NO.1 ELECTRIC POWER STEERING (EPS) WARNING LIGHT DOES NOT ILLUMINATE WITH IGNITION SWITCHED ON [ELECTRIC POWER STEERING (EPS)]
NO.1 ELECTRIC POWER STEERING (EPS) WARNING LIGHT DOES NOT ILLUMINATE WITH IGNITION SWITCHED ON [ELECTRIC POWER STEERING (EPS)]
SM2335526
id0603a2950600
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Troubleshooting item |
Electric power steering (EPS) warning light does not illuminate with ignition switched ON. |
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Possible cause
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• EPS warning light circuit malfunction in the instrument cluster.
• An error originates from the EPS control module, and the off signal is generated.
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Diagnostic Procedure
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Step |
Inspection |
Results |
Action |
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1
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VERIFY ELECTRIC POWER STEERING WARNING LIGHT ILLUMINATION CONDITION
• Ignition is switched ON (engine off)
• Is the EPS warning light illuminated?
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Yes
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Malfunction may be temporary.
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No
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Go to the next step.
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2
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VERIFY COMMUNICATION CONDITION BETWEEN EPS CONTROL MODULE AND BODY CONTROL MODULE (BCM)
• Using the M-MDS, display the following PIDs for the body control module (BCM). (See PID/DATA MONITOR INSPECTION.)
• Is the EPAS_NETWORK PID value Node Attached and Communicate correctly?
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Yes
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Perform the body control module (BCM) configuration, then repeat the inspection from Step 1.
If the malfunction recurs, replace the instrument cluster.
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No
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EPS control module malfunction. Replace the EPS control module.
Perform the repair completion verification.
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Repair completion verification
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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?
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Yes
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Complete the symptom troubleshooting.
Explain to the customer what has been repaired.
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No
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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.
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