Use the Typical Scan Data Values table only after the Powertrain On-Board Diagnostic System Check has been completed, no DTC(s) 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
| • | ENG 1- Contains general information regarding fuel delivery and basic engine operating conditions. |
| • | ENG 2 - Contains general information regarding IC, KS, EVAP, A/C, and basic engine operating conditions. |
Specific Engine Data
| • | EGR - 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. |
| • | CATALYST - Contains information specific to the TWC diagnostics and parameters required to verify proper TWC system operation. |
| • | HO2S - Contains information specific to the Heated Oxygen Sensor diagnostics and parameters required to verify proper HO2S operation. |
| • | MISFIRE - Contains information specific to the misfire diagnostics and parameters required to verify proper operation with regard to misfire. |
Scan Tool Parameter | Units Displayed | Typical Data Value | Reference |
|---|---|---|---|
A/C Off For WOT | Yes / No | No | PCM Controlled Air Conditioning |
A/C Refrigerant Pressure | Volts | Varies with refrigerant temperature | DTC P0530 Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit |
A/C Pressure Out Of Range | Yes / No | No (Yes with low or high A/C refrigerant pressure) | PCM Controlled Air Conditioning |
A/C Request | Yes / No | No (Yes with A/C ON) | PCM Controlled A/C Circuit Diagnosis |
A/C Slugging | Active / Inactive | Inactive | PCM Controlled A/C Circuit Diagnosis |
Actual EGR Position | Percent | 0% | EGR System |
Air/Fuel Ratio | Ratio | 14.2:1 - 14.7:1 | Fuel Metering System Components |
BARO | kPa | 65 - 110 (Depends on altitude and barometric pressure). | Information Sensors |
Boost Sol. PWM | Percent | 100% | Boost Control System |
Commanded A/C | On / Off | Off (On with A/C compressor engaged) | PCM Controlled Air Conditioning |
Commanded Fan 1/Commanded Fan 2 | On / Off | Off (On with low speed fans running) | Electric Cooling Fan |
Commanded Gen | On / Off | On | DTC P0560 System Voltage |
Commanded TCC | Engaged / Disengaged | Disengaged | 4T60-E Automatic Transaxle Diagnosis |
Cruise Engaged | Yes / No | No | DTC P1662 Cruise Control Inhibit Output Circuit |
Cruise Inhibited | Yes / No | Yes | DTC P1662 Cruise Control Inhibit Output Circuit |
Current Gear | 1 / 2 /3 / 4 | 1 | 4T60-E Automatic Transaxle Diagnosis |
Decel Fuel Mode | Active / Inactive | Inactive | Fuel Metering Modes of Operation |
Delivered Torque | Percent | 5% - 20% (Varies with load) | DTC P1653 Traction Control Delivered Torque Output Circuit Section 5E2 |
Desired EGR Position | Percent | 0% | EGR System |
Desired Idle | RPM | PCM commanded idle speed (varies with temperature). | Idle Air Control System Check |
Desired Torque | Percent | 80% - 95% | DTC P1571 Traction Control Torque Request Circuit |
ECT | °C, °F | 85°C - 105°C / 185°F - 220°F (varies with temperature). | Information Sensors |
EGR Closed Valve Pintle Position | Volts | 0.14-1.0 volt | EGR System |
EGR Duty Cycle | Percent | 0% | EGR System |
EGR Feedback | Volts | 0.14 - 1.0 volt | EGR System |
EGR Position Error | Percent | 0% - 9% | EGR System |
EGR Test Count / EGR Flow Test Count | Counts | 0 - 10 | EGR System |
Engine Load | Percent | 2% - 5% at idle 7% - 10% at 2500 RPM | -- |
Engine Oil Level - Refer to Oil Level | Ok / Low | Ok | PCM Controlled Warning Lamps |
Engine Run Time | Hr: Min: Sec | Depends on time since startup. | -- |
Engine Run Time | RPM | ±100 RPM from Desired Idle | Information Sensors |
EVAP Canister Purge / EVAP Purge PWM | Percent | 0% - 25% (varies) | EVAP Control System (G Car, C Car, and H Car VIN 1) |
EVAP Vacuum Switch | Purge / No Purge | No Purge (Purge if over 25% EVAP Purge PWM is commanded). | EVAP Control System (G Car, C Car, and H Car VIN 1) |
Fuel Pump | On / Off | On | Fuel Supply Components |
Fuel Pump Speed | Normal / High | Normal | Fuel Supply Components |
Fuel Trim Cell | Cell # | 0 | DTC P0171 Fuel Trim System Lean |
Fuel Trim Learn | Disabled / Enabled | Enabled | -- |
Gen F Terminal / Generator PWM | Percent | Varies | Engine Electrical Section 6D |
Generator Lamp | On / Off | Off | PCM Controlled Warning Lamps |
HO2S Sen. 1 | Not Ready / Ready | Ready | DTC P0135 HO2S Heater Performance Sensor 1 |
HO2S Sen. 1 | millivolts | 0 - 1000, constantly varying | DTC P0135 HO2S Heater Performance Sensor 1 |
HO2S Sen. 2 | mIllivolts | 0 - 1000,varies | DTC P0141 HO2S Heater Performance Sensor 2 |
HO2S Warm Up Time | Min: Sec | Depends on startup intake air temperature, startup engine coolant temperature, and time to HO2S activity. | DTC P0135 HO2S Heater Performance Sensor 1 |
HO2S XCount | Counts | Varies | Information Sensors |
IAC Position | Counts | 10 - 40 | Idle Air Control System Check |
IAT | °C, °F | Varies with ambient air temperature. | Information Sensors |
Idle Speed Error | RPM | Less than 100 | Idle Air Control System Check |
Ignition 1 | Volts | 13 (Varies) | Electronic Ignition (EI) System |
Ignition Mode | IC / Bypass | IC | Electronic Ignition (EI) System |
Injector Pulse Width | milliseconds | 1.5 - 3.5 (Varies with engine load) | -- |
Knock Retard | Degrees | 0° | Knock Sensor (KS) System |
KS Active Counter / KS Activity | Yes / No | No | Knock Sensor (KS) System |
KS Minimum Learned Noise | Volts | 0.1 - 3.0 (varies) | Knock Sensor (KS) System |
KS Noise Channel | Volts | 0.1 - 3.0 (varies) | Knock Sensor (KS) System |
Long Term Fuel Trim | Percent | -10% - 10% | DTC P0172 Fuel Trim System Rich |
Loop Status | Open / Closed | Closed | Fuel Metering Modes of Operation |
Low Oil Lamp | On / Off | Off | PCM Controlled Warning Lamps |
MPH / km/h | MPH, Km/h | 0 | 4T60-E Automatic Transaxle Diagnosis |
MAF | gm/s | 3 - 6 gm/s at idle 13 - 16 gm/s at 2500 RPM (Depends on engine load and barometric pressure) | Information Sensors |
MAF Frequency | Hz | 1200 - 3000 (Depends on engine load and barometric pressure). | Information Sensors |
MAP | kPa / Volts | 29 - 48 kPa / 1 - 2 Volts (Depends on engine load and barometric pressure). | Information Sensors |
MIL | On / Off | Off | Malfunction Indicator Lamp (MIL) Inoperative |
Misfire Cur. #1-#6 | Counts | 0 - 4 | DTC P0300 Engine Misfire Detected |
Misfire Failures Since First Fail | Counts | 0 | DTC P0300 Engine Misfire Detected |
Misfire Hist. #1-#6 | Counts | 0 | DTC P0300 Engine Misfire Detected |
Misfire Passes Since First Fail | Counts | 0 | DTC P0300 Engine Misfire Detected |
Oil Level | Ok / Low | Ok | DTC P0300 Engine Misfire Detected |
Power Enrichment | Active / Inactive | Inactive | Fuel Metering Modes of Operation |
Rich/Lean | Rich / Lean | Constantly changing | Fuel Metering System Components |
Short Term Fuel Trim | Percent | -10% - 10% | DTC P0171 Fuel Trim System Lean |
Spark | Degrees | -20° (varies) | Electronic Ignition (EI) System |
Start Up ECT | °C, °F | Depends on engine coolant temperature at time of startup | -- |
Start Up IAT | °C, °F | Depends on intake air temperature at time of startup | -- |
TCC Enable | On / Off | Off | 4T60-E Transaxle Diagnosis |
Throttle at Idle | Yes / No | Yes | DTC P0123 Throttle Position (TP) Sensor Circuit High Voltage |
Total Misfire Current Count | Counts | 0 - 5 | DTC P0300 Engine Misfire Detected |
Total Misfire Failures Since First Fail - Refer to Misfire Failures Since First Fail | Counts | 0 | DTC P0300 Engine Misfire Detected |
Total Misfire Passes Since First Fail - Refer to Misfire Passes Since First Fail | Counts | 0 | DTC P0300 Engine Misfire Detected |
TP Angle | Percent | 0% | DTC P0123 Throttle Position (TP) Sensor Circuit High Voltage |
TP Sensor | Volts | 0.20 - 0.74 | DTC P0123 Throttle Position (TP) Sensor Circuit High Voltage |
Traction Control | Active / Inactive | Inactive | Section 5E2 |
Traction Control Desired Torque - Refer to Desired Torque | Percent | 80% - 95% | DTC P1571 Traction Control Torque Request Circuit |
Traction Control Torque - Refer to Delivered Torque | Percent | 5% - 20% (Varies with load) | DTC P1653 Traction Control Delivered Torque Output Circuit Section 5E2 |
Transmission Range | Park / Reverse / Neutral / Drive 4 / Drive 3 / Drive 2 / Low | Park | Information Sensors |
TR P A B C | X / 0 | 0 0 X X | Information Sensors |
Trans Hot Mode | Active / Inactive | Inactive | 4T60-E Transaxle Diagnosis |
TWC Diagnostic | Enabled / Disabled | Enabled | DTC P0420 Catalyst System Low Efficiency |
TWC Monitor Test Counter | Counts | 0 | DTC P0420 Catalyst System Low Efficiency |
TWC Protection | Active / Inactive | Inactive | DTC P0420 Catalyst System Low Efficiency |
Vehicle Speed - Refer to MPH / km/h | MPH, Km/h | 0 | 4T60-E Automatic Transaxle Diagnosis |
VTD Fuel Disable | Active / Inactive | Inactive | DTC P1626 Theft Deterrent Fuel Enable Signal Lost |
