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― Turbine shaft speed (TSS) sensor― Throttle position (TP) sensor― Vehicle speedometer sensor (VSS)― Mass air flow (MAF) sensor― TCC solenoid― Transaxle range (TR) switch― 3-2 timing/coasting clutch solenoid (3-2T/CCS)
Yes
Perform OBD Tests
Perform DTC troubleshooting
No
Go to the next step
3
Joint shafts
• Do any of the following malfunctions exist?
-
― Damage― Loose parts― Splines damaged
Yes
Service if necessary
No
Go to the next step
4
Engine mounts
• Do any of the following malfunctions exist?
-
― Damage― Loose parts― Missing
Yes
Service if necessary
No
Go to the next step
5
Improper pressure
• Is the line pressure high?
Yes
Inspect the line pressure
Service if necessary
If the pressures are normal and a specific shift position is harsh, refer to the following chart:
No
Go to the next step
6
Control valve body
• Do any of the following malfunctions exist?
-
― Bolts are not tightened to the specification― Gaskets are damaged― Main regulator valve, by‐pass valve, line modulator valve are stuck, damaged, or misassembled springs are tangled, missing, or damaged― Electrical pressure control (EPC) solenoid is stuck or damaged― Hydraulic passages are damaged― Separator plate is damaged or blocked
Yes
Service if necessary
No
Go to the next step
7
Torque converter component
• TCC applied during shifts
• Do any of the following malfunctions exist?
-
― Piston is damaged― Pump support seal #1 (CBY) is leaking, missing or damaged― Case leakage― Converter component is damaged
Yes
Service if necessary
If heat scorched, replace the converter
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.
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• 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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