TRANSAXLE OVERHEATS [GW6A-EL, GW6AX-EL]

id050320102600

TROUBLESHOOTING ITEM

Transaxle overheats
DESCRIPTION
•  Burnt smell emitted from the transaxle.
•  Smoke is emitted from the transaxle.
POSSIBLE CAUSE
1.  Signal malfunction
?  APP sensor malfunction
?  Brake switch malfunction
?  CKP sensor malfunction
?  ECT sensor No.1 malfunction
2.  ATF malfunction
3.  Oil cooler malfunction
4.  Control valve body malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT SIGNAL PARTS FOR MALFUNCTION
•  Inspect the value at the following PCM PIDs using the M-MDS.
?  APP (APP sensor)
?  BOO (Brake switch)
?  ECT (ECT sensor No.1)
?  RPM (CKP sensor)
•  Is there any malfunction?
Yes
Repair or replace any malfunctioning parts according to the inspection result.
No
Go to the next step.
2
INSPECT ATF LEVEL
•  Inspect the ATF level.
•  Is there any malfunction?
Yes
Adjust the ATF level to the specification.
(See AUTOMATIC TRANSAXLE FLUID (ATF) ADJUSTMENT [GW6A-EL, GW6AX-EL].)
No
Go to the next step.
3
VISUALLY INSPECT OIL COOLER
•  Visually inspect the oil cooler.
•  Is there any malfunction?
Yes
Repair or replace any malfunctioning parts according to the inspection result.
(See OIL COOLER REMOVAL/INSTALLATION [GW6A-EL, GW6AX-EL].)
No
Go to the next step.
4
VERIFY IF MALFUNCTION CAUSE IS CONTROL VALVE BODY
•  Inspect the value at the following TCM PIDs using the M-MDS.
?  ECU_A
?  ECU_B
?  ECU_C
?  GEAR_SEL
?  LINEDES
?  OP_SW1
?  OP_SW2
?  OP_SW3
?  OP_SW4
?  OSS
?  SS1
?  SS2
?  SS3
?  SS4
?  SSLU
?  SSLU_PRES
?  SSP
?  SSP_PRES
?  TR
?  TSS
?  VSS
•  Is there any malfunction?
Yes
Replace the control valve body, then go to the next step.
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [GW6A-EL, GW6AX-EL].)
No
Symptom troubleshooting is completed.