C145D

C145D-AWD CLUTCH POWER/RETURN CONTROL CIRCUIT OPEN





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
The Solenoid is active, no solenoid supply circuit DTCs are present and battery voltage is normal.

- Set Condition:
The Drive Train Control Module (AWD) detects the Rear Differential Solenoid Power Control or Rear Differential Solenoid Return Control is open.





1. VERIFY THE DTC IS ACTIVE
1. Ignition on, engine not running.
2. Press the accelerator pedal and hold for 30 seconds.
3. With the scan tool, read DTCs.

Is the DTC active at this time?

Yes

- Go To 2

No

- Go To 9

2. ECC SOLENOID OPERATION




1. Turn the ignition off.
2. Disconnect the ECC Solenoid harness connector.
3. Ignition on, engine not running.
4. Using a 12-volt test light, jump across from the (T316) Shift Motor Control B circuit and the (T315) Shift Motor Control A circuit in the ECC Solenoid harness connector.
5. With the scan tool, actuate the ECC Solenoid.

Does the test light illuminate brightly and flash on and off?

Yes

- Go To 8

No

- Go To 3

3. (T316) SHIFT MOTOR CONTROL B CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the DTCM harness connector.
3. Measure the resistance of the (T316) Shift Motor Control B circuit between the ECC Solenoid harness connector and the DTCM harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 4

No

- Repair the (T316) Solenoid Supply Voltage circuit for an open.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

4. (T316) SHIFT MOTOR CONTROL B CIRCUIT SHORTED TO VOLTAGE




1. Ignition on, engine not running.
2. Measure the voltage between ground and the (T316) Shift Motor Control B circuit at the ECC Solenoid harness connector.

Is there any voltage present?

Yes

- Repair the (T316) Shift Motor Control B circuit for a short to voltage.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

No

- Go To 5

5. (T315) SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO VOLTAGE




1. Measure the voltage between ground and the (T315) Shift Motor Control A circuit in the ECC Solenoid harness connector.

Is there any voltage present?

Yes

- Repair the (T315) Shift Motor Control A circuit for a short to voltage.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

No

- Go To 6

6. (T315) SHIFT MOTOR CONTROL A CIRCUIT OPEN




1. Turn the ignition off.
2. Measure the resistance of the (T315) Shift Motor Control A circuit between the ECC Solenoid harness connector and the DTCM harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 7

No

- Repair the open in the (T315) Shift Motor Control A circuit.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

7. DRIVE TRAIN CONTROL MODULE (DTCM)

NOTE: Before continuing, check the Drive Train Control Module (DTCM) harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

1. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.

Were there any problems found?

Yes

- Repair as necessary.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

No

- Replace the Drive Train Control Module (DTCM). Drivetrain Control Module - Removal.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

8. ELECTRONICALLY CONTROLLED CLUTCH (ECC)

NOTE: Before continuing, check the ECC Solenoid jumper harness connector terminals for corrosion, damage, or terminals push out, repair/replace as necessary.

1. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.

Were there any problems found?

Yes

- Repair as necessary.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

No

- Replace Electronically Controlled Clutch (ECC). Half Shaft - Removal.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

9. INTERMITTENT WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle test the wiring harness and connectors while checking for shorted and open circuits.
4. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset.

Were there any problems found?

Yes

- Repair as necessary.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

No

- Test complete.