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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 B1520: Temperature Selector And/Or Its 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. Turn ignition switch ON and clear DTC referring to DTC CLEARANCE .
  3. Turn ignition switch OFF position.
  4. Turn ignition switch ON and check DTC referring to DTC CHECK .

Is there DTC B1520? 		 Go to Step 2. Intermittent trouble. Check for intermittent referring to INTERMITTENT AND POOR CONNECTION INSPECTION .
2  HVAC control module terminal check 
  1. Remove HVAC control module referring to HVAC CONTROL MODULE REMOVAL AND INSTALLATION .
  2. Check for proper connection of HVAC control module connector at all terminals.

Is it in good condition? 		 Substitute a known-good HVAC control module and recheck. Repair faulty condition.
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