Dtc B1546: A/C Refrigerant Pressure Malfunction - Suzuki Grand Vitara 2011 Manual

Step
10 Position sensor circuit check
1) Check air intake control actuator position sensor circuit
referring to Step 1 to Step 6 and Step 11 to Step 12 of
"DTC B1530: Air Intake Control Actuator (Position
Sensor) and/or Its Circuit Malfunction".
Is it in good condition?
11 Air intake control actuator check
1) Check intake air control actuator referring to "Air Intake
Control Actuator Inspection".
Is it in good condition?

DTC B1546: A/C Refrigerant Pressure Malfunction

DTC Detecting Condition and Trouble Area
Outside temperature is more than specified value. However, refrigerant
pressure is less than specified value.
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and warm up to normal operating temperature.
4) Start A/C system for 1 min. or more.
5) Check DTC.
DTC Troubleshooting
Step
1 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch and clear DTC.
3) Ignition switch turned OFF position.
4) Turn ON ignition switch and check DTC.
Is there DTC B1546?
2 Refrigerant pressure check
1) Connect scan tool to DLC with ignition switch OFF.
2) Ignition switch ON turned ON position.
3) Check refrigerant pressure displayed on scan tool.
Is it 340 kPa or more?
3 A/C system check
1) Confirm that vehicle A/C system condition referring to
"A/C System Performance Inspection".
Is A/C system in good condition?
Action
DTC Detecting Condition
Action
Air Conditioning System:
Yes
Go to Step 11.
HVAC control module
faulty.
Trouble Area
• Refrigerant pressure sensor circuit
• Refrigerant pressure sensor
• Outside air temperature sensor
circuit
• Outside air temperature sensor
• HVAC control module
• ECM
• BCM
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
7B-56
No
Repair circuit.
Air intake control
actuator faulty.
S6JB0A7204023
No
Confirm that vehicle A/C
system condition
referring "A/C System
Performance
Inspection", and
recheck DTC.
Charge refrigerant and
Confirm that vehicle A/C
system condition
referring to "A/C System
Performance
Inspection". And then
recheck DTC.
Repair and/or replace.