FULL-AUTOMATIC AIR CONDITIONER – Troubleshooting
55-35
Code No.13 Outside air temperature sensor system (open
circuit)
Probable cause
This diagnosis code is output if the power supply line or input line of the outside
air temperature sensor is open-circuited and no signal is input from the outside
air temperature sensor to A/C-ECU.
D Malfunction of the outside air temperature sensor
D Malfunction of connector, harness
D Malfunction of the A/C-ECU
Outside air temperature sensor check (Refer to P.55-62.)
NG
Replace
OK
Measure at the outside air temperature sensor connector A-35.
D Disconnect the connector, and measure at the harness
side connector.
D Voltage between terminal (2) and body earth
OK: 5 V
NG
Check the following connectors:
B-15, B-16
NG
Repair
OK
Check the trouble symptom.
NG
Check the harness between the outside air temperature sensor
and the A/C-ECU.
NG
Repair
OK
Replace the A/C-ECU.
OK
Measure at the A/C-ECU connector B-04.
D Connect the connector.
D Voltage between terminal (7) and body earth
OK: 2.3 – 2.9 V
NG
Check the following connectors:
A-15, B-04
NG
Repair
OK
Check the trouble symptom.
NG
Check the harness between the outside air temperature sensor
and the A/C-ECU, and repair if necessary.
OK
Check the following connector: B-04
NG
Repair
OK
Check the trouble symptom.
NG
Replace the A/C-ECU.
Code No.14 Outside air temperature sensor system (short
circuit)
Probable cause
This diagnosis code is output if the power supply line or input line of the outside
air temperature sensor is short-circuited and outside air temperature sensor power
supply voltage signals are input to A/C-ECU.
D Malfunction of the outside air temperature sensor
D Malfunction of connector, harness
D Malfunction of the A/C-ECU
Outside air temperature sensor check (Refer to P.55-62.)
NG
Replace
OK
Measure at the A/C-ECU connector B-04.
D Connect the connector.
D Voltage between terminal (7) and body earth
OK: 2.3 – 2.9 V
NG
Check the harness between the outside air temperature sensor
and the A/C-ECU, and repair if necessary.
OK
Replace the A/C-ECU.
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