LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2025 >> CX-5 S Select >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> On-Board Diagnostic - Instrument Cluster >> DTC U0402:68 Error Signal Received From TCM >> Diagnostic Procedure

Diagnostic Procedure

DTC U0402:68 (INSTRUMENT CLUSTER) DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY TCM DTCs  Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (GW6A-EL, GW6AX-EL)] .)
No Go to the next step.
2 DRIVE VEHICLE THEN VERIFY DTCs FOR TCM AGAIN  Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (GW6A-EL, GW6AX-EL)] .)
No Go to the next step.
3 VERIFY THAT REPAIRS HAVE BEEN COMPLETED 
  • Clear the DTC for the instrument cluster using the M-MDS. (See CLEARING DTC .)
  • Switch the ignition ON (engine off or on) and wait for 20s or more.
  • Retrieve the instrument cluster DTCs using the M-MDS. (See DTC INSPECTION .)
  • Is the same DTC displayed?
Yes Replace the instrument cluster, then go to the next step.
(See INSTRUMENT CLUSTER 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 .)
No DTC troubleshooting completed.