(2) Warning lamp (DTC) / CAN Line error

2 - 1 Checking Connectors and Wiring

Checking Connectors and Wiring

Check for damage, push-back, or improper connection in each connector and wiring.

Check the wiring on the vehicle side.

Check for open/short-circuit due to faulty connection, damage, or foreign substance.

Battery Connector		Vehicle signal Connector
Courtesy of HYUNDAI MOTOR AMERICA		Courtesy of HYUNDAI MOTOR AMERICA
Pin NO.	Pin name	Pin NO.	Pin name
1	Battery (+)	1	Ignition
2	Battery (-)	2	-
		3	-
		4	-
		5	-
		6	-
		7	CAN_High
		8	CAN_LOW

Check the wiring on the ECU side (motor 3-phase power).
- Check for open/short-circuit due to faulty connection, damage, or foreign substance.
Fig 1: ECU Connector Terminals
Courtesy of HYUNDAI MOTOR AMERICA

Check the motor connector.

Terminal Expansion and damage

Courtesy of HYUNDAI MOTOR AMERICA

NOTE: Must be replaced the MDPS motor if occur terminal expansion and damage.

Check the motor wiring.

Courtesy of HYUNDAI MOTOR AMERICA

NOTE: Must be replaced the MDPS motor if occur damage or problem.

Remove the grommet (A) and then check the wiring on the TAS side (B) and ECU side (C).

- Check for damage, push-back, or improper connection in each connector and wiring.

Courtesy of HYUNDAI MOTOR AMERICA

NOTE:

Must be replaced the MDPS assembly if occurs damage or problem. Check the TAS wiring in case of C1259/1290 DTC.

2 - 2 Inspection Items per DTC

DTC	Problem	First analysis method	How to repair
C1290	Torque sensor signal error	First erase DTC, check connector connection.	In case of reoccurrence, replace column & housing.
C1112	Torque sensor voltage error	Check connector between torque sensor and ECU.	In case of reoccurrence, replace ECU.
C1705	ECU hardware error	First erase DTC and then check, check ECU connector.
C1604	ECU over/discharge error
C2413	ECU hardware error
C2400	Motor signal error		In case of reoccurrence, replace motor.
C2401	Motor circuit error		In case of reoccurrence, replace motor.
C2412	Motor voltage supply error	First erase DTC and check, Check ECU/motor connector.	First replace ECU. In case of reoccurrence, replace motor.
C1259	Angle sensor signal error	After Resetting zero point & erasing DTC, check connector connection condition.	In case of reoccurrence, replace column & Housing.
C1261	Zero-setting error	After Resetting zero point, recheck.	Reset the zero-setting.
C1102	Battery voltage problem	Check battery voltage condition.	Recharge battery voltage.
C1696, C1697	SPAS signal error	Check SPAS.	Erase DTC (MDPS is not to be replaced).
C1612, C1646	TCU signal error	Check TCU.
C1628, C1656	Instrument cluster signal error	Check instrument cluster.
C1692, C1693	VSM signal error	Check VSM.
C1260	Angle sensor signal error	After resetting the angle, recheck. If C1259 does not occur, check CAN line.	Reset Angle sensor. Erase DTC.
C1611	CAN time out EMS	Check G-SCAN condition. Check connector connection. Check ECU CAN line. Check MDPS ground line.	Check the EMS CAN Line.
C1616	CAN BUS OFF		Check the chassis CAN Line.
C1622	Vehicle speed signal error		Check the EMS (Engine ECU).
C1623, C1687, C1688	Can time out Steering angle sensor	Check MDPS Power Connector & FUSE Check MDPS Ground line Check MDPS ECU / VSM CAN line Communication status with GDS	In case of reoccurrence, replace ECU (Heavy steering and no communication)