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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 154 (On-Board Diagnostic - Forward Sensing Camera) >> DTC U0420-68; Error Signal Received From Electric Power Steering (EPS) Control Module >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY ELECTRIC POWER STEERING (EPS) CONTROL MODULE DTCs Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS .)
No Go to the next step.
2 VERIFY IF MALFUNCTIONING LOCATION IS ELECTRIC POWER STEERING (EPS) CONTROL MODULE DEPENDING ON REPEATABILITY Yes Replace the electric power steering (EPS) control module, then go to the next step.
(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
No Go to Step 4.
3 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Replace the forward sensing camera (FSC), then go to the next step. (See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION .)
No Go to the next step.
4 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [FORWARD SENSING CAMERA (FSC)] .)
No DTC troubleshooting completed.