DTC 11 [FULL-AUTO AIR CONDITIONER]


id0702c1802600


ZJ, ZY

DTC 11

Evaporator temperature sensor (past malfunction)

DETECTION CONDITION
•  Once or more in the past, the evaporator temperature signal input from the evaporator temperature sensor is -50 °C {58 °F} or less, or 100 °C {212 °F} or more.
POSSIBLE CAUSE
•  Evaporator temperature sensor malfunction
•  Open or short circuit in wiring harness between evaporator temperature sensor and climate control unit
•  Climate control unit malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
INSPECT EVAPORATOR TEMPERATURE SENSOR CONNECTOR CONDITION
•  Turn the ignition switch to the LOCK position.
•  Disconnect the evaporator temperature sensor connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Are the connector and terminals normal?
Yes
Go to the next step.
No
Repair/replace the connector or terminal.
After repair procedure, go to Step 9.
2
INSPECT EVAPORATOR TEMPERATURE SENSOR
•  Inspect the evaporator temperature sensor.
•  Is the evaporator temperature sensor normal?
Yes
Go to the next step.
No
Replace the evaporator temperature sensor.
After replacement, go to Step 9.
3
INSPECT EVAPORATOR TEMPERATURE SENSOR FOR SHORT CIRCUIT TO GROUND
•  Inspect the wiring harness for continuity between evaporator temperature sensor connector terminal B and body ground.
Note
•  Inspect for continuity while shaking the wiring harness between the evaporator temperature sensor and climate control unit.
•  Is there continuity?
Yes
Repair/replace the malfunctioning vehicle wiring harness.
After repair procedure, go to Step 9.
No
Go to the next step.
4
INSPECT EVAPORATOR TEMPERATURE SENSOR FOR OPEN CIRCUIT
•  Turn the ignition switch to the ON position.
•  Measure the voltage at evaporator temperature sensor connector terminal B.
Note
•  Inspect for continuity while shaking the wiring harness between the evaporator temperature sensor and climate control unit.
•  Is the voltage 5 V?
Yes
Go to Step 6.
No
Go to the next step.
5
INSPECT EVAPORATOR TEMPERATURE SENSOR CIRCUIT FOR OPEN CIRCUIT
•  Measure the voltage at climate control unit connector terminal O.
Note
•  Inspect for continuity while shaking the wiring harness between the evaporator temperature sensor and climate control unit.
•  Is the voltage 5 V?
Yes
Repair/replace the malfunctioning vehicle wiring harness.
After repair procedure, go to Step 9.
No
Go to Step 8.
6
INSPECT EVAPORATOR TEMPERATURE SENSOR FOR OPEN CIRCUIT
•  Turn the ignition switch to the LOCK position.
•  Inspect the wiring harness for continuity between evaporator temperature sensor connector terminal A and body ground.
Note
•  Inspect for continuity while shaking the wiring harness between the evaporator temperature sensor and climate control unit.
•  Is there continuity?
Yes
Go to Step 9.
No
Go to the next step.
7
INSPECT EVAPORATOR TEMPERATURE SENSOR CIRCUIT FOR OPEN CIRCUIT
•  Inspect the wiring harness for continuity between climate control unit connector terminal S and body ground.
Note
•  Inspect for continuity while shaking the wiring harness between the evaporator temperature sensor and climate control unit.
•  Is there continuity?
Yes
Repair/replace the malfunctioning vehicle wiring harness.
After repair procedure, go to Step 9.
No
Go to the next step.
8
INSPECT CLIMATE CONTROL UNIT CONNECTOR CONDITION
•  Disconnect the climate control unit connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Are the connector and terminals normal?
Yes
Go to the next step.
No
Repair/replace the connector or terminal.
After repair procedure, go to the next step.
9
VERIFY THAT SAME DTC IS NOT OUTPUT AGAIN
•  Reconnect the disconnected connectors.
•  Verify DTCs.
•  Is DTC 11 output?
Yes
Repeat the inspection from Step 1.
•  If the malfunction does not recur, go to the next step.
•  If the malfunction recurs, replace the climate control unit.
No
Go to the next step.
10
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Verify other DTC displayed.
•  Are any other DTCs output?
Yes
Perform the corresponding DTC inspection.
No
DTC troubleshooting completed.


MZ-CD 1.4 DI Turbo, MZ-CD 1.6 (Y6)

DTC 11

Evaporator temperature sensor (past malfunction)

DETECTION CONDITION
•  Once or more in the past, the evaporator temperature signal input from the evaporator temperature sensor is -50 °C {58 °F} or less, or 100 °C {212 °F} or more.
POSSIBLE CAUSE
•  Evaporator temperature sensor malfunction
•  Instrument cluster malfunction
•  Open or short circuit in wiring harness between evaporator temperature sensor and instrument cluster
•  Open or short circuit in wiring harness between instrument cluster and climate control unit
•  Climate control unit malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
INSPECT FOR INSTRUMENT CLUSTER DTCs
•  Connect the M-MDS to the DLC-2.
•  Inspect for instrument cluster DTCs
•  Is DTC B1B71:14 output?
Yes
Perform the corresponding DTC inspection.
No
Go to the next step.
2
VERIFY INSTRUMENT CLUSTER CONNECTOR CONDITION
•  Turn the ignition switch to the LOCK position.
•  Disconnect the instrument cluster connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Are the connector and terminals normal?
Yes
Go to the next step.
No
Repair/replace the connector or terminal.
After repair procedure, go to Step 6.
3
VERIFY CLIMATE CONTROL UNIT CONNECTOR CONDITION
•  Disconnect the climate control unit connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Are the connector and terminals normal?
Yes
Go to the next step.
No
Repair/replace the connector or terminal.
After repair procedure, go to Step 6.
4
INSPECT SERIAL COMMUNICATION CIRCUIT FOR OPEN CIRCUIT
•  Inspect the wiring harness between instrument cluster connector terminal 2I and climate control unit connector terminal T.
Note
•  Inspect for continuity while shaking the wiring harness between the instrument cluster and climate control unit.
•  Is there continuity?
Yes
Go to the next step.
No
Repair/replace the malfunctioning vehicle wiring harness.
After repair procedure, go to Step 6.
5
INSPECT SERIAL COMMUNICATION CIRCUIT FOR SHORT CIRCUIT
•  Inspect the wiring harness for continuity between climate control unit connector terminal T and body ground.
Note
•  Inspect for continuity while shaking the wiring harness between the instrument cluster and climate control unit.
•  Is there continuity?
Yes
Repair/replace the malfunctioning vehicle wiring harness.
After repair procedure, Go to the next step.
No
Go to the next step.
6
VERIFY THAT SAME DTC IS NOT OUTPUT
•  Reconnect the disconnected connectors.
•  Verify DTCs.
•  Is DTC 11 output?
Yes
Repeat the inspection from Step 1.
•  If the malfunction does not recur, go to the next step.
•  If the malfunction recurs, replace the climate control unit.
No
Go to the next step.
7
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Verify other DTCs displayed.
•  Are any other DTCs output?
Yes
Perform the corresponding DTC inspection.
No
DTC troubleshooting completed.