4-30 FI SYSTEM DIAGNOSIS DTC No. DETECTED DETECTED FAILURE CONDITION CHECK FOR ITEM IAT sensor The sensor voltage should be the fol- IAT sensor, lead wire/coupler lowing. connection C21 0.15 V sensor voltage < 4.85 V In other than the above range, C21 (P0110) is indicated. H Sensor voltage is higher than specified IAT sensor circuit open or P0110 value. ground circuit open L Sensor voltage is lower than specified IAT sensor circuit shorted to value. ground AP sensor The sensor voltage should be the fol- AP sensor, wiring/coupler con- lowing. nection C22 0.5 V sensor voltage < 4.85 V In other than the above range, C22 (P1450) is indicated. H Sensor voltage is higher than specified AP sensor circuit shorted to value. VCC or ground circuit open P1450 Sensor voltage is lower than specified AP sensor circuit open or L value. shorted to ground or VCC circuit E open TO sensor The sensor voltage should be the fol- TO sensor, lead wire/coupler L lowing for 2 sec. and more, after igni- connection C23 tion switch is turned ON. P 0.2 V sensor voltage < 4.8 V M In other than the above value, C23 (P1651) is indicated. A H Sensor voltage is higher than specified TO sensor circuit shorted to value. VCC or ground circuit open S P1651 Sensor voltage is lower than specified TO sensor circuit open or L value. shorted to ground or VCC circuit open Ignition sig- CKP sensor (pick-up coil) signal is pro- Ignition coil, wiring/coupler con- C24/C25 nal duced, but signal from ignition coil is nection, power supply from the C26/C27 interrupted 8 times or more continu- battery ously. In this case, the code C24 P0351/P0352 (P0351), C25 (P0352), C26 (P0353) or P0353/P0354 C27 (P0354) is indicated. Secondary When no actuator control signal is STVA motor, STVA lead C28 throttle valve supplied from the ECM, communica- wire/coupler actuator tion signal does not reach ECM or operation voltage does not reach P1655 STVA motor, C28 (P1655) is indicated. STVA can not operate.