DTC P0112 / P0113
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detection condition | Trouble area |
|---|---|
|
P0112: Intake Air Temperature Sensor 1 Circuit Low Measured voltage of IAT sensor-1 signal circuit is lower than specified value. (3 D/C detection logic) |
•IAT sensor-1 and/or its circuit
•ECM |
|
P0113: Intake Air Temperature Sensor 1 Circuit High Measured voltage of IAT sensor-1 signal circuit is higher than specified value. (3 D/C detection logic) |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | A3: | MAF sensor ground circuit | 2. | MAF sensor |
| A1: | MAF sensor power supply circuit | B1: | IAT sensor-1 signal circuit | 3. | IAT sensor-1 |
| A2: | MAF sensor signal circuit | 1. | ECM |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
IAT sensor-1 signal circuit and MAF sensor ground check
1)When ignition is “OFF”, disconnect “E01” connector from ECM and MAF sensor with IAT sensor-1 connector.
2)Check for proper terminal connection to “E01” connector and MAF sensor with IAT sensor-1 connector.
3)If connections are OK, check the following points.
•Resistance of “B1” and “A3” circuits: less than 1 Ω
•Resistance between each of “B1” and “A3” circuits and ground: infinity •Resistance between “B1” circuit terminal and other terminal at MAF sensor with IAT sensor-1 connector: infinity •Resistance between “A3” circuit terminal and other terminal at MAF sensor with IAT sensor-1 connector: infinity •Voltage of “B1” and “A3” circuits: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
MAF sensor with IAT sensor-1 replacement
1)Replace MAF sensor with IAT sensor-1.
2)Clear DTC.
3)Recheck DTC.
Is DTC P0112 and/or P0113 still detected?
|
Replace ECM and recheck DTC.
|
End.
|