Drivetrain Control Module (Dtcm) - Electrical Diagnostics: Diagnosis Dodge Durango III

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Scheme 414

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

DIAGNOSTIC TEST

1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, record and erase DTCs. Start the engine and allow it to idle. With the scan tool, read DTCs. Is the DTC active at this time? Yes Go To 2 . No Go To 3 .
2. (T301) SWITCHED BATTERY SOLENOID SUPPLY CIRCUIT VOLTAGE Ignition on, engine not running. Connect a 12-volt test light across the (T301) Switched Battery Solenoid Supply circuit and the (T317) Transfer Case Motor Lock Signal in the Transfer Case Motor C1 harness connector. NOTE: As a failsafe precaution when the Transfer Case Motor harness connectors are disconnected, the DTCs must be erased in the DTCM. Failure to follow this will result in the DTCM detecting this condition and turning OFF the Switched Battery Solenoid Supply circuit. Using the scan tool, erase the DTCs. With the scan tool, actuate the T-Case Motor Solenoid Lock in the DTCM. NOTE: Compare the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes Replace the Transfer Case Motor in accordance with the Service Information. Refer to «MOTOR, SHIFT , REMOVAL»(ref-465986-S36575979272012042300000) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
3. INTERMITTENT WIRING HARNESS AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. DTC IS ACTIVE Ignition on, engine not running. With the scan tool, record and erase DTCs. Test drive the vehicle. Ignition on, engine not running. With the scan tool, read DTCs. Is the status Active for this DTC? Yes Go To 2 . No Go To 4 .
2. TRANSFER CASE INTERNAL CONDITION Turn the ignition off to the lock position. Inspect the Transfer Case in accordance with the Service Information to determine if there are any mechanical conditions that are preventing the Shift Motor from engaging the requested range. Are any mechanical conditions preventing the Shift Motor from engaging the requested range? Yes Repair or replace the Transfer Case in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 3 .
3. TRANSFER CASE MOTOR Turn the ignition off to the lock position. Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit. If any problems are found, repair as necessary and retest. If no other problems are found, replace the Transfer Case Motor in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . Ignition on, engine not running. Test drive the vehicle. With the scan tool, read DTCs. Is the DTC status Active? Yes Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
4. INTERMITTENT WIRING HARNESS AND CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. DTC IS ACTIVE NOTE: If both DTCs C1415-92 and C140A-92 are present, check the DTCM fuse and the B(+) supply to the Integrated Power Module (IPM). Ignition on, engine not running. With the scan tool, record and erase DTCs. Test drive the vehicle. Ignition on, engine not running. With the scan tool, read DTCs. Is the status Active for this DTC? Yes Go To 2 . No Go To 4 .
2. (T315) SHIFT MOTOR CONTROL A CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position. Disconnect the Transfer Case Motor C1 harness connector. Disconnect the DTCM C2 harness connector. Measure the resistance of the (T315) Shift Motor Control A circuit from the Transfer Case Motor harness C1 connector to the DTCM C2 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (T315) Shift Motor Control A circuit for an open or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 3 .
3. (T316) SHIFT MOTOR CONTROL B CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (T316) Shift Motor Control B circuit from the Transfer Case Motor C1 harness connector to the DTCM C2 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (T316) Shift Motor Control B circuit for an open or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
4. INTERMITTENT WIRING AND CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. DTC IS ACTIVE NOTE: Diagnose and repair any system voltage or Transfer Case related DTCs in the DTCM before continuing with this test. Ignition on, engine running. With the scan tool, clear stored DTCs in the DTCM. Test drive the vehicle. During the test drive, move the Transfer Case Selector Switch to each position several times in accordance with the Service Information. With the scan tool, read DTCs in the DTCM. Does this DTC reset? Yes Go To 2 . No Go To 6 .
2. (K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT FOR AN OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position. Disconnect the DTCM C1 harness connector. Disconnect the Transfer Case Motor C2 harness connector. Measure the resistance of the (K504) Drivetrain 5 Volt Supply circuit between the Transfer Case Motor C2 harness connector and the DTCM C1 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (K504) Drivetrain 5 Volt Supply circuit for an open or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 3 .
3. (T313) MODE SENSOR SIGNAL CIRCUIT AN OPEN OR HIGH RESISTANCE Measure the resistance of the (T313) Mode Sensor Signal circuit between the Transfer Case Motor C2 harness connector and the DTCM C1 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (T313) Mode Sensor Signal circuit for an open or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 4 .
4. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT FOR AN OPEN OR HIGH RESISTANCE Measure the resistance of the (K594) Drivetrain Sensor Return circuit between the Transfer Case Motor C2 harness connector and the DTCM C1 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (K594) Drivetrain Sensor Return circuit for an open or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 5 .
5. TRANSFER CLUTCH WORN Ignition on, engine not running. Shift the Transfer case into 4-LOW. With the scan tool, monitor the encoder voltage in the DTCM. Shift the Transfer case into AWD. Is the encoder voltage between 4.625 volts and 4.750? Yes Replace the worn clutch pack assembly in accordance with the Service Information. Refer to «REMOVAL»(ref-465985-S04385886632012042300000) for MP2010 or «REMOVAL»(ref-465986-S23261807412012042300000) for MP3023. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
6. INTERMITTENT WIRING AND CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. DTC IS ACTIVE NOTE: Diagnose and repair any system voltage or Transfer Case related DTCs in the Drive Train Control Module (DTCM) before continuing with this test. Ignition on, engine not running. With the scan tool, clear Stored DTCs in the DTCM and the CCN. Test drive the vehicle. During the test drive, move the Transfer Case Selector Switch to each position several times in accordance with the Service Information. With the scan tool, read DTCs in the DTCM and the CCN. Does this DTC reset? Yes Go To 2 . No Go To 5 .
2. AMBIENT TEMPERATURE SENSOR With the scan tool, monitor the ambient temperature in the Totally Integrated Power Module (TIPM). Is the ambient temperature at room temperature? Yes Go To 3 . No Replace the Ambient Temperature Sensor in accordance with the Service Information. Refer to «SENSOR, AMBIENT TEMPERATURE , REMOVAL»(ref-465952-S21563865342012042300000) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
3. TRANSFER CASE SELECTOR SWITCH Using the wiring diagram/schematic as a guide, inspect the wiring and connectors relative to this circuit. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 4 .
4. CLUSTER/CCN Turn the ignition off to the lock position. Replace the Transfer Case Selector Switch in accordance with the Service Information. Ignition on, engine not running. With the scan tool, clear Stored DTCs in the CCN and the DTCM. Test drive the vehicle. During the test drive, move the Transfer Case Selector Switch to each position several times in accordance with the Service Information. With the scan tool, read DTCs in the CCN and the DTCM. Does this DTC reset? Yes Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
5. INTERMITTENT WIRING AND CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DTCS PRESENT Ignition on, engine not running. With the scan tool, select View DTCs in the ABS Module. Are there any ABS DTCs present? Yes Perform the appropriate diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-465938-S25517752522012042300000) . No Go To 2 .
2. POWER CONTROL MODULE (PCM) DTCS PRESENT Ignition on, engine not running. With the scan tool, select View DTCs in the PCM. Are there any PCM DTCs present? Yes Perform the appropriate diagnostic procedure. Refer to «DIAGNOSTIC CODE INDEX»(ref-466007) . No Go To 3 .
3. DTC IS ACTIVE Ignition on, engine not running. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes Go To 4 . No Go To 5 .
4. VERIFY SET CONDITION NOTE: Check with customer on driving terrain (e.g. mud, sand, snow) for set condition. With the scan tool, erase DTCs. Test drive vehicle on dry paved road. With the scan tool, read DTCs. Is the status Active for this DTC? Yes Replace the Transfer Case in accordance with the Service Information. Refer to «REMOVAL»(ref-465985-S04385886632012042300000) for MP2010 or «REMOVAL»(ref-465986-S23261807412012042300000) for MP3023. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test Complete. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
5. INTERMITTENT WIRING AND CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were there any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read DTCs. Is the status Active for this DTC? Yes Go To 2 . No Go To 9 .
2. RELEARN KISS POINT Ignition on, engine running. Place the Transmission in neutral and apply the brakes firmly. Place the Transfer Case Motor Selector Switch in AUTO. With the scan tool, run the DTCM non-volatile reset command. Place the Transmission in park. Turn the ignition off to the lock position. Wait for 10 seconds, and turn Ignition switch to Ignition on, engine not running. With the scan tool, clear stored DTCs in the DTCM. Switch the Transfer Case Motor Selector Switch to 4-Low and back to AUTO. With the scan tool, read DTCs. Is the DTC status Active? Yes Go To 3 . No Go To 9 .
3. (T315) SHIFT MOTOR CONTROL A CIRCUIT OPEN Turn the ignition off to the lock position. Disconnect the Transfer Case Motor C1 harness connector. Disconnect the DTCM C2 harness connector. Measure the resistance of the (T315) Shift Motor Control A circuit from the Transfer Case Motor C1 harness connector to the DTCM C2 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (T315) Shift Motor Control A circuit for an open or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 4 .
4. (T316) SHIFT MOTOR CONTROL B CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (T316) Shift Motor Control B circuit from the Transfer Case Motor C1 harness connector to the DTCM C2 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (T316) Shift Motor Control B circuit for an open or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 5 .
5. (K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE Disconnect the Transfer Case Motor C2 harness connector. Disconnect the DTCM C1 harness connector. Measure the resistance of the (K504) Drivetrain 5 Volt Supply circuit between the Transfer Case Motor C2 harness connector and the DTCM C1 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (K504) Drivetrain 5 Volt Supply circuit for an open or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 6 .
6. (T313) MODE SENSOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (T313) Mode Sensor Signal circuit between the Transfer Case Motor C2 harness connector and the DTCM C1 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (T313) Mode Sensor Signal circuit for an open or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 7 .
7. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (K594) Drivetrain Sensor Return circuit between the Transfer Case Motor C2 harness connector and the DTCM C1 harness connector. Is the resistance below 5.0 Ohms? Yes Go To 8 . No Repair the (K594) Drivetrain Sensor Return circuit for an open or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
8. TRANSFER CASE Turn the ignition off to the lock position Inspect the Transfer Case to determine if there are any mechanical conditions preventing the shift motor from engaging in the position selected. Are any mechanical conditions preventing the shift motor from engaging in the position selected? Yes Replace the Transfer Case in accordance with the Service Information. Refer to «REMOVAL»(ref-465985-S04385886632012042300000) for MP2010 or «REMOVAL»(ref-465986-S23261807412012042300000) for MP3023. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
9. INTERMITTENT WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DTCS PRESENT Ignition on, engine not running. With the scan tool, select View DTCs in the ABS Module. Are there any ABS DTCs present? Yes Perform the appropriate diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-465938-S25517752522012042300000) . No Go To 2 .
2. DTC IS ACTIVE Ignition on, engine not running. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes Go To 3 . No Go To 5 .
3. AMBIENT TEMPERATURE SENSOR With the scan tool, monitor the ambient temperature in the Totally Integrated Power Module (TIPM). Is the ambient temperature at room temperature? Yes Go To 4 . No Replace the Ambient Temperature Sensor in accordance with the Service Information. Refer to «SENSOR, AMBIENT TEMPERATURE , REMOVAL»(ref-465952-S21563865342012042300000) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
4. VERIFY SET CONDITION NOTE: Check with customer on driving terrain (e.g. mud, sand, snow) for set condition. With the scan tool, erase DTCs. Allow the Transfer Case to cool down. Test drive vehicle on dry paved road. With the scan tool, read DTCs. Is the status Active for this DTC? Yes Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
5. INTERMITTENT WIRING AND CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were there any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. DRIVETRAIN 5 VOLT SUPPLY (REFERENCE) VOLTAGE BELOW 4.8 VOLTS Ignition on, engine not running. With the scan tool, read the Drivetrain 5-volt Supply (Reference) Voltage in the DTCM. Is the voltage below 4.8 volts? Yes Go To 2 . No Go To 4 .
2. TRANSFER CASE MOTOR/ENCODER Turn the ignition off to the lock position Disconnect the Transfer Case Motor/Encoder harness connector. Ignition on, engine not running. With the scan tool, read the 5-volt Supply (Reference) Voltage. Is the voltage above 4.75 volts with the Transfer Case Motor harness disconnected? Yes Replace the Transfer Case Encoder in accordance with the Service Information. Refer to «SENSOR, MODE , REMOVAL»(ref-465986-S23485440652012042300000) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 3 .
3. (K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND Turn the ignition off to the lock position Disconnect the DTCM C1 harness connector. Measure the resistance between ground and the (K504) Drivetrain 5- volt Supply circuit at the Transfer Case Motor harness connector. Is the resistance below 5.0 Ohms? Yes Repair the (K504) Drivetrain 5 Volt Supply circuit for a short to ground. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
4. INTERMITTENT WIRING AND CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. DRIVETRAIN 5 VOLT SUPPLY (REFERENCE) VOLTAGE BELOW 4.8 VOLTS Ignition on, engine not running. With the scan tool, read the Drivetrain 5-volt Supply (Reference) Voltage in the DTCM. Is the voltage below 4.8 volts? Yes Go To 2 . No Go To 4 .
2. TRANSFER CASE ENCODER Turn the ignition off to the lock position Disconnect the Transfer Case Motor/Encoder harness connector. Ignition on, engine not running. With the scan tool, read the 5-volt Supply (Reference) Voltage. Is the voltage above 4.75 volts with the Transfer Case Motor harness disconnected? Yes Replace the Transfer Case Encoder in accordance with the Service Information. Refer to «SENSOR, MODE , REMOVAL»(ref-465986-S23485440652012042300000) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 3 .
3. (K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT SHORT TO GROUND Turn the ignition off to the lock position Disconnect the DTCM C1 harness connector. Measure the resistance between ground and the (K504) Drivetrain 5- volt Supply circuit at the Transfer Case Motor harness connector. Is the resistance below 5.0 Ohms? Yes Repair the (K504) Drivetrain 5 Volt Supply circuit for a short to ground. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
4. INTERMITTENT WIRING AND CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. 5 VOLT SUPPLY (REFERENCE) VOLTAGE IS ABOVE 5.2 VOLTS Ignition on, engine not running. With the scan tool, read the Drivetrain 5-volt Supply (Reference) Voltage in the DTCM. Is the voltage above 5.2 volts? Yes Go To 2 . No Go To 3 .
2. (K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Turn the ignition off to the lock position. Disconnect the Transfer Case Motor harness connector. Disconnect the DTCM C1 harness connector. Ignition on, engine not running. Measure the voltage of the (K504) Drivetrain 5 Volt Supply circuit at Transfer Case Motor C2harness connector. Is there any voltage present? Yes Repair the (K504) Drivetrain 5 Volt Supply circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
3. INTERMITTENT WIRING AND CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. CHARGING SYSTEM DTCS PRESENT Ignition on, engine not running. With the scan tool, read DTCs in the Powertrain Control Module. Are there any Charging System or related voltage DTCs present? Yes Refer to «DIAGNOSTIC CODE INDEX»(ref-466007) and perform the appropriate diagnostic procedure . No Go To 2 .
2. DTC IS ACTIVE With the scan tool, read DTCs in the DTCM. Is the status Active for this DTC? Yes Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 3 .
3. INTERMITTENT WIRING AND CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. CHARGING SYSTEM DTCS PRESENT Ignition on, engine not running. With the scan tool, read DTCs in the Powertrain Control Module. Are there any Charging System or related voltage DTCs present? Yes Perform the appropriate Charging System DTC diagnostic procedures before continuing with this test. Refer to «DIAGNOSTIC CODE INDEX»(ref-466007) . No Go To 2 .
2. DTC IS ACTIVE With the scan tool, read DTCs in the DTCM. Is the status Active for this DTC? Yes Go To 3 . No Go To 5 .
3. (Z916) GROUND CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position Disconnect the DTCM C2 harness connector. Ignition on, engine not running. With a 12-volt test light connected to B+, check the (Z916) Ground circuit in the DTCM C2 harness 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 for each of the Ground circuits? Yes Go To 4 . No Repair the (Z916) Ground circuit for an open circuit or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
4. POWER CIRCUITS OPEN OR HIGH RESISTANCE Disconnect the DTCM C1 harness connector. With a 12-volt test light connected to ground, check the (F943) Fused Ignition Switch Output circuit in the DTCM C1 harness connector and the (A959) Fused B+ circuit in the DTCM C2 harness 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 for each of the circuits? Yes Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Repair the Fused B+ circuit(s) for an open circuit or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
5. INTERMITTENT WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. CHARGING SYSTEM DTCS PRESENT Ignition on, engine not running. With the scan tool, read DTCs in the Powertrain Control Module. Are there any Charging System or related voltage DTCs present? Yes Refer to «DIAGNOSTIC CODE INDEX»(ref-466007) and perform the appropriate diagnostic procedure . No Go To 2 .
2. DTC IS ACTIVE With the scan tool, read DTCs in the DTCM. Is the status Active for this DTC? Yes Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Go To 3 .
3. INTERMITTENT WIRING AND CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times. Look for the data to change other than as expected or for the DTC to reset. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read DTCs in the Drive Train Control Module (DTCM). Is the status Active for this DTC? Yes Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.

1. VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE NOTE: Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding. Turn the ignition on. With the scan tool, read active DTCs. Is this DTC active? Yes Perform the U0001-CAN C Bus diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-465991-S16226542852012042300000) and perform the U0001-CAN C Bus diagnostic procedure. No Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-465945-S21111524872012042300000) . .

1. VERIFY THE DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. Using the scan tool, read the active DTCs. Is the DTC active at this time? Yes Perform the U0100-Lost Communication with PCM diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-465991-S16226542852012042300000) . . No Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-465945-S21111524872012042300000) . .

1. VERIFY THE DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTCs. Is this DTC active at this time? Yes Refer to «DIAGNOSIS AND TESTING»(ref-465991-S16226542852012042300000) and perform the U0101-Lost Communication with TCM diagnostic procedure. No Refer to «DIAGNOSIS AND TESTING»(ref-465945-S21111524872012042300000) and perform the Stored Lost Communication DTCs diagnostic procedure.

1. VERIFY THE DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTCs. Is the DTC active at this time? Yes Refer to «DIAGNOSIS AND TESTING»(ref-465991-S16226542852012042300000) and perform the U0121-00-Lost Communication with Anti-lock Brake System (ABS) Control Module diagnostic procedure. No Refer to «DIAGNOSIS AND TESTING»(ref-465945-S21111524872012042300000) and perform the Stored Lost Communication DTCs diagnostic procedure.

1. VERIFY THE DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTCs. Is the DTC active at this time? Yes Perform the U0141-Lost Communication with IPM (FCM/TIPM) diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-465991-S16226542852012042300000) . . No Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-465945-S21111524872012042300000) . .

1. VERIFY DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read the active DTCs. Is this DTC active? Yes Refer to «DIAGNOSIS AND TESTING»(ref-465991-S16226542852012042300000) and perform the U0212-Lost Communication with SCM diagnostic procedure. No Refer to «DIAGNOSIS AND TESTING»(ref-465945-S21111524872012042300000) and perform the Stored Lost Communication DTCs diagnostic procedure.

1. POWERTRAIN CONTROL MODULE (PCM) DTCS PRESENT Ignition on. With the scan tool, read DTCs in the PCM. Are there any active DTCs present? Yes Refer to «DIAGNOSTIC CODE INDEX»(ref-466007) and perform the appropriate diagnostic procedure . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .

1. TRANSMISSION CONTROL MODULE (TCM) DTCS PRESENT Ignition on, engine not running. With the scan tool, read DTCs in the TCM. Are there any DTCs present? Yes Refer to «DIAGNOSIS AND TESTING»(ref-465984-S41029767842012042300000) and perform the appropriate diagnostic procedure. No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .

1. ABS MODULE DTCS PRESENT Ignition on, engine not running. With the scan tool, read DTCs in the ABS Module. Are there any DTCs present? Yes Refer to «DIAGNOSIS AND TESTING»(ref-465938-S25517752522012042300000) and perform the appropriate diagnostic procedure. No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .

1. STEERING COLUMN CONTROL MODULE DTCS PRESENT Ignition on, engine not running. With the scan tool, read DTCs in the SCCM. Are there any DTCs present? Yes Perform the appropriate diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(ref-465995-S37950809132012042300000) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .

1. DTC IS ACTIVE NOTE: Diagnose all CAN C and CAN Interior bus communication DTCs before continuing. NOTE: This DTC must be active for the results of this test to be valid. Ignition on, engine not running. With the scan tool, record and erase DTCs. Cycle the ignition switch from off to on. With the scan tool, read DTCs. Is the status Active for this DTC? Yes Go To 2 . No Go To 3 .
2. CHECK FOR TOTALLY INTEGRATED POWER MODULE (TIPM) DTCS With the scan tool, read DTCs in the TIPM. Are there any TIPM DTCs present? Yes Refer to «DIAGNOSIS AND TESTING»(ref-465991-S16226542852012042300000) and perform the appropriate diagnostic procedure. No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(ref-465939-S13758382012012042300000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) .
3. INTERMITTENT WIRING HARNESS AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Look for the data to change or for the DTC to reset during the wiggle test. Were any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465996-S24934650192012042300000) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

1. Disconnect all jumper wires and reconnect all previously disconnected components and connectors. With the scan tool, select clear Stored DTCs. Make sure that all accessories are turned off and that the battery is fully charged. Test drive the vehicle in each Transfer Case range and verify proper operation in each range. To select or deselect 2WD, AWD or 4HI mode (if equipped), vehicle speed must be below 88 Kmh (55 mph) with all wheels at vehicle speed. Shifts will not take place with a wheel speed difference of greater than 21 Kmh (13 mph) between the front and rear wheels. To select or deselect 4LO (if equipped), vehicle speed must be below 5 Kmh (3 mph) with the ignition on, engine not running and the transmission in neutral (automatic transmission) or the clutch pedal pressed (manual transmission). To select or deselect Transfer Case Neutral (if equipped), vehicle speed must be 0 Kmh (0 mph) with the ignition on, engine not running, the brake pedal applied, and the transmission in neutral (automatic transmission) or the clutch pedal pressed (manual transmission). Press the Neutral button (if equipped) on the Transfer Case Selector Switch until the Neutral Indicator is illuminated. WARNING: Apply the parking brake. The vehicle may roll with the Transfer Case in neutral. To verify that the Transfer Case is in Neutral, shift the automatic transmission into reverse and release the brake pedal for three seconds or shift the manual transmission into gear and slowly release the clutch pedal. There should be no vehicle movement if the Transfer Case is in Neutral. With the scan tool, read DTCs in the Totally Integrated Power Module (TIPM) and in the Instrument Cluster (CCN). Are there any DTCs present in the TIPM or in the CCN? Yes Refer to «DIAGNOSIS AND TESTING»(ref-465991-S16226542852012042300000) and perform the appropriate diagnostic procedure or, refer to «DIAGNOSIS AND TESTING»(ref-466001-S31341917612012042300000) . No Test complete.

1. DTCM VERIFICATION TEST Disconnect all jumper wires and reconnect all previously disconnected components and connectors. With the scan tool, erase DTCs. Make sure that all accessories are turned off and that the battery is fully charged. Test drive the vehicle and verify proper operation. With the scan tool, read DTCs in the DTCM. Are there any DTCs present in the Drive Train Control Module (DTCM)? Yes Refer to «DIAGNOSIS AND TESTING»(ref-465996-S04379755792012042300000) and perform the appropriate diagnostic procedure. No Repair is complete.