TIAGO BSVI MCE - SERVICE MANUAL

STEERING 27 B. ELECTRICAL TROUBLESHOOTING Concern Cause Remedy Lack of Support Steering column failure 1. Read error memory with diagnostic tool. 2. Remedy failure or replace steering column 3. Read DTC with Diagnostic tool Cable splice on steering column vehicle wiring harness defective or not plugged in correctly 1. Check cable splice / plug in correctly 2. If cable splice damaged, replace 3. vehicle wiring harness or steering column 4. Read DTC with Diagnostic tool Vehicle power supply at power connector insufficient 1. Check vehicle power supply at power connector between the pins 2. Nominal value: greater than 9 V 3. Check fuse/wiring harness in vehicle or replace it 4. Read DTC with Diagnostic tool Vehicle power supply insufficient at vehicle signal connector 1. Check vehicle power supply between pins on terminal 15 and ground/earth 2. Nominal value: greater than 9 V 3. Check fuse/wiring harness in vehicle or replace it 4. Read DTC with Diagnostic tool Faulty CAN bus signal in vehicle signal connector 1. Check differential voltage between CANL and CANH 2. Nominal value: 0.1...1.0 V (value fluctuates) 3. Check terminating resistor between CANL and CANH 4. Nominal value: approx. 60 5. Physical check of the CAN bus. 6. Read DTC with Diagnostic 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 1. WSS /VSS Sensor need to replace. 2. WSS?VSS cable faulty 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 1. Main ECU communication issue 2. Cluster RPM mis-communication Note : CAN signal / cluster RPM for CEPS. Error code (DTC) may generated related to CEPS) Need to replace problem making part . Not CEPS .