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― Shift solenoid No.1 (SS1), Shift solenoid No.2 (SS2)― Transaxle range (TR) switch― Brake switch― TCC solenoid― Vehicle speedometer sensor (VSS)― Throttle position (TP) sensor― Turbine shaft speed (TSS) sensor― Electrical pressure control (EPC) solenoid― 3-2 timing/coasting clutch solenoid (3-2T/CCS)
Yes
Run OBD tests
Perform DTC troubleshooting
No
Go to the next step
3
Vehicle speed input
• Is the vehicle speedometer sensor drive gear damaged?
Yes
Service if necessary
No
Go to the next step
4
Control valve body
• Do any of the following malfunctions exist?
-
― Bolts are not tightened to the specification― Gaskets are damaged― 3-2 timing valve, 2-4 accumulator valve, servo release shuttle valve, 3-2 control valve are stuck, damaged, or misassembled― Solenoid screen is blocked― Separator plates are damaged or blocked― Pressure tap plate/gasket are damaged― Shift solenoid No.1 (SS1), Shift solenoid No.2 (SS2), or 3-2 timing/coasting clutch solenoid (3-2T/CCS) are stuck or damaged
Yes
Service if necessary
No
Refer to the appropriate shift for further diagnosis
5
• 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.
-