P059F
DTC P059F or U0284
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC U0284
- Lost Communication with Active Grille Air Shutter 1 Motor Module
DTC P059F
- Active Grille Air Shutter Performance
DTC P069E
- Fuel Pump Control Module Requested MIL Illumination
Diagnostic Fault Information
Circuit/System Description
The active grille air shutter actuator closes louvers at the front bumper to enhance vehicle aerodynamics in driving situations where cooling and A/C loads are relatively low and high levels of front end airflow are not required. If high levels of airflow are required the active grille air shutter actuator opens the louvers. The control signal from the fuel pump control module, ignition and ground circuits enable the active grille air shutter actuator to operate. If the conditions for opening the louvers are reached the fuel pump control module commands the active grille air shutter actuator to open the louvers.
Conditions for Running the DTC
* The ambient temperature is above 2.5°C (36.5°F).
* The engine is running.
* The ignition voltage is greater than 10 V.
* The DTC runs continuously when the above conditions are met.
* If the ambient temperature is below 10°C (50°F) when the vehicle is first started, this DTC will be disabled.
Conditions for Setting the DTC
* The DTC P059F will be set during a key cycle when the commanded louver position can not be achieved after 3 attempts are made to move the louver. The DTC will be stored as current for this key cycle but the malfunction indicator lamp (MIL) will not be illuminated.
* On the next key cycle the louver will be commanded to move again. If the commanded louver position can not be achieved after 3 more attempts, the DTC P069E will set, the MIL will be illuminated and DTC P059F will be set as current.
* The DTC P069E will set if any fuel pump control module related DTC is set.
* The DTC U0284 will set if there is no communication on the bi-directional control circuit.
Action Taken When the DTC Sets
* DTC P059F is a type B DTC.
* DTC P069E is a type A DTC.
* DTC P069E will continue to be current or active as long as the fuel pump control module is requesting MIL illumination.
Conditions for Clearing the DTC
* DTC P059F is a type B DTC.
* DTC P069E is a type A DTC.
Reference Information
Schematic Reference
Active Grille Air Shutter Schematics [1][2]Bumper
Connector End View Reference
Component Connector End Views
Description and Operation
Active Grille Air Shutter Description and Operation Description and Operation
Electrical Information Reference
* Circuit Testing
* Connector Repairs
* Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
1. Ignition ON.
2. Verify the active grille air shutter actuator opens and closes the louvers at the front bumper when performing the Active Grille Air Shutter Actuator test with a scan tool.
• If the louvers at the front bumper do not open and close
Refer to Circuit/System Testing.
• If the louvers at the front bumper open and close
3. Verify none of the following conditions are present:
* Snow or ice packed in the front fascia which prevents the louvers from moving.
* Debris or foreign objects which prevent the louvers from moving.
• If any of the conditions are present
Clear any snow, ice or foreign objects from the front grille.
• If none of the conditions are present
4. All OK
Circuit/System Testing
1. Ignition OFF, and all vehicle systems OFF, disconnect the harness connector at the M96 active grille air shutter actuator. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal 2 and ground.
• If 10 ohms or greater
1. Ignition OFF.
2. Test for less than 2 ohms in the ground circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, repair the open/high resistance in the ground connection.
• If less than 10 ohms
3. Ignition ON.
4. Verify a test lamp illuminates between the ignition circuit terminal 3 and ground.
• If the test lamp does not illuminate and the circuit fuse is good
1. Ignition OFF.
2. Test for less than 2 ohms in the ignition circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.
• If the test lamp does not illuminate and the circuit fuse is open
1. Ignition OFF.
2. Test for infinite resistance between the ignition circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance, replace the M96 active grille air shutter actuator.
• If the test lamp illuminates
5. Connect a test lamp between the control circuit terminal 1 and the ignition circuit terminal 3.
6. Verify the test lamp blinks ON and OFF.
• If the test lamp is always OFF
1. Ignition OFF, disconnect the harness connector at the K27 fuel pump control module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V
3. Ignition OFF.
4. Test for less than 2 ohms between the K27 fuel pump control module control circuit terminal 3 and the M96 active grille air shutter actuator terminal 1.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the K27 fuel pump control module.
• If the test lamp is always ON
1. Ignition OFF, disconnect the harness connector at the K27 fuel pump control module.
2. Test for infinite resistance between the control circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance, replace the K27 fuel pump control module.
• If the test lamp turns ON and OFF
7. Ignition OFF, connector the harness connector at the M96 active grille air shutter actuator. Disconnect the harness connector at the K27 fuel pump control module, Ignition ON.
8. Test for greater than 11 V between the control circuit terminal 12 and ground.
• If 11 V or less
1. Ignition OFF, disconnect the harness connector at the M96 active grille air shutter actuator.
2. Test for less than 2 ohms between the K27 fuel pump control module control circuit terminal 12 and the M96 active grille air shutter actuator terminal 1.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the M96 active grille air shutter actuator.
• If greater than 11 V
9. Test or replace the M96 active grille air shutter actuator.
10. Verify DTC U0284 is not set.
• If the DTC is set
Replace the K27 fuel pump control module.
• If the DTC is not set
11. All OK
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
* Front Bumper Lower Shutter Actuator Replacement Service and Repair
* Control Module References for fuel pump control module replacement, programming and setup