LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2012 >> SX4 Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System - Auto A/C >> Diagnostic Information and Procedures >> DTC B1571: Combination Meter Spec Signal Failure >> DTC Troubleshooting
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Troubleshooting

B1571: SYMPTOM TROUBLESHOOTING REFERENCE CHART

Step Action YES NO
1  Was "Air Conditioning System Check" performed?  Go to Step 2. Go to AIR CONDITIONING SYSTEM CHECK: AUTO A/C .
2  Scan tool data check 
  1. Connect scan tool to DLC with ignition switch turned OFF position.
  2. Ignition switch turned ON and select "Scan Tool Data" mode.
  3. Check "Meter Spec" displayed on scan tool.

Is value of combination meter spec signal within specified ranges displayed in "Scan Tool Data"? 		 Substitute a known-good HVAC control module and recheck. Go to step 3.
3  Scan tool data check 
  1. Check "Meter Spec" displayed on scan tool.

Is "-" displayed on scan tool data? 		 Check CAN communication circuit referring to DTC Check . Substitute a known-good BCM and recheck.
scientia non olet · About LEMON Manuals