DESCRIPTION
The Park/Neutral Position (PNP) switch detects the shift lever position and sends signals to the ECM.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0705 | One of the following conditions is met: (A) Any 2 or more of the following conditions are met (2 trip detection logic) P, N, or NSW input signal is ON R input signal is ON D input signal is ON 3 input signal is ON 2 input signal is ON (B) All of the signals are OFF simultaneously (2 trip detection logic) P input signal is OFF N input signal is OFF NSW input signal is OFF R input signal is OFF D input signal is OFF 3 input signal is OFF 2 input signal is OFF (C) Both 1 and 2 are met (2 trip detection logic) 1. One of the following conditions is met P input signal is ON N input signal is ON NSW input signal is ON R input signal is ON 3 input signal is ON 2. One of the following conditions is met 4 input signal is ON L input signal is ON | Open or short in park/neutral position switch circuit Park/neutral position switch ECM |
MONITOR DESCRIPTION
This DTC indicates a problem with the park/neutral position switch and the wire harness in the park/neutral position switch circuit.
The park/neutral position switch detects the shift lever position and sends a signal to the ECM.
For security, the park/neutral position switch detects the shift lever position so that the engine can be started only when the shift lever is on P or N.
The park/neutral position switch sends a signal to the ECM according to the shift lever position (R, D, 4, 3, 2 or L).
The ECM determines that there is a problem with the switch or related parts if it receives more than 1 position signal simultaneously. The ECM will illuminate the MIL and store the DTC.
The ATF (Automatic Transmission Fluid) temperature sensor converts the fluid temperature into a resistance value which is input into the ECM.
| 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 15°C (59°F) or more at engine start (b) Soak time is 5 hours or more (c) After normal driving for over 10 min. and 5 km (3 miles) 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 -10°C (14°F) or more at engine start (b) After normal driving for over 18 min. and 20 sec. and 9 km (6 miles) 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 35°C (95°F) at engine start (b) ATF temperature is 110°C (230°F) or more when engine coolant temperature reaches 60°C (140°F) | Open or short in ATF temperature sensor circuit ATF temperature sensor ECM |
*: except Mexico Models
The ATF temperature sensor converts the ATF temperature to an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature and detects an open or short in the ATF temperature sensor circuit or a fault in the ATF temperature sensor.
After driving the vehicle for a certain period of time, the ATF temperature should increase. If the ATF temperature is below 20°C (68°F), or 110°C (230°F) or more after driving the vehicle for a certain period of time, the ECM interprets this as a fault, turns on the MIL, and stores the DTC.
The ATF (Automatic Transmission Fluid) temperature sensor converts the ATF temperature into a resistance value which is input into the ECM.
The ECM applies a voltage to the temperature sensor through ECM terminal THO1.
The sensor resistance changes with the ATF temperature.
One terminal of the sensor is grounded so that the sensor resistance and voltage decrease as the temperature becomes higher.
The ECM calculates the ATF 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 ATF temperature sensor ECM |
| P0713 | ATF temperature sensor resistance is higher than 156 kohms for 0.5 sec. or more and either condition is met (1-trip detection logic): (A) 600 sec. or more have elapsed after the engine start when the engine coolant temperature or intake air temperature is -29.375°C (-20.875°F) or less. (B) 10 sec. or more have elapsed after the engine start when the engine coolant temperature and intake air temperature are higher than -29.375°C (-20.875°F). | Open in ATF temperature sensor circuit ATF temperature sensor ECM |
The ATF temperature sensor converts the ATF temperature to an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature and detects an open or short in the ATF temperature sensor circuit. If the resistance value of the ATF temperature sensor is less than 79 ohms*1 or more than 156 kohms*2, the ECM interprets this as a fault in the ATF temperature sensor or wiring. The ECM will illuminate the MIL and store the DTC.
HINT
- *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.
- The ATF temperature can be checked on the Techstream display.
This sensor detects the rotation speed of the turbine, which shows the input revolution of the transaxle. By comparing the input speed signal (NT) with the counter gear speed sensor signal (NC), the ECM detects the shift timing of the gears and controls the engine torque and hydraulic pressure according to various conditions. As a result, smooth gear shifting is achieved.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0717 | ECM detects conditions (a), (b) and (c) continuously for 5 sec. or more (1 trip detection logic): (a) Vehicle speed: 50 km/h (31 mph) or more (b) Park/neutral position switch NSW, R and L signals are OFF (c) Speed sensor NT: Less than 300 rpm | Open or short in speed sensor NT circuit Speed sensor NT ECM |
This DTC indicates that a pulse is not output from the speed sensor NT (input speed sensor) or is output only a little. The NT terminal of the ECM detects the pulse signal from the speed sensor (NT) (input RPM). The ECM compares the output of the input speed sensor (NT) with the output of the intermediate shaft speed sensor (NC) and outputs a gearshift signal based on the results.
While the vehicle is operating in the 2nd, 3rd, 4th or 5th gear position with the shift lever on D, if the input shaft revolution is less than 300 rpm*1 and the output shaft revolution is 1, 000 rpm or more*2, the ECM detects the trouble, illuminates the MIL and stores the DTC.
HINT
*1: Pulse is not output or is irregularly output.
*2: The vehicle speed is approximately 50 km/h (31 mph) or more.
The purpose of this circuit is to prevent the engine from stalling while driving in the lock-up condition when the brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signal to the ECM. Then the ECM cancels the operation of the lock-up clutch while braking is in progress.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0724 | Stop light switch remains ON even when vehicle is driven in GO (30 km/h (18.65 mph) or more) and STOP (less than 3 km/h (1.86 mph)) pattern 5 times (2 trip detection logic) | Short in stop light switch signal circuit Stop light switch ECM |
This DTC indicates that the stop light switch remains ON. When the stop light switch remains ON during GO and STOP driving, the ECM interprets this as a fault in the stop light switch. Then the MIL illuminates and the ECM stores the DTC. The vehicle must GO (30 km/h (18.65 mph) or more) and STOP (less than 3 km/h (1.86 mph)) 5 times for 2 driving cycles in order for the DTC to be output.
The ECM uses the signals from the throttle position sensor, air-flow meter, turbine (input) speed sensor, intermediate (counter) shaft speed sensor and crankshaft position sensor to monitor the engagement condition of the lock-up clutch.
Then the ECM compares the engagement condition of the lock-up clutch with the lock-up schedule in the ECM memory to detect mechanical problems of the shift solenoid valve DSL, valve body and torque converter assembly.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0741 | Lock-up does not occur when driving in the lock-up range (normal driving at 80 km/h [50 mph]), or lock up remains ON in the lock-up OFF range (2 trip detection logic) | Shift solenoid valve DSL remains open or closed Valve body is blocked Shift solenoid valve DSL Torque converter assembly Automatic transaxle (clutch, brake, gear, etc.) Line pressure is too low ECM |
Torque converter lock-up is controlled by the ECM based on the speed sensor (NT), speed sensor (NC), engine rpm, engine load, engine temperature, vehicle speed, transmission temperature, and gear selection. The ECM determines the lock-up status of the torque converter by comparing the engine rpm (NE) to the input turbine rpm (NT). The ECM calculates the actual transmission gear by comparing input turbine rpm (NT) to counter gear rpm (NC). When conditions are appropriate, the ECM requests "lock-up" by applying control voltage to the shift solenoid DSL. When the DSL is turned on, it applies pressure to the lock-up relay valve and locks the torque converter assembly.
If the ECM detects no lock-up after lock-up has been requested or if it detects lock-up when it is not requested, the ECM interprets this as a fault in the shift solenoid valve DSL or lock-up system performance. The ECM will turn on the MIL and store the DTC.
HINT
Example
When either of the following is met, the system judges it as a malfunction.
- There is a difference in rotation between the input side (engine speed) and output side (input turbine speed) of the torque converter when the ECM commands lock-up. (Engine speed is at least 100 rpm greater than input turbine speed.)
- There is no difference in rotation between the input side (engine speed) and output side (input turbine speed) of the torque converter when the ECM commands lock-up off. (The difference between engine speed and input turbine speed is less than 35 rpm.)
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic transaxle (clutch, brake, gear, etc.).
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0746 | Gear required by the ECM does not match the actual gear when driving (2 trip detection logic) | Shift solenoid valve SL1 remains open or closed Valve body is blocked Shift solenoid valve SL1 Automatic transaxle (clutch, brake, gear, etc.) ECM |
The ECM commands gear shifts by turning the shift solenoid valves ON/OFF. According to the input shaft revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual gear position (1st, 2nd, 3rd, 4th or 5th gear position). When the gear position commanded by the ECM and the actual gear position are not the same, the ECM illuminates the MIL and store the DTC.
HINT
Example
When either condition (a) or (b) is met, the ECM detects a malfunction.
(a) The ECM commands the 1st gear, but the actual gear is 2nd.
(b) The ECM commands the 2nd gear, but the actual gear is 1st.
Shifting from 1st to 5th is performed in combination with the ON and OFF operation of the shift solenoid valves SL1, SL2, SL3, S4 and SR, which are controlled by the ECM. If an open or short circuit occurs in any of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated safely.Refer to FAIL-SAFE CHART .
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0748 | Duty cycle to shift solenoid valve SL1 is 100% (1 trip detection logic) | Open or short in shift solenoid valve SL1 circuit Shift solenoid valve SL1 ECM |
The ECM 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 ECM detects the problem and illuminates the MIL and stores the DTC. And the ECM performs the fail-safe function and turns the other normal shift solenoid valves ON/OFF. In case of an open or short circuit, the ECM stops sending current to the circuit.Refer to FAIL-SAFE CHART .
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic transaxle (clutch, brake, gear, etc.).
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0766 | Gear required by the ECM does not match the actual gear when driving (2 trip detection logic) | Shift solenoid valve S4 remains open or closed Valve body is blocked Shift solenoid valve S4 Automatic transaxle (clutch, brake, gear, etc.) ECM |
The ECM commands gear shifts by turning the shift solenoid valves ON/OFF. According to the input shaft revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual gear position (1st, 2nd, 3rd, 4th or 5th gear position). When the gear position commanded by the ECM and the actual gear position are not the same, the ECM illuminates the MIL and stores the DTC.
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic transaxle (clutch, brake, gear, etc.).
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0771 | Gear required by the ECM does not match the actual gear when driving (2 trip detection logic) | Shift solenoid valve SR remains open or closed Valve body is blocked Shift solenoid valve SR Automatic transaxle (clutch, brake, gear, etc.) |
The ECM commands gear shifts by turning the shift solenoid valves ON/OFF. According to the input shaft revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual gear position (1st, 2nd, 3rd, 4th or 5th gear position). When the gear position commanded by the ECM and the actual gear position are not the same, the ECM illuminates the MIL and stores the DTC.
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic transaxle (clutch, brake, gear, etc.).
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0776 | Gear required by the ECM does not match the actual gear when driving (2 trip detection logic) | Shift solenoid valve SL2 remains open or closed Valve body is blocked Shift solenoid valve SL2 Automatic transaxle (clutch, brake, gear, etc.) ECM |
The ECM commands gear shifts by turning the shift solenoid valves ON/OFF. According to the input shaft revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual gear position (1st, 2nd, 3rd, 4th or 5th gear position). When the gear position commanded by the ECM and the actual gear position are not the same, the ECM illuminates the MIL and stores the DTC.
Shifting from 1st to 5th is performed in combination with the ON and OFF operation of the shift solenoid valves SL1, SL2, SL3, S4 and SR, which are controlled by the ECM. If an open or short circuit occurs in any of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated safely.Refer to FAIL-SAFE CHART .
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0778 | ECM checks for an open or short circuit in shift solenoid valves SL2 (1 trip detection logic) Hybrid IC for solenoid indicates fail | Open or short in shift solenoid valve SL2 circuit Shift solenoid valve SL2 ECM |
The ECM 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 ECM detects the problem and illuminates the MIL and stores the DTC. And the ECM performs the fail-safe function and turns the other normal shift solenoid valves ON/OFF. In case of an open or short circuit, the ECM stops sending current to the circuit.Refer to FAIL-SAFE CHART .
This sensor detects the rotation speed of the counter gear. By comparing the counter gear speed signal (NC) with the direct clutch speed sensor signal (NT), the ECM detects the shift timing of the gears and approximately controls the engine torque and hydraulic pressure according to various conditions. Thus smooth gear shifting is performed.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0793 | ECM detects conditions (a), (b) and (c) continuously for 2 sec. or more (1 trip detection logic): (a) Vehicle speed: 25 km/h (16 mph) or more (b) Park/neutral position switch NSW is OFF (c) Speed sensor NC: Less than 300 rpm | Open or short in speed sensor NC circuit Speed sensor NC ECM |
The NC terminal of the ECM detects revolution signals from speed sensor NC (counter gear rpm). The ECM calculates gear shifts by comparing speed sensor NT with speed sensor NC.
While the vehicle is operating in the 2nd, 3rd, 4th or 5th gear position with the shift lever on D, if the counter gear revolution is less than 300 rpm*1 and the output shaft revolution is more than 1, 000 rpm*2, the ECM detects the trouble, illuminates the MIL and stores the DTC.
*1: Pulse is not output or is irregularly output.
*2: The vehicle speed is 25 km/h (16 mph) or more.
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic transaxle (clutch, brake, gear, etc.).
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0796 | Gear required by the ECM does not match the actual gear when driving (2 trip detection logic) | Shift solenoid valve SL3 remains open or closed Valve body is blocked Automatic transaxle (clutch, brake, gear, etc.) |
The ECM commands gear shifts by turning the shift solenoid valves ON/OFF. According to the input shaft revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual gear position (1st, 2nd, 3rd, 4th or 5th gear position). When the gear position commanded by the ECM and the actual gear position are not the same, the ECM illuminates the MIL and stores the DTC.
Shifting from 1st to 5th is performed in combination with the ON and OFF operation of the shift solenoid valves SL1, SL2, SL3, S4 or SR which are controlled by the ECM. If an open or short circuit occurs in any of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated safely.Refer to FAIL-SAFE CHART .
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0798 | The ECM checks for an open or short in the shift solenoid valve SL3 circuit while driving and shifting gears (1 trip detection logic) | Open or short in shift solenoid valve SL3 circuit Shift solenoid valve SL3 ECM |
The ECM 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 ECM detects the problem and illuminates the MIL and stores the DTC. And the ECM performs the fail-safe function and turns the other normal shift solenoid valves ON/OFF. In case of an open or short circuit, the ECM stops sending current to the circuit.Refer to FAIL-SAFE CHART .
Shifting from 1st to 5th is performed in combination with the ON and OFF operation of the shift solenoid valves SL1, SL2, SL3, S4 or SR, which are controlled by the ECM. If an open or short circuit occurs in any of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated safely.Refer to FAIL-SAFE CHART .
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0982 | ECM detects short in solenoid valve S4 circuit 2 times when solenoid valve S4 is operated (1 trip detection logic) | Short in shift solenoid valve S4 circuit Shift solenoid valve S4 ECM |
| P0983 | ECM detects open in solenoid valve S4 circuit 2 times when solenoid valve S4 is not operated (1 trip detection logic) | Open in shift solenoid valve S4 circuit Shift solenoid valve S4 ECM |
This DTC indicates an open or short in the shift solenoid valve S4 circuit. The ECM 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 ECM detects the problem, illuminates the MIL and stores the DTC. Also, the ECM performs the fail-safe function and turns the other normal shift solenoid valves ON/OFF. In case of an open or short circuit, the ECM stops sending current to the circuit.Refer to FAIL-SAFE CHART .
Shifting from 1st to 5th is performed in combination with the ON and OFF operation of the shift solenoid valves SL1, SL2, SL3, S4 or SR, which are controlled by the ECM. If an open or short circuit occurs in any of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated safely.Refer to FAIL-SAFE CHART .
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0985 | ECM detects short in solenoid valve SR circuit 2 times when solenoid valve SR is operated (1 trip detection logic) | Short in shift solenoid valve SR circuit Shift solenoid valve SR ECM |
| P0986 | ECM detects open in solenoid valve SR circuit 2 times when solenoid valve SR is not operated (1 trip detection logic) | Open in shift solenoid valve SR circuit Shift solenoid valve SR ECM |
The ECM 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 ECM detects the problem and illuminates the MIL and stores the DTC. And the ECM performs the fail-safe function and turns the other normal shift solenoid valves ON/OFF. In case of an open or short circuit, the ECM stops sending current to the circuit.Refer to FAIL-SAFE CHART .
Shift solenoid valve SLT controls the transmission line pressure for smooth transmission operation based on signals from the throttle position sensor and vehicle speed sensor. The ECM adjusts the current to shift solenoid valve SLT to control the hydraulic line pressure coming from the primary regulator valve. Appropriate line pressure assures smooth shifting with varying engine outputs.
Scheme 1959
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2714 | ECM detects malfunction on SLT (ON side) according to difference in revolutions of turbine (input), intermediate and output shaft (2 trip detection logic) | Shift solenoid valve SLT remains closed Valve body is blocked Torque converter assembly Automatic transaxle (clutch, brake, gear, etc.) ECM |
In any forward position, when the difference between the revolutions of the turbine, intermediate and output shaft exceeds the specified value (varies with intermediate, output speed) determined by the ECM, the ECM illuminates the MIL and stores the DTC. When shift solenoid valve SLT remains on, the oil pressure goes down and the clutch engagement force decreases.
Note. If you continue driving under these conditions, the clutch will burn out and the vehicle will no longer be drivable.
Refer to DTC P2714.Refer to DESCRIPTION .
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2716 | Duty cycle to shift solenoid valve SLT is 100% (1 trip detection logic) | Open or short in shift solenoid valve SLT circuit Shift solenoid valve SLT ECM |
When an open or short in the shift solenoid valve SLT circuit is detected, the ECM interprets this as a fault. The ECM will illuminate the MIL and store the DTC.
The shift solenoid valve DSL is turned ON and OFF by signals from the ECM to control the hydraulic pressure acting on the lock-up relay valve, which then controls operation of the lock-up clutch.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P2769 | ECM detects short in shift solenoid valve DSL circuit when shift solenoid valve DSL is operated (2 trip detection logic) | Short in shift solenoid valve DSL circuit Shift solenoid valve DSL ECM |
| P2770 | ECM detects open in shift solenoid valve DSL circuit when shift solenoid valve DSL is not operated (2 trip detection logic) | Open in shift solenoid valve DSL circuit Shift solenoid valve DSL ECM |
Fail-safe function
If the ECM detects a malfunction, it turns the shift solenoid valve DSL OFF.
Torque converter lock-up is controlled by the ECM based on engine rpm, engine load, engine temperature, vehicle speed, transmission temperature, and shift position selection. The ECM determines the lock-up status of the torque converter by comparing the engine rpm (NE) to the input rpm (NT). The ECM calculates the actual transmission gear by comparing the input rpm (NT) to the output rpm (SP2). When conditions are appropriate, the ECM requests "lock-up" by applying control voltage to the shift solenoid valve DSL. When the shift solenoid valve DSL is opened, the shift solenoid valve DSL applies pressure to the lock-up relay valve and locks the torque converter assembly. If the ECM detects an open or short in the shift solenoid valve DSL circuit, the ECM interprets this as a fault in the shift solenoid valve DSL or its circuit. The ECM will illuminate the MIL and store a DTC.