Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
YES
Repair as necessary and go to "Verification Vehicle Repair" procedure
NO
Go to "Signal Circuit Inspection" procedure
Ignition "OFF".
Disconnect the "ATF TEMPERATURE SENSOR" connector
Measure the voltage between terminal "1" of the "ATF TEMPERATURE SENSOR" harness connector and chassis ground.
Specification : Approx. 5 V
Is voltage within specifications ?
YES
Go to "Ground circuit inspection" procedure
NO
Check for short to ground in harness. Repair as necessary and Go to "Verification Vehicle Repair" procedure
Ignition "OFF"
Disconnect the "ATF TEMPERATURE SENSOR" connector
Measure the resistance between terminal "2" of the "ATF TEMPERATURE SENSOR" harness connector and chassis ground.
Specification : Approx. 0 Ω
Is resistance within specifications ?
YES
Go to "Component Inspection" procedure
NO
Check for open in harness. Repair as necessary and Go to "Verification Vehicle Repair" procedure