MECHANICAL TROUBLESHOOTING • signal connector Check differential voltage 1. between CANL and CANH Nominal value: 0.1...1.0 V 2. (value fluctuates) Check terminating resistor 3. between CANL and CANH Nominal value: approx. 60 4. Physical check of the CAN 5. bus. Read DTC with Diagnostic 6. tool Over Heat Protection (OHP) When a driver turns steering LH/RH side continuously (more than 10times) or lock position for more 30 sec, CEPS will get over heated & CEPS power will cut off to avoid over heat damage of CEPS parts like motor / ECU /Sensor Note : It common phenomenon of CEPS, no part need to replace part. (Warning light will not ON) Vehicle ignition off for 3min , then drive. Steering will cool down . Work perfectly. Wheel / vehicle peed sensor mal- function WSS /VSS Sensor need to 1. replace. 2WSS?VSS cable faulty 2. need to check. Note : Wheel /Vehicle speed or input for CEPS. Error code (DTC) may generated related to CEPS. Need to replace problem making part . Not CEPS . CAN Communication / Cluster malfunction Main ECU communication 1. issue Cluster RPM mis- 2. communication Note : CAN signal / cluster RPM for CEPS. Error code (DTC) may generated related to CEPS) Need to replace problem making part . Not CEPS . Concern Cause Remedy Noises in the steering column or steering gear Mechanical error/damage in the steering column/steering gear Replace steering 1. column/steering gear No precise straight-ahead driving possible Play in steering column (line) Check play in steering 1. column (line) Replace defective parts 2. STEERING (MANDO) 30
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