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Home >> Mazda >> 2016 >> 6 Sport, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (On-Board Diagnostics - Automatic Transaxle) >> DTC P1738-00: Automatic Transaxle Internal Malfunction >> Diagnostic procedure

Diagnostic procedure

WARNING: This page is about a different variant/trim than selected.
STEP INSPECTION ACTION
1 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] .)
No Go to Step 4.
2 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.
3 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.
4 PERFORM ON-BOARD DIAGNOSTIC TEST 
Yes DTC P1738:00 is displayed:

DTC other than P1738:00 is displayed:
No Go to the next step.
5 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 [FW6A-EL] .)