LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (On-Board Diagnostics [Dynamic Stability Control]) >> DTC U0402-00: Abnormal Message From Transmission/Transaxle >> Diagnostic procedure

Diagnostic procedure

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
STEP INSPECTION ACTION
1 VERIFY DTCs FOR TCM  Yes Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL, FW6AX-EL] .)
No Go to the next step.
2 VERIFY THAT THE SAME DTC IS NOT PRESENT  Yes Repeat the inspection from Step 1.
If the malfunction recurs, replace the TCM, then go to the next step.
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6A-EL, FW6AX-EL] .)
No Go to the next step.
3 VERIFY IF OTHER DTCs DISPLAYED 
  • Are any other DTCs displayed?
Yes Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .)
No DTC troubleshooting completed.