7B-66 Air Conditioning System: Automatic Type
DTC B1561: Engine Coolant Temperature Sensor Signal Malfunction
S7RS0B7224023
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
DTC B1562: Outside Air Temperature Sensor Signal Malfunction
S7RS0B7224024
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
DTC B1563: A/C Refrigerant Pressure Sensor Signal Malfunction
S7RS0B7224025
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
DTC detecting condition Trouble area
HVAC control module receives error code from BCM continuously. • ECT sensor circuit
• ECT sensor
• HVAC control module
Step Action Yes No
1 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check ECM for DTC.
Are there DTC P0116, P0117 or P0118?
Go to applicable DTC
diag. flow.
Substitute a known-
good HVAC control
module and recheck.
DTC detecting condition Trouble area
HVAC control module receives error code from BCM continuously. • Outside air temperature sensor
circuit
• Outside air temperature sensor
• HVAC control module
Step Action Yes No
1 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check BCM for DTC.
Are there DTC B1141, B1142 or B1143?
Go to applicable DTC
diag. flow.
Substitute a known-
good HVAC control
module and recheck.
DTC detecting condition Trouble area
HVAC control module receives error code from BCM continuously. • A/C refrigerant pressure sensor
circuit
• A/C refrigerant pressure sensor
• HVAC control module
Step Action Yes No
1 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check ECM for DTC.
Are there DTC P0532 or P0533?
Go to applicable DTC
diag. flow.
Substitute a known-
good HVAC control
module and recheck.
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