Toyota Yaris: Manual Transaxle System / Transmission Fluid Temperature Sensor "A" Circuit Short to Battery or Open (P071015)
DESCRIPTION
Refer to DTC P071015.
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| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P071015 | Transmission Fluid Temperature Sensor "A" Circuit Short to Battery or Open | Manual transaxle oil temperature sensor (temperature sensor) output voltage exceeds 4.9 V (circuit open or shorted) for 5 seconds or more. (1-trip detection logic |
| Does not come on | DTC stored | SAE Code: P0713 |
HINT:
When this DTC is output, check the manual transaxle oil temperature sensor (temperature sensor) in the Data List. Enter the following menus: Powertrain / Engine / Data List / M/T Oil Temperature.
| DTC No. | M/T Oil Temperature | Malfunction |
|---|---|---|
| P071015 | -40°C (-40°F) |
|
If the Data List values are normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.
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MONITOR DESCRIPTION
The ECM calculates the temperature of the MT fluid based on the voltage output by the manual transaxle oil temperature sensor (temperature sensor). If the output voltage of the manual transaxle oil temperature sensor (temperature sensor) is outside the normal range, there may be a malfunction in the manual transaxle oil temperature sensor (temperature sensor), or an open or short in the circuit. In that case, the ECM will illuminate the MIL and store a DTC.
CONFIRMATION DRIVING PATTERN
HINT:
After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for at least 30 seconds.
- Turn the ignition switch to ON and wait for 3 seconds or more.
- Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Input the DTC: P071015.
-
Check the DTC judgment result.
GTS Display
Description
NORMAL
- DTC judgment completed
- System normal
ABNORMAL
- DTC judgment completed
- System abnormal
INCOMPLETE
- DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
N/A
- Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.
WIRING DIAGRAM
Refer to DTC P071011.
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PROCEDURE
| 1. | CHECK TERMINAL VOLTAGE (POWER SOURCE OF MANUAL TRANSAXLE OIL TEMPERATURE SENSOR (TEMPERATURE SENSOR)) |
(a) Disconnect the D100 manual transaxle oil temperature sensor (temperature sensor) connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| D100-1 (THO) - Body ground | Ignition switch ON | 0 to 5.5 V |
(d) None.
| NG |
 | GO TO STEP 3 |
|
| 2. | READ VALUE USING GTS (CHECK FOR OPEN IN WIRE HARNESS) |
(a) Disconnect the D100 manual transaxle oil temperature sensor (temperature sensor) connector.
(b) Connect terminals 1 (THO) and 2 (E2) of the manual transaxle oil temperature sensor (temperature sensor) connector on the wire harness side.
| *1 | Manual transaxle oil temperature sensor (Temperature Sensor) | *2 | ECM |
| *a | Front view of wire harness connector (to manual transaxle oil temperature sensor (Temperature Sensor)) | - | - |
(c) According to the display on the GTS, read the Data List.
Powertrain > Engine > Data List| Tester Display |
|---|
| M/T Oil Temperature |
(d) None.
| Result | Proceed to |
|---|---|
| The value of M/T Oil Temperature is higher than 135°C (275°F) | OK |
| None of the above conditions are met | NG |
| OK |
 | REPLACE MANUAL TRANSAXLE OIL TEMPERATURE SENSOR (TEMPERATURE SENSOR) |
| NG |
 | REPLACE ECM |
| 3. | CHECK HARNESS AND CONNECTOR (MANUAL TRANSAXLE OIL TEMPERATURE SENSOR (TEMPERATURE SENSOR) - ECM) |
(a) Disconnect the D100 manual transaxle oil temperature sensor (temperature sensor) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| D100-1 (THO) - Body ground | Ignition switch OFF | Below 1 V |
(c) None.
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR (MANUAL TRANSAXLE OIL TEMPERATURE SENSOR (TEMPERATURE SENSOR) - ECM) |
|
| 4. | CHECK HARNESS AND CONNECTOR (MANUAL TRANSAXLE OIL TEMPERATURE SENSOR (TEMPERATURE SENSOR) - ECM) |
(a) Disconnect the D104 ECM connector.
(b) Disconnect the D100 manual transaxle oil temperature sensor (temperature sensor) sensor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| D100-1 (THO) - D104-104 (THOM) | Always | Below 1 Ω |
| D100-2 (E2) - D104-126 (ETHM) | Always | Below 1 Ω |
| D100-2 (E2) or D104-126 (ETHM) - Other terminals | Always | 10 kΩ or higher |
(d) Connect the D100 manual transaxle oil temperature sensor (temperature sensor) connector.
(e) Connect the D104 ECM connector.
| OK |
 | REPLACE ECM |
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR (MANUAL TRANSAXLE OIL TEMPERATURE SENSOR (TEMPERATURE SENSOR) - ECM) |
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