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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 468 (Symptom Troubleshooting [Electronic Power Steering System]) >> No.1 Electric Power Steering (EPS) Warning Light Does Not Illuminate With Ignition Switch At On >> Diagnostic procedure

Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
NO 1 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT PID/DATA IN EPS CONTROL MODULE 
  • Select the following items using the WDS or equivalent Datalogger function.
    • EPSLAMP (EPS warning light)
  • Is the EPSLAMP ON while the ignition switch is turned to the ON position?
 Yes EPS warning light circuit malfunction in the instrument cluster. Inspect the instrument cluster.
(See INSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODE .)
No EPS control module malfunction. Replace the EPS control module.
(See EPS CONTROL MODULE REMOVAL/INSTALLATION .)
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