| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Memory |
|---|---|---|---|---|---|
| C13F21C | 4WD/AWD Rear Differential Oil Temperature Sensor Circuit Voltage Out of Range | ·
Even though the calorific value of the rear differential carrier assembly estimated from driving conditions is high enough, the temperature of the temperature sensor remains at approximately -40°C for 1 second or more ·
Even though the engine coolant temperature received from the ECM is below 35°C, the engine switch was turned from off on (IG) 2 times with the temperature of the temperature sensor fixed at approximately 80°C or more (shorted) ·
The temperature sensor power source voltage is 0.2 V or less for 1 second or more ·
The temperature sensor signal circuit voltage is 4.5 V or higher for 1 second or more |
·
Wire harness or connector ·
Temperature sensor ·
4WD ECU assembly |
Displayed | Yes |
| Vehicle Condition | |||||
|---|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | Pattern 4 | ||
| Diagnosis Condition | The calorific value of the rear differential carrier assembly estimated from driving conditions is high enough | ○ | - | - | - |
| The engine coolant temperature received from the ECM is below 35°C | - | ○ | - | - | |
| Malfunction Status | The temperature of the temperature sensor remains at approximately -40°C | ○ | - | - | - |
| The temperature of the temperature sensor fixed at approximately 80°C or more (shorted) | - | ○ | - | - | |
| The temperature sensor power source voltage is 0.2 V or less | - | - | ○ | - | |
| The temperature sensor signal circuit voltage is 4.5 V or higher | - | - | - | ○ | |
| Detection Time | 1 second or more | - | 1 second or more | 1 second or more | |
| Number of Trips | 1 trip | 2 trip | 1 trip | 1 trip | |
DTC will be output when conditions for either of the patterns in the table above are met.
When the 4WD ECU assembly is replaced, before removing the 4WD ECU assembly, it is necessary to perform ECU Data Save to save the original 4WD ECU assembly information.
After performing repairs, clear the DTCs and check that the DTCs are not output again.
Turn the engine switch off.
Disconnect the N3 4WD ECU assembly connector.
Disconnect the O9 temperature sensor connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N3-13 (THR+) - O9-1 (THR+) | Always | Below 1 Ω |
| N3-21 (THR-) - O9-2 (THR-) | Always | Below 1 Ω |
| N3-13 (THR+) or O9-1 (THR+) - Body ground and other terminals | Always | 10 kΩ or higher |
| N3-21 (THR-) or O9-2 (THR-) - Body ground and other terminals | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Turn the engine switch off.
Disconnect the O9 temperature sensor connector.
| *a | Component without harness connected
(Temperature Sensor) |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 1 (THR+) - 2 (THR-) | 20°C (68°F) | 0.9 to 30 kΩ |
| Proceed to |
|---|
| OK |
| NG |
OK
NG