NO.1 MASTER WARNING LIGHT DOES NOT GO OUT EVEN THOUGH ENGINE HAS STARTED [ELECTRIC POWER STEERING (EPS)]

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1
Master warning light does not go out even though engine has started.
TROUBLESHOOTING HINTS
•  EPS system malfunction.
?  Wiring harness malfunction
?  Connector condition malfunction
?  Torque sensor malfunction
?  EPS motor malfunction
?  Fuse malfunction
?  EPS control module malfunction
•  EPS control module detects an EPS system malfunction even though the EPS system is normal.
•  CAN communication line and/or CAN signal malfunction.
?  Vehicle speed signal error
?  Engine speed signal error
?  CAN wiring harness malfunction
•  CAN wiring harness malfunction.
?  Malfunction in wiring harness between EPS control module and instrument cluster
•  Instrument cluster configuration procedure was not completed properly.

Diagnostic procedure

STEP

INSPECTION

ACTION
1
•  Switch the ignition OFF and maintain this condition approx. 1 minute.
•  Switch the ignition ON (engine on).
•  Perform the DTC inspection.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [ELECTRIC POWER STEERING (EPS)].)
No
Go to the next step.
2
•  Turn off the master warning light at instrument cluster using the “WL+IL” of the M-MDS active command modes function.
•  Does the master warning light turn off?
Yes
EPS control module malfunction.
Replace the EPS control module.
(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)
No
Perform the instrument cluster configuration, then repeat the inspection from Step 1.
(See INSTRUMENT CLUSTER CONFIGURATION (USING AS-BUILT DATA).)
If the malfunction recurs, replace the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)