7-14Intake air pressure sensor outputvoltage3.75 4.25 VTester positive probe pink / whiteTester negative probe black / blue1212When installing or removing the con-nector, main switch turn to “OFF”.NOTE:FUEL INJECTION SYSTEM FIFault code No. 13 Symptom Intake air pressure sensor - open or short circuit detected.Used diagnostic code No. 03 (intake air pressure sensor)Order Inspection operation item and probablecauseOperation item and countermeasure Reinstatementmethod1 Connected condition of connectorInspect the coupler for any pins thatmay have pulled out.Check the locking condition of thecoupler.If there is a malfunction, repair it and connect itsecurely.Intake air pressure sensor couplerMain wiring harness ECU couplerSub-wire harness couplerReinstated byturning themain switchON.2 Open or short circuit in wiring harnessand / or sub lead.Repair or replace if there is an open or shortcircuit.Between sensor coupler and ECU couplerBlack / Blue - Black / BluePink / White - Pink / WhiteBlue - Blue3 Defective intake air pressure sensor Execute the diagnostic mode (code No. 03)Replace if defective.1. Connect the pocket tester (DC 20 V) to theintake air pressure sensor coupler terminal asshown.2. Set the main switch to “ON”.3. Measure the intake air pressure sensor outputvoltage.4. Is the intake air pressure sensor OK?