B1546

DTC B1546

DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

1) Start engine and operate A/C system.

DTC Troubleshooting


1. A/C refrigerant pressure check
Turn on A/C switch and operate A/C compressor.
Check "Refrigerant Pressure" using "Data list" mode on SUZUKI scan tool. Scan Tool Testing and Procedures
Is pressure over 0.34 Mpa?
YES
Go to Step 2.
NO
Charge refrigerant and recheck DTC. Service and Repair
2. A/C refrigerant pressure sensor check
Check A/C refrigerant pressure sensor. Testing and Inspection
Is it in good condition?
YES
Go to Step 3.
NO
Replace A/C refrigerant pressure sensor. Service and Repair
3. Outside air temperature sensor check
Check outside air temperature sensor. Outside Air Temperature Sensor
Is it in good condition?
YES
Go to Step 4.
NO
Replace outside air temperature sensor. Outside Air Temperature Sensor Removal and Installation
4. A/C system check
Check A/C system. A/C System Performance Inspection
Is it in good condition?
YES
Replace HVAC control module and recheck DTC. HVAC Control Module Removal and Installation
NO
Perform Trouble Diagnosis for Abnormal Pressure Trouble Diagnosis for Abnormal Pressure
and recheck DTC.