DESCRIPTION
The battery supplies electricity to the TCM even when the engine switch is off. This power allows the TCM to store data such as DTC history and freeze frame data. If the battery voltage falls below a minimum level, this stored data will be cleared and the TCM determines that there is a malfunction in the power supply circuit. When the engine is next started, the TCM will illuminate the MIL and stores the DTC.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0560 | Diagnosis Condition The engine switch is turned on (IG) for the first time after the memory in the ECU was initialized. Malfunction Status The BATT terminal circuit of the TCM is open or shorted to ground. Malfunction Time 3 seconds or more Other 1 trip detection logic | Harness and connector SFI system TCM |
HINT
If DTC P0560 is set, the TCM does not store other DTCs.
While the engine is being cranked, battery voltage is applied to terminal STA of the TCM.
If the TCM detects the Starter Control (STA) signal while the vehicle is being driven, it determines that there is a malfunction in the STA circuit. The TCM then illuminates the MIL and stores the DTC.
This monitor runs when the vehicle is driven at 20 km/h (12.43 mph) or more for 20 seconds or more.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0617 | Diagnosis Condition The vehicle speed is more than 20 km/h (12.34 mph) and the engine speed is more than 1000 rpm. Malfunction Status STA signal ON Malfunction Time 20 seconds or more Other 1 trip detection logic | Park/Neutral position switch Starter relay circuit Cranking holding function circuit Harness and connector TCM |
The TCM monitors its internal operation and it will store this DTC when it detects an internal malfunction.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P062F | TCM internal error (EEPROM) | TCM |
MONITOR DESCRIPTION
The TCM monitors its internal operation. If the internal operation is malfunctioning, the TCM illuminates the MIL and stores this DTC.
The park/neutral position switch assembly detects the shift lever position and sends signals to the TCM.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0705 | When condition (A) or (B) is met: (A) Either of the following conditions 1 or 2 is met: (2-trip detection logic) 1. Any 2 or more signals of the following are ON simultaneously: P input signal is ON. R input signal is ON. D input signal is ON. 2. Any 2 or more signals of the following are ON simultaneously: N input signal is ON. R input signal is ON. D input signal is ON. (B) All switches are OFF simultaneously for P, N, R and D (2-trip detection logic) | Open or short in park/neutral position switch assembly circuit Park/neutral position switch assembly TCM |
These DTCs indicate a problem with the park/neutral position switch assembly and the wire harness in the park/neutral position switch assembly circuit.
The park/neutral position switch assembly detects the shift lever position and sends signals to the TCM.
For safety, the park/neutral position switch assembly detects the shift lever position so that the engine can be started only when the shift lever is in P or N.
The park/neutral position switch assembly sends a signal to the TCM according to the shift lever position (R or D). The TCM determines that there is a problem with the switch or related parts if it receives more than 1 position signal simultaneously. The TCM will illuminate the MIL and store the DTC.
SYSTEM DESCRIPTION
The Automatic Transmission Fluid (ATF) temperature sensor converts the fluid temperature into a resistance value for use by the TCM.
Scheme 1250
The TCM applies a voltage to the temperature sensor through terminal THO1 of the TCM.
The sensor resistance changes with the transmission fluid temperature. As the temperature becomes higher, the sensor resistance decreases.
One terminal of the sensor is grounded so that the sensor resistance decreases and the voltage goes down as the temperature becomes higher.
The TCM calculates the fluid temperature based on the voltage signal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0711 | One of the following conditions (A), (B) or (C) is met: (A) (a), (b) and (c) are detected: (2-trip detection logic) (a) Intake air and engine coolant temperatures are more than 15°C (59°F) at engine start (b) Soak time is more than 5 hours (c) After normal driving for over 10 min. and 4.9 km (3 mile) or more, ATF temperature is less than 20°C (68°F) (B) Both (a) and (b) are detected: (2-trip detection logic) (a) Intake air and engine coolant temperatures are more than -10°C (14°F) at engine start (b) After normal driving for over 18 min. and 20 sec. and 8 km (5 mile) or more, ATF temperature is less than 20°C (68°F) (C) Both (a) and (b) are detected: (2-trip detection logic) (a) Engine coolant temperature is less than 50°C (122°F) at engine start (b) ATF temperature is 110°C (230°F) or more when engine coolant temperature reaches 60°C (140°F) | Transmission wire (ATF temperature sensor) |
This DTC indicates that there is a problem with output signals from the automatic transmission fluid (ATF) temperature sensor and that the sensor itself is defective. The ATF temperature sensor converts the ATF temperature into an electrical resistance value. Based on the resistance, the TCM determines the ATF temperature and detects an open or short in the ATF temperature circuit or a fault of the ATF temperature sensor.
After running the vehicle for a certain period, the ATF temperature should increase. If the ATF temperature is below 20°C (68°F) after running the vehicle for a certain period, the TCM interprets this as a fault turns on the MIL, and stores the DTC.
The Automatic Transmission Fluid (ATF) temperature sensor converts the fluid temperature into a resistance value for use by the TCM.
Scheme 1251
The TCM applies a voltage to the temperature sensor through terminal THO1 of the TCM.
The sensor resistance changes with the transmission fluid temperature. As the temperature becomes higher, the sensor resistance decreases.
One terminal of the sensor is grounded so that the sensor resistance decreases and the voltage goes down as the temperature becomes higher.
The TCM calculates the fluid temperature based on the voltage signal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0712 | ATF temperature sensor resistance is less than 79 ohms for 0.5 sec. or more (1-trip detection logic) | Short in ATF temperature sensor circuit Transmission wire (ATF temperature sensor) ATF temperature sensor TCM |
| P0713 | ATF temperature sensor resistance is more than 156 kohms for 0.5 seconds or more. Either of the following conditions is met (1 trip detection logic) | Open in ATF temperature sensor circuit Transmission wire (ATF temperature sensor) TCM |
| Condition (A): 394 seconds or more have elapsed after the engine start when engine coolant temperature or intake air temperature is -29.375°C (-20.875°F) or less. | ||
| Condition (B): 10 seconds or more have elapsed after the engine start when engine coolant temperature and intake air temperature are more than -29.375°C (- 20.875°F). |
These DTCs indicate an open or short in the automatic transmission fluid (ATF) temperature sensor circuit. The automatic transmission fluid (ATF) temperature sensor converts ATF temperature into an electrical resistance value. Based on the resistance, the TCM determines the ATF temperature, and the TCM detects an open or short in the ATF temperature circuit. If the resistance value of the ATF temperature is less than 79 ohms*1 or more than 156 kohms*2, the TCM interprets this as a fault in the ATF temperature sensor or wiring. The TCM will turn on the MIL and store the DTC.
*1: 150°C (302°F) or more is indicated regardless of the actual ATF temperature.
*2: -40°C (-40°F) is indicated regardless of the actual ATF temperature.
HINT
The ATF temperature can be checked on the Techstream display.
The transmission revolution sensor (NT) detects the input shaft rotation speed and sends it to the TCM.
Based on the transmission revolution sensor (NT) signal and the transmission revolution sensor (NC3 and NC) signal, the TCM controls engine torque and shift timing. Also, based on the input shaft rotation speed and the engine rpm signal, lock-up control is performed.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0715 | Diagnosis Condition +B voltage is 10 V or more and transmission revolution sensor (NT) signal malfunction is not detected Malfunction Status Transmission revolution sensor (NT) input voltage is less than 0.1 V, or more than 1.9 V Malfunction Time 4.5 seconds Other 1 trip detection logic | Transmission revolution sensor (NT) Harness and connector Transmission wire TCM |
| P0717 | Diagnosis Condition When shifting between 2nd and 8th gear, output wheel rotation speed is 1000 rpm or more, and +B voltage is 10 V or more. The park/neutral position switch and transmission revolution sensor (NT) are normal. Malfunction Status Transmission revolution sensor (NT) value is less than 300 rpm Malfunction Time 5 seconds Other 1 trip detection logic |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
The NT terminal of the TCM detects a speed signal from the speed sensor (NT) (input RPM). The TCM calculates gear shifts by comparing the speed sensor (NT) with the speed sensor (NC).
While the vehicle is operating in 2nd, 3rd, 4th, 5th, 6th, 7th or 8th gear with the shift lever in D, if the input shaft revolution speed is less than 300 rpm*1 although the output shaft revolution speed is more than 1000 rpm*2, the TCM interprets this as a fault, illuminates the MIL and stores the DTC.
*1: Pulse is not output or is irregularly output.
*2: The vehicle speed is 40 km/h (25 mph) or more.
The purpose of this circuit is to prevent the engine from stalling when the brakes are suddenly applied while driving in the lock-up condition.
When the brake pedal is depressed, this switch sends a signal to the TCM. Then the TCM cancels the operation of the lock-up clutch while braking is in progress.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0724 | The stop light switch remains ON even when the vehicle is driven in a STOP (less than 3 km/h (1.86 mph)) and GO (30 km/h (18.65 mph) or more) fashion 5 times. (2-trip detection logic). | Short in stop light switch signal circuit Stop light switch TCM |
This DTC indicates that the stop light switch remains ON. When the stop light switch remains ON during "stop and go" driving, the TCM interprets this as a fault in the stop light switch, illuminates the MIL, and stores the DTC. The vehicle must stop (less than 3 km/h (1.86 mph)) and go (30 km/h (18.65 mph) or more) five times for two consecutive driving cycles in order to set this DTC.
Based on signals from the transmission revolution sensors (NT, NC3 and NC), the actual gear is detected.
If the detected gear is different than the commanded gear, the TCM detects related mechanical problems in the shift solenoid valves, valve body and automatic transaxle assembly.
HINT
Actual gear when a malfunction occurs in shift solenoid valve SL1 (without fail-safe control)
| TCM commanded gear | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th |
|---|---|---|---|---|---|---|---|---|
| Actual gear during SL1 stuck ON malfunction | 1st | 2nd | 3rd | 4th | 5th | 5th | 5th | 5th |
| Actual gear during SL1 stuck OFF malfunction | N*1 | N*1 | N*1 | N*1 | N*1 | 6th | 7th | 8th |
- *1: Neutral
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0746 | Diagnosis Condition ECT is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D (no malfunctions are detected in shift solenoid valve SL1, SL2, SL3, SL4 and SL5, S1, speed sensors (NT, NC3, NC), water temperature sensor, oil temperature sensor, knock control sensor, electronic throttle, or CAN2) Malfunction Status When gear shift to 6th, 7th, and 8th is requested by TCM, actual gear changes to 5th gear Malfunction Time Malfunction status is detected 2 times per trip Other 2 trip detection logic | Shift solenoid valve S1 Shift solenoid valve SLT Shift solenoid valve SL1 Shift solenoid valve SL2 Shift solenoid valve SL3 Shift solenoid valve SL4 Shift solenoid valve SL5 Valve body assembly Torque converter assembly Automatic transaxle assembly (clutch, brake, gear, etc) |
| P0746 | Diagnosis Condition ECT is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D (no malfunctions are detected in shift solenoid valve SL1, SL2, SL3, SL4 and SL5, S1, speed sensors (NT, NC3, NC), water temperature sensor, oil temperature sensor, knock control sensor, electronic throttle, or CAN2) Malfunction Status When gear shifts to 1st to 5th are requested by TCM, engine speed overruns (neutral status) Malfunction Time Malfunction status continues for 0.5 sec. or more Other 2 trip detection logic | Shift solenoid valve S1 Shift solenoid valve SLT Shift solenoid valve SL1 Shift solenoid valve SL2 Shift solenoid valve SL3 Shift solenoid valve SL4 Shift solenoid valve SL5 Valve body assembly Torque converter assembly Automatic transaxle assembly (clutch, brake, gear, etc) |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
The TCM commands gear shifts by turning the shift solenoid valves on and off. According to the input shaft revolution speed, intermediate (counter) shaft revolution speed and turbine revolution speed, the TCM detects the actual gear (1st, 2nd, 3rd, 4th, 5th, 6th, 7th or 8th gear). When the gear commanded by the TCM and the actual gear are not the same, the TCM illuminates the MIL and stores the DTC.
Based on the ON-OFF combinations of the shift solenoid valves SL1, SL2, SL3, SL4 and SL5, the TCM performs gear shifts from 1st gear to 8th gear.
If a circuit related to a solenoid valve is open or shorted, the TCM uses the fail-safe function to turn other solenoid valves ON or OFF. If all solenoid valves are malfunctioning, only the mechanical fluid pressure circuit will function and some manual operation will be possible. If an open or short has occurred, the TCM cuts power to the malfunctioning solenoid valve.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0748 | Diagnosis Condition Driving so that gear changes occur Malfunction Status Solenoid valve SL1 circuit is open or shorted Malfunction Time 1 second Other 1 trip detection logic | Harness and connector Transmission wire Shift solenoid valve SL1 TCM |
These DTCs indicate an open or short in the shift solenoid valve SL1, SL2, SL3, SL4 and SL5 circuit. The TCM commands gear shifts by turning the shift solenoid valves ON/OFF.
When there is an open or short circuit in any shift solenoid valve circuit, the TCM detects the problem, illuminates the MIL and stores the DTC. Also, the TCM performs the fail-safe function and turns the other normally functioning shift solenoid valves ON/OFF. In case of an open or short circuit, the TCM stops sending current to the open or short circuited solenoid.
Based on signals from the transmission revolution sensors (NT, NC3 and NC), the actual gear is detected.
If the detected gear is different than the commanded gear, the TCM detects related mechanical problems in the shift solenoid valves, valve body and automatic transaxle assembly.
HINT
Actual gear when a malfunction occurs in shift solenoid valve S1 (without fail-safe control)
| TCM commanded gear | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th |
|---|---|---|---|---|---|---|---|---|
| Actual gear during S1 stuck OFF malfunction | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th |
| Actual gear during S1 stuck OFF malfunction | Fixed in 3rd (with the D1 range or M1 (1st gear) selected) | |||||||
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0751 | Diagnosis Condition Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, when vehicle is driven with D1 range or M1 (1st gear). Malfunction Status When gear shift to 1st is requested by TCM, 3rd gear detected Malfunction Time Malfunction status continues for 0.6 sec. or more Other 2 trip detection logic | Shift solenoid valve S1 Shift solenoid valve SL4 Valve body assembly Torque converter assembly Automatic transaxle assembly (clutch, brake, gear, etc.) |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
This DTC indicates a "stuck OFF" malfunction of shift solenoid valve S1.
The TCM commands gear shifts by turning the shift solenoid valves ON/OFF. When the gear position commanded by the TCM and the actual gear position are not the same, the TCM illuminates the MIL and stores the DTC.
Based on signals from the transmission revolution sensors (NT, NC3 and NC), the actual gear is detected.
If the detected gear is different than the commanded gear, the TCM detects related mechanical problems in the shift solenoid valves, valve body and automatic transaxle assembly.
HINT
Actual gear when a malfunction occurs in shift solenoid valve S1 (without fail-safe control)
| TCM commanded gear | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th |
|---|---|---|---|---|---|---|---|---|
| Actual gear during S1 stuck ON malfunction | 1st | 2nd | 1st | 4th | 5th | 6th | N* | 8th |
*: Neutral
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0752 | Diagnosis Condition Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D. Malfunction Status When gear shifts to 3rd or 7th are requested by TCM, engine speed overruns (neutral status) Malfunction Time Malfunction status continues for 0.6 sec. or more Other 2 trip detection logic | Shift solenoid valve S1 Shift solenoid valve SLT Shift solenoid valve SL1 Shift solenoid valve SL2 Shift solenoid valve SL3 Shift solenoid valve SL4 Valve body assembly Torque converter assembly Automatic transaxle assembly (clutch, brake, gear, etc) |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
The TCM commands gear shifts by turning the shift solenoid valves on and off. According to the input shaft revolution speed, intermediate (counter) shaft revolution speed and turbine revolution speed, the TCM detects the actual gear (1st, 2nd, 3rd, 4th, 5th, 6th, 7th or 8th gear position). When the gear commanded by the TCM and the actual gear are not the same, the TCM illuminates the MIL and stores the DTC.
Based on signals from the transmission revolution sensors (NT, NC3 and NC), the actual gear is detected.
If the detected gear is different than the commanded gear, the TCM detects related mechanical problems in the shift solenoid valves, valve body and automatic transaxle assembly.
HINT
Actual gear when a malfunction occurs in shift solenoid valve SL2 (without fail-safe control)
| TCM commanded gear | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th |
|---|---|---|---|---|---|---|---|---|
| Actual gear during SL2 stuck ON malfunction | 5th | 5th | 5th | 5th | 5th | 6th | 7th | 8th |
| Actual gear during SL2 stuck OFF malfunction | 1st | 2nd | 3rd | 4th | 1st | N* | N* | N* |
*: Neutral
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0776 | SL2 stuck ON malfunction: Diagnosis Condition Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D. Malfunction Status When gear shifts to 1st to 4th are requested by TCM, actual gear changes to 5th gear Malfunction Time Malfunction status continues for 0.6 sec. or more Other 2 trip detection logic | Shift solenoid valve S1 Shift solenoid valve SLT Shift solenoid valve SL1 Shift solenoid valve SL2 Shift solenoid valve SL3 Shift solenoid valve SL4 Shift solenoid valve SL5 Valve body assembly Torque converter assembly Automatic transaxle assembly (clutch, brake, gear, etc) |
| SL2 stuck OFF malfunction: Diagnosis Condition Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D. Malfunction Status When gear shifts to 5th to 8th are requested by TCM, engine speed overruns (neutral status) Malfunction Time Malfunction status continues for 0.5 sec. or more Other 2 trip detection logic |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
The TCM commands gear shifts by turning the shift solenoid valves on and off. According to the input shaft revolution speed, intermediate (counter) shaft revolution speed and turbine revolution speed, the TCM detects the actual gear (1st, 2nd, 3rd, 4th, 5th, 6th, 7th or 8th gear position). When the gear commanded by the TCM and the actual gear are not the same, the TCM illuminates the MIL and stores the DTC.
Based on the ON-OFF combinations of the shift solenoid valves SL1, SL2, SL3, SL4 and SL5, the TCM performs gear shifts from 1st gear to 8th gear.
If a circuit related to a solenoid valve is open or shorted, the TCM uses the fail-safe function to turn other solenoid valves ON or OFF. If all solenoid valves are malfunctioning, only the mechanical fluid pressure circuit will function and some manual operation will be possible. If an open or short has occurred, the TCM cuts power to the malfunctioning solenoid valve.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0778 | Diagnosis Condition Driving so that gear changes occur Malfunction Status Solenoid valve SL2 circuit is open or shorted Malfunction Time 1 second Other 1 trip detection logic | Harness and connector Transmission wire Shift solenoid valve SL2 TCM |
These DTCs indicate an open or short in the shift solenoid valve SL1, SL2, SL3, SL4 and SL5 circuit. The TCM commands gear shifts by turning the shift solenoid valves ON/OFF.
When there is an open or short circuit in any shift solenoid valve circuit, the TCM detects the problem, illuminates the MIL and stores the DTC. Also, the TCM performs the fail-safe function and turns the other normally functioning shift solenoid valves ON/OFF. In case of an open or short circuit, the TCM stops sending current to the open or short circuited solenoid.
This sensor detects the rotation speed of the counter gear which shows the output speed of transaxle.
Based on the transmission revolution sensor (NC) signal and the transmission revolution sensor (NT and NC3) signal, the TCM controls engine torque and shift timing.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0791 | Diagnosis Condition +B voltage is 8 V or more and transmission revolution sensor (NC) signal malfunction is not detected Malfunction Status Transmission revolution sensor (NC) input voltage is less than 0.1 V, or more than 1.9 V Malfunction Time 2 seconds Other 1 trip detection logic | Transmission revolution sensor (speed sensor NC) Transmission wire TCM |
| P0793 | Diagnosis Condition When the vehicle speed is 25 km/h (15.5 mph) or higher, and +B voltage is 10 V or more. The park/neutral position switch and transmission revolution sensor (NT) are normal. Malfunction Status Transmission revolution sensor (NT) value is less than 300 rpm Malfunction Time 2 seconds Other 1 trip detection logic |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
The NC terminal of the TCM detects a revolution signal from the speed sensor (NC). The TCM calculates gear shifts by comparing the speed sensor (NC) with the speed sensor (NT and NC3).
If the vehicle is being driven at 25 km/h (15.5 mph) or more and the speed sensor (NC) signal sent to the TCM is 300 rpm*1 or less, or if NC terminal voltage is less than 0.1 V or more than 1.9 V, the TCM illuminates the MIL and stores a DTC.
*1: Pulse is not output or is irregularly output.
Based on signals from the transmission revolution sensors (NT, NC3 and NC), the actual gear is detected.
If the detected gear is different than the commanded gear, the TCM detects related mechanical problems in the shift solenoid valves, valve body and automatic transaxle assembly.
HINT
Actual gear when a malfunction occurs in shift solenoid valve SL3 (without fail-safe control)
| TCM commanded gear | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th |
|---|---|---|---|---|---|---|---|---|
| Actual gear during SL3 stuck ON malfunction | 3rd | 3rd | 3rd | 3rd | 7th | 7th | 7th | 7th |
| Actual gear during SL3 stuck OFF malfunction | 1st | 2nd | 1st* | 4th | 5th | 6th | N* | 8th |
*1: Neutral
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0796 | SL3 stuck ON malfunction: Diagnosis Condition Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D. Malfunction Status One of following occurs: (a) When gear shifts to 1st, 2nd or 4th are requested by TCM, actual gear changes to 3rd gear (b) When gear shifts to 5th, 6th, 8th are requested by TCM, actual gear changes to 7th gear Malfunction Time Malfunction status continues for 0.6 sec. or more Other 2 trip detection logic | Shift solenoid valve S1 Shift solenoid valve SLT Shift solenoid valve SL1 Shift solenoid valve SL2 Shift solenoid valve SL3 Shift solenoid valve SL4 Shift solenoid valve SL5 Valve body assembly Torque converter assembly Automatic transaxle assembly (clutch, brake, gear, etc) |
| SL3 stuck OFF malfunction: Diagnosis Condition Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D. Malfunction Status When gear shifts to 3rd or 7th are requested by TCM, engine speed overruns (neutral status) Malfunction Time Malfunction status continues for 0.5 sec. or more Other 2 trip detection logic |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
The TCM commands gear shifts by turning the shift solenoid valves on and off. According to the input shaft revolution speed, intermediate (counter) shaft revolution speed and turbine revolution speed, the TCM detects the actual gear (1st, 2nd, 3rd, 4th, 5th, 6th, 7th or 8th gear position). When the gear commanded by the TCM and the actual gear are not the same, the TCM illuminates the MIL and stores the DTC.
Based on the ON-OFF combinations of the shift solenoid valves SL1, SL2, SL3, SL4 and SL5, the TCM performs gear shifts from 1st gear to 8th gear.
If a circuit related to a solenoid valve is open or shorted, the TCM uses the fail-safe function to turn other solenoid valves ON or OFF. If all solenoid valves are malfunctioning, only the mechanical fluid pressure circuit will function and some manual operation will be possible. If an open or short has occurred, the TCM cuts power to the malfunctioning solenoid valve.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0798 | Diagnosis Condition Driving so that gear changes occur Malfunction Status Solenoid valve SL3 circuit is open or shorted Malfunction Time 1 second Other 1 trip detection logic | Harness and connector Transmission wire Shift solenoid valve SL3 TCM |
These DTCs indicate an open or short in the shift solenoid valve SL1, SL2, SL3, SL4 and SL5 circuit. The TCM commands gear shifts by turning the shift solenoid valves ON/OFF.
When there is an open or short circuit in any shift solenoid valve circuit, the TCM detects the problem, illuminates the MIL and stores the DTC. Also, the TCM performs the fail-safe function and turns the other normally functioning shift solenoid valves ON/OFF. In case of an open or short circuit, the TCM stops sending current to the open or short circuited solenoid.
Based on the ON-OFF combinations of the SL1, SL2, SL3, SL4, SL5, S1 and S2 solenoids, the TCM performs gear shifts from 1st gear to 8th gear. If a circuit related to a solenoid valve is open or shorted, the TCM uses the fail-safe function to turn other solenoid valves ON or OFF. If all solenoid valves are malfunctioning, only the mechanical fluid pressure circuit will function and some manual operation will be possible. If an open or short has occurred, the TCM cuts power to the malfunctioning solenoid valve.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0973 | Diagnosis Condition Driving so that gear changes occur Malfunction Status Solenoid valve S1 circuit is shorted Malfunction Time Malfunction status occurs 2 times per trip Other 1 trip detection logic | Shift solenoid valve S1 Transmission wire Harness and connector TCM |
| P0974 | Diagnosis Condition Driving so that gear changes occur Malfunction Status Solenoid valve S1 circuit is open Malfunction Time Malfunction status occurs 2 times per trip Other 1 trip detection logic | Shift solenoid valve S1 Transmission wire Harness and connector TCM |
These DTCs indicate an open or short in the shift solenoid valve S1 circuit. When there is an open or short circuit in any shift solenoid valve circuit, the TCM detects the problem, illuminates the MIL and stores the DTC. When the shift solenoid valve S1 is ON, if its resistance is 8 ohms or less, the TCM determines there is a short in the shift solenoid valve S1 circuit.
When the shift solenoid valve S1 is OFF, if its resistance is 100 kohms or more, the TCM determines there is an open in the shift solenoid valve S1 circuit.
Based on the ON-OFF combinations of the SL1, SL2, SL3, SL4, SL5, S1 and S2 solenoids, the TCM performs gear shifts from 1st gear to 8th gear. If a circuit related to a solenoid valve is open or shorted, the TCM uses the fail-safe function to turn other solenoid valves ON or OFF. If all solenoid valves are malfunctioning, only the mechanical fluid pressure circuit will function and some manual operation will be possible. If an open or short has occurred, the TCM cuts power to the malfunctioning solenoid valve.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0976 | Diagnosis Condition Driving so that gear changes occur Malfunction Status Solenoid valve S2 circuit is shorted Malfunction Time Malfunction status occurs 2 times per trip Other 1 trip detection logic | Shift solenoid valve S2 Transmission wire Harness and connector TCM |
| P0977 | Diagnosis Condition Driving so that gear changes occur Malfunction Status Solenoid valve S2 circuit is open Malfunction Time Malfunction status occurs 2 times per trip Other 1 trip detection logic | Shift solenoid valve S2 Transmission wire Harness and connector TCM |
These DTCs indicate an open or short in the shift solenoid valve S2 circuit. When there is an open or short circuit in any shift solenoid valve circuit, the TCM detects the problem, illuminates the MIL and stores the DTC. When the shift solenoid valve S2 is ON, if its resistance is 8 ohms or less, the TCM determines there is a short in the shift solenoid valve S2 circuit.
When the shift solenoid valve S2 is OFF, if its resistance is 100 kohms or higher, the TCM determines there is an open in the shift solenoid valve S2 circuit.
Based on signals from the accelerator position sensor and transmission revolution sensors (NT, NC3 and NC), the TCM controls the solenoid valve (SLT) using a predetermined duty ratio*. As a result, the line pressure is adjusted to a pressure that is appropriate for the throttle angle and engine output.
Based on the data received from the transmission revolution sensors (NT, NC3 and NC), the TCM calculates the heat level of the friction material, and detects clutch slippage, etc.
HINT
*: The duty ratio is the ratio of the current ON time (A) to the total of the current ON and OFF time (A + B).
Duty Ratio (%) = A / (A + B) x 100
Scheme 1252
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2714 | Diagnosis Condition Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D. Malfunction Status The transmission revolution sensor (NT) value exceeds the specified speed for each gear. Malfunction Time Malfunction status continues for 0.6 sec. or more Other 2 trip detection logic | Shift solenoid valve S1 Shift solenoid valve SLT Shift solenoid valve SL1 Shift solenoid valve SL2 Shift solenoid valve SL3 Shift solenoid valve SL4 Shift solenoid valve SL5 Valve body assembly Torque converter assembly Automatic transaxle assembly (clutch, brake, gear, etc) |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
The TCM calculates the amount of heat absorbed by the friction material based on the difference in revolution speed (clutch slippage) between the turbine and output shaft. The TCM illuminates the MIL and outputs this DTC when the amount of heat absorption exceeds the specified value.
When the shift solenoid valve SLT remains ON, oil pressure goes down and clutch engagement force decreases.
Note. If driving continues under these conditions, clutches will burn out and the vehicle will no longer be drivable.
Refer to the system description for DTC P2714. Refer to «SYSTEM DESCRIPTION».
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2716 | Diagnosis Condition Engine is running Malfunction Status Solenoid valve SLT circuit is open or shorted Malfunction Time 1 second Other 1 trip detection logic | Harness and connector Transmission wire Shift solenoid valve SLT TCM |
When an open or short in the linear solenoid valve (SLT) circuit is detected, the TCM interprets this as a malfunction. The TCM will turn on the MIL and store the DTC.
The TCM controls the lock-up solenoid using a predetermined duty ratio*, and performs lock-up and flex lock-up control.
HINT
*: The duty ratio is the ratio of the current ON time (A) to the total of the current ON and OFF time (A + B).
Duty Ratio (%) = A / (A + B) x 100
Scheme 1253
The TCM compares the engagement condition of the lock-up clutch with the lock-up schedule in the TCM memory to detect shift solenoid valve SLU, valve body and torque converter mechanical problems.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2757 | Diagnosis Condition The TCM sends a lock-up off request. Malfunction Status The difference between the turbine speed (NT) and the engine speed (NE) is less than 35 rpm. Malfunction Time 4.8 seconds (after lock-up off requested) Other 2 trip detection logic | Shift solenoid valve SLU Valve body assembly Torque converter assembly Automatic transaxle assembly (clutch, brake or gear, etc.) |
| Diagnosis Condition The TCM sends a lock-up on request. Malfunction Status The difference between the turbine speed (NT) and the engine speed (NE) is 70 rpm or more. Malfunction Time 6.5 seconds (after lock-up on requested) Other 2 trip detection logic |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
Torque converter lock-up is controlled by the TCM based on the turbine speed sensor (NT), intermediate shaft speed sensor (NC), engine speed, engine load, engine temperature, vehicle speed, transmission fluid temperature, and gear selection. The TCM determines the lock-up status of the torque converter by comparing the engine speed (NE) to the turbine revolution speed (NT). The TCM calculates the actual transmission gear by comparing turbine revolution speed (NT) to intermediate shaft revolution speed (NC). When conditions are appropriate, the TCM requests "lock-up" by applying control voltage to shift solenoid SLU. When SLU is turned on, it applies pressure to the lock-up relay valve and locks the torque converter.
If the TCM detects no lock-up after lock-up has been requested or if it detects lock-up when it is not requested, the TCM interprets this as a malfunction in shift solenoid valve SLU or lock-up system performance.
The TCM will turn on the MIL and store the DTC.
HINT
Example
When any of the following is met, the system judges it as a malfunction.
- There is a difference in speed between the input side (engine speed) and output side (turbine speed) of the torque converter when the TCM commands lock-up. (Engine speed is at least 70 rpm greater than turbine speed.)
- There is no difference in speed between the input side (engine speed) and output side (turbine speed) of the torque converter when the TCM commands lock-up off. (The difference between engine speed and turbine speed is less than 35 rpm.)
The TCM controls the lock-up solenoid using a predetermined duty ratio*, and performs lock-up and flex lock-up control.
HINT
*: The duty ratio is the ratio of the current ON time (A) to the total of the current ON and OFF time (A + B).
Duty Ratio (%) = A / (A + B) x 100
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2759 | Diagnosis Condition The vehicle is being driven. Malfunction Status There is an open or short circuit in the shift solenoid valve SLU circuit. Malfunction Time 1 second Other 1 trip detection logic | Shift solenoid valve SLU Transmission wire Harness and connector TCM |
When an open or short in a shift solenoid valve SLU circuit is detected, the TCM determines that there is a malfunction. The TCM will illuminate the MIL and store this DTC.
The transmission revolution sensor (NC3) detects the No. 3 clutch (C3) drum rotation speed.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2765 | Diagnosis Condition +B voltage is 8 V or higher, and no transmission revolution sensor (NC3) signal malfunction is detected Malfunction Status Transmission revolution sensor (NC3) output voltage is below 0.1 V or higher than 1.9 V Malfunction Time 4.5 seconds Other 1 trip detection logic | Transmission revolution sensor (NC3) Transmission wire Harness or connector TCM |
| P2767 | Diagnosis Condition With the park/neutral position switch and speed sensor (NC3) in normal condition, the output shaft speed is 1000 rpm or more (when changing to 7th gear at a output shaft speed of 1400 rpm or more) Malfunction Status Transmission revolution sensor (NC3) value is less than 300 rpm Malfunction Time 5 seconds Other 1 trip detection logic | Transmission revolution sensor (NC3) Transmission wire Harness or connector TCM |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
The NT terminal of the TCM detects a pulse signal from the speed sensor (NT). The TCM calculates gear shifts comparing the speed sensor (NT) with the speed sensor (NC and NC3).
If the sensor voltage is below 0.1 V or higher than 1.9 V, the TCM interprets this as a malfunction, illuminates the MIL and stores the DTC.
Also, while the vehicle is operating in 3rd, 4th, 5th, 6th or 7th gear with the shift lever in D, if the input shaft speed is less than 300 rpm*1 although the output shaft speed is more than 1000 rpm*2, the TCM interprets this as a fault, illuminates the MIL and stores the DTC.
*1: A pulse is not output or is irregularly output.
*2: The vehicle speed is 40 km/h (25 mph) or more.
Based on signals from the transmission revolution sensors (NT, NC3 and NC), the actual gear is detected.
If the detected gear is different than the commanded gear, the TCM detects related mechanical problems in the shift solenoid valves, valve body and automatic transaxle assembly.
HINT
Actual gear when a malfunction occurs in shift solenoid valve SL4 (without fail-safe control)
| TCM commanded gear | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th |
|---|---|---|---|---|---|---|---|---|
| Actual gear during SL4 stuck ON malfunction | 4th | 4th | 3th | 4th | 4th | 6th | 6th | 6th |
| Actual gear during SL4 stuck OFF malfunction | 1st | 2nd | 3rd | 1st | 5th | N* | 7th | 8th |
*: Neutral
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2808 | SL4 stuck ON malfunction: Diagnosis Condition Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D. Malfunction Status One of following occurs: (a) When gear shifts to 1st, 2nd or 4th are requested by TCM, actual gear changes to 4th gear (c) When gear shifts to 7th or 8th are requested by TCM, actual gear changes to 6th gear Malfunction Time Malfunction status continues for 0.6 sec. or more Other 2 trip detection logic | Shift solenoid valve S1 Shift solenoid valve SLT Shift solenoid valve SL1 Shift solenoid valve SL2 Shift solenoid valve SL3 Shift solenoid valve SL4 Shift solenoid valve SL5 Valve body assembly Torque converter assembly Automatic transaxle assembly (clutch, brake, gear, etc) |
| SL4 stuck OFF malfunction: Diagnosis Condition Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D. Malfunction Status When gear shifts to 4th or 6th are requested by TCM, engine speed overruns (neutral status) Malfunction Time Malfunction status continues for 0.5 sec. or more Other 2 trip detection logic |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
The TCM commands gear shifts by turning the shift solenoid valves on and off. According to the input shaft revolution speed, intermediate (counter) shaft speed and turbine revolution speed, the TCM detects the actual gear (1st, 2nd, 3rd, 4th, 5th, 6th, 7th or 8th gear position). When the gear commanded by the TCM and the actual gear are not the same, the TCM illuminates the MIL and stores the DTC.
Based on the ON-OFF combinations of the shift solenoid valves SL1, SL2, SL3, SL4 and SL5, the TCM performs gear shifts from 1st gear to 8th gear.
If a circuit related to a solenoid valve is open or shorted, the TCM uses the fail-safe function to turn other solenoid valves ON or OFF. If all solenoid valves are malfunctioning, only the mechanical fluid pressure circuit will function and some manual operation will be possible. If an open or short has occurred, the TCM cuts power to the malfunctioning solenoid valve.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2810 | Diagnosis Condition Driving so that gear changes occur Malfunction Status Solenoid valve SL4 circuit is open or shorted Malfunction Time 1 second Other 1 trip detection logic | Harness and connector Transmission wire Shift solenoid valve SL4 TCM |
These DTCs indicate an open or short in the shift solenoid valve SL1, SL2, SL3, SL4 and SL5 circuit. The TCM commands gear shifts by turning the shift solenoid valves ON/OFF.
When there is an open or short circuit in any shift solenoid valve circuit, the TCM detects the malfunction, illuminates the MIL and stores the DTC. Also, the TCM performs the fail-safe function and turns the other normal shift solenoid valves ON/OFF. In case of an open or short circuit, the TCM stops sending current to the open or short circuited solenoid.
Based on signals from the transmission revolution sensors (NT, NC3 and NC), the actual gear is detected. If the detected gear is different than the commanded gear, the TCM detects related mechanical problems in the shift solenoid valves, valve body and automatic transaxle assembly.
HINT
Gear shift position when a problem occurs in shift solenoid valve SL5 (without fail-safe control)
| TCM commanded gear | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th |
|---|---|---|---|---|---|---|---|---|
| Actual gear position under SL5 stuck ON malfunction | 2nd | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th |
| Actual gear position under SL5 stuck OFF malfunction | 1st | 1st | 3rd | 4th | 5th | 6th | 7th | N* |
*: Neutral
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2817 | SL5 stuck ON malfunction: Diagnosis Condition Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D. Malfunction Status When gear shifts to 1st are requested by the TCM, the actual gear changes to 2nd gear. Malfunction Time Malfunction status continues for 0.6 sec. or more Other 2 trip detection logic | Shift solenoid valve SLT Shift solenoid valve SL1 Shift solenoid valve SL2 Shift solenoid valve SL3 Shift solenoid valve SL4 Shift solenoid valve SL5 Valve body assembly Torque converter assembly Automatic transaxle assembly |
| P2817 | SL5 stuck OFF malfunction: Diagnosis Condition Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever in D. Malfunction Status When gear shifts to 2nd or 8th are requested by the TCM, the engine overruns (neutral status) Malfunction Time Malfunction status continues for 0.5 sec. or more Other 2 trip detection logic | Shift solenoid valve SLT Shift solenoid valve SL1 Shift solenoid valve SL2 Shift solenoid valve SL3 Shift solenoid valve SL4 Shift solenoid valve SL5 Valve body assembly Torque converter assembly Automatic transaxle assembly |
HINT
- The transmission revolution sensor (NT) is also referred to as the turbine speed sensor (NT) or speed sensor (NT).
- The transmission revolution sensor (NC) is also referred to as the intermediate shaft speed sensor (NC) or speed sensor (NC).
- The transmission revolution sensor (NC3) is also referred to as the input speed sensor (NC3) or speed sensor (NC3).
The TCM commands gear shifts by turning the shift solenoid valves on or off. According to the input shaft revolution speed, intermediate (counter) shaft revolution speed and turbine revolution speed, the TCM detects the actual gear position (1st, 2nd, 3rd, 4th, 5th, 6th, 7th or 8th gear position). When the gear position commanded by the TCM and the actual gear position are not the same, the TCM illuminates the MIL and stores the DTC.
Based on the ON-OFF combinations of the shift solenoid valves SL1, SL2, SL3, SL4 and SL5, the TCM performs gear shifts from 1st gear to 8th gear.
If a circuit related to a solenoid valve is open or shorted, the TCM uses the fail-safe function to turn other solenoid valves ON or OFF. If all solenoid valves are malfunctioning, only the mechanical fluid pressure circuit will function and some manual operation will be possible. If an open or short has occurred, the TCM cuts power to the malfunctioning solenoid valve.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2819 | Diagnosis Condition Driving so that gear changes occur Malfunction Status Solenoid valve SL5 circuit is open or shorted Malfunction Time 1 second Other 1 trip detection logic | Harness and connector Transmission wire Shift solenoid valve SL5 TCM |
These DTCs indicate an open or short in the shift solenoid valve SL1, SL2, SL3, SL4 and SL5 circuit. The TCM commands gear shifts by turning the shift solenoid valves ON/OFF.
When there is an open or short circuit in any shift solenoid valve circuit, the TCM detects the problem, illuminates the MIL and stores the DTC. Also, the TCM performs the fail-safe function and turns the other normal shift solenoid valves ON/OFF. In case of an open or short circuit, the TCM stops sending current to the open or short circuited solenoid.
The engine control unit communicates with the TCM using the Controller Area Network (CAN).
If there is a problem in this communication, the TCM sets a DTC.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0100 | Following conditions are met for 1.25 seconds (1 trip detection logic): Engine switch on (IG) Battery voltage is 10.5 V or more No communication between the engine control ECU (ECM) and TCM | Harness and connector ECM TCM |
The transmission control switch detects when the shift lever is moved to M.
Using the transmission control switch, when the shift lever is in M, it is possible to select between 1st and 8th gears (M1 to M8).
Moving the shift lever to "+" once selects the next higher gear, and moving the shift lever to"-" once selects the next lower gear.
Scheme 1254
When the shift lever is in D, operating the "-" side shift paddle switch will cause the transaxle to enter fixed range mode which restricts the highest gear. By operating the shift paddle switches "+" (UP) or "-" (DOWN), the shift range can be changed.
When the vehicle is being operated in D position (fixed range mode), if the vehicle is stopped or the accelerator pedal is kept steady for a certain period of time with the transaxle in the same gear, the vehicle will change back automatically to normal D position operation.
When the shift lever is in M, it is possible to make use of the highest engine speeds by holding the vehicle in a gear*. Gear hold control means that gear shifts will not be performed as long as the paddle switches are not operated in either the "+" (UP), or "-" (DOWN) direction.
HINT
*: If any of the following conditions are met with the shift lever in M, the gear will be changed automatically.
- the vehicle speed has dropped (downshift only)
- the ATF or engine coolant temperature is low
- the engine speed is higher than necessary (upshift only)
Scheme 1255
Scheme 1256
Scheme 1257
Scheme 1258
Scheme 1259
- CHECK HARNESS AND CONNECTOR (SHIFT PADDLE SWITCH CIRCUIT) Disconnect the ECM connector. Turn the engine switch off. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A43-27 (SFTD) - Body ground or other terminals Pull "-" continuously (Down-shift) Below 1 ohms Release 10 kohms or higher A43-38 (SFTU) - Body ground or other terminals Pull "+" continuously (Up-shift) Below 1 ohms Release 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 2 OK --> See step 10
- CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - BODY GROUND) Disconnect the negative (-) terminal cable from the battery. Wait for at least 90 seconds. Remove the steering wheel assembly. Remove the steering column cover. Disconnect the spiral cable connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F98-2 (ECC) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Spiral Cable Sub-assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM) Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A43-27 (SFTD) - F98-7 (SDN) Always Below 1 ohms A43-27 (SFTD) or F98-7 (SDN) - Body ground Always 10 kohms or higher A43-38 (SFTU) - F98-14 (SUP) Always Below 1 ohms A43-38 (SFTU) or F98-14 (SUP) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - SHIFT PADDLE SWITCH) Disconnect the steering pad switch connector from the spiral cable sub-assembly. Measure the resistance according to the value(s) in the table below when the shift paddle switch is moved to each position. Standard Resistance Tester Connection Condition Specified Condition z13-6 (SUP) - z13-7 (ECC) Pull "+" continuously (Up-shift) Below 1 ohms Release 10 kohms or higher z13-12 (SDN) - z13-7 (ECC) Pull "-" continuously (Down-shift) Below 1 ohms Release 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Spiral Cable Sub-assembly) NG --> See step 6 OK: Go to next step
- INSPECT SPIRAL CABLE SUB-ASSEMBLY Inspect the spiral cable sub-assembly. Refer to «INSPECTION [03/2012 - ]». NG --> See step 8 OK --> See step 12
- INSPECT TRANSMISSION SHIFT SWITCH ASSEMBLY (SHIFT PADDLE SWITCH) Disconnect the connector from the transmission shift switch LH and RH. Measure the resistance according to the value(s) in the table below. Standard Resistance TRANSMISSION SHIFT SWITCH LH: Tester Connection Condition Specified Condition C-2 (ECC) - C-1 (SFTD) Pull "-" continuously (Down-shift) Below 1 ohms Release 10 kohms or higher TRANSMISSION SHIFT SWITCH RH: Tester Connection Condition Specified Condition B-3 (SFTU) - B-2 (ECC1) Pull "+" continuously (Up-shift) Below 1 ohms Release 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Shift paddle switch LH) *b Component without harness connected (Shift paddle switch RH) NG --> See step 9 OK: Go to next step
- INSPECT NO. 1 SWITCH WIRE Connect the transmission shift switch LH and RH connector. Disconnect the No. 1 switch wire from steering pad switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A-2 (SFTD) - A-3 (ECC) Pull "-" continuously (Down-shift) Below 1 ohms Release 10 kohms or higher A-1 (SFTU) - A-3 (ECC) Pull "+" continuously (Down-shift) Below 1 ohms Release 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Steering Pad Switch Connector) NG --> See step 11 OK --> REPAIR OR REPLACE STEERING PAD SWITCH ASSEMBLY
- REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to «COMPONENTS [03/2012 - ]»
- REPLACE TRANSMISSION SHIFT SWITCH ASSEMBLY (SHIFT PADDLE SWITCH). Refer to «COMPONENTS [07/2012 - ]»
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [07/2012 - ]»
- REPLACE NO. 1 SWITCH WIRE. Refer to «COMPONENTS [07/2012 - ]»
- CHECK FOR INTERMITTENT PROBLEMS. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [03/2012 - ]»
When the engine switch is turned to ON, voltage from the ECM's MREL terminal is applied to the EFI MAIN relay. This causes the contacts of the EFI MAIN relay to close, which supplies power to terminal +B of the TCM.
Scheme 1260
See also:
• SYSTEM DIAGRAM [03/2012 - ]