Ignition "OFF"
Disconnect evaporator sensor.
Measure resistance between terminal "1" and "2" of evaporator sensor.
Specification : Refer the specifications in fig3)
Is the measured resistance within specifications in fig3)? (tolerance limits ±3%)
YES
Go to "Check A/C Control Unit" procedure.
NO
Substitute with a known-good evaporator sensor and check for proper operation.
If the problem is corrected, replace evaporator sensor and then go to "Verification of Vehicle Repair" procedure.