Measuring the ATF(Automatic Transaxle Fluid) temperature with a thermistor, use the signal as hydraulic control information when detecting damper clutch working condition, variable control with oil temperature and shifting.
When the signal voltage from an oil temperature is lower than 0.49V for 1 second, this code will set.
Item | Detecting Condition & Fail Safe | Possible cause |
DTC Strategy | ● Voltage monitering | ● Oil temperature sensor circuit ● Oil temperature sensor component |
Enable Conditions | ● - | |
Threshold value | ● Output signal ≤ 0.49V | |
Diagnostic Time | ● for 1 second | |
Fail Safe | ● No learning, No INTELLIGENT-SHIFT until IG KEY OFF and set the oil termperature 80°C. |
Many malfunctions in the electrical system may be caused from poor harness and terminals. These faults can be caused by interference from other electrical systems and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
▶ Repair as necessary and go to "Verification vehicle Repair" procedure.
▶ Go to the next procedure.
Power Supply Circiut Inspection
IG KEY ON, ENG OFF
Oil temperature sensor: Disconnect
Measure voltage between terminal 1 of oil temperature sensor connector and chassis ground
Specification : 4.5V~5.5V
Is voltage display near the specified value?
▶ Go to the "Component Inspection".
▶ Proceed next inspection procedure.
Sensor signal open circuit inspection
IG KEY OFF, ENG OFF
Oil temperature sensor connector and ECM(or PCM) connector: Disconnect
Specification : Approx. 1Ω below.
Is resistance display near the specified value?
▶ Proceed next inspection procedure
▶ Repair open circuit between the terminal 1 of the oil temperature sensor connector and the terminal 14(or 26) of the ECM(or PCM) connector.
Sensor signal short circuit inspection
IG KEY OFF, ENG OFF
Oil temperature sensor connector and ECM(or PCM) connector: Disconnect
Measure resistance between terminal 1 of oil temperature sensor harness connector and chassis ground .
Specification : Approx. ∞Ω
Is resistance display near the specified value?
▶ Go to the "Component inspection".
▶ Repair short circuit between the terminal 1 of the oil temperature sensor connector and chassis ground.
IG KEY OFF, ENG OFF
Oil temperature sensor connector : Disconnect
Measure resistance between terminal 1 and 2 of oil temperature sensor harness connector.
Specification : Resistance specification for temperature
Is resistance display near the specified value?
▶ Oil temperature sensor OK
▶ Replace the oil temperature sensor.
(The above value is just for reference. The actual value may differ from it according to various engine condition. )
Temp.(°C) | Resistance(kΩ) | Temp.(°C) | Resistance(kΩ) |
-40 | 139.5 | 80 | 1.08 |
-20 | 47.7 | 100 | 0.63 ± 0.06 |
0 | 18.6 ± 1.86 | 120 | 0.38 |
20 | 8.1 | 140 | 0.25 |
40 | 3.8 | 160 | 0.16 |
60 | 1.98 |
