DTC B1141 / B1142
Precautions: Precautions for Diagnosing Trouble · Precautions for Control Systems · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
B1141: Outside Air Temperature (Ambient Temperature) Sensor Circuit Open Outside air temperature sensor signal circuit voltage is higher than 4.85 V for specified time continuously. |
•Outside air temperature sensor circuit / connector
•Outside air temperature sensor •BCM |
|
B1142: Outside Air Temperature (Ambient Temperature) Sensor Circuit Short to Ground Outside air temperature sensor signal circuit voltage is lower than 0.15 V for specified time continuously. |
Circuit Diagram
| [A]: | BCM connector (View: [a]) | A2: | Outside air temperature sensor ground circuit | 2. | BCM |
| A1: | Outside air temperature sensor signal circuit | 1. | Outside air temperature sensor |
DTC Confirmation Procedure
1)Set ignition “ON”.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Parameter check
1)Connect SUZUKI scan tool to DLC when ignition is “OFF”.
2)Set ignition “ON”.
3)Check “Outside Air Temp” displayed on SUZUKI scan tool.
Is check result OK?
|
Check for intermittent trouble.
|
Go to Step 2.
|
| 2 |
Outside air temperature sensor circuit check
1)Check that ignition is “OFF”.
2)Disconnect outside air temperature sensor and “E05” connectors.
3)Check for proper terminal connection to outside air temperature sensor and “E05” connectors.
4)If connections are OK, check the following points.
•Resistance of “A1” and “A2” circuits: less than 1 Ω
•Resistance between “A1” circuit and ground: infinity •Resistance between “A1” and “A2” circuit terminals at outside air temperature sensor connector: infinity •Voltage of “A1” and “A2” circuits: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
Outside air temperature sensor check
1)Check outside air temperature sensor.
Is check result OK?
|
Replace BCM and recheck DTC.
|
Replace outside air temperature sensor.
|