The values below represent a typical display recorded from a properly functioning system.
Important: Do not use a scan tool that displays faulty data. Report the condition to the scan tool manufacturer. The use of a faulty scan tool can result in misdiagnosis and the unnecessary replacement of parts.
Only the parameters listed below are used in this manual for diagnosing. If a scan tool displays other parameters, the values are not recommended by General Motors for use in diagnosis.
Scan tool values below were recorded under the following conditions:
• | Engine at idle |
• | Upper radiator hose hot |
• | Closed throttle |
• | Transmission in Park |
• | Closed Loop operation |
• | Accessories OFF |
• | Brake pedal not applied |
Scan Tool Parameter | Data List | Units Displayed | Typical Data Value | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
TP Angle | F0, F1, F2 | percent | 0 | ||||||||
Brake Switch | F0, F1, F2 | Applied, Released | Released | ||||||||
Commanded Gear | F0, F1, F2, F3 | 1, 2, 3, 4, 5 | 1 | ||||||||
Cruise | F0 | Enabled, Disabled | Disabled | ||||||||
ECT | F0, F1, F2 | °C (°F) | 85-105°C (185-220°F) | ||||||||
Engine Run Time | F0, F2 | hours:minutes:seconds | Varies | ||||||||
Engine Speed | F0, F1, F2 | RPM | 660-680 | ||||||||
Engine Torque | F0, F1, F2 | N·m (lb ft) | 8-12 (6-9) | ||||||||
Gear Ratio | F0, F1, F2, F3 | Ratio | Varies | ||||||||
Ignition Voltage | F0, F2, F3 | Volts | 12.6-14.0 | ||||||||
Last 1-2 Shift Status | F2 | Good, Flare, Tie-Up, Short, Long, Inconclusive | Inconclusive, Good | ||||||||
Last 2-1 Shift Status | F2 | Good, Flare, Tie-Up, Short, Long, Inconclusive | Inconclusive, Good | ||||||||
Last 2-3 Shift Status | F2 | Good, Flare, Tie-Up, Short, Long, Inconclusive | Inconclusive, Good | ||||||||
Last 2-4 Shift Status | F2 | Good, Flare, Tie-Up, Short, Long, Inconclusive | Inconclusive, Good | ||||||||
Last 3-2 Shift Status | F2 | Good, Flare, Tie-Up, Short, Long, Inconclusive | Inconclusive, Good | ||||||||
Last 3-4 Shift Status | F2 | Good, Flare, Tie-Up, Short, Long, Inconclusive | Inconclusive, Good | ||||||||
Last 4-2 Shift Status | F2 | Good, Flare, Tie-Up, Short, Long, Inconclusive | Inconclusive, Good | ||||||||
Last 4-3 Shift Status | F2 | Good, Flare, Tie-Up, Short, Long, Inconclusive | Inconclusive, Good | ||||||||
Last 4-5 Shift Status | F2 | Good, Flare, Tie-Up, Short, Long, Inconclusive | Inconclusive, Good | ||||||||
Last 5-4 Shift Status | F2 | Good, Flare, Tie-Up, Short, Long, Inconclusive | Inconclusive, Good | ||||||||
Line PC Sol. Actual Current | F0, F3 | Amps | 0.96 | ||||||||
Line PC Sol. CKT Status | F0, F3 | OK, Open/Short to Volts, Short to GND | OK | ||||||||
Line PC Sol. Duty Cycle | F0, F2, F3 | percent | 56-57 | ||||||||
Line PC Sol. Ref. Current | F0, F3 | Amps | 0.96 | ||||||||
Shift PC Sol. Actual Current | F0, F3 | Amps | 0.29 | ||||||||
Shift PC Sol. CKT Status | F0, F3 | OK, Open/Short to Volts, Short to GND | OK | ||||||||
Shift PC Sol. Duty Cycle | F0, F2, F3 | percent | 19 | ||||||||
Shift PC Sol. Ref. Current | F0, F3 | Amps | 0.29 | ||||||||
Shift Solenoid 1 | F0, F2, F3 | On, Off | Off | ||||||||
Shift Solenoid 1 CKT Status | F0, F3 | OK, Open/Short to Volts, Short to GND | OK | ||||||||
Shift Solenoid 2 | F0, F2, F3 | On, Off | Off | ||||||||
Shift Solenoid 2 CKT Status | F0, F3 | OK, Open/Short to Volts, Short to GND | OK | ||||||||
Shift Solenoid 3 | F0, F2, F3 | On, Off | Off | ||||||||
Shift Solenoid 3 CKT Status | F0, F3 | OK, Open/Short to Volts, Short to GND | OK | ||||||||
Shift Solenoid 4 | F0, F1, F2, F3 | On, Off | Off | ||||||||
Shift Sol. 4 CKT Status | F0, F1, F3 | OK, Open/Short to Volts, Short to GND | OK | ||||||||
Shift Solenoid 5 | F0, F2, F3 | On, Off | Off | ||||||||
Shift Solenoid 5 CKT Status | F0, F3 | OK, Open/Short to Volts, Short to GND | OK | ||||||||
TCC PC Sol. Actual Current | F0, F1, F3 | Amps | 0.20 | ||||||||
TCC PC Sol. CKT Status | F0, F1, F3 | OK, Open/Short to Volts, Short to GND | OK | ||||||||
TCC PC Sol. Duty Cycle | F0, F1, F2, F3 | percent | 14 | ||||||||
TCC PC Sol. Ref. Current | F0, F1, F3 | Amps | 0.20 | ||||||||
TCC Slip Speed | F0, F1, F2 | RPM | 20-40 | ||||||||
TR Sw. | F0, F2 | Park, Reverse, Neutral, Drive, Intermediate, Low, Invalid | Park | ||||||||
TR Sw. A/B/C/P | F0, F2 | HI, LOW | HI LOW LOW HI | ||||||||
Trans. Fluid Temp. | F0, F1, F2 | °C (°F) | Varies | ||||||||
Trans. Oil Life | F0, F1 | percent | Varies | ||||||||
Trans. Protection Mode | F0, F1, F2, F3 | OFF, ON | OFF | ||||||||
Transmission Hot Mode | F0, F1, F2 | OFF, ON | OFF | ||||||||
Transmission ISS | F0, F1, F2 | RPM | 600-700 | ||||||||
Transmission OSS | F0, F1, F2 | RPM | 0 | ||||||||
Vehicle Speed | F0, F1, F2 | km/h (mph) | 0 | ||||||||
|
The values below represent a typical display recorded from a properly functioning system.
Important: Do not use a scan tool that displays faulty data. Report the condition to the scan tool manufacturer. The use of a faulty scan tool can result in misdiagnosis and the unnecessary replacement of parts.
Only the parameters listed below are used in this manual for diagnosing. If a scan tool displays other parameters, the values are not recommended by General Motors for use in diagnosis.
Scan tool values below were recorded under the following conditions:
• | Engine at idle |
• | Upper radiator hose hot |
• | Closed throttle |
• | Transmission in Park |
• | Closed Loop operation |
• | Accessories OFF |
• | Brake pedal not applied |
Scan Tool Parameter | System State | Expected Value | Description |
---|---|---|---|
Accelerator Pedal Position Sensor | - | 0 - 100% | This parameter displays the Accelerator Pedal Position Signal in percentage. |
Active Shift Mode | Economy Medium Sports Uphill Curve 1 Uphill Curve 2 Downhill Curve 1 Manual Shifting Winter Invalid | - | This parameter displays the Active Shift Modes. |
Actual Current Line Pressure Control Solenoid | - | mA | This parameter displays the actual reference current flow of the line pressure control (PC) solenoid valve circuit. The scan tool displays current flow in mAmps |
Actual Current Shift Pressure Control Solenoid | - | mA | This parameter displays the actual reference current flow of the shift pressure control (PC) solenoid valve circuit. The scan tool displays current flow in mAmps. |
Actual Current TCC Control Solenoid (Torque Converter Clutch) | - | mA | This parameter displays the actual reference current flow of the torque converter clutch (TCC) lock up pressure control (PC) solenoid valve circuit. The scan tool displays current flow in mAmps. |
Actual Gear | 1 2 3 4 5 Not Allowed R N P Fault Shifting Active | - | This parameter displays the actual gear selected. |
AT Input Speed (Automatic Transmission) | - | RPM | This parameter displays the input speed signal of the transmission input speed sensor in RPM. |
AT Oil Temperature (Automatic Transmission) | - | °C | This parameter displays the input signal of the transmission fluid temperature sensor. |
AT Output Speed (Automatic Transmission) | - | RPM | This parameter displays the output speed signal of the transmission output speed sensor in RPM. |
Commanded Current Line Pressure Control Solenoid | - | mA | This parameter displays the commanded reference current flow of the line pressure control (PC) solenoid valve circuit. The scan tool displays current flow in mAmps |
Commanded Current Shift Pressure Control Solenoid | - | mA | This parameter displays the commanded reference current flow of the shift pressure control (PC) solenoid valve circuit. The scan tool displays current flow in mAmps. |
Commanded Current TCC Control Solenoid (Torque Converter Clutch) | - | mA | This parameter displays the commanded reference current flow of the torque converter clutch (TCC) lock up pressure control (PC) solenoid valve circuit. The scan tool displays current flow in mAmps. |
Duty Cycle Line Pressure Control Solenoid | - | % | This parameter displays the commanded state of the line pressure control (PC) solenoid valve. The scan tool displays the percentage of the PC solenoid valve energized On time. |
Duty Cycle Shift Pressure Control Solenoid | - | 0 - 100% | This parameter displays the commanded state of the shift pressure control (PC) solenoid valve. The scan tool displays the percentage of the shift PC solenoid valve energized ON time. |
Emergency Mode | Inactive Active | - | This parameter displays the emergency mode. |
Engine Speed | - | RPM | This parameter displays the rotational speed of the engine expressed as revolutions per minute. |
Engine Torque | - | Nm | This parameter displays a calculated value based on engine load, throttle position, mass air flow, and other engine inputs. |
Line Pressure Control Solenoid | - | kPa | This parameter displays the actual line pressure in kpa. |
Shift Pressure Control Solenoid | - | kPa | This parameter displays the actual shift pressure in kpa. |
Shift Solenoid Valve 1 Status | Inactive Active | Inactive Active | This parameter displays the commanded state of the Shift solenoids Inactive or Active. |
Shift Solenoid Valve 2 Status | Inactive Active | ||
Shift Solenoid Valve 3 Status | Inactive Active | ||
Shift Solenoid Valve 4 Status | Inactive Active | ||
Shift Solenoid Valve 5 Status | Inactive Active | ||
System Voltage | On Off | Battery Voltage | This parameter displays 0 to 30 Volts. The voltage measured between the module’s battery positive voltage circuit and ground circuit. |
TCC Duty Cycle | - | 0 - 100% | This parameter displays the commanded On time of the torque converter clutch (TCC) solenoid valve. The scan tool displays On time in percentage. A reading of 100 percent represents an energized, commanded On state. A reading of 0 percent represents a non-energized commanded OFF state. |
'TCC Lock Up Control Solenoid (Torque Converter Clutch) | - | kPa | This parameter displays the TCC lock up control solenoid in kpa. |
TCC Slip Speed (Torque Converter Clutch) | - | RPM | This parameter displays the difference between transmission input speed and engine speed. A negative value indicates the engine speed is less than the input speed, deceleration. A positive value indicates the engine speed is greater than the input speed, acceleration. A value of zero indicates the engine speed is equal to the input speed, TCC applied. |
Torque Converter Clutch Status | Disengaged Engaging Engaged Disengaging | - | This parameter displays the commanded state of the torque converter clutch status. |
TR Switch A (Transmission Range) | High 12V Low 0V | - | This parameter displays the status of the four inputs from the transmission range switch. The scan tool displays HI/LOW. HI indicates an ignition voltage input to the control module. LOW indicates a zero voltage input to the control module. |
TR Switch B (Transmission Range) | High 12V Low 0V | - | |
TR Switch C (Transmission Range) | High 12V Low 0V | - | |
TR Switch P (Transmission Range) | High 12V Low 0V | - | |
TR Switch Signal (Transmission Range) | Invalid | - | This parameter displays the status of the four inputs from the transmission range switch. The scan tool displays Valid or Invalid. If a valid combination of inputs is not detected, invalid will be displayed. |
Transmission Range (TR) | Park Reverse Neutral Drive 1, 2, 3, 4, 5 | - | This parameter displays the decoded status of the four A/B/C/P inputs from the transmission range switch. The scan tool displays Park, Reverse, Neutral, Drive 1,2,3,4,5. |
Vehicle Speed | - | km/h (mph) | This parameter displays the speed at which the vehicle is traveling. The scan tool displays vehicle speed as kilometers per hour (km/h), (miles per hour (MPH)). |