6 - 21 FUEL INJECTION SYSTEM FI FI Fault code No. 39 Symptom Open circuit detected in a injector. Diagnostic code No. D36 Injector Order Item/components and probable cause Check or maintenance job Reinstatement method 1 Connections • Injector coupler • Main wire harness-ECU coupler • Main wire harness fuel pump coupler • Check the couplers for any pins that may be pulled out. • Check the locking condition of the couplers. • If there is a malfunction, repair it and connect the coupler securely. Cranking the engine. (Con- nect the fuel injector cou- pler.) 2 Open or short circuit in wire har- ness and/or sub-wire harness 2. • Repair or replace if there is an open or short circuit.
• Between injector coupler and ECU coupler. (red/blue–red/blue) (red/black–red/black) 3 Defective injector. • Execute the diagnostic mode. (Code No.D36) • Replace if defective. Refer to “CHECKING THE FUEL INJECTOR”.