2.3.5.1.1 System overview ............................................................................... 154 2.3.5.1.2 EPB components of EPB system ................................................... 154 2.3.5.2 Basic control Function ................................................................................. 155 2.3.5.3 Security strategy and failure types of EPB ............................................... 156 2.3.5.3.1 EPB system failure types ................................................................. 156 2.3.5.3.2 EPBi ....................................................................................................
157 2.4 Steering system .................................................................................................................. 159 2.4.1 Steering system overview ...................................................................................... 159 2.4.2 Basic parameters ..................................................................................................... 159 2.4.3 Description and operation ...................................................................................... 159 2.4.3.1 Component description ...............................................................................
159 2.4.3.1.1 Steering wheel and steering column .............................................. 159 2.4.3.1.2 Steering gear ..................................................................................... 160 2.4.3.2 General inspection ....................................................................................... 160 2.4.3.2.1 Check the clearance of steering wheel .......................................... 160 2.4.3.2.2 Inspection of steering control force ................................................ 160 2.4.3.2.3 Steering drive organization inspection ...........................................
161 2.4.3.2.4 Check the performance of alignment ............................................. 161 2.4.4 Fault diagnosis and testing .................................................................................... 161 2.4.4.1 Inspection and confirmation ........................................................................ 161 2.4.4.2 Failure Symptom Table ................................................................................ 161 2.4.5 Rack and pinion mechanical steering gear assembly ........................................ 162 2.4.5.1 Torque specifications ...................................................................................
162 2.4.5.2 Description and operation ........................................................................... 163 2.4.5.2.1 System overview ............................................................................... 163 2.4.5.2.2 Structural schematic ......................................................................... 163 2.4.5.2.3 Removal and installation .................................................................. 163 2.4.6 Electric steering column assembly ....................................................................... 164 2.4.6.1 Torque specifications ...................................................................................
164 2.4.6.2 Description and operation ........................................................................... 165 2.4.6.2.1 System overview ............................................................................... 165 2.4.6.2.2 Component diagram ......................................................................... 165 2.4.6.2.3 Removal and installation .................................................................. 165 2.4.6.3 Fault diagnosis and testing ......................................................................... 167 2.4.6.3.1 ASP calibration of steering wheel angle zero position ................
167 2.4.6.3.2 EPS failure inspection of EPS warning lamp ................................ 167 2.4.6.3.3 Diagnosis of fault codes ................................................................... 167 2.4.6.3.4 Other fault codes ............................................................................... 177 2.4.6.4 Function inspection ...................................................................................... 178 2.4.6.4.1 System self-diagnosis ...................................................................... 180 Part III New Energy System .............................................................................................................
183 3.1 Vehicle Controller Assembly .............................................................................................. 183 3.1.1 Specifications ........................................................................................................... 183 3.1.1.1 Torque specifications ................................................................................... 183 3.1.2 Description and operation ...................................................................................... 183 3.1.2.1 Working principle introduction ....................................................................
183 3.1.2.2 Location diagram of components ............................................................... 183 3.1.2.3 Connector interface definition ..................................................................... 184 3.1.3 Fault diagnosis ......................................................................................................... 185 3.1.3.1 DTC fault diagnosis ...................................................................................... 186 3.1.3.2 Matters need attention .................................................................................
187 3.1.4 Removal and installation ........................................................................................ 187 3.1.4.1 Tightening torque .......................................................................................... 188 3.1.4.2 Special tool .................................................................................................... 188 3.2 T-BOX ................................................................................................................................... 188 3.2.1 Specifications ...........................................................................................................
188 3.2.1.1 Torque specifications ................................................................................... 188 V