Misfire | 0 - 6 | 0 | |
Power Enrichment | Engine 1 Engine 2 Catalyst HO2S Misfire | Active / Inactive | Inactive | |
Rich/Lean | Engine 1 | Rich / Lean | Constantly changing | |
Short Term FT | Engine 1 Catalyst Misfire | Percent | -10% - 10% | |
Spark | Engine 2 | Degrees | -20° (Varies) | |
Start Up ECT | EVAP HO2S | °C, °F | Depends on engine coolant temperature at time of startup | |
Start Up IAT | EVAP HO2S | °C, °F | Depends on engine ambient temperature at time of startup | |
Supercharger Boost | Engine 2 | Percent | 100% | |
Throttle at Idle | Engine 1 | Yes / No | Yes | -- |
Total Misfire Current Count | Misfire | Counts | 0 - 5 | |
Total Misfire Failures Since First Fail | Misfire | Counts | 0 | |
Total Misfire Passes Since First Fail | Misfire | Counts | 0 | |
TP Angle | Engine 1 Catalyst EGR HO2S Misfire | Percent | 0% | |
TP Sensor | Engine 1 | Volts | 0.20 - 0.74 | |
Traction Control | Engine 2 | Active / Inactive | Inactive | ABS/TCS |
Traction Control Desired Torque | Engine 2 | Percent | 80% - 95% | ABS/TCS |
Traction Control Torque | Engine 2 | Percent | 5% - 20% (Varies with load) | ABS/TCS |
Transmission Range | Engine 2 Catalyst | Park / Reverse / Neutral / Drive 4 / Driver 3 / Driver 2 / Low | Park | |
TR Switch P / A / B / C | Engine 2 | High / Low | Low / Low / High / High | |
TWC Diagnostic | Catalyst | Enabled / Disabled | Enabled | |
TWC Monitor Test Counter | Catalyst | Counts | 0 | |
TWC Protection | Engine 1 Engine 2 Catalyst HO2S Misfire | Active / Inactive | Inactive | |
Vehicle Speed | Engine 1 Engine 2 EGR Catalyst Misfire | mph / km/h | 0 | 4T65-E (VIN 1) Automatic Transaxle Diagnosis |
