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Check Outside Temperature Indicator

CHECKING OUTSIDE TEMPERATURE INDICATOR

Step Check Yes No
1 CHECK POWER SUPPLY FOR AMBIENT SENSOR. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the connector from outside temperature sensor.
  3. Turn the ignition switch to ON.
  4. Measure the voltage between outside temperature sensor harness connector terminal and chassis ground.

Connector & terminal 
(F78) No. 2 (+) - Chassis ground (-): 		 Is the voltage more than 4 V? Go to step 3  . Go to step 2  .
2 CHECK HARNESS BETWEEN AMBIENT SENSOR AND COMBINATION METER. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the connector from combination meter.
  3. Measure the resistance between ambient sensor harness connector terminal and combination meter harness connector terminal.

Connector & terminal 
(F78) No. 1 - (i10) No. 25: 
(F78) No. 2 - (i10) No. 24: 		 Is the resistance less than 10 ohm? Replace the combination meter printed circuit. Repair the wiring harness.
3 CHECK AMBIENT SENSOR. 
  1. Remove the ambient sensor.
  2. Check the ambient sensor. < Ref. to INSPECTION , Ambient Sensor. >
 Is the ambient sensor OK? Go to step 4  . Replace the ambient sensor.
4 CHECK OUTSIDE TEMPERATURE INDICATOR. 
  1. Connect the combination meter harness connector.
  2. Connect a resistor (3 kohm) between terminals of ambient sensor harness connector.
  3. Turn the ignition switch to ON and check the outside temperature indicator display.
 Does the outside temperature indicator indicate 25°C (77°F)? Repair the poor contact of ambient sensor harness connector. Replace the combination meter printed circuit.
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