FI SYSTEM DIAGNOSIS 4-85 Step 1 (When indicating P1658:) 1 1) Turn the ignition switch OFF. 2) Lift and support the fuel tank. (5-3) 3) Check the EXCVA motor coupler for loose or poor contacts. Is the contacting OK? YES Go to Step 6. NO Loose or poor contacts on the EXCV motor cou- pler 4) After repairing the trouble, clear the DTC using SDS tool. (4-27) Step 2 2 1) Turn the ignition switch OFF. 2) Check the installation of EXCV cables. (6-16) If it is necessary, adjust the EXCV cables. (6-8 to -9) E L 3) Disconnect the EXCVA position sensor lead wire coupler. 2 4) Turn the ignition switch ON. P 5) Measure the voltage between the Red wire terminal 1 and ground. M 6) If OK, then measure the voltage between the Red wire A terminal 1 and B/Br wire terminal 2. S Position sensor input voltage: 4.5 – 5.5 V (+ Red – - Ground) (+ Red – - B/Br) 09900-25008: Multi circuit tester set 2 Tester knob indication: Voltage () V Is the voltage OK? YES Go to Step 3. • Loose or poor contacts on the ECM coupler NO (terminal A or S) • Open or short circuit in the Red wire or B/Br wire 7) After repairing the trouble, clear the DTC using SDS tool. (4-27)