DTC B1502-L
Precautions: Precautions for Diagnosing Trouble · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
B1502-L: Inside Air Temperature Sensor and/or Its Circuit Malfunction Signal voltage of position sensor in inside air temperature sensor is lower than specified value (0.1 V) for specified time continuously. |
•Inside air temperature sensor circuit
•Inside air temperature sensor •HVAC control module |
| [A]: | HVAC control module connector (View: [a]) | A2. | Ground for sensors circuit | 2. | HVAC control module |
| A1. | Inside air temperature sensor signal circuit | 1. | Inside air temperature sensor |
DTC Confirmation Procedure
1)Start engine and operate A/C system.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Scan tool parameter check
1)Check “Cabin Temperature” using “Data list” mode on SUZUKI scan tool.
Is temperature over 87.5 °C (189.5 °F)?
|
Go to Step 2.
|
Intermittent trouble.
|
| 2 |
Inside air temperature sensor signal circuit check
1)Disconnect inside air temperature sensor connector.
2)Check “Cabin Temperature” using “Data list” mode on SUZUKI scan tool.
Is temperature over 87.5 °C (189.5 °F)?
|
Go to Step 3.
|
Replace inside air temperature sensor.
|
| 3 |
Inside air temperature sensor signal circuit check
1)Disconnect “G20” connector.
2)Check that resistance between “A1” circuit terminal and ground is infinity.
Is check result OK?
|
Replace HVAC control module and recheck DTC.
|
Replace instrument panel harness.
|