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CONTROL SYSTEM [FS] 01–40B–41 01–40B 5. Apply pressure then vacuum to the fuel tank pressure sensor according to the following Note • The output voltage varies with the 6. Decrease the applied pressure from +6.66 kPa {+50 mmHg, +1.97 inHg} to –6.66 kPa {–50 • If not as specified, replace the fuel tank • If fuel tank pressure sensor is okay, but PCM terminal 62 voltage is out of specification, carry out the Specification * : Measuring condition is as follows Input voltage: 5.0 V °°°° C {0—182 °°°° F} Circuit Open/Short Inspection 1. Remove the PCM. (See 01–40B–7 PCM REMOVAL/INSTALLATION [FS].) PCM as shown. 3. Tighten the connector attaching screw. Tightening torque 7.9—10.7 N·m {80—110 kgf·cm, 69.5—95.4 in·lbf} 4. Inspect for an open or short circuit in the following wiring harnesses by probing the applicable • If there is an open or short circuit, repair or • If there is no open or short circuit, replace the fuel tank pressure sensor. Open circuit • Fuel tank pressure signal circuit (Fuel tank pressure sensor connector terminal B and PCM connector • Constant voltage circuit (Fuel tank pressure sensor connector terminal C and PCM connector terminal 90) • GND circuit (Fuel tank pressure sensor connector terminal A and PCM connector terminal 91) Applied pressure Output voltage (V)* –6.66 kPa {–50 mmHg, –1.97 inHg} 0.45—0.55 0 kPa {0 mmHg, 0 inHg} 2.25—2.75 +6.66 kPa {+50 mmHg, +1.97 inHg} 4.05—4.95 X3U140WB4 X3U140WB3 1712-1U-01G(01-40B).fm 41 ページ 2001年6月29日 金曜日 午前9時51分 |