Use the Tupical 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 futrther information on using the scan tool to diagnose the PCM and related sensors, refere to the applicable reference section listed below. If all values are within the typical range described below, refere 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, IC, KS, EVAP, 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 and EGR valve pintle position sensor diagnostics. Also displays parameters required to verify proper EGR system operation. |
| • | HO2S Data - Contains information specific to the Heated Oxygen Sensor diagnostics and parameters required to verify proper HO2S operation. |
| • | IPC Data - Contains information specific to the status of the instrument panel indicators and parameters required to verify proper IPC operation. |
| • | Misfire Data - Contains information specific to the misfire diagnostics and parameters required to verify proper operation with regard to misfire. |
| • | Output Driver Data - Contains information specific to the operating status of the Output Driver Modules (ODMs). |
Scan Tool Parameter | Units Displayed | Typical Data Value | Reference |
|---|---|---|---|
3X Crank Sensor | RPM | Same as engine speed, above 1280 RPM | DTC P1374 Crankshaft Position (CKP) High to Low Resolution Frequency Correlation |
24X Crank Sensor | RPM | Sam as engine speed, up to 1280 RPM | |
Abuse Management | Active / Inactive | Inactive | 4T60-E Automatic Transaxle Diagnosis |
A/C High Side | PSI | Varies with refrigerant temperature | Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis |
A/C Off For WOT | Yes / No | No | Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis |
A/C Pressure Disable | 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 | Yes / No | No (Yes with A/C ON) | Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis |
Actual EGR Position | Percent | 0% | DTC P1406 Exhaust Gas Recirculation (EGR) Position Sensor Performance |
Air/Fuel Ratio | Ratio | 14.2:1 - 14.7:1 | |
BARO | Volts / kPa | 65 - 110 (Depends on altitude and barometricpressure). | |
Brake Switch | Applied / Released | Released | 4T60-E Transaxle Diagnosis |
Cam Signal Present | Yes / No | Yes | |
Commanded A/C | On / Off | Off (On with A/C requested) | Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis |
Commanded Fuel Pump | On / Off | On | |
Commanded Gen | On / Off | On | |
Cruise Mode | On / Off | Off | |
Cruise Inhibited | Yes / No | Yes | |
Current Gear | 1 / 2 /3 / 4 | 1 | 4T60-E Automatic Transaxle Diagnosis |
Decel Fuel Mode | Active / Inactive | Inactive | |
Desired EGR Position | Percent | 0% | DTC P1406 Exhaust Gas Recirculation (EGR) Position Sensor Performance |
Desired Idle Speed | RPM | PCM commanded idle speed (varies with temperature). | |
ECT | °C, °F | 85°C - 105°C / 185°F - 220°F (varies with temperature). | |
EGR Closed Pintle Pos | Volts | 0.14-1.0 volt | DTC P1406 Exhaust Gas Recirculation (EGR) Position Sensor Performance |
EGR Duty Cycle | Percent | 0% | DTC P1406 Exhaust Gas Recirculation (EGR) Position Sensor Performance |
EGR Feedback | Volts | 0.14 - 1.0 volt | DTC P1406 Exhaust Gas Recirculation (EGR) Position Sensor Performance |
EGR Position Error | Percent | 0% - 9% | DTC P1406 Exhaust Gas Recirculation (EGR) Position Sensor Performance |
EGR Flow Test Count | Counts | 0 - 10 | DTC P1406 Exhaust Gas Recirculation (EGR) Position Sensor Performance |
Engine Load | Percent | 2% - 5% at idle 7% - 10% at 2500 RPM | Engine Load |
Engine Oil Level | OK / Low | OK | |
Engine Run Time | Hr: Min: Sec | Depends on time since startup. | Engine Run Time |
Engine Speed | RPM | ±100 RPM from Desired Idle | |
EVAP Canister Purge | Percent | 0% - 25% (varies) | |
EVAP Vacuum Switch | Purge / No Purge | No Purge (Purge if over 25% EVAP Purge PWM is commanded). | |
Fan 1 / Fan 2 | On / Off | Off (On with low speed fans running) | |
Fuel Trim Cell | Cell # | 0 | |
Fuel Trim Learn | Disabled / Enabled | Enabled | Fuel Trim Learn |
Generator Lamp | On / Off | Off | |
HO2S Bank 1 Sensor 1 | Not Ready / Ready | Ready | |
HO2S Bank 1 Sensor 1 | millivolts | 0 - 1000, constantly varying | |
HO2S Bank 1 Sensor 2 | mIllivolts | 0 - 1000,varies | |
HO2S XCount | Counts | Varies | -- |
Hot Mode | On / Off | Off | 4T60-E Transaxle Diagnosis |
IAC Position | Counts | 10 - 40 | |
IAT | °C, °F | Varies with ambient air temperature. | |
Ignition 1 | Volts | 13 (Varies) | |
IGN Bypass Mode | Active / Inactive | Inactive (Active with Ignition Control Module Controlling ignition timing) | |
IC Mode | Active / Inactive | Active (Inactive with Ignition Control Module Controlling ignition timing) | |
Injector Fault | Yes / No | No | |
Injector Pulse Width | milliseconds | 1.5 - 3.5 (Varies with engine load) | Injector Pulse Width |
KS Active Counter | Counts | 0-2 | |
KS Noise Channel | Volts | 0.1 - 3.0 (varies) | |
Knock Retard | Degrees | 0° | |
Long Term FT | Percent | -10% - 10% | |
Loop Status | Open / Closed | Closed | DTC P0125 Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control |
Low Oil Lamp | On / Off | Off | |
MAF | g/s | 3 - 6 gm/s at idle 13 - 16 gm/s at 2500 RPM (Depends on engine load and barometric pressure) | |
MAF Frequency | Hz | 1200 - 3000 (Depends on engine load and barometric pressure). | |
MAP | kPa / Volts | 25 - 48 kPa / 1 - 2 Volts (Depends on engine load and barometric pressure). | |
MIL | On / Off | Off | |
Total Misfire Failures | Counts | 0 | |
Misfire Current #1-#6 | Counts | 0 - 4 | |
Misfire History #1-#6 | Counts | 0 | |
Total Misfire Passes Since First Fail | Counts | 0 | |
Non-Volatile | Pass / Fail | Pass | -- |
Power Enrichment | Active / Inactive | Inactive | |
Short Term FT | Percent | -10% - 10% | |
Spark | Degrees | 20° (varies) | -- |
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 Engaged | Yes / No | No | 4T60-E Transaxle Diagnosis |
Total Misfire Current Count | Counts | 0 - 5 | |
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 |
Transmission Range | Park / Reverse / Neutral / Drive 4 / Drive 3 / Drive 2 / Low | Park | |
TR Switch P A B C | Low / High | Low / Low / High / High | |
TWC Diagnostic | Enabled / Disabled | Enabled | |
TWC Monitor Test Counter | Counts | 0 | |
TWC Protection | Active / Inactive | Inactive | |
Vehicle Speed | MPH, Km/h | 0 | 4T60-E Automatic Transaxle Diagnosis |
VTD Fuel Disable | Active / Inactive | Inactive |
