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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 B1550-H/B1550-L: Lost Communication between HVAC Control Module and Auto A/C Panel >> DTC Detecting Condition and Trouble Area
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DTC Detecting Condition and Trouble Area

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 DETECTING CONDITION AND TROUBLE AREA CHART

DTC detecting condition Trouble area
B1550: Lost Communication between HVAC Control Module and Auto A/C Panel 
Between HVAC control module and auto A/C panel communication signal voltage is higher than or lower than specified value for specified time continuously.
  • HVAC control module
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