Powertrain Control Module (PCM) - Electrical Diagnostics - 42RLE Automatic Transmission: Diagnosis RAM Pickup 2500

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Diagnostic Test

1. DETERMINING IF RELATED ENGINE TPS DTCS ARE PRESENT With the scan tool, check Engine DTCs, including pending DTCs and one trip failures. Are there any Engine TPS DTCs present? Yes Refer to the Fault Isolation service information and perform the appropriate diagnostic procedure. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go to 2 .
2. CHECK IF THE DTC IS CURRENT With the scan tool, record the Event Data to help identify the conditions in which the DTC was set. With the scan tool, erase Transmission DTCs. NOTE: Clearing DTCs does NOT erase the Event Data. To erase the Event Data you must either perform a Quick Learn procedure or battery disconnect (if available) with the scan tool, or manually disconnect the battery. Whatever method used might reset certain learned transmission values to controller defaults and may cause poor shift quality until those values are relearned. Drive the vehicle and try to duplicate the conditions in which the DTC was reported by the Event Data. With the scan tool, read Transmission DTCs. Does this DTC reset? Yes Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go to 3 .
3. CHECK THE WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. Pay particular attention to the TPS signal and sensor ground circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Check for any Service Information Tune-ups or Service Bulletins for any possible causes that may apply. Were there any problems found? Yes Repair as necessary. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. DETERMINING IF RELATED ENGINE TPS DTCS ARE PRESENT With the scan tool, check Engine DTCs, including pending DTCs and one trip failures. Are there any Engine TPS DTCs present? Yes Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 2 .
2. CHECK TO SEE IF DTC IS CURRENT With the scan tool, record the Event Data to help identify the conditions in which the DTC was set. With the scan tool, erase Transmission DTCs. NOTE: Clearing DTCs does NOT erase the Event Data. To erase the Event Data you must either perform a Quick Learn procedure, battery disconnect (if available) with the scan tool, or manually disconnect the battery. Drive the vehicle and try to duplicate the conditions in which the DTC was reported by the Event Data. With the scan tool, read Transmission DTCs. Does this DTC reset? Yes Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 3 .
3. CHECK THE WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. Pay particular attention to the TPS signal and sensor ground circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Check for any Service Information Tune-ups or Service Bulletins for any possible causes that may apply. Were there any problems found? Yes Repair as necessary. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. CHECK IF RELATED ENGINE TPS DTCS ARE PRESENT With the scan tool, check Engine DTCs, including pending DTCs and one trip failures. Are there any Engine TPS DTCs present? Yes Perform the appropriate diagnostic procedure. No Go To 2 .
2. CHECK IF THE DTC IS CURRENT With the scan tool, record the Event Data to help identify the conditions in which the DTC was set. With the scan tool, erase Transmission DTCs. NOTE: Clearing DTCs does NOT erase the Event Data. To erase the Event Data you must either perform a Quick Learn procedure or battery disconnect (if available) with the scan tool, or manually disconnect the battery. Whatever method used might reset certain learned transmission values to controller defaults and may cause poor shift quality until those values are relearned. Drive the vehicle and try to duplicate the conditions in which the DTC was reported by the Event Data. With the scan tool, read Transmission DTCs. Does this DTC reset? Yes Go To 3 . No Go To 4 .
3. CHECK THE THROTTLE POSITION SENSOR OPERATION Ignition on, engine not running. With the scan tool, under Transmission Sensors, monitor the TPS voltage in the following step. Slowly open and close the throttle while checking for erratic voltage changes. Did the TPS voltage change smooth and consistent? Yes Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Replace the Throttle Position Sensor in accordance with the Service Information. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
4. CHECK THE WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. Pay particular attention to the TPS signal and sensor ground circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Were there any problems found? Yes Repair as necessary. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. CHECK ENGINE COOLING SYSTEM Perform Engine Cooling System diagnostics in accordance with the Service Information. Is the Engine Cooling System functioning properly? Yes Go To 2 . No Repair the cause of the engine overheating. Refer to the appropriate Service Information for the related diagnostic or repair procedures. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
2. TRANSMISSION OIL COOLER RESTRICTED Check the Transmission Oil Cooler Flow in accordance with the Service Information. Is the transmission oil cooler restricted or plugged? Yes Repair the cause of the plugged Transmission Oil Cooler as necessary and repair or replace the Transmission Oil Cooler in accordance with the Service Information. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 3 .
3. HIGH TEMPERATURE OPERATION This DTC is an informational DTC designed to aid the Technician in diagnosing shift quality complaints. This DTC indicates that the transmission has been operating in the "Overheat" shift schedule which may generate a customer complaint. The customer driving patterns may indicate the need for an additional transmission oil cooler. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Check for any Service Information Tune-ups or Service Bulletins for any possible causes that may apply. Repair Repair the cause of transmission overheating in accordance with the Service Information. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. CONTROL MODULE PROGRAMMING ERROR NOTE: Controller is programmed with generic software and will not allow the correct vehicle Powertrain management. Record the controller part number. Update the controller with the correct software in accordance with the Service Information. Verify that the controller updated successfully. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. PCM - INTERNAL ERROR Repair Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. PCM - INTERNAL ERROR Repair Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. PCM - INTERNAL ERROR Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention to all power and ground circuits. Repair Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

Scheme 783

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. CHECK IF THE DTC IS CURRENT With the scan tool, perform the Shift Lever Position Test. Select the test outcome from the following: Test passes: Go To 6 . Test fails with Error Code: Go To 2 . Test fails without Error Code: Perform the Gearshift Adjustment Procedure in accordance with the Service Information. Perform the PRNDL FAULT CLEARING PROCEDURE. Refer to «PRNDL FAULT CLEARING PROCEDURE»(ref-457904-S32979718132012030200000) .
2. CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY Turn the ignition off to the lock position. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Ignition on, engine not running. With the scan tool, perform the Shift Lever Position Test. When the scan tool instructs you to put the Gear Selector in a particular position, you must do so using the selector switch on the Transmission Simulator. The LED for the gear position in question must be illuminated on the Transmission Simulator prior to pressing "ENTER" on the scan tool. NOTE: When the scan tool requests the O/D off button be depressed (if equipped) , you must use the O/D OFF button in the vehicle or you will fail the Shift Lever Position Test with an error code 11 or OD-TOW/HALL STUCK OPEN. NOTE: If the Shift Lever Position test fails, make sure to note the identification of the TRS Sense circuit for future reference. Did the Shift Lever Position test pass? Yes Remove the Oil Pan and Main Valve Body Assembly in accordance with the Service Information. Check for metal debris on top of the TRS Assembly. If debris is present, determine the cause of the debris and repair the transmission as necessary. If no problems are found, replace the Transmission TRS Assembly in accordance with the Service Information. Perform the PRNDL FAULT CLEARING PROCEDURE. Refer to «PRNDL FAULT CLEARING PROCEDURE»(ref-457904-S32979718132012030200000) No Go To 3 .
3. TRS SENSE CIRCUIT OPEN Turn the ignition off to the lock position. Disconnect the Transmission Simulator (special tool #8333A, Simulator, Transmission). Disconnect the PCM harness connectors and install the PCM PInout Box (special tool #8815A, Kit, NGC, 38 Position). CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis. Measure the resistance of the identified (T41, T42, T3, or T1) TRS Sense circuit, from the Transmission Solenoid/TRS Assembly harness connector to the appropriate terminal of the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position). Is the resistance above 5.0 Ohms? Yes Repair the identified (T41, T42, T3, or T1) TRS Sense circuit for an open. Perform the PRNDL FAULT CLEARING PROCEDURE. Refer to «PRNDL FAULT CLEARING PROCEDURE»(ref-457904-S32979718132012030200000) No Go To 4 .
4. TRS SENSE CIRCUIT SHORT TO GROUND Measure the resistance between ground and the identified (T41, T42, T3, or T1) TRS Sense circuit. Is the resistance below 5.0 Ohms? Yes Repair the identified (T41, T42, T3, or T1)TRS Sense circuit for a short to ground. Perform the PRNDL FAULT CLEARING PROCEDURE. Refer to «PRNDL FAULT CLEARING PROCEDURE»(ref-457904-S32979718132012030200000) No Go To 5 .
5. TRS SENSE CIRCUIT SHORT TO ANOTHER CIRCUIT Measure the resistance between the identified (T41, T42, T3, or T1) TRS Sense circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 100k Ohms between the identified (T41, T42, T3, or T1) TRS Sense circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the identified (T41, T42, T3, or T1) TRS Sense circuit for a short to another circuit(s). Perform the PRNDL FAULT CLEARING PROCEDURE. Refer to «PRNDL FAULT CLEARING PROCEDURE»(ref-457904-S32979718132012030200000) No Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn. Perform the PRNDL FAULT CLEARING PROCEDURE. Refer to «PRNDL FAULT CLEARING PROCEDURE»(ref-457904-S32979718132012030200000)
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wiring and connectors while checking for shorted and open circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Were there any problems found? Yes Repair as necessary. Perform the PRNDL FAULT CLEARING PROCEDURE. Refer to «PRNDL FAULT CLEARING PROCEDURE»(ref-457904-S32979718132012030200000) No Test Complete.

1. DETERMINE IF RELATED TRANSMISSION TEMPERATURE DTCS ARE PRESENT With the scan tool, check Transmission DTCs. Are there any other Transmission Temperature Sensor related DTCs present? Yes Perform the appropriate diagnostic procedure. No Go To 2 .
2. CHECK IF THE DTC IS CURRENT With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 2 or less for this DTC? Yes Go To 3 . No Go To 4 .
3. PCM AND WIRING Turn the ignition off to the lock position. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Ignition on, engine not running. With the Transmission Simulator, turn the Input/Output switch to OFF. With the scan tool, monitor the Transmission Temperature voltage while turning the Thermistor Voltage switch to all three positions on the Transmission Simulator. Compare the scan tool readings with the numbers listed on the Transmission Simulator. Do the readings on the Transmission Simulator match the scan tool readings ± 0.2 of a volt? Yes Replace Transmission Temperature Sensor (TRS Assembly) in accordance with the Service Information. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for any Service Bulletins and S.T.A.R. ON-LINE for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
4. CHECK THE WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Were there any problems found? Yes Repair as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. CHECK IF THE DTC IS CURRENT With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 2 or less for this DTC? Yes Go To 2 . No Go To 3 .
2. CHECK THE PCM AND WIRING WITH THE TRANSMISSION SIMULATOR Turn the ignition off to the lock position. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Ignition on, engine not running. With the Transmission Simulator, turn the Input/Output switch to OFF. With the scan tool , monitor the Transmission Temperature voltage while turning the Thermistor Voltage switch to all three positions on the Transmission Simulator. Compare the scan tool readings with the numbers listed on the Transmission Simulator. Do the readings on the Transmission Simulator match a non-fluctuating scan tool reading ± 0.2 of a volt? Yes Replace Transmission Solenoid/Pressure Switch Assembly in accordance with the Service Information. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for any Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
3. CHECK THE WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. With the scan tool , check the Event Data to help identify the conditions in which the DTC was set. Check for any Service Information Tune-ups or Service Bulletins for any possible causes that may apply. Were there any problems found? Yes Repair as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

Scheme 784

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. CHECK IF THE DTC IS CURRENT Start the engine. NOTE: This DTC is not a Transmission Input Speed Sensor DTC. With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter set at 0 for this DTC ? Yes Go To 2 . No Go To 3 .
2. CHECK IF ENGINE DTCS ARE PRESENT With the scan tool, read engine DTCs. Are there any engine DTCs present? Yes Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
3. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wiring and connectors while checking for shorted and open circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. Were there any problems found? Yes Repair as necessary. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. CHECK FOR RELATED TRANSMISSION DTCS With the scan tool, read Transmission DTCs. If any of these DTCs are present, perform their respective tests first. Are there any Loss of Prime, Line Pressure Sensor and/or Speed Sensor DTCs present? Yes Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. If any of these DTCs are present, they will cause a gear ratio error. Perform the test for Loss of Prime first if it is present. No Go To 2 .
2. CHECK TO SEE IF P0731 IS CURRENT With the scan tool, perform the 1st gear clutch test. Follow the instructions on the scan tool. Increase the throttle angle or TPS Degree to 30° for no more than a few seconds. CAUTION: Do not overheat the transmission. Did the Clutch Test pass, Input Speed remain at zero? Yes Go To 3 . No Repair internal Transmission as necessary. Check all of the components related to the UD and LR clutches. Inspect the Oil Pump and repair or replace as necessary. Refer to the Service Information for the proper repair procedures. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
3. CHECK FOR INTERMITTENT OPERATION The conditions to set this DTC are not current at this time. Check the gearshift linkage adjustment. Gear ratio DTCs can be set by problems in the Input and Output Speed Sensor circuits. If the vehicle passes the Clutch Test and still sets Gear Ratio DTC, check the Speed Sensors for proper operation. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Check the wiring and connectors for the Speed Sensors for a good connection, then perform a wiggle test using the Transmission Simulator. This DTC can also be set under extreme temperature conditions. This is usually caused by an internal problem. Verify if the problem is only experienced under extreme hot or cold conditions. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. Were there any problems found? Yes Repair as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. CHECK IF RELATED TRANSMISSION DTCS ARE PRESENT With the scan tool, read Transmission DTCs. If any of these DTCs are present, perform their respective tests first. Are there any Loss of Prime, Line Pressure Sensor and/or Speed Sensor DTCs present? Yes Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. If any of these DTCs are present, they will cause a gear ratio error. Perform the test for Loss of Prime first if it is present. No Go To 2 .
2. CHECK IF THE DTC IS CURRENT With the scan tool, perform the 2nd gear clutch test. Follow the instructions on the scan tool. Increase the throttle angle or TPS Degree to 30° for no more than a few seconds. CAUTION: Do not overheat the transmission. Did the Clutch Test pass, Input Speed remain at zero? Yes Go To 3 . No Go To 4 .
3. CHECK FOR INTERMITTENT OPERATION The conditions to set this DTC are not current at this time. Check the gearshift linkage adjustment. Gear ratio DTCs can be set by problems in the Input and Output Speed Sensor circuits. If the vehicle passes the Clutch Test and still sets Gear Ratio DTC, check the Speed Sensors for proper operation. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Check the wiring and connectors to the Speed Sensors for a good connection, then perform a wiggle test using the Transmission Simulator. This DTC can also be set under extreme temperature conditions. This is usually caused by an internal problem. Verify if the problem is only experienced under extreme hot or cold conditions. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Were there any problems found? Yes Repair as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.
4. CHECK FOR RELATED PRESSURE SWITCH DTCS With the scan tool, read Transmission DTCs. Are the DTCs P0845 and/or P0846 present also? Yes Replace the Transmission Solenoid/Pressure Switch Assembly in accordance with the Service Information. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Repair internal Transmission in accordance with the Service Information. Check all of the components related to the UD and 2/4 clutches. Inspect the Oil Pump and repair or replace as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. CHECK IF RELATED TRANSMISSION DTCS ARE PRESENT With the scan tool, read Transmission DTCs. If any of these DTCs are present, perform their respective tests first. Are there any Loss of Prime, Line Pressure Sensor and/or Speed Sensor DTCs present? Yes Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. If any of these DTCs are present, they will cause a gear ratio error. Perform the test for Loss of Prime first if it is present. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 2 .
2. CHECK IF THE DTC IS CURRENT With the scan tool, perform the 3rd gear clutch test. Follow the instructions on the scan tool. Increase the throttle angle or TPS Degree to 30° for no more than a few seconds. CAUTION: Do not overheat the transmission. Did the Clutch Test pass, Input Speed remain at zero? Yes Go To 3 . No Go To 4 .
3. CHECK FOR INTERMITTENT OPERATION The conditions to set this DTC are not current at this time. Check the gearshift linkage adjustment. Gear ratio DTCs can be set by problems in the Input and Output Speed Sensor circuits. If the vehicle passes the Clutch Test and still sets Gear Ratio DTC, check the Speed Sensors for proper operation. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Check the wiring and connectors for the Speed Sensors for a good connection, then perform a wiggle test using the Transmission Simulator. This DTC can also be set under extreme temperature conditions, this is usually caused by an internal problem. Verify if the problem is only experienced under extreme hot or cold conditions. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Were there any problems found? Yes Repair as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.
4. CHECK FOR RELATED PRESSURE SWITCH DTCS With the scan tool, read Transmission DTCs. Are the DTCs P0870 and/or P0871 present also? Yes Replace the Transmission Solenoid/Pressure Switch Assembly in accordance with the Service Information. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Repair internal Transmission in accordance with the Service Information. Check all of the components related to the UD and O/D clutches. Inspect the Oil Pump and repair or replace as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. CHECK IF RELATED TRANSMISSION DTCS ARE PRESENT Using the scan tool, read Transmission DTCs. If any of these DTCs are present, perform their respective tests first. Are there any Loss of Prime, Line Pressure Sensor and/or Speed Sensor DTCs present? Yes Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. If any of these DTCs are present, they will cause a gear ratio error. Perform the test for Loss of Prime first if it is present. No Go To 2 .
2. CHECK IF THE DTC IS CURRENT Using the scan tool, perform the 4th (2nd and 3rd) gear clutch test. Follow the instructions on the scan tool. NOTE: Due to that there is no actual 4th gear clutch test, to check the OD and 2/4 clutches perform the 2nd and 3rd gear clutch test. Increase the throttle angle or TPS Degree to 30° for no more than a few seconds. CAUTION: Do not overheat the transmission. Did both Clutch Test pass, Input Speed remain at zero? Yes Go To 3 . No Go To 4 .
3. CHECK FOR INTERMITTENT OPERATION The conditions to set this DTC are not current at this time. Check the gearshift linkage adjustment. Gear ratio DTCs can be set by problems in the Input and Output Speed Sensor circuits. If the vehicle passes the Clutch Test and still sets a Gear Ratio DTC, check the Speed Sensors for proper operation. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Check the wiring and connectors for the Speed Sensors for a good connection, then perform a wiggle test using the Transmission Simulator. This DTC can also be set under extreme temperature conditions, this is usually caused by an internal problem. Verify if the problem is only experienced under extreme hot or cold conditions. Using the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. Were there any problems found? Yes Repair as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.
4. CHECK FOR RELATED PRESSURE SWITCH DTCS Using the scan tool, read Transmission DTCs. Are the DTCs P0870 and/or P0871 present also? Yes Replace the Transmission Solenoid/Pressure Switch Assembly in accordance with the Service Information. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Repair internal Transmission in accordance with the Service Information. Check all of the components related to the O/D and 2/4 clutches. Inspect the Oil Pump and repair or replace as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. DETERMINING IF RELATED TRANSMISSION DTCS ARE PRESENT Using the scan tool, read Transmission DTCs. If any of these DTCs are present, perform their respective tests first. Are there any Loss of Prime, Line Pressure Sensor and/or Speed Sensor DTCs present? Yes Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. If any of these DTCs are present, they will cause a gear ratio error. Perform the test for Loss of Prime first if it is present. No Go To 2 .
2. CHECK TO SEE IF P0731 IS CURRENT Using the scan tool, perform the Reverse gear clutch test. Follow the instructions on the scan tool. Increase the throttle angle or TPS Degree to 30° for no more than a few seconds. CAUTION: Do not overheat the transmission. Did the Clutch Test pass, Input Speed remain at zero? Yes Go To 3 . No Repair internal Transmission in accordance with the Service Information. Check all of the components related to the Reverse and L/R clutches. Inspect the Oil Pump and repair or replace as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
3. CHECK FOR INTERMITTENT OPERATION The conditions to set this DTC are not current at this time. Check the gearshift linkage adjustment. Gear ratio DTCs can be set by problems in the Input and Output Speed Sensor circuits. If the vehicle passes the Clutch Test and still sets Gear Ratio DTC, check the Speed Sensors for proper operation. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Check the wiring and connectors related to the Speed Sensors for a good connection, then perform a wiggle test using the Transmission Simulator. This DTC can also be set under extreme temperature conditions, this is usually caused by an internal problem. Verify if the problem is only experienced under extreme hot or cold conditions. Using the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. Were there any problems found? Yes Repair as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. CHECK FOR RELATED DTCS With the scan tool, read DTCs. Are the DTCs P0750 and/or P0841 present also? Yes Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. No Go To 2 .
2. CHECK IF THE DTC IS CURRENT Ignition on, engine not running. With the scan tool, record and erase DTCs. Drive the vehicle until it is fully warmed up to at least 43° C (110° F). Perform the following step 3 times. Drive the vehicle at 80 km/h (50 mph) and allow 4th gear to engage for at least 10 seconds. Close the throttle, then tip back in until the throttle angle is between 25 and 29 degrees. Note that if you go over 30 degrees, you must back off of the throttle and retry. Did the TCC engage during any of the attempts? Yes Go To 3 . No Perform the Hydraulic Pressure test in accordance with the Service Information and repair the internal transmission components and Torque convertor as necessary. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
3. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wiring and connectors while checking for shorted and open circuits. This DTC can also be set under extreme temperature conditions. This is usually caused by an internal problem. Verify if the problem is only experienced under extreme hot or cold conditions. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. Were there any problems found? Yes Repair as necessary. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

Scheme 785

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. DETERMINING IF RELATED TIPM TCM POWER CONTROL CIRCUIT DTCS PRESENT With the scan tool, read TIPM DTCs. Are there any TIPM TCM Power Control Circuit DTCs present also? Yes Refer to «DIAGNOSIS AND TESTING»(ref-457926-S02344909862012030200000) and perform the appropriate diagnostic procedure. No Go To 2 .
2. CHECK FOR LOSS OF PRIME DTC With the scan tool, check for other Transmission DTCs. Is the DTC P0944 present also? Yes Perform the appropriate diagnostic procedure. No Go To 3 .
3. CHECK IF THE DTC IS CURRENT With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 2 or less for this DTC? Yes Go To 4 . No Go To 8 .
4. PCM AND WIRING Turn the ignition off to the lock position. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Ignition on, engine not running. With the Transmission Simulator, turn the Pressure Switch selector to 2/4. With the scan tool , monitor the 2/4 Pressure Switch state while pressing the Pressure Switch Test button on the Transmission Simulator. Did the 2/4 Pressure Switch state change? Yes Replace the Transmission Solenoid/Pressure Switch Assembly in accordance with the Service Information. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 5 .
5. (T47) 2/4 PRESSURE SWITCH SENSE CIRCUIT OPEN Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Transmission Solenoid/Pressure Switch Assembly harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis. Measure the resistance of the (T47) 2/4 Pressure Switch Sense circuit between the Transmission Solenoid/Pressure Switch Assembly harness connector and the appropriate terminal of the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position). Is the resistance above 5.0 Ohms? Yes Repair the (T47) 2/4 Pressure Switch Sense circuit for an open. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 6 .
6. (T47) 2/4 PRESSURE SWITCH SENSE CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (T47) 2/4 Pressure Switch Sense circuit. Is the resistance below 5.0 Ohms? Yes Repair the (T47) 2/4 Pressure Switch Sense circuit for a short to ground. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 7 .
7. (T47) 2/4 PRESSURE SWITCH SENSE CIRCUIT SHORTED TO VOLTAGE Ignition on, engine not running. With the scan tool under TIPM, actuate the Transmission. Measure the voltage of the (T47) 2/4 Pressure Switch Sense circuit. Is the voltage above 0.5 of a volt? Yes Repair the (T47) 2/4 Pressure Switch Sense circuit for a short to voltage. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
8. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Were there any problems found? Yes Repair as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

Scheme 786

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article

1. CHECK FOR TIPM TCM POWER INPUT DTCS With the scan tool under TIPM, check for TCM Power Input DTCs. Are there any TIPM TCM Power Input DTCs present? Yes Refer to «DIAGNOSIS AND TESTING»(ref-457926-S02344909862012030200000) and perform the appropriate diagnostic procedure. No Go To 2 .
2. CHECK FOR LOSS OF PRIME DTC With the scan tool, check for other Transmission DTCs. Is the DTC P0944 present also? Yes Perform the appropriate diagnostic procedure. No Go To 3 .
3. CHECK IF THE DTC IS CURRENT With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 2 or less for this DTC? Yes Go To 4 . No Go To 8 .
4. CHECK THE PCM AND WIRING USING THE TRANSMISSION SIMULATOR Turn the ignition off to the lock position. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Ignition on, engine not running. With the Transmission Simulator, turn the Pressure Switch selector to OD. With the scan tool , monitor the OD Pressure Switch state while pressing the Pressure Switch Test button on the Transmission Simulator. Did the OD Pressure Switch state change? Yes Replace the Transmission Solenoid/Pressure Switch Assembly in accordance with the Service Information. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 5 .
5. (T9) OD PRESSURE SWITCH SENSE CIRCUIT OPEN Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Transmission Solenoid/Pressure Switch Assembly harness connector. NOTE: Check connectors - Clean/repair as necessary. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis. Measure the resistance of the (T9) OD Pressure Switch Sense circuit between the Transmission Solenoid/Pressure Switch Assembly harness connector and the appropriate terminal of the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position). Is the resistance above 5.0 Ohms? Yes Repair the (T9) OD Pressure Switch Sense circuit for an open. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 6 .
6. (T9) OD PRESSURE SWITCH SENSE CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (T9) OD Pressure Switch Sense circuit. Is the resistance below 5.0 Ohms? Yes Repair the (T9) OD Pressure Switch Sense circuit for a short to ground. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 7 .
7. (T9) OD PRESSURE SWITCH SENSE CIRCUIT SHORTED TO VOLTAGE Ignition on, engine not running. With the scan tool under TIPM, actuate the Transmission. Measure the voltage of the (T9) OD Pressure Switch Sense circuit. Is the voltage above 0.5 of a volt? Yes Repair the (T9) OD Pressure Switch Sense circuit for a short to voltage. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
8. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Were there any problems found? Yes Repair as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. CHECK THE POWER AND GROUND CIRCUITS This DTC is set when the PCM is initialized while the vehicle is moving in a valid forward gear. This is usually caused by a momentary loss of power to the Transmission portion of the PCM. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller tool #(special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis. Check all of the Fused B(+), Fused Ignition Switch Output, and Ground circuits related to the PCM for an intermittent open or short to ground. Perform a wiggle test on all wiring and connectors pertaining to the PCM while looking for shorted or open circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Repair Repair as necessary. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. CHECK IF THE DTC IS CURRENT With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 2 or less for this DTC? Yes Go To 2 . No Go To 5 .
2. (T9) OD PRESSURE SIGNAL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Transmission Solenoid/Pressure Switch Assembly harness connector. Ignition on, engine not running. With the scan tool under TIPM, actuate the Transmission. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis. Measure the voltage of the (T9) OD Pressure Signal circuit. Is the voltage above 0.5 of a volt? Yes Repair the (T9) OD Pressure Signal circuit for a short to voltage. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 3 .
3. (T47) 2/4 PRESSURE SIGNAL CIRCUIT SHORTED TO VOLTAGE With the scan tool under TIPM, actuate the Transmission. Measure the voltage of the (T47) 2/4 Pressure Signal circuit. Is the voltage above 0.5 volt? Yes Repair the (T47) 2/4 Pressure Signal circuit for a short to voltage. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 4 .
4. (T50) L/R PRESSURE SIGNAL CIRCUIT SHORTED TO VOLTAGE With the scan tool under TIPM, actuate the Transmission. Measure the voltage of the (T50) L/R Pressure Signal circuit. Is the voltage above 0.5 of a volt? Yes Repair the (T50) L/R Pressure Signal circuit for a short to voltage. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
5. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wiring and connectors while checking for shorted and open circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Were there any problems found? Yes Repair as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. WORN OUT/ BURNT TRANSMISSION FLUID Turn the ignition off to the lock position. Flush the Transmission Oil Cooler and lines, replace the Transmission Oil Filter, refill with new Transmission Fluid, start the engine, and adjust the fluid in accordance with the Service Information. NOTE: The Transmission Cooler must be flushed before proceeding. Allow the engine to idle for 10 minutes, in Park. Turn the ignition off to the lock position. Again, flush the Transmission Oil Cooler and lines, replace the Transmission Oil Filter, refill with new Transmission Fluid, start the engine, and adjust the fluid in accordance with the Service Information. With the scan tool, perform a Battery Disconnect. NOTE: The Battery Disconnect (actual or with the scan tool if equipped) must be done to re-enable EMCC during an A/C Clutch engagement. NOTE: The vehicle may exhibit intermittent shudder during the first few hundred miles. The new Transmission Fluid will gradually penetrate the Torque Convertor Clutch friction material and the shudder should disappear. Erase the DTC and return the vehicle to the customer. Did the DTC reset and/or does the vehicle still shudder after a few thousand miles? Yes Replace the Torque Converter in accordance with the Service Information. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. DETERMINING IF RELATED DTCS ARE PRESENT With the scan tool, check for other transmission DTCs. Are there any other line pressure related DTCs present? Yes Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. Perform the test for P0934 and/or P0935 first if present. No Go To 2 .
2. COMPARE ACTUAL LINE PRESSURE TO DESIRED LINE PRESSURE CAUTION: Apply Parking Brake Start the engine. CAUTION: Firmly apply the brakes. With the scan tool, monitor the Line Pressure, Desired Line Pressure and the TPS degrees. While firmly applying the brakes, place the shifter in reverse, then slowly press the accelerator pedal to a TPS degree of 15°. Compare the Line Pressure reading to the Desired Line Pressure reading on the scan tool. Does the Line Pressure stay within ± 34 kPa or 5 psi of the Desired Line Pressure? No Go To 3 . Yes Go To 5 .
3. CHECK LINE PRESSURE CONNECTOR AND WIRING Ignition on, engine not running. With the scan tool, monitor the Line Pressure Sensor voltage while wiggling the wiring harness and connectors pertaining to the Line Pressure Sensor/Variable Force Solenoid Assembly. Did the voltage remain steady while wiggling the wiring harness and connectors? Yes Go To 4 . No Disconnect and properly reconnect the Line Pressure Sensor/Variable Force Solenoid Assembly connector. Inspect terminals and repair as necessary. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
4. CHECK PCM AND WIRING Turn the ignition off to the lock position. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator, Miller tool #(special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. With the Transmission Simulator select the "OFF" position on the "Input/Output Speed" switch. Ignition on, engine not running. With the scan tool, monitor the Line Pressure during the following step. With the Transmission Simulator, turn the selector switch to each of the 3 Line Pressure positions. NOTE: All three scan tool Line Pressure readings should be steady and ± 14 kPa (2.0 psi) or 0.1 volts of the reading specified on the Transmission Simulator. Did the Line Pressure read within ± 14 kPa (2.0 psi) or 0.1 volts in all three positions? Yes Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Repair internal transmission and inspect the oil pump per the Service information and replace if necessary. If no problems are found, replace the Line Pressure Sensor/Variable Force Solenoid Assembly - possible cause is the Pressure Control Solenoid is stuck. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
5. CHECK WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Where there any problems found? Yes Repair as necessary. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. CHECK IF THE DTC IS CURRENT Place the gear selector in Park. Start the engine. NOTE: The Transmission Temperature must be at least 43° C (110° F) before performing the following steps. The Transmission must be at operating temperature prior to checking pressure. Cold transmission fluid will result in higher pressure readings. Place the Transmission in Reverse. With the scan tool, observe the Transmission Pressure Switch states. Are any of the Pressure Switches closed? Yes Go To 2 . No Go To 4 .
2. INTERMITTENT OPERATION The conditions necessary to set this DTC are not present at this time. Test drive the vehicle. Allow the Transmission to shift through all gears and ranges. Was a delayed engagement and/or a no drive condition present during the test drive? Yes Go To 4 . No Go To 3 .
3. CHECK THE WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wiring while checking for shorted and open circuits. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Were there any problems found? Yes Repair as necessary. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.
4. SHIFT LEVER POSITION TEST With the scan tool, perform a Shift Lever Position test. Follow the instructions on the screen. Did the Shift Lever Position Test pass? Yes Go To 5 . No Perform the diagnostic procedure for P0706-TRANSMISSION RANGE SENSOR RATIONALITY. Refer to «P0706-TRANSMISSION RANGE SENSOR RATIONALITY»(ref-457904-S18128209932012030200000) . Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
5. CHECK FOR PLUGGED TRANSMISSION FILTER Remove the Transmission Pan and inspect the Transmission Fluid and Transmission Filter in accordance with the Service Information. Does the Transmission Oil Pan contain excessive debris and/or is the Oil Filter plugged? Yes Repair the cause of the plugged Transmission Filter. Refer to the Service Information for the proper repair procedure. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Replace the Transmission Oil Pump in accordance with the Service Information. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. CHECK IF THE DTC IS CURRENT NOTE: The vehicle must be driven to set this DTC. The transmission must be at operating temperature with the Engine rpm above 1000 rpm. This DTC is an indication of both the 2/4 and the O/D Hydraulic Pressure Switch DTCs being present. Perform the diagnostic procedures for both P0845 and P0870. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. If there are no possible causes remaining, view repair. Repair Refer to the Transmission sevice information and perform the diagnostic procedures for P0845 and P0870.

1. DETERMINING IF RELATED DTCS ARE PRESENT With the scan tool, check for other transmission DTCs. Are there any speed sensor or gear ratio DTCs present? Yes Refer to the Transmission service information and perform the appropriate symptom. No Go to Refer to 2 .
2. CHECK THE GEAR SHIFT CABLE FOR PROPER ADJUSTMENT Check the Gear shift cable adjustment per the Service Information. Also check the cable for possible binding or improperly routed. Is the Gear shift cable properly adjusted and not binding or improperly routed? Yes Go to Refer to 3 . No Adjust the Shifter Assembly per the Service Information. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
3. CHECK CUSTOMER DRIVING HABIT This DTC can be set if the customer does not move the shift lever completely into the OD position (in between gears) causing the manual valve to be in the T2 position. When this occurs, the feed port to the clutch is restricted, the transmission will declare Neutral, and this DTC will set. This DTC can also be set by simply bumping the shift lever toward Neutral while accelerating. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. If there are no possible causes remaining, view repair. Repair This DTC can be set by the shift lever in the wrong position or not completely in the OD position. Make sure the customer is properly informed. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. CHECK FOR RELATED DTCS With the scan tool, check for Transmission Line Pressure DTCs. NOTE: In order to erase this DTC you must reset (erase) the VLP Shift Counter and the Output tooth counter. This is a single procedure in the scan tool called "Clear Variable Line Pressure (VLP) counters". Repair Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. Refer to .

1. DETERMINING IF RELATED DTCS ARE PRESENT With the scan tool, check for other Transmission DTCs. Is the DTC P0841 present also? Yes Perform the appropriate diagnostic procedure. No Go To 2 .
2. CHECK IF THE DTC IS CURRENT With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 2 or less for this DTC? Yes Go To 3 . No Go To 8 .
3. PCM AND WIRING Turn the ignition off to the lock position. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Ignition on, engine not running. With the Transmission Simulator, turn the Pressure Switch selector switch to L/R. With the scan tool, monitor the L/R Pressure Switch State while pressing the Pressure Switch Test button. Did the Pressure Switch state change from open to closed when the test button was pressed? Yes Repair internal transmission as necessary in accordance with the Service Information. Inspect the Solenoid Switch Valve in accordance with the Service Information and repair or replace as necessary. If no problems are found, replace the Transmission Solenoid/Pressure Switch Assembly. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 4 .
4. (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT OPEN Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/Pressure Switch Assembly harness connector. Disconnect the PCM C4 harness connector. With the scan tool under TIPM, actuate the Transmission. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis. Using a 12-volt test light connected to ground, check all (T16) Transmission Control Relay Output circuits in the appropriate terminals of the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position). NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery. Does the test light illuminate brightly on all (T16) Transmission Control Output circuits? Yes Go To 5 . No Repair the (T16) Transmission Control Relay Output circuit for an open. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
5. (T50) L/R PRESSURE SWITCH SENSE CIRCUIT OPEN With the scan tool under TIPM, stop the Transmission actuation. Turn the ignition off to the lock position. Measure the resistance of the (T50) L/R Pressure Switch Sense circuit between the Transmission Solenoid/Pressure Switch Assembly harness connector and the appropriate terminal of the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position). Is the resistance above 5.0 Ohms? Yes Repair the (T50) L/R Pressure Switch Sense circuit for an open. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 6 .
6. (T50) L/R PRESSURE SWITCH SENSE CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (T50) L/R Pressure Switch Sense circuit. Is the resistance below 5.0 Ohms? Yes Repair the (T50) L/R Pressure Switch Sense circuit for a short to ground. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 7 .
7. (T50) L/R PRESSURE SWITCH SENSE CIRCUIT SHORTED TO VOLTAGE Ignition on, engine not running. With the scan tool under TIPM, actuate the Transmission. Measure the voltage of the (T50) L/R Pressure Switch Sense circuit. Is the voltage above 0.5 of a volt? Yes Repair the (T50) L/R Pressure Switch Sense circuit for a short to voltage. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
8. CHECK THE WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Test drive and verify if the transmission is launching in 2nd gear and/or no TCC engagement. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Are there 2nd gear launches and/or no TCC engagement? Yes Disassemble and inspect the Valve Body in accordance with the Service Information and repair or replace as necessary. If no problems are found in the Valve Body, replace the Transmission Solenoid Pressure Switch Assembly. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. DETERMINING IF RELATED DTCS ARE PRESENT With the scan tool, check for other Transmission DTCs Is the DTC P0841 present also? Yes Perform the appropriate diagnostic procedure. No Go To 2 .
2. CHECK THE EVENT DATA FOR TRS CODE TR2 With the scan tool, check the Event Data for P1776. Does the Event Data show a TRS Code of TR2? Yes This indicates the shift lever and the manual control valve were in an invalid position between Neutral and OD. Check the shifter cable for: proper adjustment, binding, friction, improper routing, or the shifter was moved in transit. Repair as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 3 .
3. CHECK IF THE DTC IS CURRENT With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 2 or less for this DTC? Yes Go To 4 . No Go To 9 .
4. CHECK THE PCM AND WIRING USING THE TRANSMISSION SIMULATOR Turn the ignition off to the lock position. Remove the Ignition Switch Feed fuse from the TIPM. CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear. WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury. Install the Transmission Simulator (special tool #8333A, Simulator, Transmission) and the Electronic Transmission Adapter kit. Ignition on, engine not running. With the Transmission Simulator, turn the Pressure Switch selector switch to L/R. With the scan tool, monitor the L/R Pressure Switch State while pressing the Pressure Switch Test button. Did the Pressure Switch state change from open to closed when the test button was pressed? Yes Go To 5 . No Go To 6 .
5. CHECK THE SOLENOID SWITCH VALVE FOR STICKING Remove the transmission oil pan and Valve body and inspect the Solenoid Switch Valve for sticking in its bore, repair or replace as necessary. NOTE: This DTC may be caused by debris lodged in the Transmission Solenoid Switch Valve bore. If debris is found, clean the valve body and reassemble the transmission in accordance with the Service Information. With the scan tool, record the Event Data for P1776 and erase DTCs. Reassemble the transmission and test drive the vehicle. Try to duplicate the original set conditions using the Event Data recorded earlier. With the scan tool, check Transmission DTCs. Did the DTC P1776 reset? Yes Replace the Transmission Solenoid Assembly in accordance with the Service Information. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
6. CHECK THE (T50) L/R PRESSURE SWITCH SENSE CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector. Disconnect the Transmission Solenoid/Pressure Switch Assembly harness connector. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis. Measure the resistance of the (T50) L/R Pressure Switch Sense circuit between the Transmission Solenoid/Pressure Switch Assembly harness connector and the appropriate terminal of the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position). Is the resistance above 5.0 Ohms? Yes Repair the (T50) L/R Pressure Switch Sense circuit for an open. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 7 .
7. CHECK THE (T50) L/R PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T50) L/R Pressure Switch Sense circuit. Is the resistance below 5.0 Ohms? Yes Repair the (T50) L/R Pressure Switch Sense circuit for a short to ground. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Go To 8 .
8. CHECK THE (T50) L/R PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO VOLTAGE Ignition on, engine not running. With the scan tool under TIPM, actuate the Transmission. Measure the voltage of the (T50) L/R Pressure Switch Sense circuit. Is the voltage above 0.5 of a volt? Yes Repair the (T50) L/R Pressure Switch Sense circuit for a short to voltage. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .
9. CHECK THE WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Test Drive the vehicle and verify if the transmission is launching in 2nd gear and/or there is no TCC engagement. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Check for any Service Information Tune-ups or Service Bulletins for possible causes that may apply. Are there 2nd gear launches and/or no TCC engagement? Yes Disassemble and inspect the Valve Body in accordance with the Service Information Inspect the Solenoid Switch Valve for sticking in its bore and repair or replace as necessary. Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Test Complete.

1. FAULT AFTER SHIFT This DTC is set along with a Gear Ratio DTC. Perform the appropriate test for the Gear Ratio DTC stored. NOTE: Check Pending DTCs or 1 trip failures if there are no Active or Stored Gear Ratio DTCs. Repair Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. MANUAL SHIFT OVERHEAT This is an informational DTC only. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set. Check the engine and transmission cooling system for proper operation. Check the Radiator Cooling Fan operation. Check the Transmission Cooling operation. Check the Transmission Fluid Level in accordance with the Service Information to verify that it is not overfilled. NOTE: Aggressive driving or driving in Low for extended periods of time will set this DTC. Repair If the Transmission Fluid is low, repair any Transmission Fluid leak as necessary and adjust the Transmission Fluid Level in accordance with the appropriate Service Information. Refer to the appropriate Service Information for the related symptoms and repair as necessary. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. ACTIVE DTC Ignition on, engine not running. With the scan tool, select view DTCs. Is the DTC Active at this time? Yes Diagnose the U0002-CAN C BUS OFF PERFORMANCE as the U0001-CAN C BUS CIRCUIT test. Refer to «U0001-CAN C BUS»(ref-457926-S37851162552012030200000) diagnostic procedure. No Refer to «STORED LOST COMMUNICATION DTCS»(ref-457934-S05707347042012030200000) diagnostic procedure.

1. ACTIVE DTC Ignition on, engine not running. With the scan tool, select view DTCs. Is the DTC Active at this time? Yes Refer to «U0100-LOST COMMUNICATION WITH ECM/PCM»(ref-457927-S23421614512012030200000) diagnostic procedure. No Refer to Refer to «STORED LOST COMMUNICATION DTCS»(ref-457934-S05707347042012030200000) diagnostic procedure.

1. ACTIVE DTC Ignition on, engine not running. With the scan tool, select view DTCs. Is the DTC Active at this time? Yes Refer to «DIAGNOSIS AND TESTING»(ref-457926-S02344909862012030200000) diagnostic procedure. No Refer to «STORED LOST COMMUNICATION DTCS»(ref-457934-S05707347042012030200000) diagnostic procedure.

Scheme 787

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

1. ACTIVE DTC Ignition on, engine not running. With the scan tool, select view TCM DTCs. Is the DTC Active at this time? Yes Refer to «U0141-LOST COMMUNICATION WITH IPM (FCM/TIPM)»(ref-457926-S24039559512012030200000) diagnostic procedure. No and perform the Stored Lost Communication DTCs diagnostic procedure. Refer to «STORED LOST COMMUNICATION DTCS»(ref-457934-S05707347042012030200000) .

1. CHECK FOR TIPM CAN BUS DTCS With the scan tool, read TIPM DTCs. Are there any TIPM CAN BUS DTCs present? Yes and perform the appropriate diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-457926-S02344909862012030200000) . No Go To 2 .
2. CHECK IF CCN DTCS ARE PRESENT With the scan tool, read CCN DTCs. Are there any CCN DTCs present? Yes and perform the appropriate diagnostic procedure. Refer to «Diagnosis and Testing»(ref-457880-S08881951252012030200000) . Perform the appropriate TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Using the schematics as a guide, check the Powertrain Control Module (PCM) pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the PCM in accordance with the Service Information. Perform the appropriate TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

1. Does the DTC P0706 reset, or do all the PRNDL indicators remain boxed in park or neutral? Yes Refer to DTC Based Diagnostics and perform the diagnostic procedure for P0706-TRANSMISSION RANGE SENSOR RATIONALITY. Refer to «P0706-TRANSMISSION RANGE SENSOR RATIONALITY»(ref-457904-S18128209932012030200000) . No Test Complete. Perform 42RLE TRANSMISSION VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) .

42RLE TRANSMISSION VERIFICATION TEST

Perform the following after completion of a diagnostic repair

Note. After completion of the Transmission Verification Test, the Powertrain Verification Test must be performed. Refer to POWERTRAIN VERIFICATION TEST .

1. Reconnect any disconnected components.
2. With the scan tool, erase all Transmission and Engine DTCs.
3. With the scan tool check pinion factor (if equipped) for proper tire identification and program or reprogram if necessary.
4. Erase DTC P0700 under engine to turn the MIL off after completion of transmission repairs.
5. Perform a PRNDL FAULT CLEARING PROCEDURE after completion of repairs for P0706-TRANSMISSION RANGE SENSOR RATIONALITY. Refer to «P0706-TRANSMISSION RANGE SENSOR RATIONALITY»(ref-457904-S18128209932012030200000) .
6. If the Powertrain Control Module or the Transmission has been repaired or replaced, it is necessary to perform the scan tool Quick Learn Procedure.
7. If the Torque converter has been replaced, with the scan tool perform TCC BREAK-IN.
8. If the Powertrain Control Module or the Totally Integrated Power Module (Front Control Module if equipped) has been replaced you must reset the Pinion Factor in the Totally Integrated Power Module (Front Control Module if equipped).
9. With the scan tool, display Transmission Temperature. Start and run the engine until the Transmission Temperature is HOT, above 43° C or 110° F.
10. Check the transmission fluid and adjust if necessary. Refer to the Service Information for the Fluid Fill procedure.
11. Road test the vehicle. With the scan tool, monitor the engine rpm. Make 15 to 20 1-2, 2-3, 3-4 upshifts. Perform these shifts from a standing start to 72 km/h (45 mph) with a constant throttle opening of 20 to 25 degrees.
12. With speeds below 40 km/h (25 mph), make 5 to 8 wide open throttle kick down to 1st gear. Allow at least five seconds each in 2nd and 3rd gear between each kickdown.
13. For a specific DTC, drive the vehicle to the Symptom's When Monitored/When Set conditions to verify the DTC is repaired.
14. If equipped with AutoStick®, upshift and downshift several times using the AutoStick® feature during the road test. NOTE: Use the OBDII task manager to run a Good Trip in each gear, this will confirm the repair and to make sure that the DTC has not re-matured.
15. Check for any Diagnostic Trouble Codes (DTCs) during and after the road test.

1. Did any Diagnostic Trouble Codes set during the road test? Yes and perform the appropriate diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-457926-S02344909862012030200000) . No Repair is complete.

42RLE - PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Perform the following steps prior to any diagnostic procedure(s).

Note. Due to different power control configurations, the Transmission Control Relay (if equipped) may be referred to as a PCM relay.

1. Many transmission symptoms can be caused by a low fluid level. If the fluid level is low, locate and repair any leaks and fill the transmission to the proper fluid level. Refer to the Service Information for the proper repair and fluid fill procedures.
2. Testing should only be performed with the battery fully charged to avoid false diagnosis.
3. With the scan tool check pinion factor (if equipped) for proper tire identification and program or reprogram if necessary.
4. With the scan tool, read Engine (PCM) DTCs. If Engine DTCs are present, perform to the appropriate diagnostic procedure(s) before proceeding.
5. With the scan tool, read Transmission (TCM) DTCs. Record all Stored, Active, and Pending DTC information. Diagnose any Pending DTC as a matured DTC.
6. With the scan tool, read Event Data. Use this data to identify the conditions in which the DTC was set. NOTE: Event Data may exist even if no DTCs are stored. Event Data is only erased by a Battery Disconnect, reflash, or QuickLearn procedure. Clearing DTCs does NOT erase the Event Data. Some DTCs require two "bad trips" before they are stored (and the MIL illuminates). The transmission may enter "limp-in" mode during the first "bad trip," but if the fault condition is not present after the vehicle is restarted, the pending DTC may be cleared without lighting the MIL. Nevertheless, the Event Data for the pending DTC will remain stored and can still be retrieved with the scan tool. If the customer reports a "limp-in" event but no DTCs are present, check the Event Data. NOTE: Performing a Battery Disconnect will clear all Event Data and reset all learned Transmission values to the controllers default values which may temporarily result in erratic shift schedules.
7. With the scan tool, perform the Shift Lever Position Test. If the test does not pass, perform the diagnostic procedure for P0706-TRANSMISSION RANGE SENSOR RATIONALITY. Refer to «P0706-TRANSMISSION RANGE SENSOR RATIONALITY»(ref-457904-S18128209932012030200000) .
8. For Gear Ratio Error DTCs, use the scan tool to read and record the Clutch Volume Index (CVI) information.
9. Use the wiring diagram as a guide, inspect the wiring and connectors related to this circuit and repair as necessary.
10. Refer to When Monitored and Set Conditions for this DTC. DTCs can set at ignition on, at start up, driving under specific conditions, and after controller diagnostic monitors have run.
11. Refer to applicable Technical Service Bulletins (TSBs) for controller software update information. Some conditions can be corrected by upgrading the Engine (PCM) or Transmission (TCM) controller software.
12. Check for any Service Information Tune-ups or Service Bulletins for any possible causes that may apply.

1. Did any of the above procedures repair the vehicle? Yes Testing is complete. Perform 42RLE VERIFICATION TEST. Refer to «42RLE TRANSMISSION VERIFICATION TEST»(ref-457904-S05238717332012030200000) . No Perform the appropriate transmission diagnostic procedure(s). Refer to «DIAGNOSIS AND TESTING»(ref-457926-S02344909862012030200000) .