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Dtc B1562: Outside Air Temperature Signal Failure; Dtc B1563: A/C Refrigerant Pressure Signal Failure - Suzuki SX4 Service Manual

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DTC B1562: Outside Air Temperature Signal Failure

DTC Detecting Condition and Trouble Area
HVAC control module receives invalid data of outside air temperature signal
from BCM.
DTC Troubleshooting
Step
1
Was "Air Conditioning System Check" performed?
2
DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check DTC in BCM.
Is DTC B1141 or B1142 detected?

DTC B1563: A/C Refrigerant Pressure Signal Failure

DTC Detecting Condition and Trouble Area
HVAC control module receives invalid data of A/C refrigerant pressure signal
from BCM.
DTC Troubleshooting
Step
1
Was "Air Conditioning System Check" performed?
2
DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check DTC in ECM.
Is DTC P0532 or P0533 detected?
DTC detecting condition
Action
DTC detecting condition
Action
Air Conditioning System: Automatic Type 7B-71
• Outside air temperature sensor
circuit
• Outside air temperature sensor
• HVAC control module
Yes
Go to Step 2.
Go to applicable DTC
diag. flow.
• A/C refrigerant pressure sensor
circuit
• A/C refrigerant pressure sensor
• HVAC control module
Yes
Go to Step 2.
Go to applicable DTC
diag. flow.
S7RW0A7224025
Trouble area
No
Go to "Air Conditioning
System Check:
Automatic Type".
Substitute a known-
good HVAC control
module and recheck.
S7RW0A7224026
Trouble area
No
Go to "Air Conditioning
System Check:
Automatic Type".
Substitute a known-
good HVAC control
module and recheck.

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