Diagnostic Test

VERIFY THE DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, record and erase DTCs.
3. Test drive the vehicle.
4. Ignition on, engine not running.
5. With the scan tool, read DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 2
  No
  - Go To 7
(T315) SHIFT MOTOR CONTROL A CIRCUIT OPEN
1. Turn the ignition off to the lock position.
2. Disconnect the ECC Actuator C2 harness connector.
3. Disconnect the DTCM C2 harness connector.
4. Measure the resistance of the (T315) Shift Motor Control A circuit from the ECC Actuator C2 harness connector to the DTCM C2 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (T315) Shift Motor Control B circuit for an open.
  - Perform the DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
(T316) SHIFT MOTOR CONTROL B CIRCUIT OPEN
1. Measure the resistance of the (T316) Shift Motor Control C circuit from the ECC Actuator C2 harness connector to the DTCM C2 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (T316) Shift Motor Control C circuit for an open.
  - Perform the DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
(T315) SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO VOLTAGE
1. Ignition on, engine not running.
2. Measure the voltage of the (T315) Shift Motor Control A circuit at the ECC Actuator C2 harness connector.
  Is the voltage above 0.5 of a volt?
  
  Yes
  - Repair the (T315) Shift Motor Control A circuit for a short to voltage.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 5
(T316) SHIFT MOTOR CONTROL B CIRCUIT SHORTED TO VOLTAGE
1. Measure the voltage of the (T316) Shift Motor Control B circuit at the ECC Actuator C2 harness connector.
  Is the voltage above 0.5 of a volt?
  
  Yes
  - Repair the (T316) Shift Motor Control B circuit for a short to voltage.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 6
ELECTRONICALLY CONTROLLED CLUTCH (ECC) ACTUATOR
1. Connect the ECC Actuator C2 harness connector.
2. Measure the resistance between the (T315) Shift Motor Control A circuit and the (T316) Shift 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.
  - Perform the DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the shorted Electronically Controlled Clutch (ECC) Actuator in accordance with the Service Information.
  - Perform the DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
INTERMITTENT WIRING HARNESS AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors.
3. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.
4. Look for the data to change or for the DTC to reset during the wiggle test.
5. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times.
6. 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 .
  No
  - Test complete.