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Home >> Mazda >> 2021 >> CX-5 Sport, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (On-Board Diagnostic - Automatic Transaxle (GW6A-El, GW6AX-El)) >> DTC P1738-00: Automatic Transaxle Internal Malfunction >> Diagnostic procedure

Diagnostic procedure

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DTC P1738:00 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY DTC OUTPUT STATUS
  • Are any the following DTCs displayed?
    • P0729:00, P0731:00, P0732:00, P0733:00, P0734:00, P0735:00, P0736:00
Yes Replace the automatic transaxle.
(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [GW6A-EL (VIN Y)] .)
(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [GW6AX-EL (VIN Y)] .)
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 [GW6A-EL, GW6AX-EL] .)
No Go to Step 5.
3 PERFORM ON-BOARD DIAGNOSTIC TEST TO SPECIFY MALFUNCTIONING PART Yes DTC P1738:00 is displayed:

DTC other than P1738:00 is displayed:
No Go to the next step.
4 DRIVE VEHICLE AND VERIFY DTCs Yes DTC P1738:00 is displayed:

DTC other than P1738:00 is displayed:
No No DTCs are displayed:
  • DTC troubleshooting completed.
5 PERFORM ON-BOARD DIAGNOSTIC TEST Yes DTC P1738:00 is displayed:

DTC other than P1738:00 is displayed:
No Go to the next step.
6 DRIVE VEHICLE AND VERIFY DTCs Yes DTC P1738:00 is displayed:

DTC other than P1738:00 is displayed:
No Replace the control valve body.
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [GW6A-EL, GW6AX-EL] .)