NO.3 POWER ASSIST DIFFERS BETWEEN RIGHT AND LEFT TURNS [ELECTRIC POWER STEERING (EPS)]
NO.3 POWER ASSIST DIFFERS BETWEEN RIGHT AND LEFT TURNS [ELECTRIC POWER STEERING (EPS)]
SM2335525
id0603a2801000
|
Troubleshooting item |
Power assist differs between right and left turns. |
|---|---|
|
Possible cause
|
• Steering gear and linkage malfunction.
• EPS control module malfunction.
• Poor connection of EPS control module connector, terminal damage.
• The steering wheel angle neutral position automatic learning function has not been operated.
|
Diagnostic Procedure
|
Step |
Inspection |
Results |
Action |
|---|---|---|---|
|
1
|
VERIFY EPS CONTROL MODULE DTCs
• Switch the ignition off and maintain this condition approx. 1 minute.
• Switch the ignition ON (engine on).
• Perform the DTC inspection. (See DTC INSPECTION.)
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
|
|
No
|
Go to the next step.
|
||
|
2
|
DETERMINE MALFUNCTIONING LOCATION
• Switch the ignition off and maintain this condition 2 min. or more.
• Switch the ignition ON (engine on).
• Drive 10 m {394 in} or above in a straight line at more than 10 km/h {6.2 mph}.
• Is there recurrence of malfunction?
|
Yes
|
Perform wheel alignment inspection.
(See FRONT WHEEL ALIGNMENT [(US)].)
(See REAR WHEEL ALIGNMENT [(US)].)
Perform the repair completion verification.
|
|
No
|
Temporary error occurred while learning steering wheel angle neutral position.
There is not malfunction in the EPS system.
|
||
|
Repair completion verification
|
VERIFY THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Has the malfunction symptom been eliminated?
|
Yes
|
Complete the symptom troubleshooting.
Explain to the customer what has been repaired.
|
|
No
|
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
|