NO.2 ELECTRIC POWER STEERING (EPS) WARNING LIGHT/MASTER WARNING LIGHT DOES NOT TURN OFF EVEN THOUGH ENGINE HAS STARTED [ELECTRIC POWER STEERING (EPS)]

id0603a2950800

2

Electric power steering (EPS) warning light/master warning light does not turn off even though engine has started.^*1

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 malfunction

―  Engine speed signal malfunction

―  CAN wiring harness malfunction

•  EPS warning light/Master warning light circuit malfunction in the instrument cluster.

•  CAN wiring harness malfunction.

―  Malfunction in wiring harness between EPS control module and instrument cluster

•  Instrument cluster configuration procedure was not completed properly.

2	Electric power steering (EPS) warning light/master warning light does not turn off even though engine has started.^*1
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 malfunction ― Engine speed signal malfunction ― CAN wiring harness malfunction • EPS warning light/Master warning light circuit malfunction in the instrument cluster. • CAN wiring harness malfunction. ― Malfunction in wiring harness between EPS control module and instrument cluster • Instrument cluster configuration procedure was not completed properly.

*1 :Without multi-information display

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.
(See DTC INSPECTION [ELECTRIC POWER STEERING (EPS)].)

•  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 EPS warning light/master warning light at instrument cluster using the “WL+IL” of the M-MDS active command modes function.
(See ACTIVE COMMAND MODES INSPECTION [INSTRUMENT CLUSTER].)

•  Does the EPS warning light/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.)

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. (See DTC INSPECTION [ELECTRIC POWER STEERING (EPS)].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [ELECTRIC POWER STEERING (EPS)].)
1		No	Go to the next step.
2	• Turn off the EPS warning light/master warning light at instrument cluster using the “WL+IL” of the M-MDS active command modes function. (See ACTIVE COMMAND MODES INSPECTION [INSTRUMENT CLUSTER].) • Does the EPS warning light/master warning light turn off?	Yes	EPS control module malfunction. Replace the EPS control module. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)
2		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.)