6 - 23 FUEL INJECTION SYSTEM FI FI Fault code No. 42 Symptom No normal signals are received from the speed sensor. Diagnostic code No. D07 Speed sensor Order Item/components and probable cause Check or maintenance job Reinstatement method 1 Connections • Speed 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. Starting the engine, and activating the vehicle speed sensor by oper- ating the vehi- cle at 20 to 30 km/h. 2 Open or short circuit in speed sen- sor lead. • Repair or replace if there is an open or short circuit.
• Between speed sensor coupler and ECU coupler. (blue–blue) (white–white) (black/blue–black/blue) 3 Gear for detecting vehicle speed has broken. • Replace if defective. Refer to “TRANSMISSION” in chapter 4. 4 Defective speed sensor. • Execute the diagnostic mode. (Code No.D07) • Replace if defective. Refer to “SIGNALING SYSTEM” in chapter 9.