Drivetrain Control Module (Dtcm) - Electrical Diagnostics: Other Dodge Charger VI

WHEN MONITORED

Continuously.

SET CONDITION

A comparison between the tire circumference value contained in the EEPROM and the tire circumference value received on the CAN bus. Programmed value for tire size is not within acceptable range.

POSSIBLE CAUSES

The solenoid is active, no solenoid supply circuit DTCs are present and the battery voltage is normal.

The Drive Train Control Module (DTCM) detects the All Wheel Drive (AWD) solenoid power control is shorted low.

Scheme 313

Scheme 314

Scheme 315

Scheme 316

Scheme 317

Scheme 318

1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read DTCs. Is the DTC active at this time? Yes Go To 2 . No Go To 10 .
2. TRANSFER CASE MOTOR (AWD) OPERATION Turn the ignition off. Disconnect the Transfer Case Motor (AWD) C1 harness connector. Ignition on, engine not running. Using a 12-volt test light, jump across from the (T315) Shift Motor Control A circuit and the (T316) Shift Control Motor B circuit at the Transfer Case Motor C1 harness connector. With the scan tool, actuate the Transfer Case Motor (AWD). Does the test light illuminate brightly and flash on and off? Yes Go To 9 . No Go To 3 .
3. (T316) SHIFT CONTROL MOTOR B CIRCUIT SHORTED TO GROUND Turn the ignition off to the lock position. Disconnect the DTCM harness connector. Measure the resistance between ground and the (T316) Shift Control Motor B circuit at the Transfer Case Motor (AWD) C1 harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (T316) Shift Control Motor B circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 4 .
4. (T316) SHIFT CONTROL MOTOR B CIRCUIT OPEN Measure the resistance of the (T316) Shift Control Motor B circuit between the Transfer Case Motor (AWD) C1 harness connector and the DTCM harness connector. Is the resistance below 5.0 Ohms? Yes Go To 5 . No Repair the open in the (T316) Shift Control Motor B circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
5. (T315) SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (T315) Shift Motor Control A circuit at the Transfer Case Motor (AWD) C1 harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (T315) Shift Motor Control A circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 6 .
6. (T315) SHIFT MOTOR CONTROL A CIRCUIT OPEN Measure the resistance of the (T315) Shift Motor Control A circuit between the Transfer Case Motor (AWD) C1 harness connector and the DTCM harness connector. Is the resistance below 5.0 Ohms? Yes Go To 7 . No Repair the open in the (T315) Shift Motor Control A circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
7. TRANSFER CASE MOTOR (T316) SHIFT CONTROL MOTOR B CIRCUIT SHORTED INTERNALLY Turn the ignition off to the lock position. Connect the Transfer Case Motor (AWD) C1 harness connector. Measure the resistance between ground and the (T316) Shift Control Motor B circuit at the DTCM harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (T316) Shift Control Motor B circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 8 .
8. DRIVE TRAIN CONTROL MODULE (DTCM) NOTE: Before continuing, check the DTCM harness connector terminals for corrosion, damage or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wiring harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace the Drive Train Control Module (DTCM) in accordance with Service Information. Refer to «MODULE, DRIVETRAIN CONTROL, REMOVAL»(ref-481399-S27639586382012062200000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
9. TRANSFER CASE MOTOR (AWD) NOTE: Before continuing, check the Transfer Case Motor jumper harness connector terminals for corrosion, damage, or terminals push out, repair/replace as necessary. Using the schematics as a guide, inspect the wiring harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace Transfer Case Clutch Coil in accordance with Service Information. Refer to «COIL, CLUTCH, REMOVAL»(ref-481461-S22741463262012062200000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
10. INTERMITTENT WIRING HARNESS AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring harness and connectors specific to this circuit. Wiggle test the wiring harness and connectors while checking for shorted and open circuits. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Test Complete.

The solenoid is active, no solenoid supply circuit DTCs are present and the battery voltage is normal.

The Drive Train Control Module (DTCM) detects the Transfer Case Motor is shorted to voltage.

Scheme 319

Scheme 320

1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read DTCs. Is the DTC active at this time? Yes Go To 2 . No Go To 10 .
2. TRANSFER CASE MOTOR (AWD) OPERATION Turn the ignition off to the lock position. Disconnect the Transfer Case Motor (AWD) C1 harness connector. Ignition on, engine not running. Using a 12-volt test light, jump across from the (T315) Shift Motor Control A circuit and the (T316) Shift Control Motor B circuit at the Transfer Case Motor C1 harness connector. With the scan tool, actuate the Transfer Case Motor (AWD). Does the test light illuminate brightly when flashing on and off? Yes Go To 9 . No Go To 3 .
3. (T316) SHIFT CONTROL MOTOR B CIRCUIT SHORTED TO VOLTAGE Turn the ignition off to the lock position. Disconnect the DTCM harness connector. Ignition on, engine not running. Measure the voltage between (T316) Shift Control Motor B circuit and ground. Is there any voltage present? Yes Repair the short to voltage in the (T316) Shift Control Motor B circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 4 .
4. (T316) SHIFT CONTROL MOTOR B CIRCUIT OPEN Turn the ignition off to the lock position. Measure the resistance of the (T316) Shift Control Motor B circuit between the Transfer Case Motor (AWD) C1 harness connector and the DTCM harness connector. Is the resistance below 5.0 Ohms? Yes Go To 5 . No Repair the open in the (T316) Shift Control Motor B circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
5. (T315) SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO VOLTAGE Ignition on, engine not running. Measure the voltage between (T315) Shift Control Motor A circuit and ground. Is there any voltage present? Yes Repair the short to ground in the (T315) Shift Motor Control A circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 6 .
6. (T315) SHIFT MOTOR CONTROL A CIRCUIT OPEN Turn the ignition off to the lock position. Measure the resistance of the (T315) Shift Motor Control A circuit between the Transfer Case Motor (AWD) C1 harness connector and the DTCM harness connector. Is the resistance below 5.0 Ohms? Yes Go To 7 . No Repair the open in the (T315) Shift Motor Control A circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
7. TRANSFER CASE MOTOR (T316) SHIFT CONTROL MOTOR B CIRCUIT SHORTED INTERNALLY Connect the Transfer Case Motor (AWD) C1 harness connector. Measure the resistance between ground and the (T316) Shift Control Motor B circuit at the DTCM harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (T316) Shift Control Motor B circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 8 .
8. DRIVE TRAIN CONTROL MODULE (DTCM) NOTE: Before continuing, check the DTCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace the Drive Train Control Module (DTCM) in accordance with Service Information. Refer to «MODULE, DRIVETRAIN CONTROL, REMOVAL»(ref-481399-S27639586382012062200000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
9. TRANSFER CASE MOTOR (AWD) NOTE: Before continuing, check the Transfer Case Motor jumper harness connector terminals for corrosion, damage, or terminals push out, repair/replace as necessary. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace Transfer Case Clutch Coil in accordance with Service Information. Refer to «COIL, CLUTCH, REMOVAL»(ref-481461-S22741463262012062200000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
10. INTERMITTENT WIRING HARNESS AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring harness and connectors specific to this circuit. Wiggle test the wiring harness and connectors while checking for shorted and open circuits. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Test Complete.

C145D-AWD CLUTCH POWER/RETURN CONTROL CIRCUIT OPEN

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

The solenoid is active, no solenoid supply circuit DTCs are present and the battery voltage is normal.

The Drive Train Control Module (DTCM) detects the AWD Solenoid Power Control is shorted low.

Continuously.

The Drive Train Control Module (DTCM) detects the Front Axle Lock Control circuit is shorted low or open.

Scheme 321

Scheme 322

Scheme 323

1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, record and erase DTCs. With the scan tool, read DTCs. Is the status Active for this DTC? Yes Go To 2 . No Go To 7 .
2. DRIVE TRAIN CONTROL RELAY Turn the ignition off to the lock position. Remove the Drive Train Control Relay. Install a known good relay. Ignition on, engine not running. With the scan tool, erase DTCs. Cycle the ignition. With the scan tool, read DTCs. Does the DTC reset? Yes Go To 3 . No Replace the Drive Train Control Relay. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
3. (F348) DRIVE TRAIN CONTROL RELAY CONTROL CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position. Remove the Drive Train Control Relay. Disconnect the DTCM harness connector. Connect a jumper wire between the (F348) Drive Train Control Relay Control circuit and ground. Ignition on, engine not running. Using a 12-volt test light connected to 12-volts, check the (F348) Drive Train Control Relay Control circuit. 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 4 . No Repair the (F348) Drive Train Control Relay Control circuit for an open or high resistance. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
4. (G304) FRONT AXLE LOCK CONTROL CIRCUIT SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the Front Axle Disconnect (FAD) Module harness connector. Measure the resistance between ground and the (G304) Front Axle Lock Control circuit. Is the resistance below 5.0 Ohms? Yes Repair the (G304) Front Axle Lock Control circuit for a short to ground. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 5 .
5. (G304) FRONT AXLE LOCK CONTROL CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (G304) Front Axle Lock Control circuit between the DTCM harness connector and the FAD Module harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (G304) Front Axle Lock Control circuit for an open or high resistance. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 6 .
6. DRIVE TRAIN CONTROL MODULE (DTCM) Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit. Were any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace the Drive Train Control Module (DTCM) in accordance with Service Information. Refer to «MODULE, DRIVETRAIN CONTROL, REMOVAL»(ref-481399-S27639586382012062200000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
7. INTERMITTENT WIRING HARNESS AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring harness and connectors specific to this circuit. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Test Complete.

Continuously.

The Drive Train Control Module (DTCM) detects the Front Axle Lock Control circuit is shorted high.

Scheme 324

1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, erase DTCs. With the scan tool, read DTCs. Is the DTC active at this time? Yes Go To 2 . No Go To 6 .
2. (G304) FRONT AXLE LOCK CONTROL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off to the lock position. Disconnect the DTCM harness connector. Disconnect the FAD Module harness connector. Ignition on, engine not running. Measure the voltage between ground and the (G304) Front Axle Lock Control circuit. Is any there voltage present? Yes Repair the short to voltage in the (G304) Front Axle Lock Control circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 3 .
3. FRONT AXLE DISCONNECT (FAD) MODULE SHORTED TO VOLTAGE Turn the ignition off to the lock position. Connect the FAD Module harness connector. Ignition on, engine not running. Measure the voltage between ground and the (G304) Front Axle Lock Control circuit at the DTCM harness connector. Is any there voltage present? Yes Go To 5 . No Go To 4 .
4. DRIVE TRAIN CONTROL MODULE (DTCM) Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit. Were any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace the Drive Train Control Module (DTCM) in accordance with Service Information. Refer to «MODULE, DRIVETRAIN CONTROL, REMOVAL»(ref-481399-S27639586382012062200000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
5. FRONT AXLE DISCONNECT (FAD) MODULE Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit. Were any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace the Front Axle Disconnect (FAD) Module in accordance with the Service Information. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
6. INTERMITTENT WIRING HARNESS AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring harness and connectors specific to this circuit. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Test Complete.

Ignition on.

The Drive Train Control Module (DTCM) detects an overheat condition due to excessive difference in speed across the Transfer Case from hard driving conditions (Mud, Sand, Snow, 2WD Chassis dynamometer etc.).

Scheme 325

1. ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DTCS PRESENT Ignition on, engine not running. With the scan tool, read DTCs in the ABS Module. Are there any ABS DTCs present? Yes Refer to «ABS - DIAGNOSIS AND TESTING»(ref-481415-S27152086002012062200000) and perform the appropriate diagnostic procedure. No Go To 2 .
2. VERIFY THE DTC IS ACTIVE With the scan tool, read DTCs. Is the DTC active at this time? Yes Go To 3 . No Go To 6 .
3. VERIFY SET CONDITION NOTE: Check with customer on driving terrain (mud, sand, snow) for set condition. Allow the Transfer Case to cool down. With the scan tool, erase DTCs. Test drive vehicle on a straight dry paved road. With the scan tool, read DTCs. Is the status Active for this DTC? Yes Go To 4 . No Go To 6 .
4. (K504) DRIVE TRAIN 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND Turn the ignition off to the lock position. Disconnect the Transfer Case Motor C2 harness connector. Disconnect the DTCM harness connector. Measure the resistance between ground and the (K504) Drive Train 5 Volt Supply circuit in the DTCM harness connector. Is the resistance below 5.0 Ohms? Yes Repair the (K504) Drive Train 5 Volt Supply circuit for a short to ground. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 5 .
5. DRIVE TRAIN CONTROL MODULE (DTCM) Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit. Were any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace the Drive Train Control Module (DTCM) in accordance with Service Information. Refer to «MODULE, DRIVETRAIN CONTROL, REMOVAL»(ref-481399-S27639586382012062200000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
6. INTERMITTENT 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 test the wiring harness and connectors while checking for shorted and open circuits. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Test Complete.

C147A-TRANSFER CASE TEMPERATURE SENSOR HIGH

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

Ignition on.

The Drive Train Control Module (DTCM) detects an overheat condition due to excessive difference in speed across the Transfer Case from hard driving conditions (Mud, Sand, Snow, 2WD Chassis dynamometer).

Scheme 326

Scheme 327

Scheme 328

Scheme 329

1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, erase DTCs. With the scan tool, read DTCs. Is the DTC active at this time? Yes Go To 2 . No Go To 7 .
2. (K594) DRIVE TRAIN SENSOR RETURN CIRCUIT OPEN Turn the ignition off to the lock position. Disconnect the DTCM harness connector. Disconnect the Transfer Case Motor C2 harness connector. Measure the resistance of the (K594) Drive Train Sensor Return circuit between the DTCM harness connector and Transfer Case Motor C2 harness connector. Is the resistance below 5.0 Ohms? Yes Repair the (K594) Drive Train Sensor Return circuit for an open. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 3 .
3. (K504) DRIVE TRAIN 5-VOLT SUPPLY CIRCUIT OPEN Measure the resistance of the (K504) Drive Train 5-volt Supply circuit between the DTCM harness connector and Transfer Case Motor C2 harness connector. Is the resistance below 5.0 Ohms? Yes Go To 4 . No Repair the (K504) Drive Train 5-volt Supply circuit for an open. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
4. (K504) DRIVE TRAIN 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Ignition on, engine not running. Measure the voltage between ground and the (K504) Drive Train 5-volt Supply circuit in the DTCM harness connector. Is the voltage above 7.0 volts? Yes Repair the (K504) Drive Train 5-volt Supply circuit for a short to voltage. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 5 .
5. DRIVE TRAIN THERMISTOR SENSOR Turn the ignition off to the lock position. Connect the Transfer Case Motor C2 harness connector. Measure the resistance between the (K504) Drive Train 5-volt Supply circuit and the (K594) Drive Train Sensor Return circuit in the DTCM harness connector. Is the resistance above 100K Ohms? Yes Replace the Drive Train Thermistor Sensor in accordance with the Service Information. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 6 .
6. DRIVE TRAIN CONTROL MODULE (DTCM) Using the wiring diagram/schematic as a guide, inspect all wiring harness and connectors that pertain to this circuit. Were any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace the Drive Train Control Module (DTCM) in accordance with Service Information. Refer to «MODULE, DRIVETRAIN CONTROL, REMOVAL»(ref-481399-S27639586382012062200000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
7. INTERMITTENT WIRING HARNESS AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring harness and connectors specific to this circuit. Wiggle test the wiring harness and connectors while checking for shorted and open circuits. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Test Complete.

C147B-FRONT AXLE DISCONNECT SENSOR CIRCUIT PERFORMANCE

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

Continuously.

The Drive Train Control Module (DTCM) detects the Front Axle Lock Control circuit is shorted low.

Scheme 330

Scheme 331

Scheme 332

1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, record and erase DTCs. With the scan tool, read DTCs. Is the DTC active at this time? Yes Go To 2 . No Go To 11 .
2. DRIVE TRAIN CONTROL RELAY Turn the ignition off to the lock position. Remove the Drive Train Control Relay. Install a known good relay. Ignition on, engine not running. With the scan tool, erase DTCs. Cycle the ignition. With the scan tool, read DTCs. Does the DTC remain active? Yes Go To 3 . No Replace the Drive Train Control Relay. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
3. (F348) DRIVE TRAIN CONTROL RELAY CONTROL CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position. Remove the FAD Relay. Disconnect the DTCM harness connector. Connect a jumper wire between the (F348) Drive Train Control Relay Control circuit and ground. Ignition on, engine not running. Using a 12-volt test light connected to 12-volts, check the (F348) Drive Train Control Relay Control circuit. 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 4 . No Repair the (F348) Drive Train Control Relay Control circuit for an open or high resistance. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
4. (G303) FRONT AXLE LOCK SIGNAL CIRCUIT SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the FAD Module harness connector. Ignition on, engine not running. Measure the voltage between ground and the (G303) Front Axle Lock Signal circuit in the DTCM harness connector. Is any there voltage present? Yes Repair the (G303) Front Axle Lock Signal circuit for a short to voltage. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 5 .
5. (G303) FRONT AXLE LOCK SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off to the lock position. Measure the resistance between ground and the (G303) Front Axle Lock Signal Control circuit in the DTCM harness connector. Is the resistance below 5.0 Ohms? Yes Repair the (G303) Front Axle Lock Signal circuit for a short to ground. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 6 .
6. (G303) FRONT AXLE LOCK SIGNAL CIRCUIT OPEN Measure the resistance of the (G303) Front Axle Lock Signal circuit between the DTCM harness connector and the FAD Module harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (G303) Front Axle Lock Signal circuit for an open or high resistance. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 7 .
7. (G304) FRONT AXLE LOCK CONTROL CIRCUIT OPEN Measure the resistance of the (G304) Front Axle Lock Control circuit between the DTCM harness connector and the FAD Module harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (G304) Front Axle Lock Control circuit for an open or high resistance. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 8 .
8. (T315) SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO VOLTAGE Turn the ignition off to the lock position. Disconnect the Transfer Case Motor (AWD) C1 harness connector. Ignition on, engine not running. Measure the voltage between (T315) Shift Control Motor A circuit and ground. Is there any voltage present? Yes Repair the short to ground in the (T315) Shift Motor Control A circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 9 .
9. (T316) SHIFT CONTROL MOTOR B CIRCUIT SHORTED TO VOLTAGE Measure the voltage between (T316) Shift Control Motor B circuit and ground. Is there any voltage present? Yes Repair the short to voltage in the (T316) Shift Control Motor B circuit. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 10 .
10. DRIVE TRAIN CONTROL MODULE (DTCM) Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit. Were any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace the Drive Train Control Module (DTCM) in accordance with Service Information. Refer to «MODULE, DRIVETRAIN CONTROL, REMOVAL»(ref-481399-S27639586382012062200000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
11. INTERMITTENT WIRING HARNESS AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring harness and connectors specific to this circuit. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Test Complete.

C147C-FRONT AXLE DISCONNECT POWER CIRCUIT LOW

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

Continuously.

The Drive Train Control Module (DTCM) detects the Front Axle Lock Control circuit is shorted low.

Scheme 333

1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, record and eras e DTCs. With the scan tool, read DTCs. Is the DTC Active at this time? Yes Go To 2 . No Go To 6 .
2. DRIVE TRAIN CONTROL RELAY Turn the ignition off to the lock position. Remove the Drive Train Control Relay. Install a known good relay. Ignition on, engine not running. With the scan tool, erase DTCs. Cycle the ignition. With the scan tool, read DTCs. Does the DTC reset? Yes Go To 3 . No Replace the Drive Train Control Relay. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
3. (F348) DRIVE TRAIN CONTROL RELAY CONTROL CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position. Remove the FAD Relay. Disconnect the DTCM harness connector. Connect a jumper wire between the (F348) Drive Train Control Relay Control circuit and ground. Ignition on, engine not running. Using a 12-volt test light connected to 12-volts, check the (F348) Drive Train Control Relay Control circuit. 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 4 . No Repair the (F348) Drive Train Control Relay Control circuit for an open or high resistance. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
4. (F348) DRIVE TRAIN CONTROL RELAY CONTROL CIRCUIT SHORTED TO GROUND Turn the ignition off to the lock position. Measure the resistance between ground and the (F348) Drive Train Control Relay Control circuit. Is resistance less than 5.0 Ohms? Yes Repair the (G303) Front Axle Lock Signal circuit for a short to ground. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Go To 5 .
5. DRIVE TRAIN CONTROL MODULE (DTCM) Using the wiring diagram/schematic as a guide, inspect all wiring and harness connectors that pertain to this circuit. Were any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace the Drive Train Control Module (DTCM) in accordance with Service Information. Refer to «MODULE, DRIVETRAIN CONTROL, REMOVAL»(ref-481399-S27639586382012062200000) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
6. INTERMITTENT WIRING HARNESS 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 test the wiring harness and connectors while checking for shorted and open circuits. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset. Were there any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Test Complete.

C147D-FRONT AXLE DISCONNECT POWER SUPPLY CIRCUIT HIGH

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

Continuously.

The Drive Train Control Module (DTCM) detects the Front Axle Lock Control circuit is open.

Continuously.

The Drive Train Control Module (DTCM) detects that system voltage is below 8.5 volts for 60 seconds with engine RPM greater than 1500.

Scheme 334

Scheme 335

Scheme 336

1. CHARGING SYSTEM DTCS PRESENT Ignition on, engine not running. With the scan tool, read DTCs in the PCM. Are there any Charging System or related voltage DTCs present? Yes Refer to «CHARGING SYSTEM - DIAGNOSIS AND TESTING»(ref-481437-S26423230732012062200000) and perform the appropriate charging system or battery diagnostic procedure. No Go To 2 .
2. VERIFY THE DTC IS ACTIVE With the scan tool, read DTCs. Is the DTC active at this time? Yes Go To 3 . No Go To 6 .
3. (A913) FUSED (B+) CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position Disconnect the DTCM harness connector. Ignition on, engine not running. With a 12-volt test light connected to ground, check the (A913) Fused (B+) circuit in the DTCM 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? Yes Go To 4 . No Repair the (A913) Fused (B+) circuit for an open circuit or high resistance. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
4. (F348) DRIVETRAIN CONTROL RELAY CONTROL CIRCUIT OPEN OR HIGH RESISTANCE With a 12-volt test light connected to ground, check the (F348) Drivetrain Control Relay Control circuit in the DTCM 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? Yes Go To 5 . No Repair the (F348) Drivetrain Control Relay Control circuit for an open circuit or high resistance. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
5. (Z901) GROUND CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position With a 12-volt test light connected to B+, check the (Z901) Ground circuit in the DTCM 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? Yes Replace the Drive Train Control Module (DTCM) in accordance with the Service information. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Repair the (Z901) Ground circuit for an open circuit or high resistance. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
6. 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. Were any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Test complete.

Continuously.

The Drive Train Control Module (DTCM) detects that system voltage is above 16.0 volts for 60 seconds with engine RPM greater than 1500.

With the ignition on and no system undervoltage or overvoltage condition present.

The Drive Train Control Module (DTCM) detects that the Drivetrain Sensor Supply voltage is above 7.5 volts for 300 ms

Scheme 337

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 C2 harness connector. Disconnect the DTCM harness connector. Ignition on, engine not running. Measure the voltage of the (K504) Drivetrain 5 Volt Supply circuit at DTCM harness connector. Is there any voltage present? Yes Repair the (K504) Drivetrain 5 Volt Supply circuit for a short to voltage. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service information. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) .
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. Were any problems found? Yes Repair as necessary. Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE - DTCM VERIFICATION TEST»(ref-481474-S25904731152012062200000) . No Test complete.

With the ignition on.

The Drive Train Control Module (DTCM) has detected a failure internal to the controller.

Continuously when the ignition is on and battery voltage between 10 and 16 volts.

The controller detects an open, short to ground or a short to voltage on the CAN C Bus circuit.

Ignition run time is greater than one second.

Battery voltage between 9 and 16 volts.

Engine run time greater than three seconds.

Bus messages not received from the Powertrain Control Module (PCM) for approximately two to five seconds.

With the ignition on.

The battery voltage between 10 volts and 16 volts.

Body Control Module (BCM) is configured correctly.

Bus messages not received from the TCM for approximately 500ms.

Ignition run time is greater than one second.

Battery voltage between 9 and 16 volts.

Engine run time greater than three seconds.

Bus messages not received from the Body Control Module (BCM) for approximately two to five seconds.

Continuously when the ignition is on and the battery voltage between 10.0 and 16.0 Volts.

Body Control Module (BCM) is configured correctly.

Bus messages not received from the Body Control Module (BCM) for approximately two to five seconds.

With the ignition on.

Battery voltage between 10 volts and 16 volts.

If the Drive Train Control Module (DTCM) fails to receive bus messages from the Steering Control Module (SCM) for approximately 500 ms.

With the ignition on for four seconds, no CAN bus circuit error condition present, no lost communication with Powertrain Control Module (PCM) condition present and no system undervoltage or overvoltage condition present.

The Drive Train Control Module (DTCM) is receiving implausible data for pedal position, engine RPM, torque or engine coolant temperature from the PCM.

With the ignition on for four seconds, no CAN bus circuit error condition present, no lost communication with Transmission Control Module (TCM) condition present and no system undervoltage or overvoltage condition present.

The Drive Train Control Module (DTCM) is receiving implausible data for gear or PRNDL position from the TCM.

With the ignition on for four seconds, no CAN bus circuit error condition present, no lost communication with Anti-lock Brake System (ABS) Module condition present and no system undervoltage or overvoltage condition present.

The Drive Train Control Module (DTCM) is receiving implausible data for vehicle speed, wheel speeds, brake switch status, longitudinal acceleration, yaw rate or lateral acceleration from the ABS Module.

With the ignition on for four seconds, no CAN bus circuit error condition present, no lost communication with Steering Control Module (SCM) condition present and no system undervoltage or overvoltage condition present.

The Drive Train Control Module (DTCM) is receiving implausible data for sensor status from the SCM.