545RFE Automatic Transmission - Electrical Diagnostics: Other Jeep Commander I

Monitor Conditions

1. When Monitored: Continuously with the ignition on and engine running.

Set Conditions

1. Set Condition: This DTC will set if the monitored TPS voltage drops below .078 volts for the period of 0.48 seconds.

Possible Causes

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on and engine running.

1. Set Condition: This DTC will set if the monitored TPS voltage rises above 4.94 volts for the period of 0.48 seconds.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on and engine running.

1. Set Condition: This DTC will set if the monitored TPS throttle angle between the angles of 6° and 120° and the degree change is greater than 5° within a period of less than 7.0 msec.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Whenever the engine is running.

1. Set Condition: Immediately after a Overheat shift schedule is activated when the Transmission temperature exceeds 127° C or 260° F.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: With the engine running and the PCM has closed the Transmission Control Relay.

1. Set Condition: If the battery voltage of the Transmission Control Relay Output Sense circuit(s) to the PCM is less than 10.0 volts for the period of 15 seconds. Note: P0562 generally indicates a gradually falling battery voltage or a resistive connection(s) to the PCM. The DTC will also set if the battery voltage sensed at the PCM is less than 6.5-volts for 200ms or where Transmission Control Relay Output circuits are less than 7.2-volts for 200ms.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 346

Scheme 347

Scheme 348

1. 1) RELATED CHARGING SYSTEM DTCS With the scan tool, read the Engine DTCs. Are there any related Charging System DTCs also present? Yes Refer to the appropriate Engine ELECTRICAL DIAGNOSTICS article and repair any Engine Charging System DTCs, before testing DTC P0562. NOTE: After repairing the Engine Charging System DTCs, perform the Transmission Verification test to verify the transmission was not damaged. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 2) .
2. 2) CONDITION P0562 PRESENT NOTE: Generator, battery, and charging system must be fully functional before performing this test. With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 0 for this DTC? Yes Go to 3) . No Go to 7) .
3. 3) CHECK THE (Z908, Z977) GROUND CIRCUITS Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector and connect Miller tool #8815. 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 Miller tool #8815 to perform diagnosis. Using a 12-volt test light connected to 12-volts, check the PCM (Z908, Z977) Ground circuits at the appropriate terminals of Miller tool #8815. 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 for the PCM (Z908, Z977) Ground circuits? Yes Go to 4) . No Repair the (Z908, Z977) Ground circuit(s) for an open or high resistance. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
4. 4) CHECK THE (A104) FUSED B(+) CIRCUIT Remove the Transmission Control Relay. Ignition on, engine not running. Using a 12-volt test light connected to ground, check the (A104) Fused B(+) circuit at the Transmission Control Relay connector. Does the test light illuminate brightly? Yes Go to 5) . No Repair the (A104) Fused B(+) circuit for an open or high resistance. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
5. 5) CHECK THE (T16) TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT Turn the ignition off to the lock position. NOTE: Check connectors - Clean/repair as necessary. Connect a jumper wire between (A104) Fused B(+) circuit and the (T16) Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Using a 12-volt test light connected to ground, check all (T16) Transmission Control Relay Output circuits at the appropriate terminals of Miller tool #8815. Does the test light illuminate brightly? Yes Go to 6) . No Repair the (T16) Transmission Control Relay Output circuit for an open or high resistance. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
6. 6) CHECK THE TRANSMISSION CONTROL RELAY Turn the ignition off to the lock position. Reconnect all previously disconnected connectors. Install a substitute Relay in place of the Transmission Control Relay. Start the engine. Using a voltmeter, measure the vehicles battery voltage. With the scan tool, monitor the Transmission Switched Battery Voltage. Compare the scan tool Transmission Switched Battery voltage to the actual battery voltage reading on the voltmeter. Is the scan tool voltage within 1.0 volt of the battery voltage? Yes Replace the Transmission Control Relay. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
7. 7) 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 «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Check for generic software is made at power-up

1. Set Condition: If generic software is found, the MIL will light immediately. This DTC is designed to inform the technician that the controller still has generic software installed.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: One time after the controller is reset (ignition turned to the RUN position).

1. Set Condition: Whenever the Powertrain Control Module (PCM) detects an internal controller problem.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: One time after the controller is reset (ignition turned to the RUN position).

1. Set Condition: Whenever the Powertrain Control Module (PCM) detects an internal controller problem.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: 1) One time after the controller is reset (ignition turned to the RUN position) and every 60 seconds thereafter. The Delay Test is executed after a reset only. 2) 2 seconds after an invalid test.

1. Set Condition: If either of the following conditions occur 3 times: 1) The watchdog fault line remains high after the period has elapsed for the too early - too late watchdog test. 2) The Transmission Control Relay remains on after the watchdog delay expired.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on.

1. Set Condition: The DTC will set if the controller detects an invalid PRNDL code which lasts for more than 0.042 seconds.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

SHIFT LEVER ERROR CODES

TRS SWITCH STATES

1. When Monitored: Continuously with the ignition on and engine running.

1. Set Condition: This DTC will set when the desired transmission temperature does not reach a normal operating temperature within a given time frame. Time is variable due to ambient temperature. Approximate times are starting temperature to warm up time: (-40° F / -40° C - 35 min) (-20° F / -28° C - 25 min) (20° F / -6.6° C - 20 min) (60° F / 15.5° C - 10 min)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on and engine running.

1. Set Condition: The DTC will set when the monitored Temperature Sensor voltage drops below 0.078 volts for the period of 0.45 seconds.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 349

1. 1) CHECK IF RELATED DTCS ARE PRESENT With the scan tool, read DTCs. Are there any line pressure or throttle position sensor DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
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 5) .
3. 3) CHECK THE TRANSMISSION TEMPERATURE SENSOR Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. NOTE: Check connectors - Clean/repair as necessary. 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 volts? Yes Replace Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 4) .
4. 4) CHECK THE (T54) TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM C4 harness connector and connect Miller tool #8815. 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 #8815 to perform diagnosis. Measure the resistance between ground and the (T54) Transmission Temperature Sensor Signal circuit. Is the resistance below 5.0 ohms? Yes Repair the (T54) Transmission Temperature Sensor Signal circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
5. 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. Were there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Continuously with the ignition on and engine running.

1. Set Condition: The DTC will set when the monitored Temperature Sensor voltage rises above 4.94 volts for the period of 0.45 seconds.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 350

1. 1) CHECK FOR RELATED DTCS With the scan tool, read DTCs. Are there any line pressure or throttle position sensor DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate diagnostic procedure(s). No Go to 2) .
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 5) .
3. 3) CHECK THE TRANSMISSION TEMPERATURE SENSOR Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. 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 volts? Yes Replace Transmission Solenoid/TRS Assembly per the Service Information. Refer to «REMOVAL»(ref-288312-S06385676602008062000000) . Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 4) .
4. 4) CHECK THE (T54) TRANSMISSION SENSOR SIGNAL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM harness connectors. Measure the resistance between the (T54) Transmission Temperature Sensor Signal circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T54) Transmission Temperature Sensor Signal circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the Transmission Temperature Sensor Signal circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
5. 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. Were there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Continuously with the ignition on and engine running.

1. Set Condition: The DTC will set when the monitored Temperature Sensor voltage fluctuates or changes abruptly within a predetermined period of time.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: The transmission gear ratio is monitored continuously while the transmission is in gear.

1. Set Condition: If there is an excessive change in input RPM in any gear. This DTC can take up to five minutes of problem identification before illuminating the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 351

Scheme 352

Scheme 353

Scheme 354

Scheme 355

Scheme 356

1. 1) CHECK IF DTC IS CURRENT Start the engine in park. With the scan tool, monitor the Input Speed Sensor RPM. Is the Input Speed Sensor RPM below 400 RPM? Yes Go to 2) . No Go to 9) .
2. 2) CHECK THE INPUT SPEED SENSOR Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the Transmission Simulator, set the selector switch to 3000/1000 and the Input/Output switch to ON. With the scan tool, monitor the Input and Output Speed Sensor RPM. Does the Input speed read 3000 RPM and the Output speed read 1000 RPM ± 50 RPM? Yes Replace the Input Speed Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 3) .
3. 3) CHECK THE (T52) INPUT SPEED SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector and connect Miller tool #8815. NOTE: Make sure to leave the Speed Sensor, Transmission Solenoid/TRS Assembly, and Line Pressure Sensor harness connectors disconnected. 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 #8815 to perform diagnosis. Remove the Transmission Control Relay. Place a jumper wire between the (A104) Fused B(+) circuit and the (T16) Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the (T52) Input Speed Sensor Signal circuit. Is the voltage above 0.5 volts? Yes Repair the (T52) Input Speed Sensor Signal circuit for a short to voltage. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 4) .
4. 4) CHECK THE (T13) SPEED SENSOR GROUND CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (T13) Speed Sensor Ground circuit. Is the voltage above 0.5 volts? Yes Repair the (T13) Speed Sensor Ground circuit for a short to voltage. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 5) .
5. 5) CHECK THE (T52) INPUT SPEED SENSOR SIGNAL CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the jumper wire between the (A104) Fused B(+) circuit and the (T16) Transmission Control Relay Output circuit in the Transmission Control Relay connector. Measure the resistance of the (T52) Input Speed Sensor Signal circuit between the Input Speed Sensor harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T52) Input Speed Sensor Signal circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 6) .
6. 6) CHECK THE (T13) SPEED SENSOR GROUND CIRCUIT FOR AN OPEN Measure the resistance of the (T13) Speed Sensor Ground circuit between the Input Speed Sensor harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T13) Speed Sensor Ground circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK THE (T52) INPUT SPEED SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the Input Speed Sensor Signal circuit. Is the resistance below 5.0 ohms? Yes Repair the (T52) Input Speed Sensor Signal circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 8) .
8. 8) CHECK THE (T13) SPEED SENSOR GROUND CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T13) Speed Sensor Ground circuit. Is the resistance below 5.0 ohms? Yes Repair the (T13) Speed Sensor Ground circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
9. 9) 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. Were there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: The transmission gear ratio is monitored continuously while the transmission is in gear.

1. Set Condition: If there is an excessive change in output RPM in any gear. This DTC can take up to five minutes of problem identification before illuminating the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 357

Scheme 358

Scheme 359

1. 1) CHECK IF THE DTC IS CURRENT Turn the ignition off to the lock position. CAUTION: Properly support the vehicle and raise all drive wheels off the ground. Release the parking brake. Start the engine in park. Place the transmission gear selector in drive, release foot from brake. WARNING: Be sure to keep hands and feet clear of rotating wheels. With the scan tool, monitor the Output Speed Sensor RPM. Is the Output Speed Sensor RPM below 100 RPM? Yes Go to 2) . No Go to 9) .
2. 2) CHECK THE OUTPUT SPEED SENSOR Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the Transmission Simulator, set the selector switch to 3000/1000 and the Input/Output switch to ON. With the scan tool, monitor the Input and Output Speed Sensor RPM Does the Input Speed read 3000 RPM and the Output Speed read 1000 RPM (± 50 RPM)? Yes Replace the Output Speed Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 3) .
3. 3) CHECK THE (T14) OUTPUT SPEED SENSOR SIGNAL CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM harness connectors and connect Miller tool #8815. 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 #8815 to perform diagnosis. Measure the resistance of the (T14) Output Speed Sensor Signal circuit from the Output Speed Sensor harness connector to the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T14) Output Speed Sensor Signal circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 4) .
4. 4) CHECK THE (T13) SPEED SENSOR GROUND CIRCUIT FOR AN OPEN Measure the resistance of the (T13) Speed Sensor Ground circuit from the Output Speed Sensor harness connector to the appropriate terminal in Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T13) Speed Sensor Ground circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 5) .
5. 5) CHECK THE (T14) OUTPUT SPEED SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T14) Output Speed Sensor Signal circuit. Is the resistance below 5.0 ohms? Yes Repair the (T14) Output Speed Sensor Signal circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 6) .
6. 6) CHECK THE (T13) SPEED SENSOR GROUND CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T13) Speed Sensor Ground circuit. Is the resistance below 5.0 ohms? Yes Repair the (T13) Speed Sensor Ground circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK THE (T14) OUTPUT SPEED SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Remove the Transmission Control Relay. Place a jumper wire between the Fused B(+) circuit and the Transmission Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the (T14) Output Speed Sensor Signal circuit. Is the voltage above 0.5 volts? Yes Repair the (T14) Output Speed Sensor Signal circuit for a short to voltage. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 8) .
8. 8) CHECK THE (T13) SPEED SENSOR GROUND CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (T13) Speed Sensor Ground circuit. Is the voltage above 0.5 volts? Yes Repair the (T13) Speed Sensor Ground circuit for a short to voltage. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
9. 9) 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. Were there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Continuously every 7 msec with the ignition on and engine running.

1. Set Condition: This DTC will set when the calculated engine speed is less than 390 RPM with the engine running, or greater than 8000 RPM, for the period of 2.0 seconds. The PCM will place the Transmission in Limp-in when this DTC is set. Note: This is not a Transmission Input Speed Sensor DTC.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on, engine running, and after the transmission has achieved the proper gear ratio.

1. Set Condition: If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC can take up to five minutes of problem identification before illuminating the MIL

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on, engine running, and after the transmission has achieved the proper gear ratio.

1. Set Condition: If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC can take up to five minutes of problem identification before illuminating the MIL

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on, engine running, and after the transmission has achieved the proper gear ratio.

1. Set Condition: If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC can take up to five minutes of problem identification before illuminating the MIL

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on, engine running, and after the transmission has achieved the proper gear ratio.

1. Set Condition: If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC can take up to five minutes of problem identification before illuminating the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on, engine running, and after the transmission has achieved the proper gear ratio.

1. Set Condition: If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC can take up to five minutes of problem identification before illuminating the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on, engine running, and after the transmission has achieved the proper gear ratio.

1. Set Condition: If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC can take up to five minutes of problem identification before illuminating the MIL

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: During Electronically Modulated Converter Clutch (EMCC) Operation.

1. Set Condition: Transmission must be in EMCC, with input speed greater than 1750 RPM. L/R-TCC Solenoid achieves the maximum duty cycle and can not pull engine speed within 60 RPM of input speed. Also when the transmission is in FEMCC and the engine slips TCC more than 100 RPM for 10 seconds. This DTC can take up to five minutes of problem identification before illuminating the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Initially at power-up, then every 10 seconds thereafter. The solenoid circuits will also be tested immediately after a gear ratio or pressure switch error is detected.

1. Set Condition: After three consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error. NOTE: This DTC is strictly an electrical fault and cannot be caused by any internal transmission failure other than an open in the Transmission Solenoid/TRS Assembly. If the Transmission Solenoid/TRS Assembly is in need of replacement - do not replace the Valve Body.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 360

Scheme 361

Scheme 362

1. 1) CHECK DTCS With the scan tool, read DTCs. Are there any TIPM TCM Power Control Circuit or TCM Power Input DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
2. 2) CHECK IF DTC P0750 IS PRESENT Ignition on, engine not running. With the scan tool, erase all Transmission DTCs. Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the scan tool, actuate the L/R Solenoid. Monitor the L/R Solenoid LED on the Transmission Simulator. Did the L/R Solenoid LED on the Transmission Simulator blink on and off? Yes Go to 3) . No Go to 5) .
3. 3) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY With the Transmission simulator still connected, continue to actuate the L/R solenoid for 2 minutes. After 2 minutes of actuation, with the scan tool, stop the actuation and check for transmission DTCs. Did the DTC P0750 reset during the actuation test? Yes Go to 5) . No Go to 4) .
4. 4) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY With the Transmission simulator still connected, continue to actuate the L/R solenoid for another 2 minutes while wiggling the related wiring harness and connectors. With the scan tool, stop the actuation and check for transmission DTCs. Did the DTC P0750 reset during the actuation test? Yes Repair wiring harness or connectors as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Refer to «REMOVAL»(ref-288312-S06385676602008062000000) . NOTE: DO NOT replace the entire Valve Body. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
5. 5) CHECK THE (T20) L/R SOLENOID CONTROL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM harness connectors. Measure the resistance between the (T20) L/R Solenoid Control circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T20) L/R Solenoid Control circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T20) L/R Solenoid Control circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 6) .
6. 6) CHECK THE (T20) L/R SOLENOID CONTROL CIRCUIT FOR AN OPEN Connect Miller tool #8815 to the PCM C4 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 Miller tool #8815 to perform diagnosis. Measure the resistance of the (T20) L/R Solenoid Control circuit between the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T20) L/R Solenoid Control circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK THE (T20) L/R SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T20) L/R Solenoid Control circuit. Is the resistance below 5.0 ohms? Yes Repair the (T20) L/R Solenoid Control circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .

1. When Monitored: Initially at power-up, then every 10 seconds thereafter. The solenoid circuits will also be tested immediately after a gear ratio or pressure switch error is detected.

1. Set Condition: After three consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error. NOTE: This DTC is strictly an electrical fault and cannot be caused by any internal transmission failure other than an open in the Transmission Solenoid/TRS Assembly. If the Transmission Solenoid/TRS Assembly is in need of replacement - do not replace the Valve Body.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 363

Scheme 364

Scheme 365

1. 1) CHECK DTCS With the scan tool, read DTCs. Are there any TIPM TCM Power Control Circuit or TCM Power Input DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
2. 2) CHECK IF DTC P0755 IS PRESENT Ignition on, engine not running. With the scan tool, erase all Transmission DTCs. Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the scan tool, actuate the 2C Solenoid. Did the 2C Solenoid LED blink on and off on the Transmission Simulator? Yes Go to 3) . No Go to 5) .
3. 3) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY With the Transmission simulator still connected, continue to actuate the 2C solenoid for 2 minutes. After 2 minutes of actuation, with the scan tool, stop the actuation and check for transmission DTCs. Did the DTC P0755 reset during the actuation test? Yes Go to 5) . No Go to 4) .
4. 4) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY With the Transmission simulator still connected, continue to actuate the 2C solenoid for another 2 minutes while wiggling the related wiring harness and connectors. With the scan tool, stop the actuation and check for transmission DTCs. Did the DTC P0755 reset during the actuation test? Yes Repair wiring harness or connectors as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Refer to «REMOVAL»(ref-288312-S06385676602008062000000) . NOTE: Do NOT replace the entire Valve Body. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
5. 5) CHECK THE (T219) 2C SOLENOID CONTROL CIRCUIT SHORT FOR A SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM harness connectors. Measure the resistance between the (T219) 2C Solenoid Control circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T219) 2C Solenoid Control circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T219) 2C Solenoid Control circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 6) .
6. 6) CHECK THE (T219) 2C SOLENOID CONTROL CIRCUIT FOR AN OPEN Connect Miller tool #8815 to the PCM C4 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 Miller tool #8815 to perform diagnosis. Measure the resistance of the (T219) 2C Solenoid Control circuit between the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T219) 2C Solenoid Control circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK THE (T219) 2C SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T219) 2C Solenoid Control circuit. Is the resistance below 5.0 ohms? Yes Repair the (T219) 2C Solenoid Control circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .

1. When Monitored: Initially at power-up, then every 10 seconds thereafter. The solenoid circuits will also be tested immediately after a gear ratio or pressure switch error is detected.

1. Set Condition: After three consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error. NOTE: This DTC is strictly an electrical fault and cannot be caused by any internal transmission failure other than an open in the Transmission Solenoid/TRS Assembly. If the Transmission Solenoid/TRS Assembly is in need of replacement - do not replace the Valve Body.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 366

Scheme 367

Scheme 368

1. 1) CHECK DTCS With the scan tool, read DTCs. Are there any TIPM TCM Power Control Circuit or TCM Power Input DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
2. 2) CHECK IF DTC P0760 IS PRESENT Ignition on, engine not running. With the scan tool, erase all Transmission DTCs. Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the scan tool, actuate the OD Solenoid. Monitor the OD Solenoid LED on the Transmission Simulator. Did the OD Solenoid LED on the Transmission Simulator blink on and off? Yes Go to 3) . No Go to 5) .
3. 3) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY With the Transmission simulator still connected, continue to actuate the OD solenoid for 2 minutes. After 2 minutes of actuation, with the scan tool, stop the actuation and check for transmission DTCs. Did the DTC P0760 reset during the actuation test? Yes Go to 5) . No Go to 4) .
4. 4) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY With the Transmission simulator still connected, continue to actuate the OD solenoid for another 2 minutes while wiggling the related wiring harness and connectors. With the scan tool, stop the actuation and check for transmission DTCs. Did the DTC P0760 reset during the actuation test? Yes Repair wiring harness or connectors as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Refer to «REMOVAL»(ref-288312-S06385676602008062000000) . Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
5. 5) CHECK THE (T60) OD SOLENOID CONTROL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM harness connectors. Measure the resistance between the (T60) OD Solenoid Control circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T60) OD Solenoid Control circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T60) OD Solenoid Control circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 6) .
6. 6) CHECK THE (T60) OD SOLENOID CONTROL CIRCUIT FOR AN OPEN Connect Miller tool #8815 to the PCM C4 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 Miller special tool #8815 to perform diagnosis. Measure the resistance of the (T60) OD Solenoid Control circuit between the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T60) OD Solenoid Control circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK THE (T60) OD SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T60) OD Solenoid Control circuit. Is the resistance below 5.0 ohms? Yes Repair the (T60) OD Solenoid Control circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .

1. When Monitored: Initially at power-up, then every 10 seconds thereafter. The solenoid circuits will also be tested immediately after a gear ratio or pressure switch error is detected.

1. Set Condition: After three consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error. NOTE: This DTC is strictly an electrical fault and cannot be caused by any internal transmission failure other than an open in the Transmission Solenoid/TRS Assembly. If the Transmission Solenoid/TRS Assembly is in need of replacement - do not replace the Valve Body.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 369

Scheme 370

Scheme 371

1. 1) CHECK DTCS With the scan tool, read DTCs. Are there any TIPM TCM Power Control Circuit or TCM Power Input DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
2. 2) CHECK IF DTC P0765 IS PRESENT Ignition on, engine not running. With the scan tool, erase all Transmission DTCs. Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the scan tool, actuate the UD Solenoid. Monitor the UD Solenoid LED on the Transmission Simulator. Did the UD Solenoid LED on the Transmission Simulator blink on and off? Yes Go to 3) . No Go to 5) .
3. 3) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY With the Transmission simulator still connected, continue to actuate the UD solenoid for 2 minutes. After 2 minutes of actuation, with the scan tool, stop the actuation and check for transmission DTCs. Did the DTC P0765 reset during the actuation test? Yes Go to 5) . No Go to 4) .
4. 4) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY With the Transmission simulator still connected, continue to actuate the UD solenoid for another 2 minutes while wiggling the related wiring harness and connectors. With the scan tool, stop the actuation and check for transmission DTCs. Did the DTC P0765 reset during the actuation test? Yes Repair wiring harness or connectors as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Refer to «REMOVAL»(ref-288312-S06385676602008062000000) . NOTE: DO NOT replace the entire Valve Body. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
5. 5) CHECK THE (T59) UD SOLENOID CONTROL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM harness connectors. Measure the resistance between the (T59) UD Solenoid Control circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T59) UD Solenoid Control circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T59) UD Solenoid Control circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 6) .
6. 6) CHECK THE (T59) UD SOLENOID CONTROL CIRCUIT FOR AN OPEN Connect Miller tool #8815 to the PCM C4 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 Miller tool #8815 to perform diagnosis. Measure the resistance of the (T59) UD Solenoid Control circuit from the Transmission Solenoid/TRS Assembly harness connector to the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T59) UD Solenoid Control circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK THE (T59) UD SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T59) UD Solenoid Control circuit. Is the resistance below 5.0 ohms? Yes Repair the (T59) UD Solenoid Control circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .

1. When Monitored: Initially at power-up, then every 10 seconds thereafter. The solenoid circuits will also be tested immediately after a gear ratio or pressure switch error is detected.

1. Set Condition: After three consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error. NOTE: This DTC is strictly an electrical fault and cannot be caused by any internal transmission failure other than an open in the Transmission Solenoid/TRS Assembly. If the Transmission Solenoid/TRS Assembly is in need of replacement - do not replace the Valve Body.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 372

Scheme 373

Scheme 374

1. 1) CHECK DTCS With the scan tool, read DTCs. Are there any TIPM TCM Power Control Circuit or TCM Power Input DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
2. 2) CHECK IF DTC P0770 IS PRESENT Ignition on, engine not running. With the scan tool, erase all Transmission DTCs. Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the scan tool, actuate the 4C Solenoid. Monitor the 4C Solenoid LED on the Transmission Simulator. Did the 4C Solenoid LED on the Transmission Simulator blink on and off? Yes Go to 3) . No Go to 5) .
3. 3) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY With the Transmission simulator still connected, continue to actuate the 4C solenoid for 2 minutes. After 2 minutes of actuation, with the scan tool, stop the actuation and check for transmission DTCs. Did the DTC P0770 reset during the actuation test? Yes Go to 5) . No Go to 4) .
4. 4) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY With the Transmission simulator still connected, continue to actuate the 4C solenoid for another 2 minutes while wiggling the related wiring harness and connectors. With the scan tool, stop the actuation and check for transmission DTCs. Did the DTC P0770 reset during the actuation test? Yes Repair wiring harness or connectors as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Refer to «REMOVAL»(ref-288312-S06385676602008062000000) . NOTE: DO NOT replace the entire Valve Body. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
5. 5) CHECK THE (T259) 4C SOLENOID CONTROL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM harness connectors. Measure the resistance between the (T259) 4C Solenoid Control circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T259) 4C Solenoid Control circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T259) 4C Solenoid Control circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 6) .
6. 6) CHECK THE (T259) 4C SOLENOID CONTROL CIRCUIT FOR AN OPEN Connect Miller tool #8815 to the PCM C4 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 Miller special tool #8815 to perform diagnosis. Measure the resistance of the (T259) 4C Solenoid Control circuit between the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T259) 4C Solenoid Control circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK THE (T259) 4C SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T259) 4C Solenoid Control circuit. Is the resistance below 5.0 ohms? Yes Repair the (T259) 4C Solenoid Control circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .

Scheme 375

1. When Monitored: Continuously with the ignition on and engine running.

1. Set Condition: The DTC will set if the L/R Pressure Switch reads open or closed at the wrong time in a given gear.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 376

Scheme 377

Scheme 378

1. 1) CHECK FOR OTHER DTCS Ignition on, engine not running. With the scan tool, check for other transmission DTCs. Are there any Transmission Loss of Prime, TCM Power Input, and/or TIPM TCM Power Control Circuit DTCs present also? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. If the DTC «P0944-LOSS OF HYDRAULIC PUMP PRIME»(ref-288317-S39544588472008062000000) is present, perform its respective test first. No Go to 2) .
2. 2) CHECK IF DTC P0841 IS PRESENT With the scan tool, check the Event Data for P0841. NOTE: Make sure to record all Event Data stored in the scan tool for future reference in this test procedure. Does the Event Data show the DTC P0841? Yes Go to 3) . No Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom.
3. 3) CHECK IF DTC SET IN REVERSE Does the Event Data show the DTC P0841 set while in Reverse? Yes Go to 10) . No Go to 4) .
4. 4) CHECK IF THE L/R PRESSURE SWITCH WAS CLOSED Does the Event Data show the L/R Pressure Switch reading CLOSED when the DTC P0841 was set? Yes Go to 5) . No Go to 14) .
5. 5) CHECK THE PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. Ignition on, engine not running. Turn the Pressure Switch selector to L/R on the Transmission Simulator. With the scan tool, monitor the L/R Pressure Switch state while pressing the Pressure Switch Test button on the Transmission Simulator. Did the L/R Pressure Switch state change from open to closed while pressing the Pressure Switch Test button on the Transmission Simulator? Yes Go to 6) . No Go to 10) .
6. 6) CHECK WIRING AND CONNECTORS 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. Were there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK IF DTC SET IN FIRST GEAR In the Event Data recorded earlier, does the Event Data show the Present Gear as first gear when the DTC P0841 was set ? Yes Go to 8) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
8. 8) CHECK IF THE NO. 1 CHECK BALL IS CUT OR DAMAGED Turn the ignition off to the lock position. Remove the Transmission Valve Body per the Service Information. Check the No. 1 Check Ball for any possible cuts or damage. Is the No. 1 Check Ball cut or damaged? Yes Replace the No. 1 Check Ball and check for clutch debris in the transmission oil pan. If there is excessive debris, perform internal repairs to the L/R Clutch assembly. Refer to the Service Information for proper repair procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 9) .
9. 9) CHECK IF THE REVERSE CARRIER SNAP RING IS DISLODGED Looking through the windows in the bottom of the case, check whether the snap ring at the front of the Reverse (center) Carrier has dislodged. NOTE: It may be necessary to pry the Input Annulus Gear Shell rearward to check this snap ring. Is the Reverse Carrier Snap Ring dislodged? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
10. 10) CHECK THE (T50) L/R PRESSURE SWITCH SENSE CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333 if connected in a previous step or disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector and connect Miller tool #8815. 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 #8815 to perform diagnosis. Measure the resistance of the (T50) L/R Pressure Switch Sense circuit between the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminal of the Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T50) L/R Pressure Switch Sense circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 11) .
11. 11) 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 «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 12) .
12. 12) CHECK THE PCM POWERS AND GROUNDS 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. Were there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 13) .
13. 13) CHECK IF THE DTC RESETS With the scan tool, clear the DTC and road test the vehicle. Try to duplicate the conditions in which the DTC originally set using the Event Data recorded earlier. Did the DTC P0841 reset? Yes Replace the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 17) .
14. 14) CHECK FOR LOW LINE PRESSURE In the Event Data recorded earlier, compare the Line Pressure and the Desired Line Pressure. Is the Line Pressure less than 40 psi, and significantly below the Desired Line Pressure? Yes Repair as necessary to correct low line pressure. Check for low fluid level. Check the Primary Oil Filter seal for a split, crack, or improperly installed. Refer to the Service Information for the proper installation procedure. If the fluid level and Primary Oil Filter are OK, check the Main Regulator Valve in the Oil Pump per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 15) .
15. 15) CHECK THE (T50) L/R PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect all PCM harness connectors. Measure the resistance between the (T50) L/R Pressure Switch Sense circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T50) L/R Pressure Switch Sense circuit and all other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T50) L/R Pressure Switch Sense circuit for a short to other circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 16) .
16. 16) CHECK IF DTC RESETS With the scan tool, clear the DTC and road test the vehicle. Try to duplicate the conditions in which the DTC originally set using the Event Data recorded earlier. Did the DTC P0841 reset? Yes Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 17) .
17. 17) 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. Were there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: In any forward gear with engine speed above 1000 RPM shortly after a shift and every minute thereafter.

1. Set Condition: After a shift into a forward gear, with engine speed above 1000 RPM, the PCM momentarily turns on element pressure to the Clutch circuits that don't have pressure to identify the correct Pressure Switch closes. If the Pressure Switch does not close 2 times, the DTC sets.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 379

Scheme 380

Scheme 381

1. 1) CHECK FOR RELATED DTCS With the scan tool, check for other transmission DTCs Are there any Loss of Prime, TIPM TCM Power Control Circuit, and/or TCM Power Input DTCs present also? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. If the DTC «P0944-LOSS OF HYDRAULIC PUMP PRIME»(ref-288317-S39544588472008062000000) is present, perform its respective test first. No Go to 2) .
2. 2) CHECK IF DTC P0755 IS PRESENT With the scan tool, read DTCs. Is the DTC P0755 also present? Yes Perform diagnostics for «P0755-2C SOLENOID CIRCUIT»(ref-288317-S24159367482008062000000) . No Go to 3) .
3. 3) CHECK IF DTCS P0732, P0735 AND/OR P0846 ARE PRESENT With the scan tool, read DTCs. Are the DTCs P0732, P0735, and/or P0846 present also? Yes Go to 12) . No Go to 4) .
4. 4) 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 5) . No Go to 15) .
5. 5) CHECK IF THE LINE PRESSURE STAYS THE SAME Start the engine. Warm the transmission to 82° C or 180° F. Firmly apply the brakes. With the scan tool, monitor the Line Pressure during the following step. Move the shift lever to each gear position, pausing momentarily in each position and record the line pressure reading. Allow the pressure to stabilize for at least 5 seconds in each range. Did the line pressure remain at a steady value between 585 and 655 kPa or 85 and 95 psi in each position? Yes Go to 6) . No Go to 10) .
6. 6) CHECK THE LINE PRESSURE SENSOR CONNECTION Ignition on, engine not running. With the scan tool, monitor the Line Pressure while firmly pushing the Transmission Line Pressure Sensor connector inwards towards the Transmission. Did the Line Pressure reading on the scan tool change to about 207 kPa (30 psi) or 0.7 volts when the connector was pushed inward? Yes Disconnect and properly reconnect the Line Pressure Sensor connector. Inspect terminals and repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK THE LINE PRESSURE SENSOR OPERATION Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. 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 while turning the Pressure Switch selector to each of the 3 line pressure positions on the Transmission Simulator. NOTE: All three scan tool Line Pressure readings should be steady and ±14 kPa (2.0 psi) or 1.0 volts of the reading specified on the Transmission Simulator. Did the scan tool Line Pressure readings match the specified readings on the Transmission Simulator and remain steady in all three positions? Yes Replace the Line Pressure Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 8) .
8. 8) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect Transmission Simulator. Disconnect the PCM C1 harness connector and connect Miller tool #8815. 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 #8815 to perform diagnosis. Measure the resistance of the (F856) 5-volt Supply circuit between the Line Pressure Sensor harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 9) .
9. 9) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (F856) 5-volt Supply circuit. Is the resistance below 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the and program the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
10. 10) COMPARE SCAN TOOL TO THE PRESSURE GAUGE Turn the ignition off to the lock position. Connect the Line Pressure Adapter, Miller tool #8259 and 0-300 psi Test Gauge, Miller tool #C-3293-SP. Refer to the Service Information for proper installation procedure. CAUTION: Apply parking brake. Start the engine. In the following steps, compare the scan tool Line Pressure to the Pressure Gauge readings in each gear. CAUTION: Do not overheat transmission. With the gear selector in park, raise the rpm to 1500, and compare line pressure readings. Firmly apply the brakes, move the gear selector into reverse, raise the rpm to 1500, and compare the line pressure readings. Firmly apply the brakes, move the gear selector into drive, raise the rpm to 1500, and compare the line pressure readings. Does the scan tool Line Pressure readings match the Pressure Gauge readings ± 10 psi? Yes Go to 11) . No Replace the Line Pressure Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
11. 11) CHECK WIRING AND CONNECTORS Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Remove the Line Pressure Adapter, Miller tool #8259 and 0-300 psi Test Gauge, Miller tool #C-3293-SP. Install the Transmission Simulator, Miller tool #8333. On the Transmission Simulator, turn the Pressure Switch selector switch to 2C. Ignition on, engine not running. With the scan tool, monitor the 2C Pressure Switch state while pressing and holding the Pressure Switch test button and wiggling the wire harness and connectors that pertain to the 2C Pressure Switch. Did the 2C Pressure Switch state change to closed and remain closed while wiggling the wires? Yes Go to 12) . No Go to 14) .
12. 12) CHECK FOR EXCESSIVE DEBRIS Turn the ignition off to the lock position. Remove the Transmission Simulator, Miller tool #8333. Remove and inspect the Transmission Oil Pan per the Service Information. Does the Transmission Oil Pan contain excessive debris or contamination? Yes Repair the cause of the excessive debris in the Transmission Oil Pan. Refer to the Service Information for the proper procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 13) .
13. 13) CHECK THE 2C HYDRAULIC CLUTCH CIRCUIT Remove the Valve Body and air check the 2C clutch hydraulic circuit, in the 2C/4C clutch retainer, for leakage per the Service Information. NOTE: The 2C hydraulic clutch circuit contains a small bleed orifice, a small amount of air leakage is normal. Was there excessive air leakage noticed during the air check? Yes Repair as necessary. Check the 2C clutch piston, piston seals and bleed orifice assembly. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Disassemble and inspect the Valve Body and repair as necessary. Inspect the 2C Accumulator piston and seals. Check for an extra check ball downstream from the No. 7 check ball pocket and repair as necessary. If no problems are found in the Valve Body, replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
14. 14) CHECK THE (T147) 2C PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Disconnect all PCM harness connectors. Disconnect the Transmission Solenoid/TRS Assembly harness connector. NOTE: Make sure the Transmission Solenoid/TRS Assembly harness connector is disconnected. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between the (T147) 2C Pressure Switch Sense circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T147) 2C Pressure Switch Sense circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T147) 2C Pressure Switch Sense circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
15. 15) 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. If the Event Data shows the DTC P0845 set while the Line Pressure was significantly below the Desired Line Pressure reading, check for causes of low line pressure (low fluid level, broken or mis-installed primary oil filter or filter seal, sticking Main Regulator Valve in the Pump Valve Body etc.). If the data shows the DTC set while the Line Pressure reading was significantly higher than the Desired Line Pressure, check the Line Pressure Sensor and related wiring. Where there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Continuously with the ignition on, engine running, with the transmission in gear.

1. Set Condition: The DTC is set if the 2C Pressure Switch reads open or closed at the wrong time in a given gear.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 382

Scheme 383

1. 1) DETERMINE IF RELATED TCM POWER INPUT DTCS ARE PRESENT With the scan tool, check for other transmission DTCs. Are there any TCM Power Input DTCs present also? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
2. 2) CHECK IF THE DTC IS CURRENT With the scan tool, check the Event Data. Does the Event Data show data for DTC P0846? Yes Go to 3) . No Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom.
3. 3) CHECK FOR MULTIPLE DTCS With the scan tool, check for other transmission DTCs. Are there two or more related pressure switch rationality DTCs present in addition to P0846? Yes Go to 4) . No Go to 7) .
4. 4) CHECK IF ALL PRESSURE SWITCHES READ CLOSED With the scan tool, check the Event Data for P0846. NOTE: Make sure to record all Event Data stored in the scan tool for future reference in this test procedure. Do all the pressure switches read CLOSED in the Event Data for P0846? Yes Perform diagnostics for «P0882-TCM POWER INPUT LOW»(ref-288317-S29281600652008062000000) . Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 5) .
5. 5) CHECK IF ALL PRESSURE SWITCHES READ OPEN In the Event Data recorded earlier, do all the pressure switches read OPEN? Yes Go to 6) . No Go to 7) .
6. 6) CHECK FOR LOW LINE PRESSURE In the Event Data recorded earlier, is the Line Pressure less than 40 psi, and significantly below the Desired Line Pressure? Yes Repair as necessary to correct low line pressure. Check fluid level and adjust as necessary. If fluid level is OK, check the Primary Oil Filter seal for a split, crack, or improperly installed. If the filter and seal are OK, check the Main Regulator Valve in the Oil Pump. Refer to the Service Information for the above procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
7. 7) CHECK IF THE DTC SET IN PARK REVERSE OR NEUTRAL With the scan tool, check the Event Data for P0846. NOTE: Make sure to record all Event Data stored in the scan tool for future reference in this test procedure. Does the Event Data show the DTC P0846 set in Park, Reverse, or Neutral? Yes Go to 12) . No Go to 8) .
8. 8) CHECK IF THE 2C PRESSURE SWITCH READS CLOSED In the Event Data recorded earlier, does the Event Data show the 2C Pressure Switch reading CLOSED? Yes Go to 10) . No Go to 9) .
9. 9) COMPARE THE LINE PRESSURE TO THE DESIRED LINE PRESSURE In the Event Data recorded earlier, compare the Line Pressure and the Desired Line Pressure. Is the Line Pressure less than 40 psi, and significantly below the Desired Line Pressure? Yes Repair as necessary to correct low line pressure. Check fluid level and adjust as necessary. If fluid level is OK, check the Primary Oil Filter seal for a split, crack, or improperly installed. If the filter and seal are OK, check the Main Regulator Valve in the Oil Pump. Refer to the Service Information for the above procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 15) .
10. 10) CHECK THE PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the Transmission Simulator, turn the Pressure Switch selector switch to the 2C position. With the scan tool, monitor the 2C Pressure Switch while pressing the Pressure Switch test button on the Transmission Simulator. Did the state of the 2C Pressure Switch change while pressing the Pressure Switch Test button? Yes Go to 11) . No Go to 12) .
11. 11) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY 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. Where there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
12. 12) CHECK THE (T147) 2C PRESSURE SWITCH SENSE CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM C4 harness connector. Connect Miller tool #8815 to the PCM C4 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 Miller tool #8815 to perform diagnosis. Measure the resistance of the (T147) 2C Pressure Switch Sense circuit from the appropriate terminal of Miller tool #8815 to the Transmission Solenoid/TRS Assembly harness connector. Is the resistance above 5.0 ohms? Yes Repair the (T147) 2C Pressure Switch Sense circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 13) .
13. 13) CHECK THE (T147) 2C PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T147) 2C Pressure Switch Sense circuit. Is the resistance below 5.0 ohms? Yes Repair the (T147) 2C Pressure Switch Sense circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 14) .
14. 14) CHECK THE (T147) 2C PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Measure the resistance between the (T147) 2C Pressure Switch Sense circuit and all the other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms? Yes Repair the (T147) 2C Pressure Switch Sense circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace and program the Powertrain Control Module (PCM) per the Service Information. With the scan tool, perform the Quick Learn procedure. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
15. 15) CHECK IF THE NO. 5 AND/OR NO. 7 CHECK BALL IS CUT OR DAMAGED Turn the Ignition off to the lock position. Remove the Valve Body Assembly per the Service Information. Inspect the No. 5 and No. 7 check balls for any cuts or damage. Check for an extra check ball in the passage downstream from the No. 7 check ball pocket. Inspect the 2C accumulator piston and seals and also the 2C tower seal on top of the valve body. Refer to the Service Information. Where there any problems found? Yes Repair as necessary. Check for excessive clutch debris in the transmission oil pan. If excessive clutch debris is present, repair 2C clutch as necessary. Refer to the Service Information for proper repair procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 16) .
16. 16) CHECK FOR EXCESSIVE FLUID LEAKAGE WITHIN 2C CLUTCH CIRCUIT Air check the 2C Clutch hydraulic circuit. Refer to the Service Information. NOTE: This hydraulic clutch circuit contains a small bleed orifice. Small leakage is considered normal. Was there excessive air leakage in the 2C Clutch hydraulic circuit? Yes Repair as necessary. Refer to the Service Information for proper repair procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .

1. When Monitored: Continuously while driving in a forward gear.

1. Set Condition: The PCM continuously monitors Actual Line Pressure and compares it to Desired Line Pressure. If the Actual Line Pressure is more than 15 psi below Desired Line Pressure for 3.5 seconds continuously, this DTC will set.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 384

Scheme 385

1. 1) CHECK FOR RELATED DTCS With the scan tool, check for other transmission DTCs. Is the DTC P0933 present also? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
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 11) .
3. 3) CHECK THE LINE PRESSURE SENSOR CONNECTION Ignition on, engine not running. With the scan tool, monitor the Line Pressure, firmly push the Line Pressure Sensor harness connector towards the Transmission. Did the Line Pressure change to about 207 kPa (30 psi) or 0.7 volts when the connector was pushed? Yes Disconnect and properly reconnect the Line Pressure Sensor connector. Inspect terminals and repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 4) .
4. 4) CHECK THE PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. 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 steps. Using the Transmission Simulator, set the rotary knob 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 Go to 5) . No Go to 7) .
5. 5) CHECK THE LINE PRESSURE SENSOR Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333 and reconnect all previously disconnected connectors. Install the Line Pressure Adapter, Miller tool #8259, and the Pressure Gauge, Miller tool #C-3293, 0 to 2000 kPa or 0 to 300 psi. Start the engine in park. Monitor the line pressure readings of both the scan tool and the pressure gauge and compare the two readings. Is the line pressure gauge reading within 34 kPa or 5 psi of the scan tool reading? Yes Go to 6) . No Replace the Line Pressure Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
6. 6) CHECK FOR A PLUGGED TRANSMISSION OIL FILTER Turn the ignition off to the lock position. Remove and inspect the Transmission Oil Pan for excessive debris per the Service Information. Remove and inspect the Primary Oil Filter per the Service Information. NOTE: Make sure the Primary Transmission Oil Filter and/or O-ring is not cracked or split. Does the Oil Pan contain excessive debris and/or is the Primary Oil Filter cracked or plugged? Yes Repair the plugged, cracked, or split Primary Transmission Oil Filter and/or O-ring. If the Primary Transmission Oil Filter is plugged refer to the Service Information for the proper Hydraulic repair procedure. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Repair internal transmission and inspect the Transmission Oil Pump per the Service Information and replace if necessary. If no problem is found, replace the Solenoid/TRS Assembly. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
7. 7) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE Disconnect the Transmission Simulator, Miller tool #8333. Reconnect all previously disconnected connectors except the Line Pressure Sensor harness connector. Ignition on, engine not running. Measure the voltage of the (F856) 5-volt Supply circuit in the Line Pressure Sensor harness connector. Is the voltage above 5.5 volts? Yes Repair the (F856) 5-volt Supply circuit for a short to voltage. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 8) .
8. 8) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the PCM C1 harness connector and connect Miller tool #8815. 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 #8815 to perform diagnosis. Measure the resistance of the (F856) 5-volt Supply circuit between the Line Pressure Sensor harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 9) .
9. 9) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (F856) 5-volt Supply circuit. Is the resistance below 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 10) .
10. 10) CHECK THE (T140) PRESSURE CONTROL SOLENOID CONTROL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect all PCM harness connectors. Measure the resistance between the (T140) Pressure Control Solenoid Control circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T140) Pressure Control Solenoid Control circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T140) Pressure Control Solenoid Control circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
11. 11) 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 «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Continuously while driving in a forward gear.

1. Set Condition: The PCM continuously monitors Actual Line Pressure. If the Actual Line Pressure reading is greater than 827 kPa (120 psi), while the Pressure Control Solenoid duty cycle is at or near its maximum value (which should result in minimum line pressure) for 3.5 seconds continuously, the DTC will set.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 386

Scheme 387

1. 1) CHECK FOR RELATED DTCS With the scan tool, check for other Transmission DTCs. Is the DTC P0932 or P0882 present also? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
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 10) .
3. 3) CHECK THE LINE PRESSURE SENSOR CONNECTION Ignition on, engine not running . With the scan tool, monitor the Transmission Line Pressure. Firmly push the Line Pressure Sensor harness connector inward towards the Transmission. Did the Line Pressure change to about 207 kPa (30 psi) or 0.7 volts when the sensor connector was pushed? Yes Disconnect and properly reconnect the Line Pressure Sensor connector. Inspect terminals and repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 4) .
4. 4) CHECK THE PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. 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. Using the Transmission Simulator, set the rotary 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 Go to 5) . No Go to 6) .
5. 5) CHECK THE LINE PRESSURE SENSOR CALIBRATION Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333 and reconnect all previously disconnected connectors. Install the Line Pressure Adapter, Miller tool #8259, and Pressure Gauge, Miller tool #C-3293, 0 to 2000 kPa (0 to 300 psi). Start the engine in park. Monitor the Line Pressure readings on the scan tool and the pressure gauge. Compare the Line Pressure readings between the scan tool and the pressure gauge. Is the pressure gauge reading within 34 kPa (5 psi) of the scan tool reading? Yes Repair the internal transmission and inspect the Transmission Oil Pump per the Service Information and replace if necessary. If no problem is found, replace the Transmission Solenoid/TRS Assembly, possible cause is a stuck Pressure Control Solenoid. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Line Pressure Sensor per the Service information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
6. 6) CHECK THE (T140) PRESSURE CONTROL SOLENOID CONTROL CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the Powertrain Control Module C4 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 Miller tool #8815 to perform diagnosis. Measure the resistance of the (T140) Pressure Control Solenoid Control circuit between the appropriate terminal of Miller tool #8815 and the Solenoid/TRS Assembly harness connector. Is the resistance above 5.0 ohms? Yes Repair the (T140) Pressure Control Solenoid Control circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK THE (T140) PRESSURE CONTROL SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T140) Pressure Control Solenoid Control circuit. Is the resistance below 5.0 ohms? Yes Repair the (T140) Pressure Control Solenoid Control circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 8) .
8. 8) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN Measure the resistance of the (F856) 5-volt Supply circuit between the Line Pressure Sensor harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 9) .
9. 9) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND Disconnect the PCM C1 harness connector. Disconnect the Line Pressure Sensor 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 Miller tool #8815 to perform diagnosis. Measure the resistance between ground and the (F856) 5-volt Supply circuit. Is the resistance below 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
10. 10) 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 «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: In any forward gear with engine speed above 1000 rpm shortly after a shift and every minute thereafter.

1. Set Condition: After a shift into a forward gear, with engine speed above 1000 rpm, the PCM momentarily turns on element pressure to the Clutch circuits that don't have pressure to identify the correct Pressure Switch closes. If the Pressure Switch does not close 2 times, the DTC sets.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 388

1. 1) CHECK FOR RELATED DTCS With the scan tool, check for other transmission DTCs. Is there any Loss of Prime, TCM Power Input, and/or Line Pressure Sensor DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. If the DTC «P0944-LOSS OF HYDRAULIC PUMP PRIME»(ref-288317-S39544588472008062000000) is present, perform its respective test first. No Go to 2) .
2. 2) CHECK FOR RELATED DTCS With the scan tool, read DTCs. Is the DTC P0760 also present? Yes Refer to the symptom list and perform diagnostics for «P0760-OD SOLENOID CIRCUIT»(ref-288317-S23093107642008062000000) . No Go to 3) .
3. 3) CHECK FOR RELATED DTCS With the scan tool, check for other transmission DTCs. Are any of the DTCs, P0733, P0734,P0735 and/or P0871 present also? Yes Go to 12) . No Go to 4) .
4. 4) 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 5) . No Go to 15) .
5. 5) CHECK LINE PRESSURE Start the engine. Warm the transmission to 82° C or 180° F. Firmly apply the brakes. With the scan tool, monitor the Line Pressure during the following step. Move the shift lever to each gear position, pausing momentarily in each position and record the line pressure reading. Allow the pressure to stabilize for at least 5 seconds in each range. Did the line pressure remain at a steady value between 585 and 655 kPa (85 and 95 psi) in each position? Yes Go to 6) . No Go to 10) .
6. 6) CHECK THE LINE PRESSURE SENSOR CONNECTION Ignition on, engine not running. With the scan tool, monitor the Line Pressure while firmly pushing the Transmission Line Pressure Sensor connector inwards towards the Transmission. Did the Line Pressure reading on the scan tool change to about 207 kPa (30 psi) or 0.7 volts when the connector was pushed inward? Yes Disconnect and properly reconnect the Line Pressure Sensor connector. Inspect terminals and repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK THE LINE PRESSURE SENSOR OPERATION Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. 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 while turning the Pressure Switch selector to each of the 3 line pressure positions on the Transmission Simulator. 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 scan tool Line Pressure readings match the specified readings on the Transmission Simulator and remain steady in all three positions? Yes Replace the Line Pressure Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 8) .
8. 8) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect Transmission Simulator. Disconnect the PCM C1 harness connector and connect Miller tool #8815. 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 #8815 to perform diagnosis. Measure the resistance of the (F856) 5-volt Supply circuit between the Line Pressure Sensor harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 9) .
9. 9) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (F856) 5-volt Supply circuit. Is the resistance below 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
10. 10) COMPARE SCAN TOOL TO PRESSURE GAUGE Turn the ignition off to the lock position. Connect the Line Pressure Adapter, Miller tool #8259 and 0-300 psi Test Gauge, Miller tool #C-3293-SP. Refer to the Service Information for proper installation procedure. CAUTION: Apply parking brake. Start the engine. In the following steps, compare the scan tool Line Pressure to the Pressure Gauge readings in each gear. CAUTION: Do not overheat transmission. With the gear selector in park, raise the rpm to 1500, and compare line pressure readings. Firmly apply the brakes, move the gear selector into reverse, raise the rpm to 1500, and compare the line pressure readings. Firmly apply the brakes, move the gear selector into drive, raise the rpm to 1500, and compare the line pressure readings. Does the scan tool Line Pressure readings match the Pressure Gauge readings ± 10 psi? Yes Go to 11) . No Replace the Line Pressure Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
11. 11) CHECK PCM AND WIRING Turn the ignition off to the lock position. Remove the Line Pressure Adapter, Miller tool #8259 and 0-300 psi Test Gauge, Miller tool #C-3293-SP. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. On the Transmission Simulator, turn the Pressure Switch selector switch to OD. Ignition on, engine not running. With the scan tool, monitor the OD Pressure Switch state while pressing and holding the Pressure Switch test button and wiggling the wire harness and connectors that pertain to the OD Pressure Switch. Did the OD Pressure Switch state change to closed and remain closed while wiggling the wires? Yes Go to 12) . No Go to 14) .
12. 12) CHECK FOR EXCESSIVE DEBRIS Turn the ignition off to the lock position. Remove the Transmission Simulator, Miller tool #8333. Remove and inspect the Transmission Oil Pan per the Service Information. Does the Transmission Oil Pan contain excessive debris or contamination? Yes Repair the cause of the excessive debris in the Transmission Oil Pan. Refer to the Service Information for the proper procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 13) .
13. 13) CHECK THE OD HYDRAULIC CLUTCH CIRCUIT Remove the Valve Body and air check the OD hydraulic clutch circuit (in the case) for leakage per the Service Information. NOTE: The OD hydraulic clutch circuit contains a small bleed orifice which connects to the Reverse hydraulic clutch circuit. A small amount of air leakage is normal. Was there excessive air leakage noticed during the air check? Yes Repair as necessary. Check the OD/Rev clutch piston seals, bleed orifice assembly, reaction shaft support seal rings, and machining of the main mating faces on the pump housing, pump valve body, and reaction shaft support. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Disassemble and inspect the Valve Body and repair as necessary. Inspect the OD Accumulator piston and seals. Check for an extra check ball downstream from the No. 6 check ball pocket and repair as necessary. If no problems are found in the Valve Body, replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
14. 14) CHECK THE (T9) OD PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Disconnect all PCM harness connectors. Disconnect the Transmission Solenoid/TRS Assembly harness connector. NOTE: Make sure the Transmission Solenoid/TRS Assembly harness connector is disconnected. Measure the resistance between the (T9) OD Pressure Switch Sense circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T9) OD Pressure Switch Sense circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T9) OD Pressure Switch Sense circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
15. 15) 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. If the Event Data shows the DTC P0870 set while the Line Pressure was significantly below the Desired Line Pressure reading, check for causes of low line pressure (low fluid level, broken or mis-installed primary oil filter or filter seal, sticking Main Regulator Valve in the Pump Valve Body etc.). If the data shows the DTC set while the Line Pressure reading was significantly higher than the Desired Line Pressure, check the Line Pressure Sensor and related wiring. Where there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Continuously with the ignition on and engine running.

1. Set Condition: The appropriate DTC is set if one of the pressure switches are open or closed at the wrong time in a given gear.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 389

Scheme 390

1. 1) CHECK DTCS With the scan tool, read DTCs. Are there any TCM Power Input DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
2. 2) CHECK FOR LINE PRESSURE DTCS With the scan tool, read DTCs. Are there any Line Pressure DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 3) .
3. 3) CHECK FOR OTHER PRESSURE SWITCH DTCS With the scan tool, check Transmission DTCs. Are there two or more other pressure switch rationality DTCs present in addition to P0871? Yes Go to 5) . No Go to 4) .
4. 4) CHECK IF DTC IS CURRENT With the scan tool, check and record the Event Data. NOTE: Make sure to record all Event Data stored in the scan tool for future reference in this test procedure. Does the Event Data show data for P0871? Yes Go to 8) . No Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom.
5. 5) CHECK IF PRESSURE SWITCHES READ CLOSED With the scan tool, check and record the Event Data. NOTE: Make sure to record all Event Data stored in the scan tool for future reference in this test procedure. Do all the pressure switches read CLOSED in the Event Data? Yes Perform diagnostics for «P0882-TCM POWER INPUT LOW»(ref-288317-S29281600652008062000000) . Follow instructions as if the DTC is current. No Go to 6) .
6. 6) CHECK IF PRESSURE SWITCHES READ OPEN In the Event Data recorded earlier, do all the pressure switches read open? Yes Go to 7) . No Go to 8) .
7. 7) CHECK FOR LOW LINE PRESSURE In the Event Data recorded earlier, is the Line Pressure less than 40 psi, and significantly below the Desired Line Pressure? Yes Repair as necessary to correct low line pressure. Check fluid level and adjust as necessary. If fluid level is OK, check the Primary Oil Filter weal for a spit, crack, or improperly installed. If the filer and seal are OK, check the Main Regulator Valve in the Oil Pump. Refer to the Service Information for the above procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
8. 8) CHECK IF IN DTC SET IN PARK, NEUTRAL, OR REVERSE In the Event Data recorded earlier, does the Event Data show the OD Pressure Switch DTC set while in Park, Neutral, or Reverse? Yes Go to 18) . No Go to 9) .
9. 9) CHECK IF THE OD PRESSURE SWITCH IS OPEN In the Event Data recorded earlier, did the OD Pressure Switch read OPEN? Yes Go to 10) . No Go to 15) .
10. 10) CHECK FOR LOW LINE PRESSURE In the Event Data recorded earlier, is the Line Pressure less than 40 psi, and significantly below the Desired Line Pressure? Yes Repair as necessary to correct low line pressure. Check the fluid level. Check the Primary Oil Filter seal for a split, crack, or improperly installed. Refer to the Service Information for the proper installation procedure. If the fluid level and filter are OK, check the Main Regulator Valve in the Oil Pump. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 11) .
11. 11) CHECK THE (T9) OD PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Disconnect all PCM harness connectors. Disconnect the Transmission Solenoid/TRS Assembly harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between the (T9) OD Pressure Switch Sense circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T9) OD Pressure Switch Sense circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T9) OD Pressure Switch Sense circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 12) .
12. 12) CHECK IF THE DTC RESETS Reconnect all previously disconnected connectors. With the scan too, erase transmission DTCs. Test drive the vehicle, use the Event Data recorded earlier to help duplicate the conditions when the DTC originality set. Does the DTC P0871 reset? Yes Go to 13) . No Go to 22) .
13. 13) CHECK THE POWERTRAIN CONTROL MODULE Remove the Transmission Control Relay. Operate the vehicle in Drive. Is the transmission slipping while in Drive? Yes Go to 14) . 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 the and program PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
14. 14) CHECK INTERNAL TRANSMISSION Perform an Air Check Transmission Clutch Operation procedure per the Service Information. NOTE: The OD/Rev piston contains a small bleed orifice, a small amount of leakage between the OD and Reverse hydraulic clutch circuits is considered normal. Is there excessive air leakage in any clutch circuit? Yes Check the OD/Rev piston seals and bleed orifice, reaction shaft support seal rings, dribbler orifice assemblies in the reaction shaft support and for poor machine on the pump valve body faces. Refer to the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Repair the Valve Body. Check the OD Accumulator piston and seals, OD bleed orifice, and No. 6 check ball cuts or damage. If no problems are found in the Valve Body, replace the Transmission Solenoid/TRS Assembly. Refer to the Service Information for proper repair procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
15. 15) CHECK PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the Transmission Simulator, turn the Pressure Switch selector switch 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 state of the OD Pressure Switch change from OPEN to CLOSED while pressing the Test button? Yes Go to 16) . No Go to 18) .
16. 16) CHECK IF THE NO. 4 AND/OR NO. 6 CHECK BALL IS CUT OR DAMAGED With the scan tool, erase previously stored DTCs and test drive the vehicle, use the Event Data to help duplicate the conditions when the DTC originality set. Note any DTCs that may set. Remove the Transmission Valve Body per the Service Information. Check the No. 4 and No. 6 Check Balls for cuts or damage. Is the No. 4 and/or No. 6 Check Ball cut or damaged? Yes Replace the No. 4 and/or No. 6 Check Ball and check for clutch debris in the transmission oil pan. If there is excessive debris, perform internal repairs to the OD Clutch Assembly. Refer to the Service Information for proper repair procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 17) .
17. 17) TRANSMISSION SOLENOID/TRS ASSEMBLY Did the DTC P0871 reset during the test drive in the previous step? Yes Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 22) .
18. 18) CHECK THE (T9) OD PRESSURE SWITCH SENSE CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector and connect Miller tool #8815. Disconnect the Transmission Solenoid/TRS 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 Miller tool #8815 to perform diagnosis. Measure the resistance of the (T9) OD Pressure Switch Sense circuit between the Solenoid/TRS Assembly harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T9) OD Pressure Switch Sense circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 19) .
19. 19) CHECK THE (T9) OD PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT 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 «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 20) .
20. 20) CHECK WIRING AND CONNECTORS Using the schematics as a guide, inspect the wiring and connectors. Pay particular attention to all power and ground circuits. Were there any problems found Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 21) .
21. 21) CHECK IF DTC RESETS Reconnect all previously disconnected connectors. Make sure all Event Data is recorded. With the scan tool, erase previously stored DTCs and test drive the vehicle, use the Event Data to help duplicate the conditions when the DTC originality set. Does the DTC P0871 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. If no problems are found, replace the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 22) .
22. 22) 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 «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: In any forward gear with engine speed above 1000 rpm shortly after a shift and every minute thereafter.

1. Set Condition: After a shift into a forward gear, with engine speed above 1000 rpm, the PCM momentarily turns on element pressure to the Clutch circuits that don't have pressure to identify the correct Pressure Switch closes. If the Pressure Switch does not close 2 times, the DTC sets.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 391

1. 1) CHECK FOR RELATED DTCS With the scan tool, read DTCs. Is there any Loss of Prime, TCM Power Input, and/or Line Pressure Sensor DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. If the DTC «P0944-LOSS OF HYDRAULIC PUMP PRIME»(ref-288317-S39544588472008062000000) is present, perform its respective test first. No Go to 2) .
2. 2) CHECK FOR DTC P0765 With the scan tool, read DTCs. Is the DTC P0765 also present? Yes Perform diagnostics for «P0765-UD SOLENOID CIRCUIT»(ref-288317-S01735859442008062000000) . No Go to 3) .
3. 3) CHECK FOR OTHER DTCS With the scan tool, read DTCs. Are any of the DTCs, P0731, P0732, P0733, P0876, and/or P1736 present also? Yes Go to 12) . No Go to 4) .
4. 4) 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 5) . No Go to 15) .
5. 5) CHECK LINE PRESSURE Start the engine. Warm the transmission to 82° C (180° F). Firmly apply the brakes. With the scan tool, monitor the Line Pressure during the following step. Move the shift lever to each gear position, pausing momentarily in each position and record the line pressure reading. Allow the pressure to stabilize for at least 5 seconds in each range. Did the line pressure remain at a steady value between 585 and 655 kPa (85 and 95 psi) in each position? Yes Go to 6) . No Go to 10) .
6. 6) CHECK LINE PRESSURE SENSOR CONNECTION Ignition on, engine not running. With the scan tool, monitor the Line Pressure while firmly pushing the Transmission Line Pressure Sensor connector inwards towards the Transmission. Did the Line Pressure reading on the scan tool change to about 207 kPa (30 psi) or 0.7 volts when the connector was pushed inward? Yes Disconnect and properly reconnect the Line Pressure Sensor connector. Inspect terminals and repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK LINE PRESSURE SENSOR OPERATION Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. 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 while turning the Pressure Switch selector to each of the 3 line pressure positions on the Transmission Simulator. NOTE: All three scan tool Line Pressure readings should be steady and ±14 kPa (2.0 psi) 0.1 volts of the reading specified on the Transmission Simulator. Did the scan tool Line Pressure readings match the specified readings on the Transmission Simulator and remain steady in all three positions? Yes Replace the Line Pressure Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 8) .
8. 8) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect Transmission Simulator. Disconnect the PCM C1 harness connector and connect Miller tool #8815. 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 #8815 to perform diagnosis. Measure the resistance of the (F856) 5-volt Supply circuit between the Line Pressure Sensor harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 9) .
9. 9) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (F856) 5-volt Supply circuit. Is the resistance below 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
10. 10) COMPARE SCAN TOOL TO PRESSURE GAUGE Turn the ignition off to the lock position. Connect the Line Pressure Adapter, Miller tool #8259 and 0-300 psi Test Gauge, Miller tool #C-3293-SP. Refer to the Service Information for proper installation procedure. CAUTION: Apply parking brake. Start the engine. In the following steps, compare the scan tool Line Pressure to the Pressure Gauge readings in each gear. CAUTION: Do not overheat transmission. With the gear selector in park, raise the rpm to 1500, and compare line pressure readings. Firmly apply the brakes, move the gear selector into reverse, raise the rpm to 1500, and compare the line pressure readings. Firmly apply the brakes, move the gear selector into drive, raise the rpm to 1500, and compare the line pressure readings. Does the scan tool Line Pressure readings match the Pressure Gauge readings ± 10 psi? Yes Go to 11) . No Replace the Line Pressure Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
11. 11) CHECK WIRING AND CONNECTORS Turn the ignition off to the lock position. Remove the Line Pressure Adapter, Miller tool #8259 and 0-300 psi Test Gauge, Miller tool #C-3293-SP. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. On the Transmission Simulator, turn the Pressure Switch selector switch to UD. Ignition on, engine not running. With the scan tool, monitor the UD Pressure Switch state while pressing and holding the Pressure Switch test button and wiggling the wire harness and connectors that pertain to the UD Pressure Switch. Did the UD Pressure Switch state change to closed and remain closed while wiggling the wires? Yes Go to 12) . No Go to 14) .
12. 12) CHECK FOR EXCESSIVE DEBRIS Turn the ignition off to the lock position. Remove the Transmission Simulator, Miller tool #8333. Remove and inspect the Transmission Oil Pan per the Service Information. Does the Transmission Oil Pan contain excessive debris or contamination? Yes Repair the cause of the excessive debris in the Transmission Oil Pan. Refer to the Service Information for the proper procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 13) .
13. 13) CHECK THE UD HYDRAULIC CLUTCH CIRCUIT Remove the Valve Body and air check the UD hydraulic clutch circuit (in the case) for leakage per the Service Information. NOTE: The UD hydraulic clutch circuit contains a small bleed orifice. A small amount of air leakage is normal. Was there excessive air leakage noticed during the air check? Yes Repair as necessary. Check the UD clutch piston, piston seals and bleed orifice, reaction shaft support seal rings, and machining of the main mating faces of the pump housing, pump valve body, and reaction shaft support. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Disassemble and inspect the Valve Body and repair as necessary. Inspect the UD Accumulator piston and seals. If no problems are found in the Valve Body, replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
14. 14) CHECK THE (T29) UD PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Disconnect all PCM harness connectors. Disconnect the Transmission Solenoid/TRS Assembly harness connector. NOTE: Make sure the Transmission Solenoid/TRS Assembly harness connector is disconnected. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between the (T29) UD Pressure Switch Sense circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T29) UD Pressure Switch Sense circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T29) UD Pressure Switch Sense circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
15. 15) 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. If the Event Data shows the DTC P0875 set while the Line Pressure was significantly below the Desired Line Pressure reading, check for causes of low line pressure (low fluid level, broken or mis-installed primary oil filter or filter seal, sticking Main Regulator Valve in the Pump Valve Body etc.). If the data shows the DTC set while the Line Pressure reading was significantly higher than the Desired Line Pressure, check the Line Pressure Sensor and related wiring. Where there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Continuously with the ignition on and engine running.

1. Set Condition: This DTC is set if the UD pressure switch is in the wrong state for the current gear. For example, this code would be set if the UD pressure switch remained off while the transmission was in second gear.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 392

Scheme 393

Scheme 394

1. 1) CHECK FOR RELATED DTCS With the scan tool, check for other transmission DTCs. Are there any TCM Power Input, Line Pressure, and/or Loss of Prime DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. If a Loss of Prime DTC is present, perform its respective test first. No Go to 2) .
2. 2) CHECK FOR PRESSURE SWITCH DTCS Are there two or more other pressure switch rationality DTCs present in addition to P0876? Yes Go to 3) . No Go to 4) .
3. 3) CHECK IF ALL PRESSURE SWITCHES READ CLOSED With the scan tool, read and record all Event Data. NOTE: Make sure to record all Event Data stored in the scan tool for future reference in this test procedure. Does the Event Data show all pressure switches reading CLOSED? Yes Perform diagnostics for «P0882-TCM POWER INPUT LOW»(ref-288317-S29281600652008062000000) . Diagnose the symptom as if the DTC is current. No Go to 4) .
4. 4) CHECK FOR OTHER DTCS With the scan tool, read DTCs. Is the DTC P2704 present also? Yes Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 5) .
5. 5) CHECK THE EVENT DATA In the Event Data recorded earlier, does the Event Data display information for the DTC P0876? Yes Go to 6) . No Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform diagnostics for the DTC listed in the Event Data.
6. 6) CHECK IF EVENT DATA WAS SET IN PARK, NEUTRAL OR REVERSE In the Event Data recorded earlier, did the DTC P0876 set in Park, Neutral, or Reverse? Yes Go to 10) . No Go to 7) .
7. 7) CHECK FOR UD PRESSURE SWITCH STATUS In the Event Data recorded earlier, did the DTC P0876 set with the UD Pressure Switch closed? Yes Go to 10) . No Go to 8) .
8. 8) CHECK LINE PRESSURE In the Event Data recorded earlier, is the Line Pressure less than 40 psi, and significantly below the Desired Line Pressure? Yes Repair as necessary to correct low line pressure. Check fluid level and adjust as necessary. If fluid level is OK, check the Primary Oil Filter seal for a split, crack, or improperly installed. If the filter and seal are OK, check the Main Regulator Valve in the Oil Pump. Refer to the Service Information for the above procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 9) .
9. 9) CHECK THE (T29) UD PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Disconnect all PCM harness connectors. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Measure the resistance between the (T29) UD Pressure Switch Sense circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T29) UD Pressure Switch Sense circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T29) UD Pressure Switch Sense circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
10. 10) CHECK THE PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the Transmission Simulator, turn the Pressure Switch selector switch to the UD position. With the scan tool, monitor the UD Pressure Switch state while pressing the Pressure Switch Test button on the Transmission Simulator. Did the state of the UD Pressure Switch change while pressing the Pressure Switch Test button? Yes Go to 14) . No Go to 11) .
11. 11) CHECK THE (T29) UD PRESSURE SWITCH SENSE CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM C4 harness connector and connect Miller tool #8815. 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 #8815 to perform diagnosis. Measure the resistance of the (T29) UD Pressure Switch Sense circuit from the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminal of the special tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T29) UD Pressure Switch Sense circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 12) .
12. 12) CHECK THE (T29) UD PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T29) UD Pressure Switch Sense circuit. Is the resistance below 5.0 ohms? Yes Repair the (T29) UD Pressure Switch Sense circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 13) .
13. 13) CHECK THE (T29) UD PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Disconnect all PCM harness connectors. NOTE: Make sure the Transmission Solenoid/TRS Assembly harness connector is disconnected. Measure the resistance between the (T29) UD Pressure Switch Sense circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T29) UD Pressure Switch Sense circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T29) UD Pressure Switch Sense circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
14. 14) WIGGLE TEST USING THE TRANSMISSION SIMULATOR Perform the steps in the previous test while wiggling the wiring harness and connectors pertaining to the UD Pressure Switch. Did the state of the UD Pressure Switch change while pressing the Pressure Switch Test button? Yes Repair the wiring harness and/or connectors as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 15) .
15. 15) CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY Disconnect the Transmission Simulator and reconnect the Transmission Solenoid/TRS Assembly harness connector. Disconnect the PCM C4 harness connector and connect Miller tool #8815. Measure the resistance between ground and the (T29) UD Pressure Switch Sense circuit in the appropriate terminal of Miller tool #8815. Is the resistance below 5.0 ohms? Yes Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 16) .
16. 16) CHECK IF THE DTC RESETS Reconnect all previously disconnected connectors. With the scan tool, erase all transmission DTCs. Test drive the vehicle. Using the Event Data recorded earlier, try to duplicate the conditions in which the DTC originally set. Does the DTC P0876 reset? Yes Go to 17) . No Go to 18) .
17. 17) CHECK FOR A CUT NO. 2 CHECK BALL Remove the Valve Body per the Service Information. Check the No. 2 check ball for cuts or damage. Is the No. 2 check ball cut or damaged? Yes Replace the No. 2 check ball. Check for excessive clutch debris in the oil pan. If excessive debris is present, check the UD Clutch and repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Check for excessive clutch debris in the oil pan. If excessive debris is present, check the UD Clutch and repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
18. 18) 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. Were there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: When the ignition is turned from "OFF" position to "RUN" position and/or the ignition is turned from "START" position to "RUN" position.

1. Set Condition: This DTC is set when less than 3.0 volts are present at the transmission control relay output circuits at the Powertrain Control Module when the PCM is energizing the relay.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 395

Scheme 396

Scheme 397

Scheme 398

1. 1) CHECK IF THE DTC IS CURRENT With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 0 for this DTC? Yes Go to 2) . No Go to 9) .
2. 2) CHECK THE (A104) FUSED B(+) CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Remove the Transmission Control Relay. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Using a 12-volt test light connected to ground, check the (A104) Fused B(+) circuit in the Transmission Control Relay connector. 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? Yes Go to 3) . No Repair the (A104) Fused B(+) circuit for an open. If the fuse is open make sure to check for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
3. 3) CHECK THE (Z915) TRANSMISSION CONTROL RELAY GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z915) Transmission Control Relay Ground circuit in the Transmission Control Relay connector. Does the test light illuminate brightly? Yes Go to 4) . No Repair the (Z915) Transmission Control Relay Ground circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
4. 4) CHECK THE TRANSMISSION CONTROL RELAY Turn the ignition off to the lock position. Install a substitute relay in place of the Transmission Control Relay. Start the vehicle. With the scan tool, read DTCs. Did the DTC P0882 reset? Yes Go to 5) . No Replace the Transmission Control Relay. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
5. 5) CHECK THE (T16) TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector and connect Miller tool #8815. Disconnect the Transmission Solenoid/TRS 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 Miller tool #8815 to perform diagnosis. Connect a jumper wire between the (A104) Fused B(+) circuit and the Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Using a 12-volt test light connected to ground, check all four (T16) Transmission Control Relay Output circuits in the PCM C4 harness connector and Transmission Solenoid/TRS Assembly harness connector. Does the test light illuminate brightly on all four (T16) Transmission Control Relay Output circuits? Yes Go to 6) . No Repair the (T16) Transmission Control Relay Output circuit(s) for an open or high resistance. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
6. 6) CHECK THE (T16) TRANSMISSION RELAY OUTPUT CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Measure the resistance between ground and the (T16) Transmission Control Relay Output circuit. Is the resistance below 5.0 ohms? Yes Repair the (T16) Transmission Control Relay Output circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) CHECK THE (T15) TRANSMISSION CONTROL RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T15) Transmission Control Relay Control circuit. Is the resistance below 5.0 ohms? Yes Repair the (T15) Transmission Control Relay Control circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 8) .
8. 8) CHECK THE (T15) TRANSMISSION CONTROL RELAY CONTROL CIRCUIT FOR AN OPEN Measure the resistance of the (T15) Transmission Control Relay Control circuit between the Transmission Control Relay connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T15) Transmission Control Relay Control circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
9. 9) 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 «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: When the ignition is turned from "OFF" position to "RUN" position and/or the ignition is turned from "START" position to "RUN" position.

1. Set Condition: This DTC is set if the Powertrain Control Module senses greater than 3.0 volts on the Transmission Control Relay Output circuits prior to a request from the PCM to energize the Transmission Control Relay.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 399

Scheme 400

Scheme 401

1. 1) CHECK IF THE DTC IS CURRENT With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 0 for this DTC? Yes Go to 2) . No Go to 5) .
2. 2) CHECK THE TRANSMISSION CONTROL RELAY Turn the ignition off to the lock position. Disconnect the Transmission Control Relay. NOTE: Note: Check connectors - Clean/repair as necessary. Measure the resistance between the (A104) Fused B(+) circuit and the (T16) Transmission Control Relay Output Circuit of the Transmission Control Relay. Is the resistance above 5.0 ohms? Yes Go to 3) . No Replace the Transmission Control Relay. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
3. 3) CHECK THE (T16) TRANSMISSION RELAY OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE Ignition on, engine not running. Measure the voltage at the (T16) Transmission Control Relay Output circuit in the Transmission Control Relay connector. Is the voltage above 0.5 volts? Yes Repair the (T16) Transmission Control Relay Output circuit for a short to voltage. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 4) .
4. 4) CHECK THE (T15) TRANSMISSION CONTROL RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector and connect Miller tool #8815. Disconnect the Transmission Solenoid/TRS 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 Miller tool #8815 to perform diagnosis. Connect a jumper wire between the (A104) Fused B(+) circuit and the (T16) Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the (T15) Transmission Control Relay Control circuit. Is the voltage above 0.5 volts? Yes Repair the (T15) Transmission Control Relay Control circuit for a short to voltage. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
5. 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 «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: When Powertrain Control Module initially powers up. Due to the integration of the Powertrain and Transmission Control Modules, the transmission part of the PCM has its own specific power and ground circuits.

1. Set Condition: This DTC will set if the PCM powers up and senses the vehicle in a valid forward gear, with no PRNDL DTCs, and an output speed above 800 rpm, approximately 32 Km/h (20 mph).

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: When the ignition is turned from "OFF" position to "RUN" position and/or the ignition is turned from "START" position to "RUN" position.

1. Set Condition: This DTC is set if the Powertrain Control Module senses voltage on any of the pressure switch inputs prior to the Transmission Control Relay being energized.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 402

1. 1) CHECK IF THE DTC IS CURRENT With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 0 for this DTC? Yes Go to 2) . No Go to 4) .
2. 2) PRESSURE SWITCH SENSE CIRCUITS SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector and connect Miller tool #8815. Disconnect the Transmission Solenoid/TRS Assembly harness connector. Remove the Transmission Control Relay. NOTE: 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 Miller tool #8815 to perform diagnosis. Connect a jumper wire between the Fused B(+) circuit and the Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the (T147) 2C, (T48) 4C, (T50) L/R, (T9) OD, and (T29) UD Pressure Switch Sense circuits in Miller tool #8815. Is the voltage above 0.5 volt on any of the measured circuits? Yes Repair the (T147) 2C, (T48) 4C, (T50) L/R, (T9) OD, and/or (T29) UD Pressure Switch Sense circuit(s) for a short to voltage. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 3) .
3. 3) TRANSMISSION SOLENOID/TRS ASSEMBLY Turn the ignition off to the lock position. Remove the jumper wire. NOTE: Do not reinstall the Transmission Relay. Reconnect the Transmission Solenoid/TRS Assembly harness connector. Ignition on, engine not running. Measure the voltage of the (T147) 2C, (T48) 4C, (T50) L/R, (T9) OD, and (T29) UD Pressure Switch Sense circuits in Miller tool #8815. Is the voltage above 0.5 volts on any of the sense circuits? Yes Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
4. 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. Where there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Continuously with the ignition on, engine running, with the transmission in gear.

1. Set Condition: The PCM continuously monitors Actual Line Pressure and compares it to Desired Line Pressure. If the Actual Line Pressure reading is more than 172.4 kPa (25 psi) higher than the Desired Line Pressure, but is less than the highest Line Pressure ever used in the current gear, the DTC sets.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on and engine running.

1. Set Condition: This DTC will set when the monitored Line Pressure Sensor voltage is less than or equal to 0.35 volts for 0.18 seconds.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 403

Scheme 404

1. 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 7) .
2. 2) CHECK PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the scan tool, under Transmission Sensors, monitor the Line Pressure. Using the Transmission Simulator, set the rotary switch to each of the 3 line pressure positions. NOTE: The readings should be within ±14 kPa (2.0 psi) or 0.1 volts on the scan tool to the pressure readings specified on Transmission Simulator. Does the Line Pressure on the scan tool match the line pressures on the Transmission Simulator? Yes Replace the Line Pressure Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 3) .
3. 3) CHECK THE (T38) LINE PRESSURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the PCM C4 harness connector and connect Miller tool #8815. Disconnect the Transmission Simulator, Miller tool #8333. 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 #8815 to perform diagnosis. Measure the resistance between ground and the (T38) Line Pressure Sensor Signal circuit. Is the resistance below 5.0 ohms? Yes Repair the (T38) Line Pressure Sensor Signal circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 4) .
4. 4) CHECK THE (T38) LINE PRESSURE SENSOR SIGNAL CIRCUIT FOR AN OPEN Measure the resistance of the (T38) Line Pressure Sensor Signal circuit between the Line Pressure Sensor harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T38) Line Pressure Sensor Signal circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 5) .
5. 5) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN Disconnect the PCM C1 harness connector and connect Miller tool #8815. Measure the resistance of the (F856) 5-volt Supply circuit between Line Pressure sensor harness connector and the appropriate terminal of Miller tool #8815. Is the resistance below 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 6) .
6. 6) CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND Disconnect the PCM C1 harness connector and connect Miller tool #8815. Measure the resistance between ground and the (F856) 5-volt Supply circuit. Is the resistance below 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
7. 7) 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 «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Continuously with ignition on and engine running.

1. Set Condition: This DTC will set if the monitored Line Pressure Sensor voltage is greater than or equal to 4.75 volts for the period of 0.18 seconds

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 405

Scheme 406

1. 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 6) .
2. 2) PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the scan tool, monitor the Line Pressure. Using the Transmission Simulator, set the rotary switch to each of the 3 line pressure positions. NOTE: The readings should be within ±14 kPa (2.0 psi) or 0.1 volts on the scan tool of the pressure reading specified on Transmission Simulator. Does the 3 line pressures on the scan tool match the Line pressure readings on the Transmission Simulator? Yes Replace the Line Pressure Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 3) .
3. 3) CHECK THE (K900) SENSOR GROUND CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM C2 harness connector and connect Miller tool #8815. 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 #8815 to perform diagnosis. Measure the resistance of the (K900) Sensor Ground circuit from the Line Pressure Sensor harness connector to the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (K900) Sensor Ground circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 4) .
4. 4) CHECK THE (T38) LINE PRESSURE SENSOR SIGNAL CIRCUIT FOR AN OPEN Disconnect the PCM C4 harness connector and connect Miller tool #8815. Measure the resistance of the (T38) Line Pressure Sensor Signal circuit between the Line Pressure Sensor harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T38) Line Pressure Sensor Signal circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 5) .
5. 5) CHECK THE (T38) LINE PRESSURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Remove the Transmission Control Relay. Connect a jumper wire between the (A104) Fused B(+) circuit and the (T16) Transmission Control Relay Output circuit in the Transmission Control Relay connector. Ignition on, engine not running. Measure the voltage of the (T38) Line Pressure Sensor Signal circuit. Is the voltage above 5.5 volts? Yes Repair the (T38) Line Pressure Sensor Signal circuit for a short to voltage. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
6. 6) 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 «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: If the transmission is slipping in any forward gear and all the pressure switches are not indicating pressure, a loss of prime test is run.

1. Set Condition: If the transmission begins to slip in a forward gear and all the pressure switch(s) that should be closed are open a loss of prime test begins. Available elements are turned on by the PCM to see if pump prime exists. The DTC sets if no pressure switch(s) respond.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Ignition on and engine running and after 0.5 seconds.

1. Set Condition: When the monitored AutoStick Up/Down Sense circuit voltage drops below 0.35 volts.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 407

Scheme 408

1. 1) CHECK IF THE DTC IS CURRENT Start the engine in park. With the scan tool, read the AutoStick® voltage. Does the scan tool AutoStick voltage read below 0.35 volts? Yes Go to 2) . No Go to 5) .
2. 2) CHECK THE SHIFT LEVER ASSEMBLY Turn the ignition off to the lock position. Disconnect the Shift Lever Assembly harness connector. Start the engine in park. With the scan tool, read the AutoStick voltage. Does the scan tool AutoStick voltage read below 0.35 volts? Yes Go to 3) . No Replace the Shift Lever Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
3. 3) CHECK THE (T5) AUTOSHIFT UP/DOWN SENSE CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the PCM C3 harness connector and connect Miller tool #8815. 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 #8815 to perform diagnosis. Measure the resistance between ground and the (T5) AutoStick Up/Down Sense circuit. Is the resistance below 5.0 ohms Yes Repair the (T5) AutoStick Up/Down Sense circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 4) .
4. 4) CHECK THE (T5) AUTOSHIFT UP/DOWN SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Measure the resistance between the (T5) AutoStick Up/Down Sense circuit and all other circuits in the Shift Lever Assembly harness connector. Is the resistance below 5.0 ohms between the (T5) AutoStick Up/Down Sense circuit and any other circuit(s) in the Shift Lever Assembly harness connector. Yes Repair the (T5) AutoStick Up/Down Sense circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform QUICK LEARN. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
5. 5) CHECK THE AUTOSTICK VOLTAGE WHILE SHIFTING Start the engine in park. With the brakes firmly applied, shift into AutoStick. With the scan tool, monitor the AutoStick voltage while shifting both Up and Down. Did the scan tool AutoStick voltage drop below 0.35 volts at any given time? Yes Replace the Shift Lever Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 6) .
6. 6) 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 wiring and connectors while checking for any possible open or shorted circuits. Check for any Service Information Tune-ups or Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Ignition on and engine running and after 0.5 seconds.

1. Set Condition: When the monitored AutoStick Up/Down Sense circuit voltage rises above 4.75 volts.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 409

Scheme 410

Scheme 411

Scheme 412

1. 1) CHECK IF THE DTC IS CURRENT Start the engine in park. With the scan tool, read the AutoStick® voltage. Does the scan tool AutoStick voltage read above 4.75 volts? Yes Go to 2) . No Go to 7) .
2. 2) CHECK THE (T5) AUTOSTICK UP/DOWN SENSE CIRCUIT FOR A OPEN Turn the ignition off to the lock position. Disconnect the PCM C3 harness connector and connect Miller tool #8815. 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 #8815 to perform diagnosis. Disconnect the Shift Lever Assembly harness connector. Measure the resistance of the (T5) AutoStick Up/Down Sense circuit between the Shift Lever Assembly harness connector and the appropriate terminal of Miller tool #8815. Is the resistance below 5.0 ohms? Yes Go to 3) . No Repair the (T5) AutoStick Up/Down Sense circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
3. 3) CHECK THE (K900) SENSOR GROUND CIRCUIT FOR AN OPEN Disconnect the PCM C2 harness connector and connect Miller tool #8815. Measure the resistance of the (K900) Sensor Ground circuit between the Shift Lever Assembly harness connector and the appropriate terminal of Miller tool #8815. Is the resistance below 5.0 ohms? Yes Go to 4) . No Repair the (K900) Sensor Ground circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
4. 4) CHECK THE (T5) AUTOSTICK UP/DOWN SENSE CIRCUIT FOR A SHORT TO VOLTAGE Ignition on, engine not running. Measure the voltage of the (T5) AutoStick Up/Down Sense circuit. Is the voltage above 0.5 volts? Yes Repair the (T5) AutoStick Up/Down Sense circuit for a short to voltage. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 5) .
5. 5) CHECK THE (T5) AUTOSTICK UP/DOWN SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Measure the resistance between the (T5) AutoStick Up/Down Sense circuit and all other circuits in the Shift Lever Assembly harness connector. Is the resistance below 5.0 ohms between the (T5) AutoStick Up/Down Sense circuit and any other circuit(s) in the Shift Lever Assembly harness connector. Yes Repair the (T5) AutoStick Up/Down Sense circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 6) .
6. 6) CHECK THE AUTOSTICK SWITCH Reconnect the PCM C2 and C3 harness connectors. Connect a jumper wire between (T5) AutoStick Up/Down Sense circuit and (K900) Sensor Ground circuit in the Shift Lever Assembly harness connector. Ignition on, engine not running. With the scan tool, read the AutoStick voltage. Did the scan tool AutoStick voltage drop below 0.5 volts? Yes Replace the Shift Lever Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 the PCM per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
7. 7) CHECK THE AUTOSTICK VOLTAGE WHILE SHIFTING Start the engine in park. With the brakes firmly applied, shift into AutoStick. With the scan tool, monitor the AutoStick voltage while shifting both low and high. Did the scan tool AutoStick voltage rise above 4.75 volts at any given time? Yes Replace the Shift Lever Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 8) .
8. 8) 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 and connectors while checking for any possible open or shorted circuits. Check for any Service Information Tune-ups or Technical Service Bulletins that may apply. Were there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: In any forward gear with engine speed above 1000 rpm shortly after a shift and every minute thereafter.

1. Set Condition: After a shift into a forward gear, with engine speed above 1000 rpm, the PCM momentarily turns on element pressure to the Clutch circuits that don't have pressure to identify the correct Pressure Switch closes. If the Pressure Switch does not close 2 times, the DTC sets.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 413

1. 1) DETERMINING IF RELATED DTCS ARE PRESENT With the scan tool, read DTCs. Is there any Loss of Prime, TCM Control Input, and/or Line Pressure Sensor DTCs present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. If the DTC «P0944-LOSS OF HYDRAULIC PUMP PRIME»(ref-288317-S39544588472008062000000) is present, perform its respective test first. No Go to 2) .
2. 2) DTC P0770 PRESENT With the scan tool, read DTCs. Is the DTC P0770 also present? Yes Refer to the symptom list and perform diagnostics for «P0770-4C SOLENOID CIRCUIT»(ref-288317-S05357414762008062000000) . No Go to 3) .
3. 3) OTHER DTCS PRESENT With the scan tool, read DTCs. Are the DTCs P0988 and/or P1736 present also? Yes Go to 12) . No Go to 4) .
4. 4) CHECK IF THE DTC IS CURRENT With the scan tool, read DTCs. Is the status Active or is the Starts Since Set counter 0 for this DTC? Yes Go to 5) . No Go to 15) .
5. 5) LINE PRESSURE STAYS THE SAME Start the engine. Warm the transmission to 82° C (180° F). Firmly apply the brakes. With the scan tool, monitor the Line Pressure during the following step. Move the shift lever to each gear position, pausing momentarily in each position and record the line pressure reading. Allow the pressure to stabilize for at least 5 seconds in each range. Did the line pressure remain at a steady value between 585 and 655 kPa (85 and 95 psi) in each position? Yes Go to 6) . No Go to 10) .
6. 6) CHECK LINE PRESSURE SENSOR CONNECTION Ignition on, engine not running. With the scan tool, monitor the Line Pressure while firmly pushing the Transmission Line Pressure Sensor connector inwards towards the Transmission. Did the Line Pressure reading on the scan tool change to about 207 kPa (30 psi) when the connector was pushed inward? Yes Disconnect and properly reconnect the Line Pressure Sensor connector. Inspect terminals and repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 7) .
7. 7) LINE PRESSURE SENSOR OPERATION Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. 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 while turning the Pressure Switch selector to each of the 3 line pressure positions on the Transmission Simulator. 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 scan tool Line Pressure readings match the specified readings on the Transmission Simulator and remain steady in all three positions? Yes Replace the Line Pressure Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 8) .
8. 8) (F856) 5-VOLT SUPPLY CIRCUIT OPEN Turn the ignition off to the lock position. Disconnect Transmission Simulator. Disconnect the PCM C1 harness connector and connect Miller tool #8815. 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 #8815 to perform diagnosis. Measure the resistance of the (F856) 5-volt Supply circuit between the Line Pressure Sensor harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 9) .
9. 9) (F856) 5-VOLT SUPPLY CIRCUIT SHORT TO GROUND Measure the resistance between ground and the (F856) 5-volt Supply circuit. Is the resistance below 5.0 ohms? Yes Repair the (F856) 5-volt Supply circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
10. 10) COMPARE SCAN TOOL TO PRESSURE GAUGE Turn the ignition off to the lock position. Connect the Line Pressure Adapter, Miller tool #8259 and 0-300 psi Test Gauge, Miller tool #C-3293-SP. Refer to the Service Information for proper installation procedure. CAUTION: Apply parking brake. Start the engine. In the following steps, compare the scan tool Line Pressure to the Pressure Gauge readings in each gear. CAUTION: Do not overheat transmission. With the gear selector in park, raise the rpm to 1500, and compare line pressure readings. Firmly apply the brakes, move the gear selector into reverse, raise the rpm to 1500, and compare the line pressure readings. Firmly apply the brakes, move the gear selector into drive, raise the rpm to 1500, and compare the line pressure readings. Does the scan tool Line Pressure readings match the Pressure Gauge readings ± 10 psi? Yes Go to 11) . No Replace the Line Pressure Sensor per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
11. 11) WIRING AND CONNECTORS Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Remove the Line Pressure Adapter, Miller tool #8259 and 0-300 psi Test Gauge, Miller tool #C-3293-SP. Install the Transmission Simulator, Miller tool #8333. On the Transmission Simulator, turn the Pressure Switch selector switch to 4C. Ignition on, engine not running. With the scan tool, monitor the 4C Pressure Switch state while pressing and holding the Pressure Switch test button and wiggling the wire harness and connectors that pertain to the 4C Pressure Switch. Did the 4C Pressure Switch state change to closed and remain closed while wiggling the wires? Yes Go to 12) . No Go to 14) .
12. 12) CHECK FOR EXCESSIVE DEBRIS Turn the ignition off to the lock position. Remove the Transmission Simulator, Miller tool #8333. Remove and inspect the Transmission Oil Pan per the Service Information. Does the Transmission Oil Pan contain excessive debris or contamination? Yes Repair the cause of the excessive debris in the Transmission Oil Pan. Refer to the Service Information for the proper procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 13) .
13. 13) CHECK 4C HYDRAULIC CLUTCH CIRCUIT Remove the Valve Body and air check the 4C hydraulic clutch circuit (in the case) for leakage per the Service Information. NOTE: The 4C hydraulic clutch circuit contains a small bleed orifice. A small amount of air leakage is normal. Was there excessive air leakage noticed during the air check? Yes Repair as necessary. Check the 4C clutch piston, piston seals and bleed orifice assembly. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Disassemble and inspect the Valve Body and repair as necessary. Inspect the 4C Accumulator piston and seals. If no problems are found in the Valve Body, replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
14. 14) (T48) 4C PRESSURE SWITCH SENSE CIRCUIT SHORT TO ANOTHER CIRCUIT Disconnect all PCM harness connectors. Disconnect the Transmission Solenoid/TRS Assembly harness connector. NOTE: Make sure the Transmission Solenoid/TRS Assembly harness connector is disconnected. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between the (T48) 4C Pressure Switch Sense circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T48) 4C Pressure Switch Sense circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T48) 4C Pressure Switch Sense circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
15. 15) 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. If the Event Data shows the DTC P0987 set while the Line Pressure was significantly below the Desired Line Pressure reading, check for causes of low line pressure (low fluid level, broken or mis-installed primary oil filter or filter seal, sticking Main Regulator Valve in the Pump Valve Body etc.). If the data shows the DTC set while the Line Pressure reading was significantly higher than the Desired Line Pressure, check the Line Pressure Sensor and related wiring. Where there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Test Complete.

1. When Monitored: Continuously with the ignition on, engine running, with the transmission in gear.

1. Set Condition: The DTC is set if the 4C Pressure Switch reads open or closed at the wrong time in a given gear.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 414

Scheme 415

1. 1) DETERMINE IF RELATED TCM POWER INPUT DTCS ARE PRESENT With the scan tool, read DTCs. Are there any TCM Power Input DTCs present also? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
2. 2) CHECK THE EVENT DATA With the scan tool, check the Event Data. Does the Event Data show data for DTC P0988? Yes Go to 3) . No Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom.
3. 3) MULTIPLE DTCS PRESENT With the scan tool, read DTCs. Are there two or more related Pressure Switch Sense DTCs present in addition to P0988? Yes Go to 4) . No Go to 7) .
4. 4) RELATED DTC PRESENT With the scan tool, check the Event Data for P0988. NOTE: Make sure to record all Event Data stored in the scan tool for future reference in this test procedure. Do all the pressure switches read CLOSED in the Event Data for P0988? Yes Perform diagnostics for the DTCs «P0882-TCM POWER INPUT LOW»(ref-288317-S29281600652008062000000) and «P0883-TCM POWER INPUT HIGH»(ref-288317-S36468700882008062000000) . No Go to 5) .
5. 5) EVENT DATA READ OPEN In the Event Data recorded earlier, do all the pressure switches read OPEN? Yes Go to 6) . No Go to 7) .
6. 6) LOW LINE PRESSURE In the Event Data recorded earlier, is the Line Pressure less than 40 psi, and significantly below the Desired Line Pressure? Yes Repair as necessary to correct low line pressure. Check fluid level and adjust as necessary. If fluid level is OK, check the Primary Oil Filter seal for a split, crack, or improperly installed. If the filter and seal are OK, check the Main Regulator Valve in the Oil Pump. Refer to the Service Information for the above procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
7. 7) DTC P0871 ALSO PRESENT With the scan tool, read DTCs. Is the DTC P0871 also present? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 8) .
8. 8) EVENT DATA READ PARK REVERSE OR NEUTRAL In the Event Data recorded earlier, does the Event Data show the DTC set in Park, Neutral, or Reverse for P0988? Yes Go to 13) . No Go to 9) .
9. 9) EVENT DATA READ CLOSED In the Event Data recorded earlier, does the Event Data show the 4C Pressure Switch reading CLOSED? Yes Go to 11) . No Go to 10) .
10. 10) PRIMARY OIL FILTER SEAL In the Event Data recorded earlier, is the Line Pressure less than 40 psi, and significantly below the Desired Line Pressure? Yes Repair as necessary to correct low line pressure. Check fluid level and adjust as necessary. If fluid level is OK, check the Primary Oil Filter seal for a split, crack, or improperly installed. If the filter and seal are OK, check the Main Regulator Valve in the Oil Pump. Refer to the Service Information for the above procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 15) .
11. 11) CHECK THE PCM AND WIRING USING THE TRANSMISSION SIMULATOR Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the Transmission Simulator, turn the Pressure Switch selector switch to the 4C position. With the scan tool, monitor the 4C Pressure Switch while pressing the Pressure Switch test button on the Transmission Simulator. Did the state of the 4C Pressure Switch change while pressing the Pressure Switch Test button? Yes Go to 12) . No Go to 13) .
12. 12) TRANSMISSION SOLENOID/TRS ASSEMBLY 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. Where there any problems found? Yes Repair as necessary. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
13. 13) CHECK THE (T48) 4C PRESSURE SWITCH SENSE CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM C4 harness connector. Connect Miller tool #8815 to the PCM C4 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 Miller tool #8815 to perform diagnosis. Measure the resistance of the (T48) 4C Pressure Switch Sense circuit between the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T48) 4C Pressure Switch Sense circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 14) .
14. 14) CHECK THE (T48) 4C PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (T48) 4C Pressure Switch Sense circuit. Is the resistance below 5.0 ohms? Yes Repair the (T48) 4C Pressure Switch Sense circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform Quick Learn. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
15. 15) NO. 5 CHECK BALL CUT OR DAMAGED Turn the Ignition off to the lock position. Remove the Valve Body Assembly per the Service Information. Inspect the No. 5 check ball for any cuts or damage. Inspect the 4C accumulator piston and seals and also the 4C tower seal on top of the valve body. Refer to the Service Information. Where there any problems found? Yes Repair as necessary. Check for excessive clutch debris in the transmission oil pan. If excessive clutch debris is present, repair 4C clutch as necessary. Refer to the Service Information for proper repair procedures. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 16) .
16. 16) EXCESSIVE FLUID LEAKAGE WITH 4C CLUTCH CIRCUIT Air check the 4C Clutch hydraulic circuit. Refer to the Service Information. NOTE: This hydraulic clutch circuit contains a small bleed orifice. Small leakage is considered normal. Was there excessive air leakage in the 4C Clutch hydraulic circuit? Yes Repair as necessary. Refer to the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .

1. When Monitored: Whenever the ignition is in the Run/Start position.

1. Set Condition: This DTC will set whenever Powertrain Control Module is disconnected from Fused B(+) or ground. It will also be set using the scan tool to perform a Battery Disconnect and/or Quick Learn procedure.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Whenever the PRNDL code indicates Temp 3.

1. Set Condition: This DTC sets when conditions for the DTC P1776 are satisfied or 3 unsuccessful attempts to engage 1st gear while the shifter is in the temp 3 zone. This indicates a restricted port at the manual valve because the shifter is not fully engaged in the drive position.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously with the ignition on, engine running, and after the transmission has achieved the proper gear ratio.

1. Set Condition: If the ratio of the Input rpm to the Output rpm does not match the current gear ratio. This DTC can take up to five minutes of problem identification before illuminating the MIL

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: During an attempted shift into 1st gear.

1. Set Condition: This DTC is set if three unsuccessful attempts are made to shift the Solenoid Switch Valve (SSV) into the downshifted position in one given ignition start. This DTC can take up to five minutes to mature before illuminating the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Continuously when performing partial or full EMCC - PEMCC or FEMCC.

1. Set Condition: If the transmission senses the L/R pressure switch closing while performing PEMCC or FEMCC. This DTC will set after two unsuccessful attempts to perform PEMCC or FEMCC. This DTC can take up to five minutes of problem identification before illuminating the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: The gear ratio is monitored continuously while the Transmission is in gear.

1. Set Condition: After a controller reset in neutral and a ratio of input to output, of 1 to 2. This DTC can take up to five minutes of problem identification before illuminating the MIL.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Whenever the engine is running. The L/R clutch volume index (CVI) is updated during a 3-1 or 2-1 manual downshift with throttle angle below 5 degrees. Transmission temperature must be at least 43° C (110° F).

1. Set Condition: When the L/R clutch volume index (CVI) falls below 16.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Whenever the engine is running. The 2C clutch volume index (CVI) is updated during a 3-2 kickdown with throttle angle between 10 and 54 degrees. Transmission temperature must be at least 43° C (110° F).

1. Set Condition: When the 2C CVI falls below 5.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Whenever the engine is running. The OD clutch volume index (CVI) is updated during a 2-3 upshift with throttle angle between 10 and 54 degrees. Transmission temperature must be at least 43° C (110° F).

1. Set Condition: When the OD CVI falls below 5.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Whenever the engine is running. The UD clutch volume index (CVI) is updated during a 4-3 kickdown with throttle angle between 10 and 54 degrees. Transmission temperature must be at least 43° C (110° F).

1. Set Condition: When the UD CVI falls below 11.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Whenever the engine is running. The 4C clutch volume index (CVI) is updated during a 3-4 upshift with throttle angle between 10 and 54 degrees. Transmission temperature must be at least 43° C (110° F).

1. Set Condition: When the 4C CVI falls below 5.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

1. When Monitored: Initially at power-up, then every 10 seconds thereafter. The solenoid circuits will also be tested immediately after a gear ratio or pressure switch error is detected.

1. Set Condition: After three consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error. Note: This DTC is strictly an electrical fault and does not apply to any internal transmission failures.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 416

Scheme 417

Scheme 418

1. 1) DETERMINE IF RELATED TCM POWER INPUT DTCS ARE PRESENT With the scan tool, read Transmission DTCs Are there any TCM Power Input DTCs present also? Yes Refer to the «DIAGNOSTIC CODE INDEX»(ref-288317-S05475944212008062000000) table and perform the appropriate symptom. No Go to 2) .
2. 2) TRANSMISSION SOLENOID/TRS ASSEMBLY Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay will prevent the vehicle from being started in gear. WARNING: The Starter Relay must be removed from the PDC. Failure to do so can result in personal injury or death. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install Transmission Simulator, Miller tool #8333. Ignition on, engine not running. With the scan tool, actuate the MS Solenoid. Monitor the MS Solenoid LED on the Transmission Simulator. Did the MS Solenoid LED on the Transmission Simulator blink on and off? Yes Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 3) .
3. 3) TRANSMISSION SOLENOID/TRS ASSEMBLY With the scan tool, continue to actuate the MS Solenoid for the period of 2 minutes with the Transmission Simulator still connected. After 2 minutes of actuation, with the scan tool, stop the actuation and check for transmission DTCs. Did the DTC P2706 reset during the actuation test? Yes Go to 4) . No Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .
4. 4) (T118) MS SOLENOID CONTROL CIRCUIT SHORT TO ANOTHER CIRCUIT Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333. Disconnect the PCM harness connectors. Measure the resistance between the (T118) MS Solenoid Control circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector. Is the resistance below 5.0 ohms between the (T118) MS Solenoid Control circuit and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector? Yes Repair the (T118) MS Solenoid Control circuit for a short to another circuit(s). Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 5) .
5. 5) (T118) MS SOLENOID CONTROL CIRCUIT OPEN Connect Miller tool #8815 to the PCM C4 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 Miller special tool #8815 to perform diagnosis. Measure the resistance of the (T118) MS Solenoid Control circuit between the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminal of Miller tool #8815. Is the resistance above 5.0 ohms? Yes Repair the (T118) MS Solenoid Control circuit for an open. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . No Go to 6) .
6. 6) (T118) MS SOLENOID CONTROL CIRCUIT SHORT TO GROUND Measure the resistance between ground and the (T118) MS Solenoid Control circuit. Is the resistance below 5.0 ohms? Yes Repair the (T118) MS Solenoid Control circuit for a short to ground. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) . 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 per the Service Information. With the scan tool, perform QUICK LEARN. Perform «45RFE/545RFE TRANSMISSION VERIFICATION TEST»(ref-288317-S29579334702008062000000) .

Scheme 419

1. When Monitored: Every 7 msec. Conditions: 1) Engine speed greater than 500 rpm. 2) Battery voltage greater than 10v but less than 16v.

1. Set Condition: CAN C bus messages not received for 10 seconds.

Diagnose the U0002 CAN C BUS OFF PERFORMANCE as the U0001 CAN C BUS CIRCUIT test. Refer to DIAGNOSIS AND TESTING for diagnostic procedures and for further possible causes.

1. When Monitored: Every 7 msec. with the ignition on.

1. Set Condition: ECM/PCM CAN bus message not received by the Transmission Control System for the period of 10 seconds.

Refer to DIAGNOSIS AND TESTING for diagnostic procedures and for further possible causes.

1. When Monitored: Every 7 msec. Conditions: 1) Engine speed greater than 500 RPM. 2) Battery voltage greater than 10v but less than 16v.

1. Set Condition: CAN C bus messages not received for 10 seconds.

Refer to DIAGNOSIS AND TESTING for diagnostic procedures and for further possible causes.

1. When Monitored: Every 7 msec. Conditions: 1) Engine speed greater than 500 RPM. 2) Battery voltage greater than 10v but less than 16v.

1. Set Condition: CAN C bus messages not received for 10 seconds.

Refer to DIAGNOSIS AND TESTING for diagnostic procedures and for further possible causes.