Drivetrain Control Module (dtcm) - Electrical Diagnostics Jeep Grand Cherokee WK2

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Scheme 398

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

WHEN MONITORED

With the ignition on and no system undervoltage or overvoltage or supply voltage low conditions present.

SET CONDITION

Sensor input voltage is below a specified value for a calibrated amount of time.

POSSIBLE CAUSES

Scheme 399

Scheme 400

Scheme 401

Scheme 402

Scheme 403

1. T-CASE POSITION SENSOR VOLTAGE BELOW 0.4 OF A VOLT NOTE: If DTCs C1403-11 and C2110-11 are both present, perform the diagnostic procedure for C2110-11 before continuing with this test procedure. Ignition on, engine not running. With the scan tool, read the T-Case Position Sensor voltage in the DTCM. Is the voltage below 0.4 of a volt? Yes Go To 2 . No Go To 8 .
2. (K504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT FOR VOLTAGE Turn the ignition off to the lock position. Disconnect the Transfer Case Motor C2 harness connector. Ignition on, engine not running. Measure the voltage of the (K504) Drivetrain 5-volt Supply circuit at the Transfer Case Motor C2 harness connector. Choose an answer that matches the voltage measured? Below 4.5 volts Go To 3 . Above 5.5 volts Go To 4 . Between 4.5 volts and 5.5 volts Go To 5 .
3. (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. Measure the resistance of the (K504) Drivetrain 5-volt Supply circuit between the DTCM C1 and the Transfer Case Motor C2 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 4 .
4. (K504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Measure the voltage of the (K504) Drivetrain 5-volt Supply circuit at the Transfer Case Motor C2 harness connector. Is the voltage above 5.5 volts? Yes Repair the (K504) Drivetrain 5-volt Supply circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 5 .
5. (T313) MODE SENSOR SIGNAL 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 (T313) Mode Sensor Signal circuit at the Transfer Case Motor harness connector. Is the resistance below 5.0 Ohms? Yes Repair the (T313) Mode Sensor Signal circuit for a short to ground. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 6 .
6. (T313) MODE SENSOR SIGNAL CIRCUIT OPEN Measure the resistance of the (T313) Mode Sensor Signal circuit between the DTCM C1 harness connector and the Transfer Case Motor harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (T313) Mode Sensor Signal circuit for an open. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 7 .
7. TRANSFER CASE MOTOR/ENCODER Turn the ignition off to the lock position Reconnect the DTCM C1 harness connector. Connect a jumper wire between the (T313) Mode Sensor Signal circuit and the (K504) Drivetrain 5 volt supply circuit at the Transfer Case Motor C2 harness connector. Ignition on, engine not running. With the scan tool, read the T-Case Position Sensor voltage in the DTCM. The displayed voltage should be between 4.5 volts and 5.5 volts with the jumper wire in place. Does the voltage display as described? Yes Replace the Transfer Case Motor in accordance with the Service Information. Refer to «MOTOR, SHIFT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
8. 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 DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1403-12-TRANSFER CASE RANGE POSITION SENSOR - CIRCUIT SHORT TO BATTERY

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

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

The sensor voltage is above a specified value for a calibrated amount of time.

Scheme 404

Scheme 405

1. T-CASE POSITION SENSOR VOLTAGE ABOVE 4.8 VOLTS NOTE: If DTCs C1403-12 and C2110-12 are both present, perform the diagnostics procedure for C2110-1212 before continuing with this test procedure. Ignition on, engine not running. With the scan tool, read the T-Case Position Sensor voltage in the DTCM. Is the voltage above 4.8 volts? Yes Go To 2 . No Go To 6 .
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. Ignition on, engine not running. Measure the voltage of the (K504) Drivetrain 5-volt Supply circuit at the Transfer Case Motor C2 harness connector. Is the voltage above 5.5 volts? Yes Repair the (K504) Drivetrain 5-volt Supply circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 3 .
3. (T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE Measure the voltage of the (T313) Mode Sensor Signal circuit at the Transfer Case Motor C2 harness connector. Is the voltage above 5.5 volts? Yes Repair the (T313) Mode Sensor Signal circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 4 .
4. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT OPEN 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. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 5 .
5. TRANSFER CASE MOTOR/ENCODER Turn the ignition off to the lock position Connect a jumper wire between the (K594) Drivetrain Sensor Return circuit and the (T313) Mode Sensor Signal circuit in the Transfer Case Motor C2 harness connector. Ignition on, engine not running. With the scan tool, read the T-Case Position Sensor voltage in the DTCM. NOTE: Remove the jumper wire before continuing. Is the voltage below 0.2 of a volt? Yes Replace the Transfer Case Sensor in accordance with the Service Information. Refer to «SENSOR, MODE , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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. 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1403-8F-TRANSFER CASE RANGE POSITION SENSOR - ERRATIC

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

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

The Drive Train Control Module (DTCM) detects excessive voltage fluctuation on the Mode Sensor Signal circuit.

Scheme 406

Scheme 407

Scheme 408

1. DTC IS ACTIVE NOTE: This DTC sets when the Drive Train Control Module (DTCM) detects excessive voltage fluctuation on the Mode Sensor Signal circuit. Perform a thorough inspection of all wiring and connectors between the sensor and the control module. 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 14 .
2. (K504) DRIVETRAIN 5-VOLT SUPPLY VOLTAGE ERRATIC Turn the ignition off to the lock position Disconnect the Transfer Case Motor C2 harness connector. Ignition on, engine not running. Measure the voltage of the (T504) Drivetrain 5-volt Supply circuit at the Transfer Case Motor harness connector. NOTE: Voltage should be approximately 5.0 volts and steady. Compare any slight fluctuations found to a known good circuit in order to verify voltmeter functionality. Is the voltage approximately 5.0 volts and steady? Yes Go To 6 . No Go To 3 .
3. (K504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT SHORT TO VOLTAGE Turn the ignition off to the lock position Disconnect the DTCM C1 harness connector. Ignition on, engine not running. Measure the voltage of the (K504) Drivetrain 5-volt Supply circuit at the Transfer Case Motor C2 harness connector. Monitor the voltmeter while performing a wiggle test on the wiring harness and connectors. Is any voltage detected on the circuit during the wiggle test? Yes Repair the (K504) Drivetrain 5-volt Supply circuit for an intermittent short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 4 .
4. (K504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE 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. Monitor the ohmmeter while performing a wiggle test on the wiring harness and connectors. Is the resistance ever above 5.0 Ohms during the wiggle test? Yes Repair the (K504) Drivetrain 5-volt Supply circuit for an intermittent open circuit or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 5 .
5. (K504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (K504) Drivetrain 5-volt Supply circuit at the Transfer Case Motor C2 harness connector. Monitor the ohmmeter while performing a wiggle test on the wiring harness and connectors. Is the resistance ever below 5.0 Ohms during the wiggle test? Yes Repair the (K504) Drivetrain 5-volt Supply circuit for an intermittent short to ground. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
6. T-CASE POSITION SENSOR VOLTAGE Turn the ignition off to the lock position Reconnect the DTCM C1 harness connector. Connect a jumper wire between the (T313) Mode Sensor Signal circuit and the (K594) Drivetrain Sensor Return circuit in the Transfer Case Motor C2 harness connector. Ignition on, engine not running. With the scan tool read the T-Case Position Sensor Voltage in the DTCM while performing a wiggle test on the wiring and connectors between the sensor and the control module. NOTE: Voltage should be approximately 0.0 volts and steady. Is the T-Case Position Sensor Voltage approximately 0.0 volts and steady? Yes Go To 12 . No Go To 7 .
7. (T313) MODE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE NOTE: Remove the previously installed jumper wire. Turn the ignition off to the lock position Disconnect the DTCM C1 harness connector. Ignition on, engine not running. Measure the voltage of the (T313) Mode Sensor Signal circuit at the Transfer Case Motor harness connector. Monitor the voltmeter while performing a wiggle test on the wiring harness and connectors. Is any voltage detected on the circuit during the wiggle test? Yes Repair the (T313) Mode Sensor Signal circuit for an intermittent short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 8 .
8. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT SHORT TO VOLTAGE Measure the voltage of the (K594) Drivetrain Sensor Return circuit at the Transfer Case Motor C2 harness connector. Monitor the voltmeter while performing a wiggle test on the wiring harness and connectors. Is any voltage detected on the circuit during the wiggle test? Yes Repair the (K594) Drivetrain Sensor Return circuit for an intermittent short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 9 .
9. (T313) MODE SENSOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position. Measure the resistance of the (T313) Mode Sensor Signal circuit between the Transfer Case Motor C2 harness connector and the DTCM C1 harness connector. Monitor the ohmmeter while performing a wiggle test on the wiring harness and connectors. Is the resistance ever above 5.0 Ohms during the wiggle test? Yes Repair the (T313) Mode Sensor Signal circuit for an intermittent open circuit or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 10 .
10. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (K594) Drivetrain Sensor Return circuit between the Transfer Case Motor harness connector and the DTCM C1 harness connector. Monitor the ohmmeter while performing a wiggle test on the wiring harness and connectors. Is the resistance ever above 5.0 Ohms during the wiggle test? Yes Repair the (K594) Drivetrain Sensor Return circuit for an intermittent open circuit or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 11 .
11. (T313) MODE SENSOR SIGNAL CIRCUIT SHORT TO GROUND Measure the resistance between ground and the (T313) Mode Sensor Signal circuit at the Transfer Case Motor C1 harness connector. Monitor the ohmmeter while performing a wiggle test on the wiring harness and connectors. Is the resistance ever below 5.0 Ohms during the wiggle test? Yes Repair the (T313) Mode Sensor Signal circuit for an intermittent short to ground. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 12 .
12. TRANSFER CASE MOTOR NOTE: This DTC sets when the DTCM detects excessive voltage fluctuation on the Mode Sensor Signal circuit. Perform a thorough inspection of all wiring and connectors between the sensor and the control module. Using the schematic as a guide, inspect the Drive Train Control Module (DTCM) power and ground circuits. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 13 .
13. TRANSFER CASE MOTOR/ENCODER Replace the Transfer Case Motor/ Encoder in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . Test drive the vehicle. With the scan tool, read the DTCs in 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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.
14. 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1403-92-TRANSFER CASE RANGE POSITION SENSOR - PERFORMANCE OR INCORRECT OPERATION

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

Ignition on. Battery voltage between 9 and 16 volts. No Range Position Sensor low or high voltage conditions present.

During a blocked shift attempt, motor current indicates motor movement, but the sensor value change is less than a specified value.

Scheme 409

1. DTC IS ACTIVE NOTE: If DTCs C1403-92 and C1406-11 are both present, perform the diagnostic procedure for C1406-11 before continuing with this test procedure. Ignition on, engine not running. NOTE: Repair any system undervoltage or overvoltage DTCs that are set in this module before proceeding. With the scan tool, read DTCs in the DTCM. Is the DTC status Active at this time? Yes Go To 2 . No Go To 5 .
2. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position Disconnect the Transfer Case Motor harness C2 connector. Disconnect the DTCM C1 harness connector. 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 high resistance or open in the (K594) Drivetrain Sensor Return circuit. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 3 .
3. (K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT FOR VOLTAGE Reconnect the DTCM C1 harness connector. Connect a jumper wire between the (T313) Mode Sensor Signal circuit and the (K504) Drivetrain Sensor 5 Volt Supply circuit at the Transfer Case Motor C2 harness connector. Ignition on, engine not running. With the scan tool, read the T-Case Position Sensor voltage. The displayed voltage should be between 4.5 volts and 5.5 volts with the jumper wire in place. Does the voltage display as described? Yes Go To 4 . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
4. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT FOR VOLTAGE Turn the ignition off to the lock position Connect a jumper wire between the (T313) Mode Sensor Signal circuit and the (K594) Drivetrain Sensor Return circuit at the Transfer Case Motor C2 harness connector. Ignition on, engine not running. With the scan tool, read the T-Case Position Sensor voltage. The displayed voltage should be between 0.0 volts and 0.4 of a volt with the jumper wire in place. Does the voltage display as described? Yes Replace the Transfer Case Motor/Encoder in accordance with the Service Information. Refer to «SENSOR, MODE , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
5. 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1406-11-TRANSFER CASE BRAKE CONTROL - CIRCUIT SHORT TO GROUND

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

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

The Drive Train Control Module (DTCM) detects that the Transfer Case Motor Lock circuit diagnostic input is low when output is off.

Scheme 410

Scheme 411

1. VERIFY THE DTC IS ACTIVE Turn the ignition off to the lock position. 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 4 .
2. (T301) SWITCHED BATTERY SOLENOID SUPPLY CIRCUIT SHORTED TO GROUND Turn the ignition off to the lock position Disconnect the Transfer Case Motor C1 harness connector. Disconnect the DTCM C1 harness connector. Measure the resistance between ground and the (T301) Switched Battery Solenoid Supply circuit. Is the resistance below 5.0 Ohms? Yes Repair the (T301) Switched Battery Solenoid Supply circuit for a short to ground. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 3 .
3. (T301) SWITCHED BATTERY SOLENOID SUPPLY VOLTAGE Reconnect the DTCM C1 harness connector. 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 either the Transfer Case Motor harness connectors are disconnected, the DTCs must be cleared 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 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
4. 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1406-12-TRANSFER CASE BRAKE CONTROL - CIRCUIT SHORT TO BATTERY

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

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

The Drive Train Control Module (DTCM) detects that the Transfer Case Motor Lock Circuit diagnostic input is high when the output is on.

Scheme 412

Scheme 413

Scheme 414

Scheme 415

1. VERIFY THE 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 DTC active at this time? Yes Go To 2 . No Go To 7 .
2. (T301) SWITCHED BATTERY SOLENOID SUPPLY CIRCUIT OPEN Turn the ignition off to the lock position Disconnect the Transfer Case C1 Motor harness connector. Disconnect the DTCM C1 harness connector. Measure the resistance of the (T301) Switched Battery Solenoid Supply circuit between the Transfer Case Motor harness connector and the DTCM C1 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (T301) Switched Battery Solenoid Supply circuit for an open. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 3 .
3. (T317) TRANSFER CASE MOTOR LOCK SIGNAL CIRCUIT OPEN Measure the resistance of the (T317) Transfer Case Motor Lock Signal circuit between the Transfer Case Motor C1 harness connector and the DTCM C1 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (T317) Transfer Case Motor Lock Signal circuit for an open. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 4 .
4. (T301) SWITCHED BATTERY SOLENOID SUPPLY CIRCUIT SHORTED TO VOLTAGE Ignition on, engine not running. Measure the voltage of the (T301) Switched Battery Solenoid Supply circuit in the Transfer Case Motor harness connector. Is any voltage present? Yes Repair the (T301) Switched Battery Solenoid Supply circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 5 .
5. TRANSFER CASE MOTOR Turn the ignition off to the lock position Reconnect the Transfer Case Motor harness connector. Measure the resistance of the (T317) Transfer Case Motor Lock Signal circuit and the (T301) Switched Battery Solenoid Supply in the DTCM C1 harness connector. Is the resistance greater than 10.0 Ohms? Yes Replace the Transfer Case Motor in accordance with the Service Information. Refer to «MOTOR, SHIFT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 6 .
6. DRIVE TRAIN CONTROL MODULE (DTCM) Reconnect the DTCM C1 harness connector. Ignition on, engine not running. With the scan tool, erase DTCs. With the scan tool, read DTCs. Does the DTC C1406-12-TRANSFER CASE BRAKE CONTROL - CIRCUIT SHORT TO BATTERY set? Yes Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 7 .
7. 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1406-92-TRANSFER CASE BRAKE CONTROL - PERFORMANCE OR INCORRECT OPERATION

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

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

1. The Drive Train Control Module (DTCM) detects an excessive voltage variation on the Mode Sensor Signal circuit.

2. The Drive Train Control Module (DTCM) performs an error correction procedure too frequently.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C140A-13-TRANSFER CASE MOTOR CONTROL - CIRCUIT OPEN

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

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

The Drive Train Control Module (DTCM) detects an open circuit on one of the Transfer Case Step Motor Control circuits.

Scheme 416

Scheme 417

Scheme 418

Scheme 419

Scheme 420

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 7 .
2. (T315) STEP 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) Step 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) Step Motor Control B circuit for an open. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 3 .
3. (T316) STEP MOTOR CONTROL B CIRCUIT OPEN Measure the resistance of the (T316) Step 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) Step Motor Control B circuit for an open. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 4 .
4. (T315) STEP MOTOR CONTROL A CIRCUIT VOLTAGE Ignition on, engine not running. Measure the voltage of the (T315) Step Motor Control A circuit at the Transfer Case Motor C1 harness connector. Is the voltage above 0.5 of a volt? Yes Repair the (T315) Step Motor Control A circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 5 .
5. (T316) STEP MOTOR CONTROL B CIRCUIT VOLTAGE Measure the voltage of the (T316) Step Motor Control B circuit at the Transfer Case Motor C1 harness connector. Is the voltage above 0.5 of a volt? Yes Repair the (T316) Step Motor Control B circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 6 .
6. TRANSFER CASE MOTOR Reconnect the Transfer Case Motor C1 harness connector. Measure the resistance between the (T315) Step Motor Control A circuit and the (T316) Step Motor Control B circuit at the DTCM C2 harness connector. Is the resistance below 5.0 Ohms? Yes Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Transfer Case Motor in accordance with the Service Information. Refer to «MOTOR, SHIFT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
7. 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C140A-92-TRANSFER CASE MOTOR CONTROL - PERFORMANCE OR INCORRECT OPERATION

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

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

A faulted condition is detected in the H-bridge driver.

Scheme 421

Scheme 422

Scheme 423

1. DTC 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 DTC active? Yes Go To 2 . No Go To 5 .
2. (T315) STEP MOTOR CONTROL A CIRCUIT SHORTED TO GROUND Turn the ignition off to the lock position. Disconnect the DTCM C2 harness connector. Disconnect the Transfer Case Motor C1 harness connector. Measure the resistance between ground and the (T315) Step Motor Control A circuit at the Transfer Case Motor C1 harness connector. Is the resistance below 5.0 Ohms? Yes Repair the (T315) Step Motor Control A circuit for a short to ground. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 3 .
3. (T316) STEP MOTOR CONTROL B CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (T316) Step Motor Control B circuit at the Transfer Case Motor harness connector. Is the resistance below 5.0 Ohms? Yes Repair the (T316) Step Motor Control B circuit for a short to ground. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Go To 4 .
4. (T315) STEP MOTOR CONTROL A CIRCUIT SHORTED TO THE (T316) SHIFT MOTOR CONTROL A CIRCUIT Measure the resistance between the (T315) Step Motor Control A circuit and the (T316) Step Motor Control B circuit at the Transfer Case Motor harness connector. Is the resistance below 5.0 Ohms? Yes Repair the short between the (T315) Step Motor Control A circuit and the (T316) Step Motor Control B circuit. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
5. 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C140E-00-TRANSFER CASE MOTOR BLOCKED

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

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

The Drive Train Control Module (DTCM) is unable to engage the requested range.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1415-92- TRANSFER CASE MOTOR "CURRENT" - PERFORMANCE OR INCORRECT OPERATION

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

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

1. Current reading greater than 1A for 200 msec with no motor activation.

2. Current reading never greater than 1A during a completed range or neutral shift.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1438-00-TRANSFER CASE DIFFERENTIAL CLUTCH WORN

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

The ignition on, engine running. No Under/Overvoltage, and/or encoder error DTCs present. When shifted into 4-Low or in 4-high.

The Drive Train Control Module (DTCM) is unable to fully lock the T-Case (in Either High or Low) because the T-Case clutch is worn.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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 «MP2010 - REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp2010-transfer-case-service-information__removal) or «MP3023 - REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information__removal) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1444-00-TRANSFER CASE MOTOR OVERUSE

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

With the ignition on.

A calibrated motor abuse temperature limit has been achieved. The Drive Train Control Module (DTCM) monitors the motor use and has determined that excessive motor activations have occurred. This DTC will be stored after Transfer Case Motor has cooled down.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#message-center-service-information) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1472-92-TRANSFER CASE CLUTCH CONTROL - PERFORMANCE OR INCORRECT OPERATION

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 etc.).

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/anti-locktraction-control/#antilock-brake-system-abs-electrical-diagnostics) . 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 - 3.0L DIESEL»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#30l-diesel-diagnostic-code-index) or «DIAGNOSTIC CODE INDEX - NGC»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) . 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 «MP2010 - REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp2010-transfer-case-service-information__removal) or «MP3023 - REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information__removal) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test Complete. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1476-00-TRANSFER CASE CLUTCH POSITION OUT OF RANGE

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

With the ignition on and no system under voltage or over voltage condition present.

The Drive Train Control Module (DTCM) is unable to engage the requested range.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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 «MP2010 - REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp2010-transfer-case-service-information__removal) or «MP3023 - REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information__removal) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C1477-4B-TRANSFER CASE CLUTCH - OVER TEMPERATURE

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 etc.).

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/anti-locktraction-control/#antilock-brake-system-abs-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#message-center-service-information) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C2108-11-DRIVETRAIN SUPPLY VOLTAGE - CIRCUIT SHORT TO GROUND

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

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 below 2.5 volts for 300 mS.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C2110-11-SENSOR SUPPLY 1 VOLTAGE - CIRCUIT SHORT TO GROUND

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

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 below 2.5 volts for 300 mS.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/transfer-case/#mp3023-transfer-case-service-information) . Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C2110-12-SENSOR SUPPLY 1 VOLTAGE - CIRCUIT SHORT TO BATTERY

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

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

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C2129-16-BATTERY VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD

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

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 424

Scheme 425

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 - 3.0L DIESEL»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#30l-diesel-diagnostic-code-index) or «DIAGNOSTIC CODE INDEX - NGC»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) . 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. 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
4. POWER CIRCUITS OPEN OR HIGH RESISTANCE Disconnect the DTCM C1 harness connector. Ignition on, engine not running. 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Repair the Fused B+ circuit(s) for an open circuit or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C2129-17-BATTERY VOLTAGE - CIRCUIT VOLTAGE ABOVE THRESHOLD

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

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.

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 - 3.0L DIESEL»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#30l-diesel-diagnostic-code-index) or «DIAGNOSTIC CODE INDEX - NGC»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C212A-16-SYSTEM VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD

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

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.

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 - 3.0L DIESEL»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#30l-diesel-diagnostic-code-index) or «DIAGNOSTIC CODE INDEX - NGC»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Repair the Fused B+ circuit(s) for an open circuit or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C212A-17-SYSTEM VOLTAGE - CIRCUIT VOLTAGE ABOVE THRESHOLD

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

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.

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 - 3.0L DIESEL»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#30l-diesel-diagnostic-code-index) or «DIAGNOSTIC CODE INDEX - NGC»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . No Test complete, the condition or conditions that originally set this DTC are not present at this time.

C2201-00-FDCM/DTCM INTERNAL

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

With the ignition on.

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

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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.

U0001-00-CAN C BUS

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

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

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

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#totally-integrated-power-module-tipm-dtcs-b10b4-to-b25ae) and perform the U0001-CAN C Bus diagnostic procedure. No Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#communication-non-dtc-based-diagnostics) . .

U0100-00-LOST COMMUNICATION WITH PCM

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

Continuously when the ignition is on.

The battery voltage between 10 and 16 Volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

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

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#totally-integrated-power-module-tipm-dtcs-b10b4-to-b25ae) . . No Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#communication-non-dtc-based-diagnostics) . .

U0101-00-LOST COMMUNICATION WITH TCM

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

Bus messages not received from the Transmission Control Module (TCM) for approximately 500ms.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#totally-integrated-power-module-tipm-dtcs-b10b4-to-b25ae) and perform the U0101-Lost Communication with TCM diagnostic procedure. No Refer to «DIAGNOSIS AND TESTING»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#communication-non-dtc-based-diagnostics) and perform the Stored Lost Communication DTCs diagnostic procedure.

U0121-00-LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE

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

Continuously when the ignition is on.

The battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Anti-lock Brake System (ABS) Module for approximately two to five seconds.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#totally-integrated-power-module-tipm-dtcs-b10b4-to-b25ae) and perform the U0121-00-Lost Communication with Anti-lock Brake System (ABS) Control Module diagnostic procedure. No Refer to «DIAGNOSIS AND TESTING»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#communication-non-dtc-based-diagnostics) and perform the Stored Lost Communication DTCs diagnostic procedure.

U0141-00-LOST COMMUNICATION WITH IPM (FCM/TIPM)

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

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Integrated Power Module (TIPM) for approximately two to five seconds.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#totally-integrated-power-module-tipm-dtcs-b10b4-to-b25ae) . . No Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to «DIAGNOSIS AND TESTING»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#communication-non-dtc-based-diagnostics) . .

U0212-00-LOST COMMUNICATION WITH SCM (SAS)

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

If the controller fails to receive bus messages from the Steering Control Module (SAS) for approximately 500 ms.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#totally-integrated-power-module-tipm-dtcs-b10b4-to-b25ae) and perform the U0212-Lost Communication with SCM diagnostic procedure. No Refer to «DIAGNOSIS AND TESTING»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#communication-non-dtc-based-diagnostics) and perform the Stored Lost Communication DTCs diagnostic procedure.

U0401-00-IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM

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

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.

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 - 3.0L DIESEL»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#30l-diesel-diagnostic-code-index) or «DIAGNOSTIC CODE INDEX - NGC»(/jeep/grand-cherokee/wk2-2010-2013/remont/testing-diagnostics/#36l-57l-diagnostic-code-index) 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .

U0402-00-IMPLAUSIBLE DATA RECEIVED FROM TCM

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

With the ignition on for four seconds, no CAN BUS circuit error condition present, no lost communication with 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 Transmission Control Module (TCM).

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/automatic-trans/#transmission-control-module-tcm-electrical-diagnostics) 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .

U0415-00-IMPLAUSIBLE DATA RECEIVED FROM ABS

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

With the ignition on for four seconds, no CAN BUS circuit error condition present, no lost communication with ABS 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.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/anti-locktraction-control/#antilock-brake-system-abs-electrical-diagnostics) 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .

U0429-00-IMPLAUSIBLE DATA RECEIVED FROM SCM

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

With the ignition on for 4 seconds, no CAN BUS circuit error condition present, no lost communication with 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.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/cruise-control-systems/#steering-control-module-scm-electrical-diagnostics) . No Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .

U0431-00-IMPLAUSIBLE DATA RECEIVED FROM IPM (FCM/TIPM)

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

With the ignition on for four seconds, no CAN BUS circuit error condition present, no lost communication with TIPM condition present, and no system undervoltage or overvoltage condition present.

The Drive Train Control Module (DTCM) is receiving no message or implausible data for ambient temperature or the transfer case selector switch.

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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#totally-integrated-power-module-tipm-dtcs-b10b4-to-b25ae) 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) . Perform the DTCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) .
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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) . 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 Perform the appropriate diagnostic procedure. Refer to «TIPM - DIAGNOSIS AND TESTING»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#totally-integrated-power-module-tipm-dtcs-b10b4-to-b25ae) , or refer to «CCN - DIAGNOSIS AND TESTING»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#cabin-compartment-node-ccn-electrical-diagnostics) . 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»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#drivetrain-control-module-dtcm-electrical-diagnostics) and perform the appropriate diagnostic procedure. No Repair is complete.

See also:
• MOTOR, SHIFT , REMOVAL
• MODULE, DRIVETRAIN CONTROL , REMOVAL
• MP2010 - REMOVAL
• MP3023 - REMOVAL
• SENSOR, AMBIENT TEMPERATURE , REMOVAL
• DIAGNOSIS AND TESTING
• DIAGNOSTIC CODE INDEX - 3.0L DIESEL
• DIAGNOSTIC CODE INDEX - NGC
• DIAGNOSIS AND TESTING
• DIAGNOSIS AND TESTING
• DIAGNOSIS AND TESTING
• DIAGNOSIS AND TESTING
• CCN - DIAGNOSIS AND TESTING
• C1403-11
• C1403-12
• C1403-8F
• C1403-92
• C1406-11
• C1406-12
• C1406-92
• C140A-13
• C140A-92
• C140E-00
• C1415-92
• C1438-00
• C1444-00
• C1472-92
• C1476-00
• C1477-4B
• C2108-11
• C2110-11
• C2110-12
• C2129-16
• C2129-17
• C212A-16
• C212A-17
• C2201-00
• U0001-00
• U0100-00
• U0101-00
• U0121-00
• U0141-00
• U0212-00
• U0401-00
• U0402-00
• U0415-00
• U0429-00
• U0431-00