NANO

ELECTRICAL 36 Sr No DTC Code DTC Descriptio n Minimum Time for Fault Setting / Tester Visibility, Assuming Fault was created while Ignition was OFF Impact on customer Probable cause Investigation/Rectificati on/Repair action 6 U0101 08 Lost Communic ation With TCM - Bus Signal / Message Failures 1 to 1.25s Gear cannot be changed. TCM will go into default mode. TCM Lamp ON 1. TCM ECU is connected properly in the vehicle. 2. TCM ECU battery/Ignition fuse is not connected properly in Fuse Relay Box. 3. Improper/ No Grounding. 4. Permanent open circuit failure in CAN High line of TCM stub (or connector) in wiring harness. 5. Permanent open circuit failure in CAN Low line of TCM stub (or connector) in wiring harness. 6. TCM ECU CAN High or Low line terminal back out at TCM wiring harness connector. 1. Check if TCM ECU is connected properly in the vehicle. 2. Check if TCM ECU Ignition/Battery fuse is connected properly in Fuse Relay Box (EFRB) , if fuse not present or blown connect/replace the fuse. 3. Check for ground line connected properly. 4. Check if TCM ECU CAN lines are connected properly in vehicle. 5. Repair the wiring harness.