general information - Martin Nez

FI SYSTEM DIAGNOSIS 4-69Step 1 (When indicating P1654-L:)1) Turn the ignition switch to OFF.2) Lift and support the fuel tank. (5-3)3) Remove the air cleaner box and lift up the throttle body.(5-13)4) Check the STP sensor coupler for loose or poor contacts.If OK, then check the STP sensor lead wire continuity.15) Disconnect the STP sensor coupler.6) Check the continuity between Y/W wire B and ground.7) Also, check the continuity between Y/W wire B and B/Br wireC. If the sound is not heard from the tester, the circuit conditionis OK.1]8) Disconnect the ECM coupler.9) Check the continuity between Y/W wire B and terminal J.10) Also, check the continuity between R wire A and terminalA. STPS lead wire continuity: Continuity () 09900-25008: Multi-circuit tester set09900-25009: Needle pointed probe set Tester knob indication: Continuity test ()1ECM couplers (Harness side)]Is the continuity OK?YES Go to Step 1 (4-67) and go to Step 2.NORed or Y/W wire open, or Y/W wire shorted toground11) After repairing the trouble, clear the DTC using SDS tool.(4-26)