DTC Diagnosis Procedure
- CHECK FLEXRAY COMMUNICATION CIRCUIT
- Turn the ignition switch OFF.
- Disconnect each control module harness connector.
- Check the continuity between each control module harness connector.
Steering force control module
Steering angle main control module
Continuity
Connector
Terminal
Connector
Terminal
M71
19
E26
19
Existed
20
20
Steering angle main control module
Steering angle sub control module
Continuity
Connector
Terminal
Connector
Terminal
E26
19
E29
19
Existed
20
20
Steering force control module
Steering angle sub control module
Continuity
Connector
Terminal
Connector
Terminal
M71
19
E29
19
Existed
20
20
- Check the continuity between control module harness connector and ground.
Steering force control module
--
Continuity
Connector
Terminal
M71
19
Ground
Not existed
20
Steering angle main control module
--
Continuity
Connector
Terminal
E26
19
Ground
Not existed
20
Steering angle sub control module
--
Continuity
Connector
Terminal
E29
19
Ground
Not existed
20
Is the inspection result normal?
YES
GO TO 2.
NO
Repair or replace error-detected part.
- CHECK STEERING FORCE CONTROL MODULE POWER SUPPLY CIRCUIT (1)
- Turn the ignition switch OFF.
- Disconnect steering force control module harness connector.
- Check the voltage between steering force control module harness connector and ground.
+
--
Voltage
Steering force control module
Connector
Terminal
M72
34
Ground
10.5 - 16.0 V
Is the inspection result normal?
YES
GO TO 4.
NO
GO TO 3.
- CHECK STEERING FORCE CONTROL MODULE POWER SUPPLY CIRCUIT (2)
- Check the 60 A fusible link (No. G). (With pre-crash seat belt system)
- Check the 60 A fusible link (No. I). (Without pre-crash seat belt system)
- Check the harness for open or short between steering force control module harness connector No. 34 terminal and the 60 A fusible link (No. G). (With pre-crash seat belt system)
- Check the harness for open or short between steering angle sub control module harness connector No. 34 terminal and the 60 A fusible link (No. I). (Without pre-crash seat belt system)
Is the inspection result normal?
YES
Perform the trouble diagnosis for 12 V battery power supply circuit.
NO
Repair or replace error-detected parts.
- CHECK STEERING ANGLE MAIN CONTROL MODULE POWER SUPPLY CIRCUIT (1)
- Disconnect steering angle main control module harness connector.
- Check the voltage between steering angle main control module harness connector and ground.
+
--
Voltage
Steering angle main control module
Connector
Terminal
E27
34
Ground
10.5 - 16.0 V
Is the inspection result normal?
YES
GO TO 6.
NO
GO TO 5.
- CHECK STEERING ANGLE MAIN CONTROL MODULE POWER SUPPLY CIRCUIT (2)
- Check the 100 A fusible link (No. J).
- Check the harness for open or short between steering angle main control module harness connector No. 34 terminal and the 100 A fusible link (No. J).
Is the inspection result normal?
YES
Perform the trouble diagnosis for 12 V battery power supply circuit.
NO
Repair or replace error-detected parts.
- CHECK STEERING ANGLE SUB CONTROL MODULE POWER SUPPLY CIRCUIT (1)
- Disconnect steering angle sub control module harness connector.
- Check the voltage between steering angle sub control module harness connector and ground.
+
--
Voltage
Steering angle sub control module
Connector
Terminal
E30
34
Ground
10.5 - 16.0 V
Is the inspection result normal?
YES
GO TO 8.
NO
GO TO 7.
- CHECK STEERING ANGLE SUB CONTROL MODULE POWER SUPPLY CIRCUIT (2)
- Check the 100 A fusible link (No. H). (With pre-crash seat belt system)
- Check the 100 A fusible link (No. K). (Without pre-crash seat belt system)
- Check the harness for open or short between steering angle sub control module harness connector No. 34 terminal and the 100 A fusible link (No. H). (With pre-crash seat belt system)
- Check the harness for open or short between steering angle sub control module harness connector No. 34 terminal and the 100 A fusible link (No. K). (Without pre-crash seat belt system)
Is the inspection result normal?
YES
Perform the trouble diagnosis for 12 V battery power supply circuit.
NO
Repair or replace error-detected parts.
- CHECK IGNITION POWER SUPPLY CIRCUIT
Check ignition power supply circuit. Refer to Diagnosis Procedure .
Is the inspection result normal?
YES
GO TO 9.
NO
Repair or replace error-detected parts.
- CHECK INTERMITTENT INCIDENT
- Turn the ignition switch OFF.
- Check enlarged contact spring of terminal. Refer to Inspection .
- Perform intermittent incident while turning steering wheel. Refer to Inspection .
Is the inspection result normal?
YES
Replace steering angle main control module, steering angle sub control module and steering force control module. Refer to STEERING ANGLE MAIN CONTROL MODULE : Removal & Installation , STEERING ANGLE SUB CONTROL MODULE : Removal & Installation and STEERING FORCE CONTROL MODULE : Removal & Installation .
NO
Repair or replace error-detected part.