Active stabilization is also known as dynamic response, active roll control or active cornering enhancement, and refers to the control of the front and rear stabilizer (or anti-roll) bars.
For information on the description and operation of the system: REFER to: Active Stabilization System (204-06 Ride and Handling Optimization, Description and Operation).
| Mechanical | Electrical |
|---|---|
|
|
| Symptom | Possible cause | Action |
|---|---|---|
| Poor on-center response |
| Carry out the manual bleed procedure. REFER to: Active Stabilization System Bleeding (204-06 Ride and Handling Optimization, General Procedures). Check the stabilizer bar bushes. REFER to: Front Stabilizer Bar (204-06 Ride and Handling Optimization, Removal and Installation) / Rear Stabilizer Bar (204-06 Ride and Handling Optimization, Removal and Installation). Check for residual pressure in the system. Check and calibrate the steering angle sensor, clear the adaptive data after calibration. REFER to: Steering Angle Sensor (211-02 Power Steering, Removal and Installation). |
| Asymmetrical response |
| Check and calibrate the steering angle sensor, clear the adaptive data after calibration. REFER to: Steering Angle Sensor (211-02 Power Steering, Removal and Installation). Calibrate the accelerometers using the approved diagnostic system. Carry out the manual bleed procedure. REFER to: Active Stabilization System Bleeding (204-06 Ride and Handling Optimization, General Procedures). |
| Excessive roll |
| Carry out the manual bleed procedure. REFER to: Active Stabilization System Bleeding (204-06 Ride and Handling Optimization, General Procedures). Check the stabilizer bar bushes and drop links. REFER to: Front Stabilizer Bar (204-06 Ride and Handling Optimization, Removal and Installation) / Rear Stabilizer Bar (204-06 Ride and Handling Optimization, Removal and Installation). |
| Powered roll-rock |
| Check for DTCs indicating any of the possible causes are present. |
| Oversteer or understeer |
| Check the stabilizer bar drop links and the system actuators. REFER to: Front Stabilizer Bar (204-06 Ride and Handling Optimization, Removal and Installation) / Rear Stabilizer Bar (204-06 Ride and Handling Optimization, Removal and Installation). |
Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).
| DTC | Description | Possible causes | Action |
|---|---|---|---|
| B1A8700 | Battery disconnection/control module reset |
| Check the harness and connectors, check the EMS relay, check the ground connections. |
| C111122 | Control lateral acceleration |
| Check for associated codes giving more information. Refer to the warranty policy and procedures manual if a module is suspect. |
| C111127 | Control lateral acceleration |
| Check for associated codes giving more information. Carry out the accelerometer tests using the approved diagnostic system. |
| C111200 | Roll angle |
| Check for associated codes giving more information. Refer to the warranty policy and procedures manual if a module is suspect. |
| C111229 | Roll angle |
| Check for associated codes giving more information. Refer to the warranty policy and procedures manual if a module is suspect. |
| C111300 | Off-Road determination |
| Check for associated codes giving more information. Refer to the warranty policy and procedures manual if a module is suspect. |
| C111400 | Roll axis torque |
| Check for associated codes giving more information. Refer to the warranty policy and procedures manual if a module is suspect. |
| C111629 | Torque/Pressure |
| Check for associated codes giving more information. Refer to the warranty policy and procedures manual if a module is suspect. |
| C111729 | Direction control valve(s) |
| Check for associated codes giving more information. Refer to the warranty policy and procedures manual if a module is suspect. |
| C111771 | Direction control valve(s) |
| Install a new valve block. REFER to: Valve Block (204-06 Ride and Handling Optimization, Removal and Installation). |
| C111795 | Direction control valve(s) |
| Check the valve connections and rectify as necessary. Check the direction control valves. Check the harnesses and connectors. |
| C111909 | Hydraulic pressure |
| Check and top up the fluid. Rectify leaks as necessary. For sticking/faulty valves, install a new valve block. REFER to: Valve Block (204-06 Ride and Handling Optimization, Removal and Installation). For a pressure transducer fault, install a new pressure transducer. REFER to: Valve Block Transducer (204-06 Ride and Handling Optimization, Removal and Installation). Install a new filter as necessary. REFER to: Valve Block Filter (204-06 Ride and Handling Optimization, Removal and Installation). Check the system actuators. |
| C111962 | Hydraulic pressure |
| Check and top up the fluid. Rectify leaks as necessary. For sticking/faulty valves, install a new valve block. REFER to: Valve Block (204-06 Ride and Handling Optimization, Removal and Installation). For a pressure transducer fault, install a new pressure transducer. REFER to: Valve Block Transducer (204-06 Ride and Handling Optimization, Removal and Installation). Install a new filter as necessary. REFER to: Valve Block Filter (204-06 Ride and Handling Optimization, Removal and Installation). Check the system actuators. Install new drop links or stabilizer bars as necessary. REFER to: Front Stabilizer Bar (204-06 Ride and Handling Optimization, Removal and Installation) / Rear Stabilizer Bar (204-06 Ride and Handling Optimization, Removal and Installation). Carry out the manual bleed procedure. REFER to: Active Stabilization System Bleeding (204-06 Ride and Handling Optimization, General Procedures). |
| C11197B | Hydraulic pressure |
| Check and top up the fluid. Rectify leaks as necessary. Install a new filter as necessary. REFER to: Valve Block Filter (204-06 Ride and Handling Optimization, Removal and Installation). Check and replace the pump as necessary. REFER to: Fluid Pump - V8 N/A 4.4L Petrol/V8 S/C 4.2L Petrol (204-06 Ride and Handling Optimization, Removal and Installation). Check the suction hose, rectify as necessary. |
| C111991 | Hydraulic pressure |
| For sticking/faulty valves, install a new valve block. REFER to: Valve Block (204-06 Ride and Handling Optimization, Removal and Installation). Clean the system, replace the fluid. Check and replace the return pipe as necessary. For a pressure transducer fault, install a new pressure transducer. REFER to: Valve Block Transducer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1A0001 | Dynamic response control module |
| Check the control module harness. Refer to the electrical guides. |
| C1A0004 | Dynamic response control module |
| Refer to the warranty policy and procedures manual if a module is suspect. |
| C1A0043 | Dynamic response control module |
| Refer to the warranty policy and procedures manual if a module is suspect. |
| C1A0045 | Dynamic response control module |
| Refer to the warranty policy and procedures manual if a module is suspect. |
| C1A0047 | Dynamic response control module |
| Refer to the warranty policy and procedures manual if a module is suspect. |
| C1A0052 | Dynamic response control module |
| Configure the new module using the approved diagnostic system |
| C1A0054 | Dynamic response control module |
| Configure the new module using the approved diagnostic system |
| C1A0916 | Pressure transducer signal |
| Check the pressure transducer circuit, rectify as necessary. Install a new pressure transducer as necessary. REFER to: Valve Block Transducer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1A0917 | Pressure transducer signal |
| Check the pressure transducer circuit, rectify as necessary. Install a new pressure transducer as necessary. REFER to: Valve Block Transducer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1A091C | Pressure transducer signal |
| For sticking/faulty valves, install a new valve block. REFER to: Valve Block (204-06 Ride and Handling Optimization, Removal and Installation). Install a new pressure transducer as necessary. REFER to: Valve Block Transducer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1A0926 | Pressure transducer signal |
| Check and top up the fluid. Install a new filter as necessary. REFER to: Valve Block Filter (204-06 Ride and Handling Optimization, Removal and Installation). Install a new pressure transducer as necessary. REFER to: Valve Block Transducer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1A9762 | Lateral accelerometer circuit |
| Check the accelerometers and brackets. Rectify as necessary. |
| C1B0312 | Directional control valve 1 |
| Check the directional control valve circuit. For sticking/faulty valves, install a new valve block. REFER to: Valve Block (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B0314 | Directional control valve 1 |
| Check the directional control valve circuit. Refer to the electrical guides. |
| C1B0318 | Directional control valve 1 |
| Check the directional control valve circuit. Refer to the electrical guides. |
| C1B0319 | Directional control valve 1 |
| Check the directional control valve circuit. Refer to the electrical guides. |
| C1B031D | Directional control valve 1 |
| Check the directional control valve circuit. Refer to the electrical guides. |
| C1B0400 | Hit current directional control valve 1 |
| Check the directional control valve circuit. Refer to the electrical guides. |
| C1B0500 | Hold current directional control valve 1 |
| Check the directional control valve circuit. Carry out the manual bleed procedure. REFER to: Active Stabilization System Bleeding (204-06 Ride and Handling Optimization, General Procedures). |
| C1B0600 | Off current directional control valve 1 |
| Check the directional control valve circuit with the control module connector disconnected. Refer to the electrical guides. |
| C1B0712 | Directional control valve 2 |
| Check the directional control valve circuit. For sticking/faulty valves, install a new valve block. REFER to: Valve Block (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B0714 | Directional control valve 2 |
| Check the directional control valve circuit. Refer to the electrical guides. |
| C1B0718 | Directional control valve 2 |
| Check the directional control valve circuit. Refer to the electrical guides. |
| C1B0719 | Directional control valve 2 |
| Check the directional control valve circuit. Refer to the electrical guides. |
| C1B071D | Directional control valve 2 |
| Check the directional control valve circuit. Refer to the electrical guides. |
| C1B0800 | Hit current directional control valve 2 |
| Check the directional control valve circuit. Refer to the electrical guides. |
| C1B0900 | Hold current directional control valve 2 |
| Check the directional control valve circuit. Carry out the manual bleed procedure. REFER to: Active Stabilization System Bleeding (204-06 Ride and Handling Optimization, General Procedures). |
| C1B1000 | Off current directional control valve 2 |
| Check the directional control valve circuit with the control module connector disconnected. Refer to the electrical guides. |
| C1B1112 | Pressure control valve (PCV) |
| Check the PCV circuit. Refer to the electrical guides. |
| C1B1114 | Pressure control valve (PCV) |
| Check the PCV circuit. Refer to the electrical guides. |
| C1B1118 | Pressure control valve (PCV) |
| Check the PCV circuit. Refer to the electrical guides. |
| C1B1119 | Pressure control valve (PCV) |
| Check the PCV circuit. Refer to the electrical guides. |
| C1B111D | Pressure control valve (PCV) |
| Check the PCV circuit. Refer to the electrical guides. |
| C1B1162 | Pressure control valve (PCV) |
| Check fluid level and condition. For sticking/faulty valves, install a new valve block. REFER to: Valve Block (204-06 Ride and Handling Optimization, Removal and Installation). Check the pump operation and hoses, rectify as necessary. Install a new pressure transducer as necessary. REFER to: Valve Block Transducer (204-06 Ride and Handling Optimization, Removal and Installation). Carry out the manual bleed procedure. REFER to: Active Stabilization System Bleeding (204-06 Ride and Handling Optimization, General Procedures). |
| C1B1164 | Pressure control valve (PCV) |
| Check the PCV circuit. Refer to the electrical guides. |
| C1B1212 | Lower lateral accelerometer circuit |
| Check the lower lateral accelerometer circuit. Refer to the electrical guides. |
| C1B1214 | Lower lateral accelerometer circuit |
| Check the lower lateral accelerometer circuit. Carry out the accelerometer tests using the approved diagnostic system. Install a new lower lateral accelerometer as necessary. REFER to: Lower Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B1222 | Lower lateral accelerometer circuit |
| Check the lower lateral accelerometer fitment, rectify as necessary. Check the lower lateral accelerometer circuit. Carry out the accelerometer tests using the approved diagnostic system. Install a new lower lateral accelerometer as necessary. REFER to: Lower Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B1226 | Lower lateral accelerometer circuit |
| Check the lower lateral accelerometer circuit. Carry out the accelerometer tests using the approved diagnostic system. Install a new lower lateral accelerometer as necessary. REFER to: Lower Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B1228 | Lower lateral accelerometer circuit |
| Check the lower lateral accelerometer fitment, rectify as necessary. Carry out the accelerometer tests using the approved diagnostic system. Install a new lower lateral accelerometer as necessary. REFER to: Lower Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B1276 | Lower lateral accelerometer circuit |
| Check the lower lateral accelerometer fitment, rectify as necessary. Carry out the accelerometer tests using the approved diagnostic system. Install a new lower lateral accelerometer as necessary. REFER to: Lower Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B1312 | Upper lateral accelerometer circuit |
| Check the upper accelerometer circuit. Carry out the accelerometer tests using the approved diagnostic system. Install a new upper lateral accelerometer as necessary. REFER to: Upper Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B1314 | Upper lateral accelerometer circuit |
| Check the upper accelerometer circuit. Carry out the accelerometer tests using the approved diagnostic system. Install a new upper lateral accelerometer as necessary. REFER to: Upper Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B1322 | Upper lateral accelerometer circuit |
| Check the upper lateral accelerometer fitment, rectify as necessary. Check the upper accelerometer circuit. Carry out the accelerometer tests using the approved diagnostic system. Install a new upper lateral accelerometer as necessary. REFER to: Upper Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B1326 | Upper lateral accelerometer circuit |
| Check the upper accelerometer circuit. Carry out the accelerometer tests using the approved diagnostic system. Install a new upper lateral accelerometer as necessary. REFER to: Upper Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B1328 | Upper lateral accelerometer circuit |
| Check the upper lateral accelerometer fitment, rectify as necessary. Carry out the accelerometer tests using the approved diagnostic system. Install a new upper lateral accelerometer as necessary. REFER to: Upper Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B1376 | Upper lateral accelerometer circuit |
| Check the upper lateral accelerometer fitment, rectify as necessary. Carry out the accelerometer tests using the approved diagnostic system. Install a new upper lateral accelerometer as necessary. REFER to: Upper Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B141C | Sensor supply 1 |
| Check the lower accelerometer and pressure transducer circuits. Carry out the accelerometer tests using the approved diagnostic system. Install a new lower lateral accelerometer as necessary. REFER to: Lower Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). Install a new pressure transducer as necessary. REFER to: Valve Block Transducer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B151C | Sensor supply 2 |
| Check the upper lateral accelerometer circuits. Carry out the accelerometer tests using the approved diagnostic system. Install a new upper lateral accelerometer as necessary. REFER to: Upper Accelerometer (204-06 Ride and Handling Optimization, Removal and Installation). |
| C1B181C | Control module supply voltage cross-reference check |
| Check the control module power and ground circuits. Check for charging system DTCs, rectify as necessary. REFER to: Charging System (414-00 Battery and Charging System - General Information, Diagnosis and Testing). |
| P14529 | Calculated torque error |
| Check for associated codes giving more information. Refer to the warranty policy and procedures manual if a module is suspect. |
| U007388 | Control module communication bus off |
| REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). |
| U010087 | Lost communication with the engine control module (ECM) |
| REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). |
| U010187 | Lost communication with the transmission control module (TCM) |
| REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). |
| U010287 | Lost communication with the transfer case control module (TCCM) |
| REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). |
| U012287 | Lost communication with the anti-lock brake (ABS) module |
| REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). |
| U012687 | Lost communication with the steering wheel rotation sensor |
| REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). |
| U013287 | Lost communication with the air suspension control module |
| REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). |
| U015587 | Lost communication with the instrument cluster module |
| REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). |
| U030055 | Module configuration does not match the vehicle configuration |
| Configure the module using the approved diagnostic system. |
| U040181 | Invalid data received from the ECM |
| Check for CAN or module DTCs. Check the power and ground circuits to the ECM, rectify as necessary. |
| U040281 | Invalid data received from the TCM |
| Check for CAN or module DTCs. Check the power and ground circuits to the TCM, rectify as necessary. |
| U040381 | Invalid data received from the TCCM |
| Check for CAN or module DTCs. Check the power and ground circuits to the TCCM, rectify as necessary. |
| U041681 | Invalid data received from the ABS module |
| Check for CAN or module DTCs. Check the power and ground circuits to the ABS module, rectify as necessary. |
| U042181 | Invalid data received from the air suspension control module |
| Check for CAN or module DTCs. Check the power and ground circuits to the air suspension control module, rectify as necessary. |
| U042881 | Invalid data received from the steering wheel rotation sensor |
| Check for CAN or module DTCs. Check the power and ground circuits to the steering wheel rotation sensor, rectify as necessary. |
| U042885 | Invalid data received from the steering wheel rotation sensor |
| Calibrate the steering wheel rotation sensor using the approved diagnostic system. Check for CAN or module DTCs. Check the power and ground circuits to the steering wheel rotation sensor, rectify as necessary. |
| U042886 | Invalid data received from the steering wheel rotation sensor |
| Calibrate the steering wheel rotation sensor using the approved diagnostic system. Check the wheel alignment, adjust as necessary. REFER to: Four-Wheel Alignment (204-00 Suspension System - General Information, General Procedures). Check for CAN or module DTCs. Check the power and ground circuits to the steering wheel rotation sensor, rectify as necessary. |
| U1A0400 | Vehicle speed CAN signal |
| Check for CAN or module DTCs. Check the power and ground circuits to the ABS module, rectify as necessary. |
| U1A1086 | Ignition status CAN signal |
| Check for associated codes giving more information. Refer to the warranty policy and procedures manual if a module is suspect. |
| U1A1449 | CAN initialization failure |
| Refer to the warranty policy and procedures manual if a module is suspect. |
| U200798 | Valve(s) |
| Check the filter and pipework. Check the pump, rectify as necessary. Check the fluid condition, replace and clean as necessary. Investigate the driving profile. |