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Home >> Suzuki >> 2013 >> Kizashi Base, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 75 (Air Conditioning System) >> Diagnostic Information and Procedures >> DTC B1502-L: Inside Air Temperature Sensor and/or Its Circuit Malfunction >> DTC Troubleshooting
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DTC Troubleshooting

WARNING: This page is about a different car, the 2010 Suzuki Kizashi. However, it is still accessible from the selected car via links, so may be relevant.
DTC TROUBLESHOOTING CHART

Step Action YES NO
1  Scan tool parameter check 
  1. Check "Cabin Temperature" using "Data list" mode on SUZUKI scan tool, see Scan Tool Data .

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, see Scan Tool Data .

Is temperature over 87.5 °C (189.5 °F)? 		 Go to Step 3. Replace inside air temperature sensor, see Inside Air Temperature Sensor Removal and Installation .
3  Inside air temperature sensor signal circuit check 
  1. Disconnect "G20" connector.
  2. Check that resistance between "LT GRN/RED" wire terminal and ground is infinity.

Is it in good condition? 		 Replace HVAC control module and recheck DTC, see HVAC Control Module Removal and Installation . Repair or replace defective wire harness.
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