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Home >> Mazda >> 2021 >> CX-30 Turbo Premium >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (On-Board Diagnostic - Electric Power Steering (EPS) System) >> DTC C200B-17, C200B-1C, C200B-29, C200B-62, C200B-64, C200B-83, C200C-17, C200C-1C, C200C-29, C200C-62, C200C-64 Or C200C-83: Steering Shaft Torque Sensor (Electric Power Steering (EPS)) >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC C200B:17 OR C200C:83 (ELECTRIC POWER STEERING (EPS)) DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 INSPECT TORQUE SENSOR CONNECTOR AND WIRING HARNESS
 Yes Go to the next step.
No Replace the steering column and perform the repair completion verification.
(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION (US) .)
2 INSPECT TORQUE SENSOR
  • Using the M-MDS, perform the PID inspection for the EPS control module. (See PID/DATA MONITOR INSPECTION .) (See PID/DATA MONITOR TABLE (ELECTRIC POWER STEERING (EPS) (US)) .)
    • STR_TRQ_MAIN_1
    • STR_TRQ_MAIN_2
    • STR_TRQ_SUB_1
    • STR_TRQ_SUB_2
  • Do the PIDs indicate as followings?
    • STR_TRQ_MAIN_1 and STR_TRQ_MAIN_2
  • Steered left: Changes to 0-positive
    • Steered right: Changes to 0-negative
    • STR_TRQ_SUB_1 and STR_TRQ_SUB_2
  • Steered left: Changes to 0-negative
  • Steered right: Changes to 0-positive
 Yes Go to the next step.
No Replace the steering column and perform the repair completion verification.
(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION (US) .)
Repair completion verification 1 VERIFY DTC TROUBLESHOOTING COMPLETED
  • Using the M-MDS, clear the DTC from the EPS control module. (See CLEARING DTC .)
  • Using the M-MDS, perform the EPS control module DTC inspection. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .)
If the CAN communication is normal, perform the diagnosis from Step 1.

Go to the next step.
No Go to the next step.
Repair completion verification 2 VERIFY NO DTC IS PRESENT
  • Are any DTCs present?
 Yes Go to applicable DTC inspection.
(See DTC TABLE (ELECTRIC POWER STEERING (EPS) (US)) .)
No DTC troubleshooting completed.
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