Continuosly Variable Transaxle (Diagnostics - Introduction) (K313): Other Toyota Corolla XI

PRECAUTION [08/2013 - ]

1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected: System See Procedure Air Conditioning System (for Automatic Air Conditioning System) Refer to «INITIALIZATION [08/2013 - ]»(ref-635429-S20696467122014070300000)
2. IGNITION SWITCH EXPRESSION HINT: The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this article. Expression Ignition Switch (Position) Engine Switch (Condition) Ignition Switch off Off Off (Lock) Ignition Switch ON ON On (IG) Ignition Switch ACC ACC On (ACC) Engine Start START On (Start)
3. PRECAUTION NOTE: Perform Reset Memory when replacing the Continuously Variable Transaxle (CVT) assembly or ECM. Performing Reset Memory will clear the learned value of the yaw rate and acceleration sensor (deceleration sensor zero point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform Reset Memory, yaw rate and acceleration sensor zero point calibration, and CVT oil pressure calibration when replacing any of the parts shown in the following table. Refer to «INITIALIZATION [08/2013 - ]»(ref-635452-S12546523352014070300000) Replaced Part Continuously variable transaxle assembly ECM Oil pressure sensor Airbag sensor assembly (Yaw rate and acceleration sensor)
4. HANDLING PRECAUTIONS WARNING: When using compressed air, always aim away from yourself to prevent CVT fluid from spraying on your face. NOTE: Before removing components from the transaxle, clean off any sand, dirt or other foreign matter present on the exterior of the transaxle. Make sure that foreign matter does not contaminate the inside of the transaxle when parts are removed or installed, or during disassembly and reassembly of the transaxle. When disassembling light alloy parts such as the case, do not pry them with a screwdriver or similar tool. Instead, tap the parts with a plastic hammer to separate them. Do not wear cloth gloves or use cloth to handle parts during removal, disassembly, or installation of the transaxle. Instead, wear synthetic gloves to prevent cloth fiber from entering the transaxle. Removed parts should be arranged in order and care should be taken to prevent dust contamination. Apply Toyota Genuine CVT Fluid FE to all sliding surfaces and rotating parts. Before installing O-rings and oil seal rings, coat them with Toyota Genuine CVT Fluid FE and be sure to not damage them. Be careful to not damage the mating surfaces of components, because damage to these surfaces can cause oil leaks. Before applying sealant, remove all of the old sealant and thoroughly clean the surfaces with non-residue solvent. Use of Toyota Genuine CVT Fluid FE is recommended. Do not subject parts such as sensors to any impacts. Replace parts with new ones if they are dropped or subjected to a severe blow.

DEFINITION OF TERMS [08/2013 - ]

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CAUTION / NOTICE / HINT

HINT

1. The ECM of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, be sure to check that there are no malfunctions in the CAN communication system.
2. *: Use the Techstream.

PROCEDURE

1. VEHICLE BROUGHT TO WORKSHOP Result Proceed to NEXT Result: 1 NEXT See step 2
2. CUSTOMER PROBLEM ANALYSIS Refer to How to Troubleshoot ECU Controlled Systems in Introduction. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014]»(ref-635429-S08037721622014070300000) Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [04/2014 - ]»(ref-635429-S26261876542014070300000) Result Proceed to NEXT Result: 1 NEXT See step 3
3. INSPECT BATTERY VOLTAGE Standard Voltage 11 to 14 V HINT: If the voltage is below 11 V, recharge or replace the battery before proceeding. Result Proceed to NEXT Result: 1 NEXT See step 4
4. CHECK CAN COMMUNICATION SYSTEM* Use the Techstream to check if the CAN communication system is functioning normally. CAN Bus Check HINT: Refer to CAN Bus Check for the CAN communication system. Refer to «DIAGNOSIS SYSTEM [08/2013 - 04/2014]»(ref-635647-S40458511452014070300000) and «DIAGNOSIS SYSTEM [04/2014 - ]»(ref-635652-S02842089492014070300000) The ECM is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there are no malfunctions in the CAN communications system. Result Result Proceed to CAN communication DTCs are not output. A CAN communication DTCs are output. B Result: 2 B GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]»(ref-635647-S27781195552014070300000) Result: 1 A See step 5
5. CHECK AND CLEAR DTCS AND FREEZE FRAME DATA* Refer to DTC Check/Clear. Refer to «DTC CHECK / CLEAR [08/2013 - ]»(ref-635452-S09179021232014070300000) Result Proceed to NEXT Result: 1 NEXT See step 6
6. SETTING CHECK MODE DIAGNOSIS* Refer to Check Mode Procedure. Refer to «CHECK MODE PROCEDURE [08/2013 - ]»(ref-635452-S28224195532014070300000) Result Proceed to NEXT Result: 1 NEXT See step 7
7. CHECK FOR DTC* Proceed to DTC Check/Clear. Refer to «DTC CHECK / CLEAR [08/2013 - ]»(ref-635452-S09179021232014070300000) Powertrain > Engine and ECT > Trouble Codes Result Result Proceed to DTCs are not output. A DTCs are output. B Result: 2 B See step 14 Result: 1 A See step 8
8. BASIC INSPECTION Refer to Continuously Variable Transaxle Fluid. Refer to «ADJUSTMENT [08/2013 - ]»(ref-635611-S26680085852014070300000) Refer to Park/neutral Position Switch. Refer to «ON-VEHICLE INSPECTION [08/2013 - ]»(ref-635611-S19406798332014070300000) Refer to Shift Lever. Refer to «ON-VEHICLE INSPECTION [08/2013 - ]»(ref-635611-S08269142332014070300000) Result Proceed to OK NG Result: 2 NG See step 11 Result: 1 OK See step 9
9. PROBLEM SYMPTOMS CONFIRMATION Refer to Road Test. Refer to «ROAD TEST [08/2013 - ]»(ref-635452-S10507342822014070300000) Refer to Mechanical System Tests. Refer to «MECHANICAL SYSTEM TESTS [08/2013 - ]»(ref-635452-S03056744102014070300000) Refer to Hydraulic Test. Refer to «HYDRAULIC TEST [08/2013 - ]»(ref-635452-S39879748722014070300000) Result Result Proceed to Symptom does not occur A Symptom occurs B Result: 2 B See step 11 Result: 1 A See step 10
10. SYMPTOM SIMULATION Refer to Symptom Simulation. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014]»(ref-635429-S08037721622014070300000) and «HOW TO PROCEED WITH TROUBLESHOOTING [04/2014 - ]»(ref-635429-S26261876542014070300000) Result Proceed to NEXT Result: 1 NEXT See step 11
11. COMPONENT INSPECTION Result Proceed to NEXT Result: 1 NEXT See step 12
12. REPAIR OR REPLACEMENT Result Proceed to NEXT Result: 1 NEXT See step 13
13. CONFIRMATION TEST Result Proceed to NEXT Result: 1 NEXT END
14. DIAGNOSTIC TROUBLE CODE CHART Proceed to Diagnostic Trouble Code Chart. Refer to «DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ]»(ref-635452-S08136261832014070300000) Result Proceed to NEXT Result: 1 NEXT See step 15
15. CIRCUIT INSPECTION* Result Proceed to NEXT Result: 1 NEXT See step 16
16. IDENTIFICATION OF PROBLEM Result Proceed to NEXT Result: 1 NEXT See step 17
17. REPAIR OR REPLACEMENT Result Proceed to NEXT Result: 1 NEXT See step 18
18. CONFIRMATION TEST Result Proceed to NEXT Result: 1 NEXT END

CHECK FOR INTERMITTENT PROBLEMS [08/2013 - ]

HINT

Inspect the ECM using check mode. Intermittent problems are easier to detect with the Techstream when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.

1. Clear the DTCs. Refer to «DTC CHECK / CLEAR [08/2013 - ]»(ref-635452-S09179021232014070300000)
2. Switch the ECM from normal mode to check mode using the Techstream. Refer to «CHECK MODE PROCEDURE [08/2013 - ]»(ref-635452-S28224195532014070300000)
3. Perform a simulation test. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - 04/2014]»(ref-635429-S08037721622014070300000) and «HOW TO PROCEED WITH TROUBLESHOOTING [04/2014 - ]»(ref-635429-S26261876542014070300000)
4. Check and wiggle the harnesses, connectors and terminals. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [08/2013 - ]»(ref-635429-S33489855532014070300000)

MECHANICAL SYSTEM TESTS [08/2013 - ]

1. SHIFT TIME LAG TEST NOTE: This test must be conducted after checking and confirming that the engine is operating normally. Perform this test while the CVT fluid temperature is between 50 and 100°C (122 and 212°F). Perform this test with the A/C off. HINT: When the shift lever is moved while the engine is idling, there will be a certain time lapse or lag before the shock can be felt. This is used for checking the condition of the clutches and brakes. Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List. Powertrain > Engine and ECT > Data List Tester Display A/T Oil Temperature 1 Drive the vehicle until the CVT fluid temperature has reached 50 to 100°C (122 to 212°F). Allow the engine to idle with the air conditioning off. Apply the parking brake and keep the brake pedal depressed firmly. Check the D position time lag. Move the shift lever to N and wait for 1 minute. Move the shift lever to D and measure the time until the shock is felt. Repeat the 2 steps above 3 times, and calculate the average time of the 3 tests. Standard Value D position time lag is less than 1.2 seconds. Check the R position time lag. Move the shift lever to N and wait for 1 minute. Move the shift lever to R and measure the time until the shock is felt. Repeat the 2 steps above 3 times, and calculate the average time of the 3 tests. Standard Value R position time lag is less than 1.5 seconds.
2. STALL SPEED TEST WARNING: The stall speed test should always be performed with at least 2 people. One person should observe the condition of the wheels and wheel chocks while the other is performing the test. To ensure safety, perform this test in an open and level area that provides good traction. NOTE: The stall speed test should be done on a paved surface (a surface that is not slippery). Do not perform the stall speed test for more than 5 seconds. HINT: This test is to check the overall performance of the engine. Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List. Powertrain > Engine and ECT > Data List Tester Display A/T Oil Temperature 1 Drive the vehicle until the CVT fluid temperature has reached 50 to 100°C (122 to 212°F). Allow the engine to idle with the air conditioning off. Chock all 4 wheels. Enter the following menus: Powertrain / Engine and ECT / Active Test / Connect the TC and TE1. Powertrain > Engine and ECT > Active Test Tester Display Connect the TC and TE1 Apply the parking brake and keep the brake pedal firmly depressed with your left foot. Move the shift lever to D. Depress the accelerator pedal all the way down with your right foot. Read the engine speed (stall speed) and release the accelerator pedal immediately. Standard Value Engine Stall Speed 2ZR-FE 2350 +/- 300 RPM 2ZR-FAE 2350 +/- 300 RPM

INITIALIZATION [08/2013 - ]

Note. Performing Reset Memory will clear the learned value of the yaw rate and acceleration sensor (deceleration sensor zero point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform Reset Memory, yaw rate and acceleration sensor zero point calibration, and CVT oil pressure calibration when replacing any of the parts shown in the following table. Replaced Part Continuously variable transaxle assembly ECM Oil pressure sensor Airbag sensor assembly (Yaw rate and acceleration sensor) After performing Reset Memory, always perform yaw rate and acceleration sensor (deceleration sensor zero point) calibration first, and then CVT oil pressure calibration.

1. RESET MEMORY/CALIBRATION Perform Reset Memory as follows: Turn the ignition switch off. Move the shift lever to P and apply the parking brake. Connect the Techstream to the DLC3. Turn the ignition switch to ON. NOTE: Do not start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / Reset Memory. NOTE: Keep the vehicle stopped, level and stable during the calibration. Make sure that the shift lever is in P. Make sure that the engine is stopped. To prevent idling vibrations, do not start the engine. Make sure that the ignition switch is ON. Powertrain > Engine and ECT > Utility Tester Display Reset Memory Perform deceleration sensor zero point calibration as follows: Turn the ignition switch to ON and wait at least 2 seconds. Enter the following menus: Powertrain / Engine and ECT / Utility / Deceleration Sensor Zero Point Calibration. HINT: When "Complete" is displayed on the screen, deceleration sensor zero point calibration is complete. If "Error" is displayed on the screen and DTC P1589 is output (for the detection conditions for DTC P1589), refer to P1589, the deceleration sensor circuit may be malfunctioning. Refer to «DTC P1589: Acceleration Sensor Learning Value [08/2013 - ]»(ref-635606-S04956216672014070300000) Shaking or vibrating the vehicle during deceleration sensor zero point calibration may cancel calibration. If "Error" is displayed on the screen and DTC P1589 is not output, perform calibration again. Powertrain > Engine and ECT > Utility Tester Display Deceleration Sensor Zero Point Calibration Perform CVT oil pressure calibration as follows: Turn the ignition switch off and wait at least 30 seconds. Turn the ignition switch to ON and wait at least 2 seconds. NOTE: Do not start the engine. HINT: CVT oil pressure calibration is performed with the ignition switch ON (engine stopped). However, the calibration cannot be performed under the following conditions: Oil pressure sensor value is 0.065 MPa (0.663 kgf/cm 2 , 9.43 psi) or more. CVT oil temperature is 0°C (32°F) or less or 120°C (248°F) or more. Start the engine and wait at least 5 seconds. Enter the following menus: Powertrain / Engine and ECT / Utility / CVT Oil Pressure Calibration. HINT: During CVT oil pressure calibration, the engine idle speed will increase. When "Complete" is displayed on the screen, CVT oil pressure calibration is complete. The learned values cannot be cleared by only disconnecting and reconnecting the cable to the negative (-) battery terminal. Powertrain > Engine and ECT > Utility Tester Display CVT Oil Pressure Calibration

FAIL-SAFE CHART [08/2013 - ]

1. Description This function minimizes the loss of the Continuously Variable Transaxle (CVT) system functions when a malfunction occurs in a sensor or solenoid valve.
2. Fail-safe Fail-safe control list: Malfunctioning Part Function Transmission revolution sensor (NT) The oil pressure of the primary pulley and secondary pulley is set to a specified value. The opening angle of the throttle valve is limited to reduce input torque. Transmission revolution sensor (NOUT) Transmission revolution sensor (NIN) Shift solenoid valve SL The ECM stops sending current to the shift solenoid valve SL, and forward and reverse clutch control is performed mechanically. Lock-up clutch control is canceled. Shift solenoid valve SC The ECM stops sending current to the shift solenoid valve SC, and forward and reverse clutch control is performed mechanically. Lock-up clutch control is canceled. Shift solenoid valve SLU The ECM stops sending current to the shift solenoid valve SLU, and forward and reverse clutch control is performed mechanically. Lock-up clutch control is canceled. Shift solenoid valve SLP The gear ratio is limited to a specified range. Shift solenoid valve SLS The gear ratio is set to a specified value. The lock-up range is limited to a particular range. CVT fluid temperature sensor The ECM sets the fluid temperature to a predetermined value to perform normal control. Airbag sensor assembly (yaw rate and acceleration sensor) G AI-shift control is disabled when a malfunction is detected.