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Home >> Mazda >> 2006 >> 6 s, 4D Wagon, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (On-Board Diagnostic [Multiplex Communication System - L3 With TC)) >> DTC U0073, U2516 [L3 With TC] >> Diagnostic procedure

Diagnostic procedure

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DTC U0073, U2516 [L3 WITH TC] DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT CAN SYSTEM-RELATED DTC 
  • Are any DTCs other than the following displayed?
    • U0073
    • U2516
 Yes Determine malfunctioning part in CAN system.
(See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [L3 WITH TC] )
No Go to the next step.
2 INSPECT CONNECTOR 
  • Inspect the connector of the module that outputs the DTC.
  • Is it normal?
 Yes Go to the next step.
No Repair or replace the connector, then go to Step 4.
3 INSPECT WIRING HARNESSES 
  • Inspect for the following malfunctioning wiring harnesses:
    • Short to GND
    • Short to power supply
    • Twisted pair short each other
    • Open circuit
  • Is there any malfunction?
 Yes Replace the wiring harness, then go to the next step.
No Go to the next step.
4 VERIFY TROUBLESHOOTING COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC using the WDS or equivalent.
  • Start the engine.
  • Is the same DTC present?
 Yes Replace the module that outputs the DTC, then retry this step.
No Troubleshooting completed.
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