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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (On-Board Diagnostics - A/T) >> DTC P1784-00: Hi Cut Valve Stuck Off/R-3-5 Cut Valve Stuck On >> 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 RELATED REPAIR INFORMATION AVAILABILITY 
  • Verify related Service Bulletins and/or on-line repair information availability.
  • Is any related repair information available?
Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
2 INSPECT ATF LEVEL 
Yes Adjust the ATF level to the specification, then go to the next step.
(See AUTOMATIC TRANSAXLE FLUID (ATF) ADJUSTMENT [FW6A-EL, FW6AX-EL] .)
No Replace the automatic transaxle.
(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [FW6A-EL] .)
(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [FW6AX-EL] .)
3 PERFORM STALL TEST TO VERIFY DTCs 
Yes Replace the automatic transaxle.
(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [FW6A-EL] .)
(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [FW6AX-EL] .)
No Go to the next step.
4 PERFORM ON-BOARD DIAGNOSTIC TEST 
Yes Replace the automatic transaxle.
(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [FW6A-EL] .)
(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [FW6AX-EL] .)
No Drive the vehicle for 10 min or more  .
DTCs are displayed:

No DTCs are displayed:
  • DTC troubleshooting completed.