6 - 18 FUEL INJECTION SYSTEM FI FI Fault code No. 22 Symptom Intake air temperature sensor: open or short circuit detected. Diagnostic code No. D05 Intake air temperature sensor Order Item/components and probable cause Check or maintenance job Reinstatement method 1 Installed condition of air tempera- ture sensor. Check for looseness or pinching. Turning the main switch to “ON”. 2 Connections • Intake air temperature sensor coupler • Main wire harness-ECU coupler • Check the coupler for any pins that may be pulled out. • Check the locking condition of the coupler. • If there is a malfunction, repair it and connect the coupler securely. 3 Open or short circuit in wire har- ness.
• Repair or replace if there is an open or short circuit. • Between intake air temperature sensor coupler and ECU coupler (brown/white–brown/white) (black/blue–black/blue) 4 Defective air temperature sensor. • Execute the diagnostic mode. (Code No.D05) • Replace if defective. Refer to “CHECKING THE INTAKE AIR TEMPERATURE SENSOR”.