4-50 FI SYSTEM DIAGNOSIS Step 1 (When indicating P0115-L:) 1 1) Turn the ignition switch OFF. 2) Lift and support the fuel tank. (5-3) 3) Check the ECT sensor coupler for loose or poor contacts. If OK, then measure the output voltage. 4) Disconnect the ECT sensor coupler. 1 5) Check the continuity between B/Bl wire A and ground. If the sound is not heard from the tester, the circuit condition is OK. Tester knob indication: Continuity test () 6)Connect the ECT sensor coupler and turn the ignition switch 1 E ON. L V 7)Measure the voltage between B/Bl wire A and ground. ECT sensor output voltage: 0.15 – 4.85 V P (+ B/BI – - Ground) 09900-25008: Multi-circuit tester set M 09900-25009: Needle pointed probe set A Tester knob indication: Voltage () S Are the continuity and voltage OK? YES Go to Step 2. NO • B/BI wire shorted to ground • If wire is OK, go to Step 2. 8)After repairing the trouble, clear the DTC using SDS tool. (4-27)