Pinpoint Test D: Transfer Case Clutch Actuator
WARNING: This page is about a different variant/trim than selected.
- Refer to FOUR WHEEL DRIVE SYSTEMS
for schematic and connector information.
Normal Operation and Fault Conditions
The transfer case clutch actuator is a reversible DC motor. When front axle torque is required, the actuator motor rotates clockwise to engage a ball-ramp device. When no torque is required, the motor rotates counter-clockwise to the kiss point position. If an AWD fault is detected, the AWD module may hold the actuator motor position, attempt full clutch release, or attempt full clutch apply.
Each time the AWD module wakes up, it will command the transfer case clutch actuator counter clockwise to the hard stop position, clockwise to the soft stop, and back to the kiss point position. If needed, it will adjust the previous kiss point position to the new learned position.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition AWD P184A:00 Transfer Case Unable To Transition Between 4x2 and 4x4 Mode: No Sub Type Information This AWD sets when the AWD detects Transfer Case Unable To Transition Between 4x2 and 4x4 Mode AWD P184C:00 Transfer Case Transition Time Range/Performance: No Sub Type Information This AWD sets when the AWD detects Transfer Case Transition Time Range/Performance AWD C05D8:01 4WD/AWD Clutch "A" Actuator Control Circuit/Open: General Electrical Failure Sets when the AWD module detects an internal over voltage and over current faults. AWD C05D8:08 4WD/AWD Clutch "A" Actuator Control Circuit/Open: Bus Signal/Message Failures Sets when the AWD module detects a communication fault with the 4WD/AWD and the transfer case. AWD C05D8:19 4WD/AWD Clutch "A" Actuator Control Circuit/Open: Circuit Current Above Threshold This DTC sets in continuous memory and on-demand if the RDU motor circuit detects high current flow when commanded. This DTC sets in continuous memory and on-demand if the transfer case motor detects high current flow when commanded. Actuator current above 40A for 200ms OR above 20A AWD C05D8:49 4WD/AWD Clutch "A" Actuator Control Circuit/Open: Internal Electronic Failure Sets when the AWD module indicates transfer case clutch "A" control circuit driver internal electronic failure. AWD C05D8:4B 4WD/AWD Clutch "A" Actuator Control Circuit/Open: Over Temperature Sets when the AWD module indicates transfer case clutch "A" control circuit driver over temperature. Will set when temperature reaches over 140C. AWD C05D8:96 4WD/AWD Clutch "A" Actuator Control Circuit/Open: Component Internal Failure This DTC sets when AWD module detects short to power or short to ground for Clutch "A" actuator Control Circuit. AWD C05D9:18 4WD/AWD Clutch "A" Actuator Control Circuit Performance: Circuit Current Below Threshold This DTC sets in continuous memory if the transfer case motor circuit detects low current flow when commanded. AWD C05D9:19 4WD/AWD Clutch "A" Actuator Control Circuit Performance: Circuit Current Above Threshold This DTC sets in continuous memory if the transfer case motor circuit detects high current flow when commanded. AWD C05D9:44 4WD/AWD Clutch "A" Actuator Control Circuit Performance: Data Memory Failure Sets when the AWD module detects transfer case actuator "A" data memory failure AWD C05D9:74 4WD/AWD Clutch "A" Actuator Control Circuit Performance: Actuator Slipping This DTC is set when the clutch hardstop failed for Clutch "A". Resolve all motor position sensor DTCs before addressing this DTC. AWD C05D9:99 4WD/AWD Clutch "A" Actuator Control Circuit Performance: Exceeded Learning Limit This DTC is set when the kisspoint learn fails to complete successfully. Resolve all motor position sensor DTC before addressing this DTC. Possible Sources
- Transfer case clutch actuator position sensor faults
- Loose AWD module case ground connection
- Transfer case clutch actuator shorted to ground
- Transfer case clutch actuator position sensor - high resistance
- Transfer case clutch actuator position sensor - circuits shorted together
- Transfer case clutch actuator
- Transfer case
- D1 CHECK FOR TRANSFER CASE CLUTCH ACTUATOR POSITION SENSOR FAULTS
- Review DTC retrieved from AWD module continuous memory self-test.
Are any transfer case clutch actuator position sensor DTC stored in memory?
Yes RESOLVE all transfer case clutch actuator position sensor DTC first. No GO to D2 - D2 CHECK THE AWD MODULE GROUND
- Disconnect AWD module connector C2371.
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C2371-46 Ground
Is the resistance less than 3 ohms?
Yes If less than 3 ohms, replace the AWD module. REFER to: All-Wheel Drive (AWD) Module . No If greater than 3 ohms, repair ground circuit. GO to D3 - D3 CHECK THE TRANSFER CASE CLUTCH ACTUATOR CIRCUITS FOR SHORT TO GROUND
- Disconnect the AWD module connector C2371.
- Inspect harness connector for damage. Verify terminals are not splayed, damaged, or pushed out of the connector.
- Disconnect the transfer case connector C350.
- Inspect harness connector for damage. Verify terminals are not splayed, damaged, or pushed out of the connector.
- Measure:
Positive Lead Measurement / Action Negative Lead C2371-3 Ground C3841-2 Ground
Are the resistances greater than 10, 000 ohms?
Yes GO to D4 No REPAIR the short to ground. - D4 CHECK THE TRANSFER CASE CLUTCH ACTUATOR CIRCUITS FOR HIGH RESISTANCE
- Disconnect the AWD module connector C3841.
- Disconnect the transfer case clutch actuator connector C350.
Are the resistances less than 3 ohms?
Yes GO to D5 No REPAIR the open circuit. - D5 CHECK THE TRANSFER CASE CLUTCH ACTUATOR CIRCUITS FOR A SHORT TOGETHER
- Disconnect the AWD module connector C2371.
- Disconnect the transfer case clutch actuator connector C350.
Is the resistance greater than 10, 000 ohms?
Yes GO to D6 No REPAIR the short circuit. - D6 CHECK TRANSFER CASE REDUCTION GEARSET
- Remove transfer case clutch actuator.
- Manually turn transfer case clutch shaft counter clockwise to hard stop.
- Rotate actuator shaft clockwise to soft stop. It may take up to 25 turns stop to stop.
Does the clutch shaft hit both stop points as described?
Yes INSTALL a new transfer case clutch actuator. REFER to: Transfer Case Shift Motor . No INSTALL a new transfer case. REFER to: Transfer Case .