Final Drive Control Module (Fdcm) - Electrical Diagnostics: Other Jeep Liberty II

Monitor Conditions

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

Set Conditions

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

Possible Causes

Scheme 328

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Scheme 330

1. DTC IS ACTIVE NOTE: If DTCs C1403 and C1407 are both present, refer to the diagnostics for «C1407»(ref-350109-S22515225312009121400000) before continuing with this 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 Final Drive Control Module. Is the DTC status Active at this time? Yes Go to step 2 No Go to step 5
2. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT HIGH RESISTANCE OR OPEN Turn the ignition off to the lock position Disconnect the Transfer Case Motor harness connector. Disconnect the FDCM C1 harness connector. Measure the resistance of the (K594) Drivetrain Sensor Return circuit between the Transfer Case Motor harness connector and the Final Drive Control Module 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 3
3. (K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT FOR VOLTAGE Reconnect the FDCM C1 harness connector. Connect a jumper wire between the (T313) Mode Sensor Signal circuit and the (K504) Drivetrain Sensor Return circuit at the Transfer Case Motor 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 step 4 No Replace the Final Drive Control Module in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) .
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 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 Mode Sensor in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) No Replace the Final Drive Control Module in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) .
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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.

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

1. Set Condition: Sensor input voltage is below a specified value for a calibrated amount of time.

Scheme 331

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Scheme 333

Scheme 334

1. T-CASE POSITION SENSOR VOLTAGE BELOW 0.4 OF A VOLT NOTE: If DTCs C1404 and C2112 are both present, refer to the diagnostics procedure for «C2112»(ref-350109-S21596293882009121400000) before continuing. Ignition on, engine not running. With the scan tool, read the T-Case Position Sensor voltage in the FDCM. Is the voltage below 0.4 of a volt? Yes Go to step 2 No Go to step 8
2. (K504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT FOR VOLTAGE Turn the ignition off to the lock position Disconnect the Transfer Case Motor harness connector. Ignition on, engine not running. Measure the voltage of the (K504) Drivetrain 5-volt Supply circuit at the Transfer Case Motor harness connector. Choose an answer that matches the voltage measured? Below 4.5 volts Go to step 3 Above 5.5 volts Go to step 4 Between 4.5 volts and 5.5 volts Go to step 5
3. (K504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT FOR AN OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position. Disconnect the FDCM C1 harness connector. Measure the resistance of the (K504) Drivetrain 5-volt Supply circuit between the FDCM C1 and the Transfer Case Motor 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 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 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 5
5. (T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off to the lock position Disconnect the FDCM 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 6
6. (T313) MODE SENSOR SIGNAL CIRCUIT OPEN Measure the resistance of the (T313) Mode Sensor Signal circuit between the FDCM 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 7
7. TRANSFER CASE ENCODER Turn the ignition off to the lock position Reconnect the FDCM 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 harness connector. Ignition on, engine not running. With the scan tool, read the T-Case Position Sensor voltage in the FDCM. 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. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Replace the Final Drive Control Module (FDCM) in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) .
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 TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.

1. When Monitored: With the ignition on and no system undervoltage or overvoltage condition present.

1. Set Condition: The sensor voltage is above a specified value for a calibrated amount of time.

Scheme 335

1. T-CASE POSITION SENSOR VOLTAGE ABOVE 4.8 VOLTS NOTE: If DTCs C1405 and C2112 are both present, refer to the diagnostics procedure for «C2112»(ref-350109-S21596293882009121400000) before continuing. Ignition on, engine not running. With the scan tool, read the T-Case Position Sensor voltage in the FDCM. Is the voltage above 4.8 volts? Yes Go to step 2 No Go to step 6
2. (K504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Turn the ignition off to the lock position Disconnect the Transfer Case Encoder harness connector. Ignition on, engine not running. Measure the voltage of the (K504) Drivetrain 5-volt Supply circuit at the Transfer Case Encoder 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 3
3. (T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE Measure the voltage of the (T313) Mode Sensor Signal circuit at the Transfer Case Encoder 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 4
4. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT OPEN Measure the resistance of the (K594) Drivetrain Sensor Return circuit between the Transfer Case Encoder harness connector and the FDCM C2 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 5
5. TRANSFER CASE 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 Encoder harness connector. Ignition on, engine not running. With the scan tool, read the T-Case Position Sensor voltage in the FDCM. NOTE: Remove the jumper wire before continuing. Is the voltage below 0.2 of a volt? Yes Replace the Transfer Case Encoder in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Replace the Transfer Case Encoder in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) .
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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.

1. When Monitored: With the ignition on and no system undervoltage or overvoltage condition present.

1. Set Condition: 1. The Final Drive Control Module (FDCM) detects an excessive voltage variation on the Mode Sensor Signal circuit. 2. The Final Drive Control Module (FDCM) performs an error correction procedure too frequently.

Scheme 336

1. 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 status Active for this DTC? Yes Go to step 2 No Go to step 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 harness connector. NOTE: As a failsafe precaution when the Transfer Case Motor harness connectors are disconnected, the DTCs must be erased in the FDCM. Failure to follow this will result in the FDCM 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 FDCM. 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. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Replace the Final Drive Control Module (FDCM) in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) .
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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.

1. When Monitored: With the ignition on and no system undervoltage or overvoltage condition present.

1. Set Condition: The Final Drive Control Module (FDCM) detects that the Transfer Case Motor Lock circuit diagnostic input is low when output is off.

Scheme 337

1. 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 status Active for this DTC? Yes Go to step 2 No Go to step 4
2. (T301) SWITCHED BATTERY SOLENOID SUPPLY CIRCUIT SHORTED TO GROUND Turn the ignition off to the lock position Disconnect the Transfer Case Motor harness connector. Disconnect the FDCM 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 3
3. (T301) SWITCHED BATTERY SOLENOID SUPPLY 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 harness connector. NOTE: As a failsafe precaution when either the Transfer Case Motor harness connectors are disconnected, the DTCs must be cleared in the FDCM. Failure to follow this will result in the FDCM 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 FDCM. 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. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Replace the Final Drive Control Module in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) .
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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.

1. When Monitored: With the ignition on and no undervoltage or overvoltage condition present.

1. Set Condition: The Final Drive Control Module (FDCM) detects that the Transfer Case Motor Lock Circuit diagnostic input is high when the output is on.

Scheme 338

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Scheme 341

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. Does the DTC reset? Yes Go to step 2 No Go to step 7
2. (T301) SWITCHED BATTERY SOLENOID SUPPLY CIRCUIT OPEN Turn the ignition off to the lock position Disconnect the Transfer Case Motor harness connector. Disconnect the FDCM C1 harness connector. Measure the resistance of the (T301) Switched Battery Solenoid Supply circuit between the Transfer Case Motor harness connector and the FDCM C1 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (T301) Switched Battery Solenoid Supply circuit for an open. Perform TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 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 harness connector and the FDCM C1 harness connector. Is the resistance below 5.0 Ohms? Yes Repair the (T317) Transfer Case Motor Lock Signal circuit for an open. Perform TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 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 TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 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 FDCM C1 harness connector. Is the resistance above 10.0 Ohms? Yes Replace the Transfer Case Motor assembly in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 6
6. FINAL DRIVE CONTROL MODULE (FDCM) Reconnect the FDCM C1 harness connector. Ignition on, engine not running. With the scan tool, erase DTCs. With the scan tool, read DTCs. Does the DTC P1408-Transfer Case Brake Control Circuit High set? Yes Replace the Final Drive Control Module (FDCM) in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.

1. When Monitored: With the ignition on and no undervoltage or overvoltage condition present.

1. Set Condition: A faulted condition is detected in the H-bridge driver.

Scheme 342

Scheme 343

Scheme 344

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 step 2 No Go to step 5
2. (T315) STEP MOTOR CONTROL B CIRCUIT SHORTED TO GROUND Turn the ignition off to the lock position. Disconnect the Transfer Case Motor harness connector. Ignition on, engine not running. Measure the resistance between ground and the (T315) Step Motor Control B circuit at the Transfer Case Motor harness connector. Is the resistance below 5.0 Ohms? Yes Repair the (T315) Step Motor Control B circuit for a short to ground. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) No Go to step 3
3. (T316) STEP MOTOR CONTROL C CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (T316) Step Motor Control C circuit at the Transfer Case Motor harness connector. Is the resistance below 5.0 Ohms? Yes Repair the (T316) Step Motor Control C circuit for a short to ground. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 4
4. (T315) STEP MOTOR CONTROL B CIRCUIT SHORTED TO THE (T316) SHIFT MOTOR CONTROL B CIRCUIT Measure the resistance between the (T315) Step Motor Control B circuit and the (T316) Step Motor Control C 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 B circuit and the (T316) Step Motor Control C circuit. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Replace the Final Drive Control Module (FDCM) in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) .
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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.

1. When Monitored: With the ignition on and no system undervoltage or overvoltage condition present.

1. Set Condition: The Final Drive Control Module (FDCM) detects an open circuit on one of the Transfer Case Step Motor Control circuits.

Scheme 345

Scheme 346

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Scheme 348

Scheme 349

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 step 2 No Go to step 7
2. (T315) STEP MOTOR CONTROL B CIRCUIT OPEN Turn the ignition off to the lock position Disconnect the Transfer Case Motor harness connector. Disconnect the FDCM C2 harness connector. Measure the resistance of the (T315) Step Motor Control A circuit from the Transfer Case Motor harness connector to the FDCM 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 3
3. (T316) STEP MOTOR CONTROL C CIRCUIT OPEN Measure the resistance of the (T316) Step Motor Control C circuit from the Transfer Case Motor harness connector to the Final Drive Control Module C2 harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (T316) Step Motor Control C circuit for an open. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 4
4. (T315) STEP MOTOR CONTROL B CIRCUIT VOLTAGE Ignition on, engine not running. Measure the voltage of the (T315) Step Motor Control B circuit at the Transfer Case Motor harness connector. Is the voltage above 0.5 of a volt? Yes Repair the (T315) Step Motor Control B circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 5
5. (T316) STEP MOTOR CONTROL C CIRCUIT VOLTAGE Measure the voltage of the (T316) Step Motor Control C circuit at the Transfer Case Motor harness connector. Is the voltage above 0.5 of a volt? Yes Repair the (T316) Step Motor Control C circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 6
6. TRANSFER CASE MOTOR Reconnect the Transfer Case Motor harness connector. Measure the resistance between the (T315) Step Motor Control B circuit and the (T316) Step Motor Control C circuit at the Final Drive Control Module C2 harness connector. Is the resistance below 5.0 Ohms? Yes Replace the Final Drive Control Module in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) No Replace the shorted Transfer Case Motor in accordance with the Service Information. Replace the Final Drive Control Module in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000)
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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.

1. When Monitored: With the ignition on and no system undervoltage or overvoltage condition present.

1. Set Condition: The Final Drive Control Module is unable to engage the requested range.

1. When Monitored: With the ignition on and no system undervoltage or overvoltage condition present.

1. Set Condition: The Final Drive Control Module (FDCM) detects excessive voltage fluctuation on the Mode Sensor Signal circuit.

Scheme 350

Scheme 351

Scheme 352

1. DTC IS ACTIVE NOTE: This DTC sets when the Final Drive Control Module (FDCM) 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 step 2 No Go to step 14
2. (T504) DRIVETRAIN 5-VOLT SUPPLY VOLTAGE ERRATIC NOTE: This DTC sets when the Final Drive Control Module (FDCM) 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. Turn the ignition off to the lock position Disconnect the Transfer Case Motor 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 step 6 No Go to step 3
3. (T504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT INTERMITTENT SHORT TO VOLTAGE Turn the ignition off to the lock position Disconnect the FDCM C1 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. 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 (T504) Drivetrain 5-volt Supply circuit for an intermittent short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 4
4. (T504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT HIGH RESISTANCE Measure the resistance of the (T504) Drivetrain 5-volt Supply circuit between the Transfer Case Motor harness connector and the Final Drive Control Module 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 (T504) Drivetrain 5-volt Supply circuit for an intermittent open circuit or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 5
5. (T504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT INTERMITTENT SHORT TO GROUND Measure the resistance between ground and the (T504) Drivetrain 5-volt Supply circuit at the Transfer Case Motor 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 (T504) Drivetrain 5-volt Supply circuit for an intermittent short to ground. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Replace the Final Drive Control Module in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) .
6. T-CASE POSITION SENSOR VOLTAGE Turn the ignition off to the lock position Reconnect the Final Drive Control Module 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 harness connector. Ignition on, engine not running. With the scan tool read the T-Case Position Sensor Voltage in the Final Drive Control Module 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 step 12 No Go to step 7
7. (T313) MODE SENSOR SIGNAL CIRCUIT INTERMITTENT SHORT TO VOLTAGE NOTE: Remove the previously installed jumper wire. Turn the ignition off to the lock position Disconnect the Final Drive Control Module 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 8
8. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT INTERMITTENT SHORT TO VOLTAGE Measure the voltage of the (K594) Drivetrain Sensor Return 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 (K594) Drivetrain Sensor Return circuit for an intermittent short to voltage. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 9
9. (T313) MODE SENSOR SIGNAL CIRCUIT 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 harness connector and the Final Drive Control Module C2 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 10
10. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT HIGH RESISTANCE Measure the resistance of the (K594) Drivetrain Sensor Return circuit between the Transfer Case Motor harness connector and the Final Drive Control Module 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 11
11. (T313) MODE SENSOR SIGNAL CIRCUIT INTERMITTENT SHORT TO GROUND Measure the resistance between ground and the (T313) Mode Sensor Signal circuit at the Transfer Case Motor 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 12
12. TRANSFER CASE MOTOR NOTE: This DTC sets when the Final Drive Control Module 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 Final Drive Control Module power and ground circuits. Were any problems found? Yes Repair as necessary. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 13
13. TRANSFER CASE MOTOR/ENCODER Replace the Transfer Case Motor/ Encoder in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . Test drive the vehicle. With the scan tool, read the DTCs in the Final Drive Control Module. Does this DTC reset? Yes Replace the FDCM in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.
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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.

1. When Monitored: With the ignition on and no system undervoltage or overvoltage condition present.

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

1. Set Condition: The Final Drive Control Module is unable to fully lock the T-Case (in Either High or Low) because the T-Case clutch is worn.

Scheme 353

Scheme 354

Scheme 355

1. DTC IS ACTIVE NOTE: Diagnose and repair any system voltage or Transfer Case related DTCs in the FDCM before continuing with this test. Ignition on, engine running. With the scan tool, clear stored DTCs in the Final Drive Control Module. 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 Final Drive Control Module. Does this DTC reset? Yes Go to step 2 No Go to step 6
2. (K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT HIGH RESISTANCE Turn the ignition off to the lock position Disconnect the Final Drive Control Module C1 harness connector. Disconnect the Transfer Case Motor harness connector. Measure the resistance of the (K504) Drivetrain 5 Volt Supply circuit between the Transfer Case Motor harness connector and the Final Drive Control Module C1 harness connector. Is the resistance above 5.0 ohms? Yes Repair the high resistance in the (K504) Drivetrain 5 Volt Supply circuit. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 3
3. (T313) MODE SENSOR SIGNAL CIRCUIT HIGH RESISTANCE Turn the ignition off to the lock position Disconnect the Final Drive Control Module C1 harness connector. Measure the resistance of the (T313) Mode Sensor Signal circuit between the Transfer Case Motor harness connector and the Final Drive Control Module C1 harness connector. Is the resistance above 5.0 ohms? Yes Repair the high resistance in the (T313) Mode Sensor Signal circuit. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 4
4. (K594) DRIVETRAIN SENSOR RETURN CIRCUIT HIGH RESISTANCE Measure the resistance of the (K594) Drivetrain Sensor Return circuit between the Transfer Case Motor harness connector and the Final Drive Control Module C1 harness connector. Is the resistance above 5.0 ohms? Yes Repair the high resistance in the (K594) Drivetrain Sensor Return circuit. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Go to step 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 Final Drive Control Module. 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. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Replace the Final Drive Control Module in accordance with the Service Information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) .
6. 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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: A calibrated motor abuse temperature limit has been achieved. The Final Drive Control Module 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. When Monitored: Ignition on.

1. Set Condition: The Final Drive Control Module (FDCM) 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. When Monitored: With the ignition on and no system under voltage or over voltage condition present.

1. Set Condition: The Final Drive Control Module is unable to engage the requested range.

1. When Monitored: Ignition on.

1. Set Condition: The FDCM 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. When Monitored: Continuously.

1. Set Condition: The Final Drive Control Module detects that system voltage is below 8.5 volts for 60 seconds with engine RPM greater than 1500.

Scheme 356

Scheme 357

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 «DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Diagnosis and Testing»(ref-350089) . No Go to step 2
2. DTC IS ACTIVE With the scan tool, read DTCs in the Final Drive Control Module. Is the status Active for this DTC? Yes Go to step 3 No Go to step 5
3. (Z910) GROUND CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off to the lock position Disconnect the FDCM C1 harness connector. Disconnect the FDCM C2 harness connector. Ignition on, engine not running. With a 12-volt test light connected to B+, check the (Z910) Ground circuit in the FDCM C2 harness connector.
4. POWER CIRCUITS OPEN OR HIGH RESISTANCE With a 12-volt test light connected to ground, check the (F943) Fused Ignition Switch Output circuit in the FDCM C1 harness connector and the (A115) Fused B+ circuit in the FDCM 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 Final Drive Control Module (FDCM) in accordance with the Service information. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Repair the Fused B+ circuit(s) for an open circuit or high resistance. Perform the TRANSFER CASE VERIFICATION TEST. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) .
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. See «DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure»(ref-350109-S06114668762009121400000) . No Test complete.

1. When Monitored: Continuously.

1. Set Condition: The Final Drive Control Module detects that system voltage is above 16.0 volts for 60 seconds with engine RPM greater than 1500.

1. When Monitored: With the ignition on and no system undervoltage or overvoltage condition present.

1. Set Condition: The Final Drive Control Module )FDCM) detects that the Drivetrain Sensor Supply voltage is below 2.5 volts for 300 mS.

1. When Monitored: With the ignition on and no system undervoltage or overvoltage condition present.

1. Set Condition: The Final Drive Control Module detects that the Drivetrain Sensor Supply voltage is above 7.5 volts for 300 mS

1. When Monitored: With the ignition on.

1. Set Condition: The Final Drive Control Module (FDCM) has detected a failure internal to the controller.

1. When Monitored: With the ignition on.

1. Set Condition: When the Final Drive Control Module (FDCM) detects the signal from the gateway module relevant for vehicle characteristic is missing or does not match for a period greater than the specified fault duration.

1. When Monitored: Ignition run time is greater than 1 second. Battery voltage between 10 and 16 volts. Engine run time greater than 3 seconds.

1. Set Condition: The PCM loses communication over the CAN C Bus circuit. The circuit is continuously monitored. One Trip fault.

1. When Monitored: With the ignition on Battery voltage between 10 and 16 volts IOD fuse installed TIPM is configured correctly

1. Set Condition: Bus messages not received from the ECM/PCM for approximately 2 to 5 seconds.

1. When Monitored: With the ignition on Battery voltage between 10 and 16 volts Ignition Off Draw (IOD) fuse installed. Totally Integrated Power Module (TIPM) is configured correctly.

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

1. When Monitored: Every 7 msec. Conditions: Battery voltage greater than 10v but less than 16v.

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

1. When Monitored: Every 7 msec. Conditions: Battery voltage greater than 10v but less than 16v.

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

1. When Monitored: With the ignition on Battery voltage between 10 and 16 volts IOD fuse installed

1. Set Condition: If the Final Drive Control Module fails to receive bus messages from the Steering Angle Sensor for approximately 500 ms.

1. When Monitored: With the ignition on for 4 seconds, no CAN BUS circuit error condition present, no lost communication with PCM condition present, and no system undervoltage or overvoltage condition present.

1. Set Condition: The Final Drive Control Module (FDCM) is receiving implausible data for pedal position, engine RPM, torque, or engine coolant temperature from the PCM.

1. When Monitored: With the ignition on for 4 seconds, no CAN BUS circuit error condition present, no lost communication with TCM condition present, and no system undervoltage or overvoltage condition present.

1. Set Condition: The Final Drive Control Module (FDCM) is receiving implausible data for gear or PRNDL position from the TCM.

1. When Monitored: 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.

1. Set Condition: The Final Drive Control Module (FDCM) is receiving implausible data for vehicle speed, wheel speeds, brake switch status, longitudinal acceleration, yaw rate, or lateral acceleration from the ABS controller.

1. When Monitored: 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.

1. Set Condition: The Final Drive Control Module (FDCM) is receiving implausible data for sensor status from the SCM.

1. When Monitored: With the ignition on for Four seconds, no CAN BUS circuit error condition present, no lost communication with FCM condition present, and no system undervoltage or overvoltage condition present.

1. Set Condition: The Final Drive Control Module (FDCM) is receiving no message or implausible data for ambient temperature or the transfer case selector switch.