2009 Nissan Cube - Steering Control System (Section STC) (32 pages)
Download Steering Control System (Section STC)
Manual Description
Wiring Diagram - ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM -21, ePS WARNING LAMP DOES NOT TURN ON 25, ePS WARNING LAMP DOES NOT TURN, sTEERING WHEEL TURNING FORCE IS.
(SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" 30, precaution Necessary for Steering Wheel Rotation after Battery Disconnect 30, service Notice or Precautions EPS System 31, interview the customer to obtain as much information as possible about the conditions environment under.
If a DTC exists, perform following operations, check that the root cause clarified with DTC matches to the malfunction information described by cus- F, do malfunction information DTC exist, malfunction information exists but no DTC.
No malfunction information, but DTC exists, check the malfunction described by the customer vehicle, record the status of each signal when a symptom occurs with Data Monitor” CONSULT-III, inspect the relation of the information and the condition when it occurs.
Perform the DTC conformation procedure” to the detected DTC and check that the DTC detected again, refer to "DTC Inspection Priority Chart" when multiple DTCs are detected, and then judge order, >> Follow "How to Follow Test Groups in Trouble Diagnosis" check, perform the inspection with the component diagnosis” applicable system.
The component diagnosis” mainly consists of the check an open circuit, use the Symptom diagnosis” from the symptom inspection result in step 4, the circuit check in the diagnosis procedure also requires the check for a short circuit, repair or replace the part detected malfunctioning.
After repairing or replacing, reinstall/reconnect parts or connectors removed/disconnected in the component diagnosis”, and then erase DTC, perform the DTC confirmation procedure” or component Inspection” to check that the repair is correctly performed, yES >> Trouble diagnosis completed, >> The symptom is reproduced.
EPS control unit performs an arithmetical operation on data, such as steering wheel turning force (sensor, signal) from the torque sensor, vehicle speed signal, etc, to the EPS motor according driving condition, ePS control unit decreases the output signal to EPS motor while extremely using the power steering function (e.
The previous state is changed to manual steering state, self-diagnosis can be done with CONSULT-III, ePS control unit will decrease assistance under following 2 conditions, - Extensive steering at low speed will cause the ECU and MOTOR to heat up, once temperature reaches critical point ECU will reduce current to reduce heat up.
- Holding steering on rack-end (full lock) for 1 second will cause the system engage rack-end protection, this reduces assistance down to 50% in order to prevent heat up, when steering released or turned away rack-end, - Communicates the signal from each control unit via CAN communication.
Transmits mainly the following signals to EPS control unit via CAN communication, ePS warning lamp signal is received from the EPS control unit via CAN communication, reduction gear increases the assist torque provided EPS, motor with worm gears, and outputs column shaft.
DIAGNOSIS SYSTEM (EPS CONTROL UNIT), cONSULT-III can display each diagnostic item using the diagnostic test modes shown following, steering column assembly number can be read, self-diagnostic results can be read erased quickly.
Input/Output data in the EPS control unit can be read, displays the part number stored control unit, if CAN COMM CIRCUIT [U1000]” is displayed with other DTCs, first perform trouble diagnosis, displays the power supply voltage EPS control unit.
Displays steering wheel turning force detected by torque sensor, displays the current value consumed by EPS motor, displays the current commanded value EPS motor.
Manual Description
Wiring Diagram - ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM -21, ePS WARNING LAMP DOES NOT TURN ON 25, ePS WARNING LAMP DOES NOT TURN, sTEERING WHEEL TURNING FORCE IS.
(SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" 30, precaution Necessary for Steering Wheel Rotation after Battery Disconnect 30, service Notice or Precautions EPS System 31, interview the customer to obtain as much information as possible about the conditions environment under.
If a DTC exists, perform following operations, check that the root cause clarified with DTC matches to the malfunction information described by cus- F, do malfunction information DTC exist, malfunction information exists but no DTC.
No malfunction information, but DTC exists, check the malfunction described by the customer vehicle, record the status of each signal when a symptom occurs with Data Monitor” CONSULT-III, inspect the relation of the information and the condition when it occurs.
Perform the DTC conformation procedure” to the detected DTC and check that the DTC detected again, refer to "DTC Inspection Priority Chart" when multiple DTCs are detected, and then judge order, >> Follow "How to Follow Test Groups in Trouble Diagnosis" check, perform the inspection with the component diagnosis” applicable system.
The component diagnosis” mainly consists of the check an open circuit, use the Symptom diagnosis” from the symptom inspection result in step 4, the circuit check in the diagnosis procedure also requires the check for a short circuit, repair or replace the part detected malfunctioning.
After repairing or replacing, reinstall/reconnect parts or connectors removed/disconnected in the component diagnosis”, and then erase DTC, perform the DTC confirmation procedure” or component Inspection” to check that the repair is correctly performed, yES >> Trouble diagnosis completed, >> The symptom is reproduced.
EPS control unit performs an arithmetical operation on data, such as steering wheel turning force (sensor, signal) from the torque sensor, vehicle speed signal, etc, to the EPS motor according driving condition, ePS control unit decreases the output signal to EPS motor while extremely using the power steering function (e.
The previous state is changed to manual steering state, self-diagnosis can be done with CONSULT-III, ePS control unit will decrease assistance under following 2 conditions, - Extensive steering at low speed will cause the ECU and MOTOR to heat up, once temperature reaches critical point ECU will reduce current to reduce heat up.
- Holding steering on rack-end (full lock) for 1 second will cause the system engage rack-end protection, this reduces assistance down to 50% in order to prevent heat up, when steering released or turned away rack-end, - Communicates the signal from each control unit via CAN communication.
Transmits mainly the following signals to EPS control unit via CAN communication, ePS warning lamp signal is received from the EPS control unit via CAN communication, reduction gear increases the assist torque provided EPS, motor with worm gears, and outputs column shaft.
DIAGNOSIS SYSTEM (EPS CONTROL UNIT), cONSULT-III can display each diagnostic item using the diagnostic test modes shown following, steering column assembly number can be read, self-diagnostic results can be read erased quickly.
Input/Output data in the EPS control unit can be read, displays the part number stored control unit, if CAN COMM CIRCUIT [U1000]” is displayed with other DTCs, first perform trouble diagnosis, displays the power supply voltage EPS control unit.
Displays steering wheel turning force detected by torque sensor, displays the current value consumed by EPS motor, displays the current commanded value EPS motor.
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