If the MDPS ECM gets wrong signals from TCU, it sets C1646.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
TCU CAN message monitoring | 1. Poor connection 2. Open or short in CAN communication line 3. Faulty TCU. |
Enable Conditions |
•
IG ON or Engine ON | |
Diagnostic Time |
•
500ms | |
Threshold value |
•
when the abnomal messages are detected
•
7.5V < IGN voltage< 16.5V | |
Fail-Safe |
•
Motor : ON
•
Relay : ON
•
EPS Warning lamp : OFF |
