STEP
INSPECTION
ACTION
1
ATF
• Are there any problems with the following?
-
― Level― Condition
Yes
Service if necessary
No
Go to the next step
2
Powertrain control system
• Are there any malfunctions with the following?
-
― Electrical input/output― Vehicle wiring harness― PCM― Electrical pressure control (EPC) solenoid― Transaxle fluid temperature (TFT) sensor― Throttle position (TP) sensor― Mass air flow (MAF) sensor
Yes
Run OBD Tests, Perform DTC troubleshooting
No
Go to the next step
3
Internal or external shift linkages
• Do any of the following malfunctions exist?
-
― Damage― Misadjustment― Misassembly
Yes
Service if necessary
No
Go to the next step
4
Improper pressure
• Is the line pressure low?
Yes
Inspect the line pressure
If the pressure is low or there is softness/slippage in all shift positions, go to step 6
If the pressure is normal and there is specific softness/slippage in a shift position, refer to the following chart:
No
Go to the next step
5
Control valve body
• Do any of the following malfunctions exist?
-
― Bolts are not tightened to the specification― Gaskets are damaged― Main regulator valve, line modulator valve are stuck, damaged, or misassembled, or springs are missing, tangled or damaged― Electrical pressure control (EPC) solenoid is stuck or damaged― Separator plates are damaged or blocked― Pressure tap plate/gasket are damaged, or missing
Yes
Service if necessary
No
Go to the next step
6
Oil pump
• Do any of the following malfunctions exist?
-
― Bolts are not tightened to the specification― Gaskets are damaged― Porosity/cross leakage
Yes
Service if necessary
No
Go to the next step
7
Oil filter and seal component
• Do any of the following malfunctions exist?
-
― Filter/seal is damaged, plugged, or missing― Recirculating seal is damaged or out of position
Yes
Service if necessary
No
The problem is not in the automatic transaxle
Go to the engine symptom troubleshooting
8
• Verify the test results.
-
― If normal, return to the diagnostic index to service any additional symptoms.― If the malfunction remains, inspect the related Service Information and perform repair or diagnosis.
-
• If the vehicle is repaired, troubleshooting is completed.• If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM.
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