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K71 Transmission Control Module: Scan Tool Information (8L45/8L90)

K71 Transmission Control Module Scan Tool Parameters

Parameter Ignition = On - Cold Ignition On - Engine Running - Operating temperature 48 km/h (30 MPH) 80 km/h (50 MPH) Display Units
9V Reference 1 Circuit Status OK OK OK OK Not Run / OK / Malfunction
9V Reference 2 Circuit Status OK OK OK OK Not Run / OK / Malfunction
Calculated Line Pressure 550 to 620 kPa (80 to 90 PSI) 550 to 620 kPa (80 to 90 PSI) 380 to 480 kPa (55 to 70 PSI) 380 to 480 kPa (55 to 70 PSI) kPa (PSI)
Calculated Throttle Position 0 % 0 % 8 % 10 % %
Control Module Voltage Greater than 11 V 12 to 15 V 12 to 15 V 12 to 15 V Voltage
Driver Shift Control Mode Inactive Inactive Inactive Inactive Active / Inactive
Driver Shift Request Inactive Inactive Inactive Inactive Inactive / Upshift / Downshift
Engine Coolant Temperature 21°C (70°F) 80 to 95°C (175 to 205°F) 80 to 95°C (175 to 205°F) 80 to 95°C (175 to 205°F) °C (°F)
Engine Speed 0 RPM 575 RPM 1080 RPM 1180 RPM RPM
Engine Torque 0 N.m (0 lb ft) 4 N.m (2.95 lb ft) 53 N.m (39 lb ft) 75 N.m (55 lb ft) N.m (lb ft)
Gear Command 1 1 6 8 Park / Reverse / Neutral / Drive / 1-8
Gear Ratio 8.00:1 8.00:1 1.00:1 0.65:1 Gear Ratio
High Side Driver 1 Circuit High Voltage Test Status OK OK Not Run Not Run Not Run / OK / Malfunction
High Side Driver 2 Circuit High Voltage Test Status OK OK Not Run Not Run Not Run / OK / Malfunction
High Side Driver 1 Circuit Low Voltage Test Status Not Run OK Not Run Not Run Not Run / OK / Malfunction
High Side Driver 2 Circuit Low Voltage Test Status Not Run OK Not Run Not Run Not Run / OK / Malfunction
High Side Driver 1 Circuit Open Test Status Not Run Not Run Not Run Not Run Not Run / OK / Malfunction
High Side Driver 2 Circuit Open Test Status Not Run Not Run Not Run Not Run Not Run / OK / Malfunction
Ignition 1 Signal ON ON ON ON ON / OFF
Ignition Accessory Signal ON ON ON ON ON / OFF
Ignition Voltage Greater than 11 V 12 to 15 V 12 to 15 V 12 to 15 V Voltage
Internal Mode Switch A/B/C/P/S Low High Low High High Low High Low High High Low High High Low Low Low High High Low Low High / Low
Internal Mode Switch A 1.90 V 1.90 V 1.90 V 1.90 V Voltage
Internal Mode Switch A Status Valid Valid Valid Valid Valid / Invalid
Internal Mode Switch B 0.78 V 0.78 V 0.78 V 0.78 V Voltage
Internal Mode Switch B Status Valid Valid Valid Valid Valid / Invalid
Internal Mode Switch C 1.84 V 1.84 V 0.78 V 0.78 V Voltage
Internal Mode Switch C Status Valid Valid Valid Valid Valid / Invalid
Internal Mode Switch P 0.80 V 0.80 V 1.90 V 1.90 V Voltage
Internal Mode Switch P Status Valid Valid Valid Valid Valid / Invalid
Internal Mode Switch S 0.80 V 0.80 V 1.90 V 1.90 V Voltage
Internal Mode Switch S Status Valid Valid Valid Valid Valid / Invalid
Internal Mode Switch Park Park Drive Drive Park / Neutral / Drive
ISS/OSS Supply Voltage OK OK OK OK OK / Malfunction
Power Mode Run Run Run Run OFF / Accessory / Run
TCC Slip Speed 0 RPM 20 RPM 60 RPM 60 RPM RPM
TCC Pressure Control Solenoid Valve Pressure Command 0 kPa (0 PSI) 0 kPa (0 PSI) 175 kPa (25 PSI) 175 kPa (25 PSI) kPa (PSI)
Transmission Control Solenoid Valve 1 Pressure Command 0 kPa (0 PSI) 160 kPa (25 PSI) 100 kPa (15 PSI) 80 kPa (10 PSI) kPa (PSI)
Transmission Control Solenoid Valve 2 Pressure Command 0 kPa (0 PSI) 0 kPa (0 PSI) 1640 kPa (240 PSI) 0 kPa (0 PSI) kPa (PSI)
Transmission Control Solenoid Valve 3 Pressure Command 0 kPa (0 PSI) 1530 kPa (220 PSI) 7 kPa (1 PSI) 0 kPa (0 PSI) kPa (PSI)
Transmission Control Solenoid Valve 4 Pressure Command 0 kPa (0 PSI) 0 kPa (0 PSI) 1640 kPa (240 PSI) 1640 kPa (240 PSI) kPa (PSI)
Transmission Control Solenoid Valve 5 Pressure Command 0 kPa (0 PSI) 760 kPa (110 PSI) 0 kPa (0 PSI) 760 kPa (110 PSI) kPa (PSI)
Transmission Control Solenoid Valve 8 Off Off On On On/Off
Transmission Control Solenoid Valve 9 Off Off On On On/Off
Transmission Control Solenoid Valve 1-9 Control Circuit High Voltage Test Status Not Run OK OK OK Not Run / OK / Malfunction
Transmission Control Solenoid Valve 1-9 Control Circuit Low Voltage Test Status Not Run OK OK OK Not Run / OK / Malfunction
Transmission Control Solenoid Valve 1-9 Control Circuit Open Test Status Not Run OK OK OK Not Run / OK / Malfunction
Transmission Fluid Temperature 21°C (70°F) 46 to 82°C (115 to 180°F) 46 to 82°C (115 to 180°F) 46 to 82°C (115 to 180°F) °C (°F)
Transmission Hot Mode No No Yes Yes No / Yes
Transmission Intermediate Speed Sensor 0 RPM 0 RPM 1025 RPM 1735 RPM RPM
Transmission ISS 0 RPM 565 RPM 1025 RPM 1125 RPM RPM
Transmission OSS 0 RPM 0 RPM 1025 RPM 1735 RPM RPM
Up and Down Shift Switch 2 Inactive Inactive Inactive Inactive Inactive / Upshift / Downshift
Vehicle Speed Sensor 0 km/h (0 MPH) 0 km/h (0 MPH) 48 km/h (30 MPH) 80 km/h (50 MPH) km/h (MPH)
K71 Transmission Control Module Scan Tool Control Functions

Control Function Description
High Side Driver 1 Command Allows command of the high side driver 1 (ON or OFF).
High Side Driver 2 Command Allows command of the high side driver 2 (ON or OFF).
Line Pressure Command Allows command of the Line Pressure solenoid. (Increase / Decrease).
Shift Transmission Gear Command Allows upshift/downshift of the transmission between all gears - if the operating conditions allow a shift to occur (does not cause engine overspeed / underspeed).
Transmission Control Solenoid Valve 1-7 Current Command Allows command of the transmission solenoids 1-7 (electrical current range 0-1.2 amps).
Transmission Control Solenoid Valve 1-7 Allows command of the solenoid valve 1-7 (OFF or ON).
Transmission Control Solenoid Valve 8-9 Allows command of the solenoid valve 8-9 (OFF or ON).