DTC P0070:14 [INSTRUMENT CLUSTER]

id0902e8999300

DTC P0070:14

Ambient temperature sensor circuit malfunction
Detection Condition
•  Open or short circuit in wiring harness between ambient temperature sensor and instrument cluster.
Possible Causes
•  Ambient temperature sensor connector or terminals malfunction
•  Ambient temperature sensor malfunction
•  Instrument cluster connector or terminals malfunction
•  Short to ground in wiring harness between the following terminals:
―  Ambient temperature sensor terminal A―Instrument cluster terminal 2H
―  Ambient temperature sensor terminal B―Instrument cluster terminal 2F
•  Open circuit in wiring harness between the following terminals:
―  Ambient temperature sensor terminal A―Instrument cluster terminal 2H
―  Ambient temperature sensor terminal B―Instrument cluster terminal 2F
•  Instrument cluster malfunction


System Wiring Diagram

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Diagnostic Procedure

Step

Inspection

Action
1
INSPECT AMBIENT TEMPERATURE SENSOR CONNECTOR AND TERMINALS
•  Turn the ignition switch to the LOCK position.
•  Disconnect the negative battery cable.
•  Disconnect the ambient temperature sensor connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 6.
No
Go to the next step.
2
INSPECT AMBIENT TEMPERATURE SENSOR
•  Inspect the ambient temperature sensor.
•  Is there any malfunction?
Yes
Replace the ambient temperature sensor, then go to Step 6.
(See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
No
Go to the next step.
3
INSPECT INSTRUMENT CLUSTER CONNECTOR AND TERMINALS
•  Disconnect the instrument cluster connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 6.
No
Go to the next step.
4
INSPECT AMBIENT TEMPERATURE SENSOR CIRCUIT FOR SHORT TO GROUND
•  Verify that the ambient temperature sensor and instrument cluster connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  Ambient temperature sensor terminal A
―  Ambient temperature sensor terminal B
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 6.
No
Go to the next step.
5
INSPECT AMBIENT TEMPERATURE SENSOR CIRCUIT FOR OPEN CIRCUIT
•  Verify that the ambient temperature sensor and instrument cluster connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
―  Ambient temperature sensor terminal A―Instrument cluster terminal 2H
―  Ambient temperature sensor terminal B―Instrument cluster terminal 2F
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to the next step.
6
VERIFY TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Reconnect the negative battery cable.
•  Clear the DTC using the M-MDS.
•  Turn the ignition switch to the LOCK position and wait for 10 s or more.
•  Perform the instrument cluster DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the instrument cluster.
Go to the next step.
No
Go to the next step.
7
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [INSTRUMENT CLUSTER].)
No
DTC troubleshooting completed.