5000CS Turbo L5-2226cc 2.22L SOHC Turbo (MC) (1987)
Intake Air Temperature Sensor: Testing and Inspection
Intake air temperature sensor, checking
Work sequence
Note: The intake air temperature sensor is located in the inter cooler outlet.
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Without unplugging connector, slide back protective boot (arrow) and connect ohmmeter between terminals of intake air temperature sensor
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Specification: 400-700 ohm
If specification OK
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Check wiring between sensor and control unit as follows
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Remove control unit cover panel located on passenger side footwell
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Unplug control unit connector
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Connect ohmmeter between terminal 23 of control unit connector and terminal 1 of air temperature sensor
^
Specification: 0.0 ohms
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Connect ohmmeter between terminal 23 of control unit connector and terminal 2 of air temperature sensor
^
Specifications: from 400-700 ohms
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Connect ohmmeter between terminal 24 of control unit connector and terminal 1 of air temperature sensor
^
Specification: from 400-700 ohms
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Connect ohmmeter between terminal 24 of control unit connector and terminal 2 of air temperature sensor
^
Specification: approx. 0.0 ohms
If specifications NOT OK
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Cut wires at intake air temperature sensor terminals and check as follows
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Connect ohmmeter between open terminals 1 and 2 of intake air temperature sensor
^
Specification: from 400-700 ohms
If NO
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Replace sensor
Note: Intake air temperature sensor must always be soldered when wires have been cut to insure proper electrical characteristics are maintained.
If sensor OK