Capacities - Approximate Fluid
| Application | Specification |
|---|
| Metric | English |
| Auto Trak II GM P/N 12378508 (Canadian P/N 10953626) | 1.8 liters | 2 quarts |
Capacities - Approximate Fluid
Transfer Case Control Schematic Icons
Transfer Case Control Schematic Icons Icon Icon Definition IMPORTANT: Twisted-pair wires provide an effective shield that helps protect sensitive electronic components from electrical interference. Depending on application, twisted-pair wires are used on wiring harnesses connecting the following components: The electronic ignition (EI) control module The manifold absolute pressure (MAP) sensor The powertrain control module (PCM) The vehicle speed sensor (VSS) In order to prevent electrical interference from degrading the performance of the connected components, you must maintain the proper specification when making any repairs to the twisted-pair wires shown : The wires must be twisted a minimum of 9 turns per 30.5 cm (12 in) as measured anywhere along the length of the wires. The outside diameter of the twisted wires must not exceed 6.0 mm (0.236 in). Refer to Splicing Twisted or Shielded Cable
Scheme 1
Scheme 1: Transfer Case Control Schematic Icons
Scheme 2
Scheme 2: Transfer Case Control Schematics
Scheme 3
Scheme 3: Transfer Case Control Component Views
| Callout | Component Name |
|---|
| 1 | Transfer Case Shift Control Module |
| 2 | Instrument Carrier Support, Left Side |
Scheme 4
| Callout | Component Name |
|---|
| 1 | Transfer Case Encoder Motor Connector |
| 2 | Propshaft Speed Sensor - Rear |
| 3 | Vehicle Speed Sensor (VSS) |
| 4 | Propshaft Speed Sensor - Front |
| 5 | C310 |
Scheme 5
Scheme 5: Propshaft Speed Sensor - Front
| Connector Part Information OEM: 15449028 Service: 88987993 Description: 2-Way F GT 150 Series Sealed (BK) |
|---|
| Terminal Part Information Terminal/Tray: 15326267/19 Core/Insulation Crimp: E/4 Release Tool/Test Probe: 15315247/J-35616-2A (GY) |
Propshaft Speed Sensor - Front Connector Parts Information
| Pin | Wire Color | Circuit No. | Function |
|---|
| A | YE | 400 | Signal High - Front |
| B | PU | 401 | Signal Low - Front |
Propshaft Speed Sensor - Front Connector Terminal Identification
Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 2: This step tests to see if the malfunction is intermittent.
- 3: This step tests the internal resistance of the propshaft speed sensor.
- 4: This step tests to see if the propshaft speed sensor can generate a sufficient amount of AC voltage.
- 5: This step tests the rear propshaft speed sensor low circuit for a short to ground, a high resistance, or an open.
- 6: This step tests the rear propshaft speed sensor high circuit for a short to ground, a high resistance, or an open.
- 7: This step tests the rear propshaft speed sensor low circuit for a short to voltage.
- 8: This step tests the rear propshaft speed sensor high circuit for a short to voltage.
- 9: This step tests the rear propshaft speed sensor low circuit for a short to the rear propshaft speed sensor high circuit.
| Step | Action | Value(s) | Yes | No |
|---|
| Schematic Reference: Transfer Case Control Schematics Connector End View Reference: Transfer Case Control Connector End Views |
| 1 | Did you perform the Diagnostic System Check - Vehicle? | | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Drive the vehicle for a short test drive. With the scan tool, observe the value of the Rear Propshaft Speed Data Parameter in the Transfer Case Data List while driving. Does the RPM value vary or become intermittent while driving at a steady speed? | | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 | Turn the ignition OFF. Disconnect the transfer case rear propshaft speed sensor. Measure the resistance of the transfer case rear propshaft speed sensor. Is the resistance reading within the specified values? | 1,300-2,700 ohms | Go to Step 4 | Go to Step 10 |
| 4 | Connect a DMM to the transfer case rear propshaft speed sensor. Block the front wheels. Place the transmission in NEUTRAL. Raise and support the rear axle so that the wheels turn freely. Hold one rear wheel while rotating the other rear wheel. Observing the AC voltage reading on the DMM Is the voltage reading greater than the specified value? | 0.5 V AC | Go to Step 5 | Go to Step 10 |
| 5 | Disconnect the transfer case shift control module. Test the rear propshaft speed sensor low signal circuit for a short to ground, a high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 6 |
| 6 | Test the rear propshaft speed sensor high signal circuit for a short to ground, a high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 7 |
| 7 | Test the rear propshaft speed sensor low signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 8 |
| 8 | Test the rear propshaft speed sensor high signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 9 |
| 9 | Test the rear propshaft speed sensor high circuit for a short to the rear propshaft sensor low signal circuit. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 11 |
| 10 | Replace the transfer case rear propshaft speed sensor. Refer to Transfer Case Speed Sensor Replacement - Right Rear . Did you complete the repair? | | Go to Step 12 | |
| 11 | IMPORTANT: After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or false communication DTCs. Replace the transfer case shift control module. Refer to Control Module References for replacement, setup, and programming.Did you complete the repair? | | Go to Step 12 | |
| 12 | Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC set? | | Go to Step 2 | System OK |
| IMPORTANT |
|---|
| After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or false communication DTCs. |
The numbers below refer to the step numbers on the diagnostic table.
- 2: This step tests to see if the malfunction is intermittent.
- 3: This step tests the internal resistance of the propshaft speed sensor.
- 4: This step tests to see if the propshaft speed sensor can generate a sufficient amount of AC voltage.
- 5: This step tests the front propshaft speed sensor low signal circuit for a short to ground, a high resistance or an open.
- 6: This step tests the front propshaft speed sensor high signal circuit for a short to ground, a high resistance or an open.
- 7: This step tests the front propshaft speed sensor low signal circuit for a short to voltage.
- 8: This step tests the front propshaft speed sensor high signal circuit for a short to voltage.
- 9: This step tests the front propshaft speed sensor low signal circuit for a short to the front propshaft speed sensor high signal circuit.
| Step | Action | Value(s) | Yes | No |
|---|
| Schematic Reference: Transfer Case Control Schematics Connector End View Reference: Transfer Case Control Connector End Views |
| 1 | Did you perform the Diagnostic System Check - Vehicle? | | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Drive the vehicle for a short test drive. With the scan tool, observe the value of the Front Propshaft Speed Data Parameter in the Transfer Case Data List while driving. Does the RPM value vary or become intermittent while driving at a steady speed? | | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 | Turn the ignition OFF. Disconnect the transfer case front propshaft speed sensor. Measure the resistance of the transfer case front propshaft speed sensor. Is the resistance reading within the specified range? | 1,300-2,700 ohms | Go to Step 4 | Go to Step 10 |
| 4 | Connect a DMM to the transfer case front propshaft speed sensor. Block the rear wheels. Place the transmission in NEUTRAL. Raise and support the vehicle so that the wheels turn freely. Hold one front wheel while rotating the other front wheel. Observe the AC voltage reading on the DMM Is the voltage reading greater than the specified value? | 0.5 V AC | Go to Step 5 | Go to Step 10 |
| 5 | Disconnect the transfer case shift control module. Test the front propshaft speed sensor low signal circuit for a short to ground, a high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 6 |
| 6 | Test the front propshaft speed sensor high signal circuit for a short to ground, a high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 7 |
| 7 | Test the front propshaft speed sensor low signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 8 |
| 8 | Test the front propshaft speed sensor high signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 9 |
| 9 | Test the front propshaft speed sensor low signal circuit for a short to the front propshaft speed sensor high signal circuit. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 11 |
| 10 | Replace the transfer case front propshaft speed sensor. Refer to Transfer Case Speed Sensor Replacement - Front . Did you complete the repair? | | Go to Step 12 | |
| 11 | IMPORTANT: After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or setting false communication DTCs. Replace the transfer case shift control module. Refer to Control Module References for replacement, setup, and programming.Did you complete the repair? | | Go to Step 12 | |
| 12 | Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC set? | | Go to Step 2 | System OK |
| IMPORTANT |
|---|
| After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or setting false communication DTCs. |
The numbers below refer to the step numbers on the diagnostic table.
- 2: This step tests the battery positive and ground circuits for poor connections.
- 3: This step tests the encoder motor for an internal short to ground.
- 4: This step helps isolate motor malfunctions from the transfer case shift control module and wiring.
- 5: This step tests for an open, high resistance, short to ground or short to voltage.
| Step | Action | Value(s) | Yes | No |
|---|
| Schematic Reference: Transfer Case Control Schematics Connector End View Reference: Transfer Case Control Connector End Views |
| 1 | Did you perform the Diagnostic System Check - Vehicle? | | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Check the battery positive and ground circuits at the transfer case shift control module for poor connections. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | | Go to Step 8 | Go to Step 3 |
| 3 | Turn OFF the ignition. Disconnect the encoder motor connector. With a DMM at the encoder motor pigtail connector, test motor control A and motor control B for a short to ground within the encoder motor. Is motor control A or motor control B shorted to ground? | | Go to Step 6 | Go to Step 4 |
| 4 | IMPORTANT: Use test leads designed for this connector and make firm contact with the leads. Turn OFF the ignition. Zero the DMM with Ohms selected, by touching the two leads. Connect the DMM between motor control A terminal and motor control B terminal and test the resistance in the encoder motor. Is the resistance within the specified range? | 0.3-35 ohms | Go to Step 5 | Go to Step 6 |
| 5 | Disconnect the transfer case shift control module connectors C1 and C2. Test the motor A and motor B control circuits for a short to ground, short to voltage, open or high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | | Go to Step 8 | Go to Step 7 |
| 6 | Replace the encoder motor. Refer to Transfer Case Motor/Encoder Replacement . Did you complete the repair? | | Go to Step 8 | |
| 7 | IMPORTANT: After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or false communication DTCs. Replace the transfer case shift control module. Refer to Control Module References for replacement, setup, and programming.Did you complete the repair? | | Go to Step 8 | |
| 8 | Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC set? | | Go to Step 2 | System OK |
| IMPORTANT |
|---|
| Use test leads designed for this connector and make firm contact with the leads. |
| IMPORTANT |
|---|
| After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or false communication DTCs. |
The numbers below refer to the step numbers on the diagnostic table.
- 2: This step tests the encoder circuit for a current malfunction.
- 3: This step tests for proper reference voltage at the encoder.
- 4: This step tests the 5-volt reference encoder circuit for a short to voltage, short to ground, an open or high resistance.
- 5: After determining that the reference voltage measured in step 4 was correct, step 6 reviews the reading originally measured in step 3 to see if it was higher or lower than what is expected. This step helps determine whether the encoder signal circuit is being pulled high or low.
- 6: This step tests the encoder signal circuit and the encoder low reference circuit for a short to voltage.
- 7: This step helps determine a faulty encoder.
- 8: This step tests the encoder signal circuit for an open or a short to ground.
- 9: This step tests the encoder low reference circuit for an open or high resistance.
| Step | Action | Value(s) | Yes | No |
|---|
| Schematic Reference: Transfer Case Control Schematics Connector End View Reference: Transfer Case Control Connector End Views |
| 1 | Did you perform the Diagnostic System Check - Vehicle? | | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Install a scan tool. Start the engine. Place the transmission in NEUTRAL. Set the parking brake. With a scan tool, observe the Encoder Return Voltage Parameter in the Transfer Case Data List. Does the voltage reading stay within the specified range? | 0.5-4.5 V | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 | Turn the ignition OFF. Disconnect the encoder motor. Turn the ignition ON, with the engine OFF. Measure the voltage from the 5-volt reference encoder circuit to ground on the transfer case shift control module side of the harness. Is the voltage measured within the specified range? | 4.8-5.2 V | Go to Step 5 | Go to Step 4 |
| 4 | Test the 5-volt reference encoder circuit for a short to voltage, short to ground, an open or high resistance. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 11 |
| 5 | Was the voltage reading measured in step 3 greater than the specified value? | 5.2 volts | Go to Step 6 | Go to Step 7 |
| 6 | Test the encoder signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 11 |
| 7 | Install a scan tool. Turn the ignition ON, with the engine OFF. With the encoder connector disconnected, use a fused jumper and probe between the 5-volt reference encoder circuit and encoder signal circuit on the transfer case shift control module side of the harness. With a scan tool, observe the Encoder Return Voltage Parameter in the Transfer Case Data List. Is the Encoder Return Voltage display within the specified range? | 4.8-5.2 V | Go to Step 9 | Go to Step 8 |
| 8 | Test the encoder signal circuit for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs . Was the condition found and corrected? | | Go to Step 12 | Go to Step 11 |
| 9 | Test the encoder low reference circuit for an open or high resistance. Refer to Testing for Continuity and Wiring Repairs . Did you find and correct the condition? | | Go to Step 12 | Go to Step 10 |
| 10 | Replace the encoder motor. Refer to Transfer Case Motor/Encoder Replacement . Did you complete the repair? | | Go to Step 12 | |
| 11 | IMPORTANT: After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or setting false communication DTCs. Replace the transfer case shift control module. Refer to Control Module References for replacement, setup, and programming.Did you complete the repair? | | Go to Step 12 | |
| 12 | Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC set? | | Go to Step 2 | System OK |
| IMPORTANT |
|---|
| After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or setting false communication DTCs. |
The numbers below refer to the step numbers on the diagnostic table.
- 2: This step determines if the rear propshaft speed sensor and wiring are operating properly.
- 3: This step determines if the front propshaft speed sensor and wiring are operating properly.
- 4: This step determines if the motor control A or motor control B circuits are shorted to ground within the encoder motor.
- 5: This step tests the integrity of the motor windings.
- 6: This step tests the motor control A and motor control B circuits for an open, short to ground, or high resistance between the encoder motor and the transfer case shift control module.
- 7: This step determines whether the transfer case is mechanically functioning properly.
| Step | Action | Value(s) | Yes | No |
|---|
| Schematic Reference: Transfer Case Control Schematics Connector End View Reference: Transfer Case Control Connector End Views |
| 1 | Did you perform the Diagnostic System Check - Vehicle? | | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Take the vehicle on a short test drive. With the scan tool, observe the Rear Propshaft Speed Data Parameter in the Transfer Case Data List while driving. Does the RPM value vary or become intermittent while driving at a steady speed? | | Go to DTC C0300 | Go to Step 3 |
| 3 | Take the vehicle on a short test drive. With the scan tool, observe the Front Propshaft Speed Data Parameter in the Transfer Case Data List while driving. Does the RPM value vary or become intermittent while driving at a steady speed? | | Go to DTC C0305 | Go to Step 4 |
| 4 | Turn OFF the ignition. Disconnect the encoder motor connector. With a DMM at the encoder motor pigtail connector, test motor control A and motor control B for a short to ground within the encoder motor. Is motor control A or motor control B shorted to ground? | | Go to Step 9 | Go to Step 5 |
| 5 | IMPORTANT: Use test leads designed for this connector and make firm contact with the leads. Turn OFF the ignition. Zero the DMM with Ohms selected, by touching the 2 leads. Connect the DMM between motor control A terminal and motor control B terminal and test the resistance in the encoder motor. Is the encoder motor resistance within the specified range? | 0.3-35 ohms | Go to Step 6 | Go to Step 9 |
| 6 | Test the motor A and motor B control circuits for a short to ground, short to voltage, open or high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | | Go to Step 11 | Go to Step 7 |
| 7 | Remove the encoder motor assembly. Refer to Transfer Case Motor/Encoder Replacement . Connect a wrench to the transfer case sector shaft. Turn the sector shaft to apply the clutch pack. While the clutch pack is applied, attempt to turn the front propshaft by hand. Does the clutch hold the propshaft and prevent it from being turned? | | Go to Step 9 | Go to Step 8 |
| 8 | Remove the transfer case and overhaul. Refer to Transfer Case Disassemble . Did you complete the repair? | | Go to Step 11 | |
| 9 | Replace the transfer case encoder motor. Refer to Transfer Case Motor/Encoder Replacement . Did you complete the repair? | | Go to Step 11 | |
| 10 | IMPORTANT: After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or false communication DTCs. Replace the transfer case shift control module. Refer to Control Module References for replacement, setup, and programming.Did you complete the repair? | | Go to Step 2 | |
| 11 | Use the scan tool in order to clear the DTCs. Operate the vehicle within the conditions for running the DTC as specified in the supporting text. Does the DTC set? | | Go to Step 10 | System OK |
| IMPORTANT |
|---|
| Use test leads designed for this connector and make firm contact with the leads. |
| IMPORTANT |
|---|
| After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or false communication DTCs. |
The numbers below refer to the step numbers on the diagnostic table.
- 2: This step has the technician attempt to reprogram the transfer case shift control module.
- 3: This step has the technician replace and reprogram the transfer case shift control module.
| Step | Action | Yes | No |
|---|
| Schematic Reference: Transfer Case Control Schematics Connector End View Reference: Transfer Case Control Connector End Views |
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Attempt to reprogram the transfer case shift control module. Refer to Control Module References for replacement, setup, and programming. Does the DTC set after programming? | Go to Step 3 | System OK |
| 3 | IMPORTANT: After transfer case shift control module replacement and reprogramming ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid setting false DTCs. Replace the transfer case shift control module. Refer to Control Module References for replacement, setup, and programming.Did you complete the repair? | System OK | |
| IMPORTANT |
|---|
| After transfer case shift control module replacement and reprogramming ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid setting false DTCs. |
Symptoms - Transfer Case
| IMPORTANT | Perform the Diagnostic System Check - Vehicle before using the symptom tables in order to verify that all of the following are true: There are no diagnostic trouble codes (DTCs) present. The control module or modules can communicate via the serial data link. Review the system operation in order to familiarize yourself with the system functions. Refer to Transfer Case Description and Operation for system operation. |
The number below refers to the step number on the diagnostic table.
- 2: This step determines whether the failure is the result of a malfunctioning transfer case shift control module or the instrument cluster.
| Step | Action | Value(s) | Yes | No |
|---|
| 1 | Did you perform the Diagnostic System Check - Vehicle? | | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Turn the ignition ON, with the engine OFF. Install a scan tool. Using the scan tool, command the SERVICE AWD lamp OFF. Does the SERVICE AWD lamp turn OFF? | | Go to Step 3 | Go to Diagnostic System Check - Vehicle |
| 3 | IMPORTANT: After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or false communication DTCs. Replace the transfer case shift control module. Refer to Control Module References for replacement, setup, and programming.Did you complete the repair? | | Go to Step 4 | |
| 4 | Use the scan tool in order to clear the DTCs. Operate the vehicle in order to determine if the symptom has been corrected. Is the symptom still present? | | Go to Step 2 | System OK |
| IMPORTANT |
|---|
| After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or false communication DTCs. |
Service Indicator Always On
The number below refers to the step number on the diagnostic table.
- 2: This step determines whether the failure is the result of a faulty transfer case shift control module or the instrument cluster.
| Step | Action | Value(s) | Yes | No |
|---|
| 1 | Did you perform the Diagnostic System Check - Vehicle? | | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Turn the ignition ON, with the engine OFF. Install a scan tool. Using the scan tool, command the SERVICE AWD lamp ON. Does the SERVICE AWD lamp turn ON? | | Go to Step 3 | Go to Diagnostic System Check - Vehicle |
| 3 | IMPORTANT: After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or false communication DTCs. Replace the transfer case shift control module. Refer to Control Module References for replacement, setup, and programming.Did you complete the repair? | | Go to Step 4 | |
| 4 | Use the scan tool in order to clear the DTCs. Operate the vehicle in order to determine if the symptom has been corrected. Is the symptom still present? | | Go to Step 2 | System OK |
| IMPORTANT |
|---|
| After transfer case shift control module replacement and reprogramming, ensure all doors are closed and the key is out of the ignition, then open and close the doors again and wait 2 minutes to avoid incomplete programming or false communication DTCs. |
Service Indicator Inoperative
