Nissan’s electro-hydraulic energy steering system gives the identical really feel of a traditional hydraulic energy steering system whereas enhancing gas financial system by utilizing an electrical motor to energy the pump. The system is comprised of the electro-hydraulic pump meeting, management module and steering gear.
The facility steering module is on high of the pump, and the motor controls the pace of the ability steering pump in response to automobile pace and steering angle. By altering the pump pace, the module controls the steering help drive. The management module is linked to the hi-speed CAN bus that ties the engine management module (ECM) and ABS module. The ABS module gives automobile pace and steering angle, and torque information to the ability steering system. The connection to the ECM permits the alternator to offer sufficient energy when the pump is working.
The management module screens the hydraulic stress output and temperature. After the engine began, the hydraulic pump electrical energy steering system performs a self-diagnostic take a look at. If a malfunction happens within the system, the fail-safe perform stops the hydraulic pump or restricts operation.
When the hydraulic pump is working and help drive is generated, the hydraulic pump electrical energy steering warning lamp is OFF. When the hydraulic pump electrical energy steering system is stopped by the fail-safe or protecting features and steering help drive isn’t being generated, the steering will go to a guide operation. The electrical energy steering warning lamp turns ON. The system is attempting to forestall the pump from working with out fluid, which can harm the pump unit.
The management module additionally screens the temperature of the motor and pump. Throughout common operation, the fluid temperature shouldn’t exceed 194º F. When the system sees temperatures greater than the restrict, the warning lamp turns ON and help is restricted or turned off fully.
There are a number of causes of extreme inner temperatures. For instance, if the motive force performs parking maneuvers for a very long time with fast motion of the steering wheel lock-to-lock, the pump can overheat. If the steering is held at full lock, the pump can overheat. When this occurs, the system will retailer code C160A if an overheating situation has occurred.
If the alignment is out of specification and the motive force is preventing a steering pull, it may well trigger the ability steering pump to work tougher and generate extra warmth. It might additionally occur if the tire inflation stress isn’t equal. Why? The pace of the pump is dependent upon the angle of the steering and the pace of the automobile.
When this occurs, the system will retailer code C160A if an overheating situation has occurred. When an occasion happens, it’ll generate DTCs that may be learn with a scan instrument. A code for “sure steering help drive” means the operation of the pump was decreased to forestall overheating. A “guide steering state” signifies the pump was totally disabled.
C1143: Sure Steering Help Pressure
C1601: Guide Steering State
C1606: Guide Steering State
C1607: Sure Steering Help Pressure
C1608: Guide Steering State
• Many of the protecting or fail-safe modes will cease if the engine is restarted. Nonetheless, it is a steady monitor, so chances are high the code will return shortly.