FI SYSTEM DIAGNOSIS 4-71 Step 2 2 1) Turn the ignition switch OFF. 2) Lift and support the fuel tank. (5-3) 3) Disconnect the STP sensor coupler. 4) Check the continuity between each terminal and ground. STP sensor continuity: ∞ Ω (Infinity) (Terminal – Ground) 5) If OK, then measure the STP sensor resistance at the wire 2 terminals (between Yellow wire A and Black wire B). 6) Close and open the secondary throttle valve by finger, and measure the valve closing and opening resistance. STP sensor resistance 2 E 2 Secondary throttle valve is closed: Approx. 0.5 kΩ Secondary throttle valve is opened: Approx. 3.9 kΩ L (Yellow A – Black B) P SAM 7) If OK, then measure the STP sensor resistance at the wire 2 terminals (between Blue wire c and Black wire B). STP sensor resistance: Approx. 4.69 kΩ (Blue c – Black B) 09900-25008: Multi-circuit tester set Tester knob indication: Resistance (Ω) Are the continuity and resistance OK? YES Go to Step 3. NO • Reset the STP sensor position correctly. • Replace the STP sensor with a new one. 8) After repairing the trouble, clear the DTC using SDS tool. (4-27)