FOREWORD
- If there is any vehicle malfunction complaint lodged by a customer, perform malfunction diagnosis according to the troubleshooting procedure.
Troubleshooting Procedure Chart. Scheme 9
Scheme 9: Troubleshooting Procedure Chart
Action for Non-Repeatable Malfunction
- If the malfunction does not recur, verify the malfunction cause by performing the following actions
Scheme 10
Scheme 11
- Verify that a DTC has been recorded in the memory using the M-MDS. (See «ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS»(ref-615420-S12875316042014051000000) ).
- Perform a simulation test in the simulation mode based on the repair order form, record the data at that time, and detect the malfunction cause.
- Shake the wiring harness or connector of the electrical component which is suspected to be the cause of the malfunction, and inspect for the occurrence of any malfunction or DTCs. (Scheme 10): Checking Electrical Components Wiring Harness And Connectors
- Inspect the female terminals for poor connection. (Scheme 11): Checking Female Terminals For Poor Connection
NO.1 ELECTRIC POWER STEERING (EPS) WARNING LIGHT DOES NOT ILLUMINATE WITH IGNITION SWITCHED ON
| 1 | Electric power steering (EPS) warning light does not illuminate with ignition switched ON. |
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| TROUBLESHOOTING HINTS EPS warning light circuit malfunction in the instrument cluster. An error originates from the EPS CM, and the off signal is generated. EPS CM malfunction |
NO.2 ELECTRIC POWER STEERING (EPS) WARNING LIGHT DOES NOT GO OUT EVEN THOUGH ENGINE HAS STARTED
| 2 | Electric power steering (EPS) warning light does not go out even though engine has started. |
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| TROUBLESHOOTING HINTS EPS system malfunction. Wiring harness malfunction Connector condition malfunction Torque sensor malfunction EPS motor malfunction Fuse malfunction EPS CM malfunction EPS CM detects an EPS system malfunction even though the EPS system is normal. CAN communication line and/or CAN signal malfunction. Vehicle speed signal malfunction Engine speed signal malfunction CAN wiring harness malfunction EPS warning light circuit malfunction in the instrument cluster. CAN wiring harness malfunction. Malfunction in wiring harness between EPS CM and instrument cluster Instrument cluster configuration procedure was not completed properly. |
NO.3 POWER ASSIST DIFFERS BETWEEN RIGHT AND LEFT TURNS
| 3 | Power assist differs between right and left turns. |
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| TROUBLESHOOTING HINTS Steering gear and linkage malfunction. EPS CM malfunction. Poor connection of EPS CM connector, terminal damage. The steering wheel angle neutral position automatic learning function has not been operated. NOTE: If the right and left wheels are rotated freely at the same speed with the vehicle jacked up, the EPS CM may learn the steering angle incorrectly. The steering angle learned by the EPS CM is cleared when 1 min. or more has elapsed after the ignition was switched off. |
| NOTE |
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| If the right and left wheels are rotated freely at the same speed with the vehicle jacked up, the EPS CM may learn the steering angle incorrectly. The steering angle learned by the EPS CM is cleared when 1 min. or more has elapsed after the ignition was switched off. |
