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Home >> Suzuki >> 2007 >> SX4 Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 149 (Air Conditioning System) >> Diagnostic Information And Procedures >> DTC B1553: Can Communication Circuit Malfunction >> DTC Troubleshooting
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DTC Troubleshooting

WARNING: This page is about a different car, the 2007 Suzuki Grand Vitara and 2006 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
DTC TROUBLESHOOTING CHART

Step Action YES NO
1  DTC check 
  1. Connect scan tool to DLC with ignition switch turned OFF.
  2. Check ECM and BCM for DTC.

Is there DTC(s)? 		 Diagnose affected DTC(s). Go to DTC TABLE . Substitute a known-good HVAC control module and recheck.
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