U241E Automatic Transaxle: Diagnosis Scion tC I рестайлинг

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. The ECM of this system is connected to the CAN and multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN and multiplex communication systems.
2. The intelligent tester can be used at steps 3 , 4 , 6 , and 9 .

1. Vehicle Brought to Workshop
2. Customer Problem Analysis
3. Connect the intelligent tester to DLC3
4. Check and Clear DTCs and Freeze Frame Data HINT: (See «DTC CHECK / CLEAR»(ref-296232-S25182406592008082200000) ).
5. Visual Inspection
6. Setting the Check Mode Diagnosis HINT: (See «CHECK MODE PROCEDURE»(ref-296232-S17853136772008082200000) ).
7. Problem Symptom Confirmation HINT: (See «ROAD TEST»(ref-296232-S42928548652008082200000) ). Symptom does not occur: Go to step 8 Symptom occurs: Go to step 9
8. Symptom Simulation HINT: (See «HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS»(ref-296226-S28784982622008082200000) ).
9. DTC Check HINT: (See «DTC CHECK / CLEAR»(ref-296232-S25182406592008082200000) ). DTC is not output: Go to step 10 DTC is output: Go to step 17
10. Basic Inspection HINT: (See «ON-VEHICLE INSPECTION»(ref-296232-S35825402792008082200000) , «INSPECTION»(ref-296232-S23598924292008082200000) and «ADJUSTMENT»(ref-296232-S41256231482008082200000) ). NG: Go to step 19 OK: Go to next step.
11. Mechanical System Test HINT: (See «MECHANICAL SYSTEM TESTS»(ref-296232-S08532261852008082200000) ). NG: Go to step 16 OK: Go to next step.
12. Hydraulic Test HINT: (See «HYDRAULIC TEST»(ref-296232-S10547724202008082200000) ). NG: Go to step 16 OK: Go to next step.
13. Manual Shifting Test HINT: (See «MANUAL SHIFTING TEST»(ref-296232-S01939815282008082200000) ). NG: Go to step 15 OK: Go to next step.
14. Problem Symptoms Table Chapter 1 HINT: (See «PROBLEM SYMPTOMS TABLE»(ref-296232-S13525912912008082200000) ). NG: Go to step 18 OK: Go to next step.
15. Problem Symptoms Table Chapter 2 HINT: (See «PROBLEM SYMPTOMS TABLE»(ref-296232-S13525912912008082200000) ).
16. Part Inspection Go to step 19
17. DTC Chart HINT: (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-296232-S12241543022008082200000) ).
18. Circuit Inspection
19. Repair or Replace
20. Confirmation Test NEXT: End

ROAD TEST

1. PROBLEM SYMPTOM CONFIRMATION Based on the result of the customer problem analysis, try to reproduce the symptoms. If the problem is that the transaxle does not shift up, shift down, or the shift point is too high or too low, conduct the following road test referring to the automatic shift schedule and simulate the problem symptoms.
2. ROAD TEST NOTE: Perform the test at the ATF (Automatic Transmission Fluid) temperature 50 to 80°C (122 to 176°F) in the normal operation. D position test: Shift into the D position and fully depress the accelerator pedal and check the following points. Check up-shift operation. Check that 1 --> 2, 2 --> 3 and 3 --> 4th(O/D) upshifts take place, and that the shift points conform to the automatic shift schedule (See «U241E AUTOMATIC TRANSAXLE»(ref-296228-S21068951972008082200000) ). HINT: 4th(O/D) Gear Up-shift Prohibition Control Engine coolant temperature is 55°C (131°F) or less and vehicle speed is at 70 km/h (43 mph) or less. ATF temperature is 5°C (41°F) or less. Lock-up Prohibition Control Brake pedal is depressed. Accelerator pedal is released. Engine coolant temperature is 60°C (140°F) or less. 3rd Gear Lock-up Prohibit Control There is no 3rd gear lock-up function in the 4 position. Check for shift shock and slip. Check for shock and slip at the 1 --> 2, 2 --> 3 and 3 --> 4th (O/D) up-shifts. Check for abnormal noise and vibration. Check for abnormal noise and vibration when up-shifting from 1 --> 2, 2 --> 3 and 3 --> 4th(O/D) while driving with the shift lever in the D position, and check while driving in the lock-up condition. HINT: The check for the cause of abnormal noise and vibration must be done thoroughly as it could also be due to loss of balance in the differential, torque converter clutch, etc. Check kick-down operation. Check vehicle speeds when the 2nd to 1st, 3rd to 2nd and 4th(O/D) to 3rd kick-downs take place while driving with the shift lever in the D position. Confirm that each speed is within the applicable vehicle speed range indicated in the automatic shift schedule (See «U241E AUTOMATIC TRANSAXLE»(ref-296228-S21068951972008082200000) ). Check abnormal shock and slip at kick-down. Check the lock-up mechanism. Drive in D position (4th(O/D) gear), at a steady speed (lock-up ON). Lightly depress the accelerator pedal and check that the engine speed does not change abruptly. HINT: There is no lock-up function in the 1st and 2nd gear. If there is a big jump in engine speed, there is no lock-up. 2 position test: Shift into the 2 position and fully depress the accelerator pedal and check the following points. Check up-shift operation. Check that the 1 --> 2 up-shift takes place and that the shift point conforms to the automatic shift schedule (See «U241E AUTOMATIC TRANSAXLE»(ref-296228-S21068951972008082200000) ). HINT: There is no 3rd up-shift and lock-up in the 2 position. Check engine braking. While running in the 2 position and 2nd gear, release the accelerator pedal and check the engine braking effect. Check for abnormal noise during acceleration and deceleration, and for shock at up-shift and down-shift. L position test: Shift into the L position and fully depress the accelerator pedal and check the following points. Check no up-shift. While running in the L position, check that there is no up-shift to 2nd gear. HINT: There is no lock-up in the L position. Check engine braking. While running in the L position, release the accelerator pedal and check the engine braking effect. Check for abnormal noise during acceleration and deceleration. R position test: Shift into the R position, lightly depress the accelerator pedal, and check that the vehicle moves backward without any abnormal noise or vibration. CAUTION: Before conducting this test ensure that the test area is free from people and obstruction. P position test: Stop the vehicle on the grade (more than 5°) and after shifting into the P position, release the parking brake. Then, check that the parking lock pawl holds the vehicle in place.

PROBLEM SYMPTOMS TABLE

HINT

1. If a normal code is displayed during the diagnostic trouble code check although the trouble still occurs, check the electrical circuits for each symptom in the order given in the charts on the following pages and proceed to the page given for troubleshooting.
2. The Matrix Chart is divided into 2 chapters.
3. When the circuit on which mark *1 is attached is a malfunction, DTC could be output.

Chapter 1

Refer to the table below when the trouble cause is considered to be electrical the instruction "Proceed to next circuit inspection shown on matrix chart" is given in the flow chart of each circuit, proceed to the circuit with the next highest number in the table to continue the check. If the trouble still occurs even though there are no abnormalities in any of the other circuits, check and replace the ECM.

1. Chapter 1: Electronic Circuit Matrix Chart ELECTRONIC CIRCUIT MATRIX CHART Symptom Suspected Area See No up-shift (1st -> 2nd) ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) No up-shift (2nd -> 3rd) ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) No up-shift (3rd -> 4th) 1. Park/neutral position switch circuit *1 «DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT)»(ref-296232-S41959078732008082200000) 2. ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) No down-shift (4th -> 3rd) ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) No down-shift (3rd -> 2nd) ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) No down-shift (2nd -> 1st) ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) No lock-up or No lock-up off ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) Shift point too high or too low ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) Up-shift to 4th from 3rd while shift lever is 3 position 1. Park/neutral position switch circuit *1 «DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT)»(ref-296232-S41959078732008082200000) 2. ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) Up-shift to 4th from 3rd while engine is cold 1. Engine coolant temp, sensor circuit *1 «DIAGNOSTIC TROUBLE CODE CHART»(ref-296240-S07560238692008082200000) 2. ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) Harsh engagement (N -> D) ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) Harsh engagement (Lock-up) ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) Harsh engagement (Any driving position) ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) Poor acceleration ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) Engine stalls when starting off or stopping ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000) Malfunction in shifting 1. Park/neutral position switch circuit *1 «DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT)»(ref-296232-S41959078732008082200000) 2. ECM «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-296226-S38529235172008082200000)
2. Chapter 2 On-Vehicle Repair and Off-Vehicle Repair ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR CHART Symptom Suspected Area See Vehicle does not move in any forward positions and reverse positions 1. Manual valve «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) 2. Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) 3. Front and rear planetary gear *2 - 4. U/D planetary gear *2 - 5. U/D one-way clutch (F2) *2 - 6. Forward clutch (C1)*2 - 7. U/D brake (B3) *2 - Vehicle does not move in R position 1. Front and rear planetary gear unit *2 - 2. U/D planetary gear unit *2 - 3. Direct clutch (C2) *2 - 4. U/D brake (C3) *2 - 5. 1st and reverse brake (B2) *2 - No up-shift (1st -> 2nd) 1. Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) 2. No. 1 one-way clutch (F1) *2 - 3. 2nd brake (B1)*2 - No up-shift (2nd -> 3rd) 1. Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) 2. Direct clutch (C2) *2 - No up-shift (3rd -> 4th) 1. Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) 2. U/D clutch (C3) *2 - No down-shift (4th -> 3rd) Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) No down-shift (3rd -> 2nd) Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) No down-shift (2nd -> 1st) Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) No lock-up or No lock-up off 1. Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) 2. Torque converter clutch «AUTOMATIC TRANSAXLE ASSEMBLY»(ref-296232-S06995956852008082200000) Harsh engagement (N -> D) 1. C1 accumulator *2 - 2. Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) 3. Forward clutch (C1) *2 - 4. U/D one-way clutch (F2) *2 - 5. No. 1 one-way clutch (F1) *2 - Harsh engagement (N -> R) 1. Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) 2. Direct clutch (C2) *2 - 3. 1st and reverse brake (B2) *2 - Harsh engagement (Lock-up) 1. Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) 2. Torque converter clutch «AUTOMATIC TRANSAXLE ASSEMBLY»(ref-296232-S06995956852008082200000) Harsh engagement (2nd -> 3rd) Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) Harsh engagement (3rd -> 4th) Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) Harsh engagement (4th -> 3rd) Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) Slip or shudder (Forward position: After warm-up) 1. Oil strainer «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) 2. Torque converter clutch «AUTOMATIC TRANSAXLE ASSEMBLY»(ref-296232-S06995956852008082200000) 3. Forward clutch (C1)*2 - 4. Direct clutch (C2) *2 - 5. U/D brake (C3) *2 - 6. No. 1 one-way clutch (F1) *2 - 7. U/D one-way clutch (F2) *2 - Slip or shudder (R position) 1. Oil strainer «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) 2. Direct clutch (C2) *2 - 3. 1st and reverse brake (B2) *2 - Slip or shudder (1st) No. 1 one-way clutch (F-1) *2 - Slip or shudder (2nd) 1. U/D one-way clutch (F2) *2 - 2. 2nd brake (B1)*2 - Slip or shudder (3rd) Direct clutch (C2) *2 - Slip or shudder (4th) U/D clutch (C3) *2 - No engine braking (1st to 3rd: D position) U/D brake (B3) *2 - No engine braking (1st: L position) 1st and reverse brake (B2) *2 - No engine braking (2nd: 2 position) 2nd brake (B1)*2 - Poor acceleration (All position) 1. Torque converter clutch «AUTOMATIC TRANSAXLE ASSEMBLY»(ref-296232-S06995956852008082200000) 2. U/D planetary gear *2 - Poor acceleration (4th) 1. U/D clutch (C3)*2 - 2. U/D planetary gear *2 - Large shift shock or engine stalls when starting off or stopping Torque converter clutch «AUTOMATIC TRANSAXLE ASSEMBLY»(ref-296232-S06995956852008082200000) No kick-down Valve body assembly «VALVE BODY ASSEMBLY»(ref-296232-S17858625432008082200000) HINT: *2: Refer to «OVERHAUL - U240E & U241E»(ref-153380) article.

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Scheme 9

1. ECM HINT: Each ECM terminal's standard voltage is shown in the table below. In the table, first follow the information under "Condition". Look under "Symbols (Terminal No.)" for the terminals to inspected. The standard voltage between the terminals is shown under "Specific Condition". Use the illustration above as a reference for the ECM terminals. SYMPTOMS REFERENCE Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition D (E5-21) - E1 (E8-3) W - L D shift position switch signal Ignition switch to the ON position and shift lever D and 3 position 10 to 14 V Ignition switch to the ON position and shift lever except D and 3 position Below 1 V R (E5-11) - E1 (E8-3) P - L R shift position switch signal Ignition switch to the ON position and shift lever R position 10 to 14 V Ignition switch to the ON position and shift lever except R position Below 1 V SPD (E5-8) - E1 (E8-3) V - L Speed signal Vehicle speed 20 km/h (12 mph) Pulse generation (See g waveform 7) STP (E5-4) - E1 (E8-3) L-L Stop light switch signal Brake pedal is depressed 7.5 to 14 V Brake pedal is released Below 1.5 V 3 (E5-19) - E1 (E8-3) Y - L 3 shift position switch signal Ignition switch to the ON position and shift lever 3 position 10 to 14 V Ignition switch to the ON position and shift lever except 3 position Below 1 V 2 (E5-10) - E1 (E8-3) R - L 2 shift position switch signal Ignition switch to the ON position and shift lever 2 position 10 to 14 V Ignition switch to the ON position and shift lever except 2 position Below 1 V L (E5-9) - E1 (E8-3) LG - L L shift position switch signal Ignition switch to the ON position and shift lever L position 10 to 14 V Ignition switch to the ON position and shift lever except L position Below 1 V NSW (E4-30) - E1 (E8-3) Y - L Park neutral switch signal Ignition switch to the ON position and shift lever P and N position Below 2 V Ignition switch to the ON position and shift lever except P and N position 10 to 14 V DSL (E7-9) - E1 (E8-3) Y - L DSL solenoid signal Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF) Pulse generation (See b waveform 2) S4 (E7-8) - E1 (E8-3) V - L S4 solenoid signal Ignition switch to the ON position Below 1 V 4th gear 10 to 14 V Except 4th gear Below 1 V SL2+ (E7-14) - SL2 - (E7-15) LG - V SL2 solenoid signal Engine idle speed Pulse generation (See c waveform 3) Ignition switch to the ON position Below 1 V 1st or 2nd gear 10 to 14 V 3rd or O/D gear Below 1 V SL1+ (E7-11) - SL1 - (E7-10) B - P SL1 solenoid signal Engine idle speed Pulse generation (See d waveform 4) Ignition switch to the ON position 10 to 14 V 1st gear 10 to 14 V Except 1st gear Below 1 V NC+ (E7-34) - NC- (E7-26) R - G Speed sensor (NC) signal Vehicle speed 30 km/h (19 mph): (3rd gear) Engine speed 1,400 rpm Pulse generation (See e waveform 5) NT+ (E7-35) - NT- (E7-27) L - LG Speed sensor (NT) signal Vehicle speed 20 km/h (12 mph) Pulse generation (See f waveform 6) SLT+ (E7-12) - SLT- (E7-13) BR - GR SLT solenoid signal Engine idle speed Pulse generation (See a waveform 1) THO1 (E7-24) - E2 (E8-28) G - R ATF temperature sensor signal ATF temperature: 115°C (239°F) or more Below 1.5 V Waveform 1 Reference: WAVEFORM REFERENCE Terminal SLT+ - SLT- Tool setting 5 V/DIV., 1 ms./DIV. Vehicle condition Engine idle speed Waveform 2 Reference: WAVEFORM REFERENCE Terminal DSL - E1 Tool setting 10 V/DIV., 100 ms./DIV. Vehicle condition Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF) Waveform 3 Reference: WAVEFORM REFERENCE Terminal SL2+ - SL2- Tool setting 5 V/DIV., 1 ms./DIV. Vehicle condition Engine idle speed Waveform 4 Reference: WAVEFORM REFERENCE Terminal SL1 +- SL1- Tool setting 5 V/DIV., 1 ms./DIV. Vehicle condition Engine idle speed Waveform 5 Reference: WAVEFORM REFERENCE Terminal NC +- NC- Tool setting 1 V/DIV., 1 ms./DIV. Vehicle condition Vehicle speed 30 km/h (19 mph): (3rd gear) Engine speed 1.400 rpm Waveform 6 Reference: WAVEFORM REFERENCE Terminal NT+ - NT- Tool setting 5 V/DIV., 0.5 ms./DIV. Vehicle condition Vehicle speed 20 km/h (12 mph) Waveform 7 Reference: WAVEFORM REFERENCE Terminal SPD-E1 Tool setting 5 V/DIV., 20ms./DIV. Vehicle condition Vehicle speed 20 km/h (12 mph)

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Scheme 13

1. DESCRIPTION When troubleshooting OBD II vehicles, the only difference from the usual troubleshooting procedure is to connect an OBD II scan tool complying with SAE J1987 or a intelligent tester to the vehicle, and read off various data output from the vehicle's ECM. OBD II regulations require that the vehicle's onboard computer illuminate the Malfunction Indicator Lamp (MIL) on the instrument panel when the computer detects a malfunction in the computer itself or in the drive system components which affect the vehicle emissions. In addition to illuminating the MIL when a malfunction is detected, the applicable DTCs prescribed by SAE J2012 are recorded in the ECM memory (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-296232-S12241543022008082200000) ). If the malfunction does not occur in 3 consecutive trips, the MIL goes off but the DTCs remain in the ECM memory. To check the DTCs, connect the OBD II scan tool or intelligent tester to the DLC3 of the vehicle. The OBD II scan tool or intelligent tester also enables you to erase the DTCs and check freeze frame data and various forms of engine data (For operating instructions, see the instruction book). The DTCs include SAE controlled codes and Manufacturer controlled codes. SAE controlled codes must be set as prescribed by the SAE, while Manufacturer controlled codes can be set freely by a manufacturer within the prescribed limits (See «DIAGNOSTIC TROUBLE CODE CHART»(ref-296232-S12241543022008082200000) ). The diagnosis system operates in "normal mode" during the normal vehicle use. In normal mode, "2-trip detection logic" is used to ensure accurate detection of malfunction. "Check mode" is also available to technicians as an option. In check mode, "1-trip detection logic" is used for simulating malfunction symptoms and increasing the system's ability to detect malfunctions, including intermittent malfunction. *2 trip detection logic: When a malfunction is first detected, the malfunction is temporarily stored in the ECM memory (1st trip). IF the ignition switch is turned off and then turned on again, and same malfunction is detected again, the MIL will illuminate. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction. The intelligent tester displays freeze frame data recorded at five different points: 1) 3 times before the DTC is set, 2) once when the DTC is set, and 3) once after the DTC is set. The data can be used to simulate the vehicle's condition around the time of the malfunction. The data may be helpful in determining the cause of a malfunction. It may also be helpful in determining whether a DTC is being caused by a temporary malfunction.
2. INSPECT THE DLC3 The vehicle's ECM uses ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. Terminals of DLC 3 RESULT REFERENCE CHART Symbol Terminal No. Name Reference Terminal Result Condition SIL 7 Bus "+" line 5 - Signal ground Pulse generation During transmission CG 4 Chassis ground Body ground Below 1 ohms Always SG 5 Signal ground Body ground Below 1 ohms Always BAT 16 Battery positive Body ground 11 to 14 V Always CANH 6 CAN bus line CANL 54 to 69 ohms IG switch OFF (1) CANH 6 HIGH-level CAN bus line Battery positive 6 kohms or higher IG switch OFF (1) CANH 6 HIGH-level CAN bus line CG 200 ohms or higher IG switch OFF (1) CANL 14 LOW-level CAN bus line Battery positive 6 kohms or higher IG switch OFF (1) CANL 14 LOW-level CAN bus line CG 200 ohms or higher IG switch OFF (1) NOTE: (1) Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector. HINT: The DLC3 is the interface prepared for reading various data from the vehicle's ECM. After connecting the cable of the intelligent tester to the CAN VIM, turn the ignition switch ON and turn the tester ON. If a communication failure message is displayed on the tester screen (on the tester: UNABLE TO CONNECT TO VEHICLE), a problem exists in either the vehicle or tester. In order to identify the location of the problem, connect the tester to another vehicle. If the communication is normal when the tool is connected to another vehicle, inspect the DLC3 on the original vehicle. If the communication is still impossible when the tool is connected to another vehicle, the problem is probably in the tool itself, so consult the Service Department listed in the tool's instruction manual.
3. CHECK BATTERY VOLTAGE Measure the battery voltage. Battery voltage: 11 to 14 V If voltage is below 11V, replace the battery before proceeding.
4. CHECK MIL Check that the MIL illuminates when turning the ignition switch to the ON position. HINT: If the MIL does not light up, troubleshoot the combination meter. When the engine is started, the MIL should go off. If the lamp remains on, it means that the diagnosis system has detected a malfunction or abnormality in the system.

DTC CHECK / CLEAR

1. DTC CHECK (NORMAL MODE) NOTE: When the diagnostic system is switched from the normal mode to the check mode, all the DTCs and freeze frame data recorded in the normal mode will be erased. So before switching modes, always check the DTCs and freeze frame data, and note them down. DTCs which are stored in the ECM can be displayed with the intelligent tester or generic OBDII scan tool. These scan tools can display pending DTCs and current DTCs. Some DTC aren't stored if the ECM doesn't detect a malfunction during consecutive driving. However, the detected malfunction during once driving is stored as pending DTC. Checking DTCs using the OBD II scan tool or intelligent tester. Connect the intelligent tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the Data Link Connector 3 (DLC3). Turn the ignition switch to the ON position. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES (or PENDING CODE). Use the OBD II scan tool or intelligent tester to check the DTCs and freeze frame data and note them down (For operating instructions, see the OBD II scan tool's instruction book). NOTE: When simulating symptoms with an OBD II scan tool (excluding intelligent tester) to check the DTCs, use the normal mode. For codes on the DTCs chart which are subject to "2 trip detection logic". Turn the ignition switch off after the symptom is simulated once. Then repeat the simulation process again. When the problem has been simulated twice, the MIL illuminates and the DTCs are recorded in the ECM.
2. DTC CLEAR Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3. Turn the ignition switch to the ON position. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CLEAR CODES and press YES.

DATA LIST / ACTIVE TEST

1. DATA LIST HINT: According to the DATA LIST displayed by the intelligent tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one method to shorten labor time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Warm up the engine. Turn the ignition switch off. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the on position. Turn on the tester. Select the item "DIAGNOSIS / OBD/MOBD / ENGINE AND ECT / DATA LIST". According to the display on the tester, read the "DATA LIST". DATA LIST RANGE Tester Display Measurement Item/Range Normal Condition Diagnostic Note STOP LIGHT SW Stop Light Switch Status/ON or OFF Brake Pedal is depressed: ON Brake Pedal is released: OFF - PNP SW (NSW) PNP Switch Status/ON or OFF Shift lever position is; P and N: ON Except P and N: OFF When the shift lever position displayed on the Intelligent tester differs from the actual position, adjustment of the PNP switch or the shift cable may be incorrect. HINT: When the failure still occurs even after adjusting these parts (See «DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT)»(ref-296232-S41959078732008082200000) ). REVERSE PNP Switch Status/ON or OFF Shift lever position is; R: ON Except R: OFF ↑ DRIVE PNP Switch Status/ON or OFF Shift lever position is; D and 3: ON Except D and 3: OFF ↑ 3RD PNP Switch Status/ON or OFF Shift lever position is; 3: ON Except 3: OFF ↑ 2ND PNP Switch Status/ON or OFF Shift lever position is; 2: ON Except 2: OFF ↑ LOW PNP Switch Status/ON or OFF Shift lever position is; L: ON Except L: OFF ↑ SHIFT Actual Gear Position/1st, 2nd, 3rd or 4th (O/D) Shift lever position is; L: 1st 2: 1st or 2nd 3: 1st, 2nd or 3rd D (O/D ON): 1st, 2nd, 3rd or 4th (O/D) - LOCK UP Lock Up Status/ON or OFF Lock Up: ON Except Lock Up: OFF - LOCK UP SOL Lock Up Solenoid Status/ON or OFF Lock Up: ON Except Lock Up: OFF - SOLENOID (SLT) Shift Solenoid SLT Status/ON or OFF Accelerator pedal is depressed: OFF Accelerator pedal is released: ON - AT OIL TEMP1 ATF Temp. Sensor Value/min.: -40°C (-40°F), max.: 215°C (419-F) After Stall Test; Approx. 80°C (176°F) Equal to ambient temperature when cold soak If the value is "-40°C (-40°F)" or "215°C (419°F)", ATF temp, sensor circuit is opened or shorted. SPD (NC) Counter Gear Speed/display: 50 r/min HINT: 4th (O/D) when shift lever position is D position (After warming up the engine); Intermediate shaft speed (NC) becomes close to the engine speed. - SPD (NT) Input Turbine Speed/display: 50 r/min HINT: Lock-up ON (After warning up the engine): Input Turbine speed (NT) equal to the engine sped. Lock-up OFF (Idling at N position): Input Turbine speed (NT) nearly equal to the engine speed.
2. ACTIVE TEST HINT: Performing the ACTIVE TEST using the intelligent tester allows the relay, VSV, actuator and so on to operate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method to shorten labor time. It is possible to display the DATA LIST during the ACTIVE TEST. Warm up the engine. Turn the ignition switch off. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position. Push the "ON" button of the intelligent tester. Select the item "DIAGNOSIS / OBD/MOBD / ENGINE AND ECT / ACTIVE TEST". According to the display on tester, perform the "ACTIVE TEST". DATA LIST RANGE Tester Display Test Part Control Range Diagnostic Note SHIFT [Test Details] Operate the shift solenoid valve and set the each shift position by yourself. [Vehicle Condition] IDL: ON Less than 50 km/h (31 mph) [Others] Press "-->" button: Shift up Press "<--" button: Shift down 1st / 2nd / 3rd / 4th Possible to check the operation of the shift solenoid valves. LOCK UP [Test Details] Control the shift solenoid DSL to set the automatic transaxle to the lock-up condition. [Vehicle Condition] Throttle valve opening angle: Less than 35% Vehicle Speed: 58 km/h (36 mph) or more ON/OFF Possible to check the DSL operation. SOLENOID (SL1) [Test Details] Operate the shift solenoid SL1 [Vehicle Condition] Vehicle Stopped. Shift lever P or N position ON/OFF - SOLENOID (SL2) [Test Details] Operate the shift solenoid SL2 [Vehicle Condition] Vehicle Stopped. Shift lever P or N position ON/OFF - SOLENOID (S4) [Test Details] Operate the shift solenoid S4 [Vehicle Condition] Vehicle Stopped. Shift lever P or N position ON/OFF - SOLENOID (DSL) [Test Details] Operate the shift solenoid DSL [Vehicle Condition] Vehicle Stopped. Shift lever P or N position ON/OFF - SOLENOID (SLT) (1) [Test Details] Operate the shift solenoid SLT and raise the line pressure. [Vehicle Condition] Vehicle Stopped. IDL: ON HINT: OFF: Line pressure up (When the active test of "SOLENOID (SLT)" is performed, the ECM commands the SLT solenoid to turn off). ON: No action (normal operation) ON/OFF - (1) "SOLENOID (SLT)" in the ACTIVE TEST is performed to check the line pressure changes by connecting the SST to the automatic transaxle, which is used in the HYDRAULIC TEST (See «HYDRAULIC TEST»(ref-296232-S10547724202008082200000) ) as well. HINT: The pressure values in ACTIVE TEST and HYDRAULIC TEST are different from each other.

DIAGNOSTIC TROUBLE CODE CHART

If a DTC is displayed during the DTC check, check the parts listed in the table below and proceed to the page given.

HINT

1. *1: Comes on MIL (Malfunction Indicator Lamp) light up
2. *2: "DTC stored" mark means ECM memorizes the malfunction code if the ECM detects the DTC detection condition.
3. This DTC may be output when the clutch, brake and gear components etc. inside the automatic transmission are damaged.

AUTOMATIC TRANSAXLE SYSTEM

AUTOMATIC TRANSAXLE SYSTEM REFERENCE

INSPECTION PROCEDURE

HINT

According to the DATA LIST displayed by the OBD II scan tool or intelligent tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one method to shorten labor time.

Note. In the table below, the value listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether apart is faulty or not.

1. READ DATA LIST Warm up the engine. Turn the ignition switch off. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position. Turn on the tester. Select the item "DIAGNOSIS / OBD/MOBD / ECT / DATA LIST". According to the display on the tester, read the "DATA LIST". DATA LIST REFERENCE Tester Display Measurement Item/Range Normal Condition Diagnostic Note AT OIL TEMP1 ATF Temp. Sensor Value/min.: -40°C (-40°F), max.: 215°C (419°F) After Stall Test Approx. 80°C (176°F) Equal to ambient temperature when cold soak If the value is "-40°C (-40°F)" or "215°C (419°F)", ATF temp, sensor circuit is opened or shorted. HINT: When DTC P0712 is output and OBD II scan tool or intelligent tester output is 150°C (302°F), there is a short circuit.

When DTC P0713 is output and OBD II scan tool or intelligent tester output is -40°C (-40°F), there is an open circuit.

Measure the resistance between terminal THO1 (THO) and body ground.

DATA LIST REFERENCE

HINT

If a circuit related to the ATF temperature sensor become open, P0713 is immediately set (in 0.5 second).

When P0713 is set, P0711 cannot be detected.

It is not necessary to inspect the circuit when P0711 is set.

Scheme 14

Scheme 15

1. INSPECT TRANSMISSION WIRE (ATF TEMPERATURE SENSOR) Disconnect the transmission wire connector from the transaxle. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Specified Condition 1 (THO) - 6 (E2) 79 a to 156 kohms 1 (THO) - Body ground 10 kohms or higher 6 (E2) - Body ground ↑ HINT: If the resistance is out of the specified range with either the ATF temperature shown in the table below, the driveability of the vehicle may decrease. RESISTANCE SPECIFICATION ATF Temperature Specified Condition 10°C (50°F) 5 to 8 kohms 25°C (77°F) 2.5 to 4.5 kohms 110°C (230°F) 0.22 to 0.28 kohms NG: REPAIR OR REPLACE TRANSMISSION WIRE OK: Go to next step.
2. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) Connect the transmission wire connector to the transaxle. Disconnect the ECM connectors. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Specified Condition E7-24 (THO1) - E8-28 (E2) 79 ohms to 156 kohms Measure the resistance according to the value(s) in the table below. Standard resistance (Check for short) RESISTANCE SPECIFICATION Tester Connection Specified Condition E7-24 (THO1) - Body ground 10 kohms or higher E8-28 (E2) - Body ground NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE ECM

HINT

According to the DATA LIST displayed by the OBD II scan tool or intelligent tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one method to shorten labor time.

Note. In the table below, the value listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether apart is faulty or not.

1. READ DATA LIST Warm up the engine. Turn the ignition switch off. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position. Turn on the tester. Select the item "DIAGNOSIS / OBD/MOBD / ECT / DATA LIST". According to the display on the tester, read the "DATA LIST". DATA LIST REFERENCE Tester Display Measurement Item/Range Normal Condition Diagnostic Note AT OIL TEMP1 ATF Temp. Sensor Value/min.: -40° (-40°F), max.: 215°C (419°F) After Stall Test; Approx. 80°C (176°F) Equal to ambient temperature when cold soak If the value is "-40°C (-40°F)" or "215°C (419°F)", ATF temp, sensor circuit is opened or shorted. HINT: When DTC P0712 is output and OBD II scan tool or intelligent tester output is 150°C (302°F), there is a short circuit. When DTC P0713 is output and OBD II scan tool or intelligent tester output is -40°C (-40°F), there is an open circuit. Measure the resistance between terminal THO1 (THO) and body ground. DATA LIST REFERENCE Temperature Displayed Malfunction -40°C (-40°F) Open circuit 150°C (302°F) or more Short circuit HINT: If a circuit related to the ATF temperature sensor becomes open, P0713 is immediately set (in 0.5 second). When P0713 is set, P0711 cannot be detected. It is not necessary to inspect the circuit when P0711 is set.

1. CHECK CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0711) Connect the OBD II scan tool or the intelligent tester to the DLC3. Turn the ignition switch to the ON position and push the OBD II scan tool or the intelligent tester main switch ON. When you use intelligent tester: Select the item "DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES". Read the DTCs using the OBD II scan tool or the intelligent tester. Result DTC RESULT REFERENCE Display (DTC output) Proceed to Only "P0711" is output A "P0711" and other DTCs B HINT: If any other codes besides "P0711" are output, perform troubleshooting for those DTCs first. B: GO TO «DTC CHART»(ref-296232-S12241543022008082200000) A: Go to next step.
2. CHECK TRANSMISSION FLUID LEVEL OK: Automatic transmission fluid level is correct. NG: ADD FLUID OK: REPLACE TRANSMISSION WIRE (ATF TEMPERATURE SENSOR)

HINT

Performing the ACTIVE TEST using the intelligent tester allows the relay, VSV, actuator and so on to operate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method to shorten labor time.

It is possible to display the DATA LIST during the ACTIVE TEST.

Scheme 16

1. PERFORM ACTIVE TEST Warm up the engine. Turn the ignition switch off. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position. Turn on the tester. Select the item "DIAGNOSIS / OBD/MOBD / ECT / ACTIVE TEST". According to the display on the tester, perform the "ACTIVE TEST". DATA LIST REFERENCE Tester Display Test Part Control Range Diagnostic Note LOCK UP [Test Details] Control the shift solenoid DSL to set the automatic transaxle to the lock-up condition. [Vehicle Condition] Throttle valve opening angle: Less than 35% Vehicle Speed: 58 km/h (36 mph) or more ON/OFF Possible to check the DSL operation. HINT: This test can be conducted when the vehicle speed is 58 km/h (36 mph) or more. This test can be conducted in the 3rd or O/D gear. Lightly depress the accelerator pedal and check that the engine speed does not change abruptly. HINT: When changing the accelerator pedal opening angle while driving, if the engine speed does not change, lock-up is on. Slowly release, but not fully, the accelerator pedal in order to decelerate. (Fully releasing the pedal will close the throttle valve and lock-up may be turned off.)

Scheme 17

Scheme 18

Scheme 19

1. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0741) Connect the OBD II scan tool or the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position and turn the OBD II scan tool or the intelligent tester main switch ON. When you use intelligent tester: Select the item "DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES". Read the DTCs using the OBD II scan tool or the intelligent tester. Result DTC RESULT REFERENCE Display (DTC output) Proceed to Only "P0741" is output A "P0741" and other DTCs B HINT: If any other codes besides "P0741" are output, perform the troubleshooting for those DTCs first. B: GO TO «DTC CHART»(ref-296232-S12241543022008082200000) A: Go to next step.
2. INSPECT TRANSMISSION WIRE (DSL) Disconnect the transmission wire connector from the transaxle. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Specified Condition 20°C (68°F) 3 - Body ground 11 to 13 ohms NG: Go to step 4 OK: Go to next step.
3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) Connect the transmission wire connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Specified Condition 20°C (68°F) E7-9 (DSL) - Body ground 11 to 13 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step.
4. INSPECT SHIFT SOLENOID VALVE (DSL) Remove the shift solenoid valve DSL. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Specified Condition 20°C (68°F) Solenoid Connector (DSL) - Solenoid Body (DSL) 11 to 13 ohms Connect the positive (+) lead to the terminal of the solenoid connector, and the negative (-) lead to the solenoid body. OK: The solenoid valve makes an operating sound. NG: REPLACE SHIFT SOLENOID VALVE (DSL) OK: Go to next step.
5. CHECK TRANSMISSION WIRE OK: The connectors and pins are securely installed. There is no open or short on the wire harness. NG: REPAIR OR REPLACE TRANSMISSION WIRE OK: Go to next step.
6. INSPECT TRANSMISSION VALVE BODY ASSEMBLY OK: There are no foreign objects on each valve and they operate smoothly. NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY OK: Go to next step.
7. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY OK: The torque converter clutch operates normally. NG: REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY OK: REPAIR AUTOMATIC TRANSAXLE ASSEMBLY

HINT

Performing the ACTIVE TEST using the intelligent tester allows the relay, VSV, actuator and so on to operate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method to shorten labor time.

It is possible to display the DATA LIST during the ACTIVE TEST.

1. PERFORM ACTIVE TEST Warm up the engine. Turn the ignition switch off. Connect the OBD II scan tool or intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position. Turn on the tester. Select the item "DIAGNOSIS / OBD/MOBD / ECT / ACTIVE TEST / SHIFT". According to the display on the tester, perform the "ACTIVE TEST". HINT: While driving, the shift position can be forcibly changed with the intelligent tester. Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you to confirm the problem (See «FAIL-SAFE CHART»(ref-296232-S14588556122008082200000) ). FAIL-SAFE CHART Tester Display Test Part Control Range Diagnostic Note SHIFT [Test Details] Operate the shift solenoid valve and set each shift position by yourself. [Vehicle Condition] IDL: ON Less than 50 km/h (31 mph) [Others] Press "<--" button: Shift up Press "-->" button: Shift down 1st / 2nd / 3rd / 4th Possible to check the operation of the shift solenoid valves. HINT: This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less. The shift position commanded by the ECM is shown in the DATA LIST / SHIFT display on the intelligent tester.

Scheme 20

1. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0746) Connect the OBD II scan tool or intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position and turn the OBD II scan tool or the intelligent tester main switch ON. When you use intelligent tester: Select the item "DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES". Read the DTCs using the OBD II scan tool or the intelligent tester. Result DTC RESULT REFERENCE Display (DTC output) Proceed to Only "P0746" is output A "P0746" and other DTCs B HINT: If any other codes besides "P0746" are output, perform the troubleshooting for those DTCs first. B: GO TO «DTC CHART»(ref-296232-S12241543022008082200000) A: Go to next step.
2. INSPECT SHIFT SOLENOID VALVE SL1 Remove the shift solenoid valve SL1. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Specified Condition 20°C (68°F) 1 - 2 5.0 to 5.6 ohms Connect the positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve. OK: The solenoid makes an operating sound. NG: REPLACE SHIFT SOLENOID VALVE SL1 OK: Go to next step.
3. INSPECT TRANSMISSION VALVE BODY ASSEMBLY OK: There are no foreign objects on each valve. NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY OK: Go to next step.
4. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY OK: The torque converter clutch operates normally. NG: REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY OK: REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSEMBLY

HINT

Performing the ACTIVE TEST using the intelligent tester allows the relay, VSV, actuator and so on to operate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method to shorten labor time.

It is possible to display the DATA LIST during the ACTIVE TEST.

1. PERFORM ACTIVE TEST Warm up the engine. Turn the ignition switch off. Connect the OBD II scan tool or intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position. Turn on the tester. Select the item "DIAGNOSIS / OBD/MOBD / ECT / ACTIVE TEST / SHIFT". According to the display on the tester, perform the "ACTIVE TEST". HINT: While driving, the shift position can be forcibly changed with the intelligent tester. Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you to confirm the problem (See «FAIL-SAFE CHART»(ref-296232-S14588556122008082200000) ). FAIL-SAFE CHART Tester Display Test Part Control Range Diagnostic Note SHIFT [Test Details] Operate the shift solenoid valve and set each shift position by yourself. [Vehicle Condition] IDL: ON Less than 50 km/h (31 mph) [Others] Press "-->" button: Shift up Press "<--" button: Shift down 1st / 2nd / 3rd / 4th Possible to check the operation of the shift solenoid valves. HINT: This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less. The shift position commanded by the ECM is shown in the DATA LIST / SHIFT display on the intelligent tester.

Scheme 21

1. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0766) Connect the OBD II scan tool or intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position and turn the OBD II scan tool or the intelligent tester main switch ON. Select the item "DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES". Read the DTCs using the OBD II scan tool or the intelligent tester. Result DTC RESULT REFERENCE Display (DTC output) Proceed to Only "P0766" is output A "P0766" and other DTCs B HINT: If any other codes besides "P0766" are output, perform the troubleshooting for those DTCs first. B: GO TO «DTC CHART»(ref-296232-S12241543022008082200000) A: Go to next step.
2. INSPECT SHIFT SOLENOID VALVE S4 Remove the shift solenoid valve S4. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Specified Condition 20°C (68°F) Solenoid Connector (S4) - Solenoid Body (S4) 11 to 15 ohms Connect the positive (+) lead to the terminal of the solenoid connector, and the negative (-) lead to the solenoid body. OK: The solenoid makes an operating sound. NG: REPLACE SHIFT SOLENOID VALVE S4 OK: Go to next step.
3. INSPECT TRANSMISSION VALVE BODY ASSEMBLY OK: There are no foreign objects on each valve. NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY OK: Go to next step.
4. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY OK: The torque converter clutch operates normally. NG: REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY OK: REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSEMBLY

1. PERFORM ACTIVE TEST Warm up the engine. Turn the ignition switch off. Connect the OBD II scan tool or intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position. Turn on the tester. Select the item "DIAGNOSIS / OBD/MOBD / ECT / ACTIVE TEST / SHIFT". According to the display on the tester, perform the "ACTIVE TEST". HINT: While driving, the shift position can be forcibly changed with the intelligent tester. Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you to confirm the problem (See «FAIL-SAFE CHART»(ref-296232-S14588556122008082200000) ). FAIL-SAFE CHART Tester Display Test Details Control Range Diagnostic Note SHIFT [Test Details] Operate the shift solenoid valve and set the each shift position by yourself. [Vehicle Condition] IDL: ON Less than 50 km/h (31 mph) [Others] Press "-->" button: Shift up Press "<--" button: Shift down 1st / 2nd / 3rd / 4th Possible to check the operation of the shift solenoid valves. HINT: This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less. The shift position commanded by the ECM is shown in the DATA LIST / SHIFT display on the intelligent tester.

Scheme 22

1. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0776) Connect the OBD II scan tool or intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position and turn the OBD II scan tool or the intelligent tester main switch ON. When you use intelligent tester: Select the item "DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES". Read the DTCs using the OBD II scan tool or the intelligent tester. Result DTC RESULT REFERENCE Display (DTC output) Proceed to Only "P0776" is output A "P0776" and other DTCs B HINT: If any other codes besides "P0776" are output, perform the troubleshooting for those DTCs first. B: GO TO «DTC CHART»(ref-296232-S12241543022008082200000) A: Go to next step.
2. INSPECT SHIFT SOLENOID VALVE SL2 Remove the shift solenoid valve SL2. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Specified Condition 20°C (68°F) 1 - 2 5.0 to 5.6 ohms Connect the positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve. OK: The solenoid makes an operating sound. NG: REPLACE SHIFT SOLENOID VALVE SL2 OK: Go to next step.
3. INSPECT TRANSMISSION VALVE BODY ASSEMBLY OK: There are no foreign objects on each valve and they operate smoothly. NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY OK: Go to next step.
4. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY OK: The torque converter clutch operates normally. NG: REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY OK: REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSEMBLY

1. DATA LIST HINT: According to the DATA LIST displayed by the OBD II scan tool or intelligent tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one method to shorten labor time. READ DATA LIST Warm up the engine. Turn the ignition switch off. Connect the OBD II scan tool or intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the ON position. Turn on the tester. Select the item "DIAGNOSIS / OBD/MOBD / ECT / DATA LIST". According to the display on the tester, read the "DATA LIST". DATA LIST REFERENCE Tester Display Measurement Item/Range Normal Condition Diagnostic Note SPD (NC) Counter Gear Speed/display: 50 r/min HINT: 4th (O/D) when shift lever position is D position (After warming up the engine); Intermediate shaft speed (NC) becomes close to the engine speed. - HINT: SPD (NC) is always 0 while driving: Open or short in the sensor or circuit. SPD (NC) is always more than 0 and less than 300 rpm while driving the vehicle at 50 km/h (31 mph) or more: Sensor trouble, improper installation, or intermittent connection trouble of the circuit.

Scheme 23

Scheme 24

Scheme 25

1. INSPECT SPEED SENSOR INSTALLATION Check the speed sensor installation. OK: The installation bolt is tightened properly and there is no clearance between the sensor and transaxle case. NG: REPLACE SPEED SENSOR (NC) OK: Go to next step.
2. INSPECT SPEED SENSOR (NC) Disconnect the speed sensor connector from the transaxle. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Specified Condition 20°C (68°F) 1 - 2 560 to 680 ohms NG: REPLACE SPEED SENSOR (NC) OK: Go to next step.
3. CHECK HARNESS AND CONNECTOR (SPEED SENSOR - ECM) Connect the speed sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Specified Condition 20°C (68°F) E7-34 (NC+) - E7-26 (NC-) 560 to 680 ohms Measure the resistance according to the value(s) in the table below. Standard resistance (Check for short) RESISTANCE SPECIFICATION Tester Connection Specified Condition E7-34 (NC+) - Body ground 10 kohms or higher E7-26 (NC-) - Body ground NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE ECM