22. FUEL INJECTION SYSTEM MXU 500i Apply oil onto a new O-ring. T-MAP sensor When install the T-MAP sensor onto the throttle body, being careful not to damage the O-ring. Always replace an O-ring with a new one. Install the set plate and tighten the screw securely. O-ring Apply oil onto a new O-ring. Screw T-MAP sensor When install the ISC and T-MAP sensor onto the throttle body, being careful not to damage the O-ring. DIAGNOSTIC TOOL Screws ISC CONNECTOR INSPECTION Remove front cover Make sure moving the shift lever into the N or P position . Remove diagnostic tool connector protect Front cover sheath. Turn the ignition switch to "ON" Measure the voltage between the following terminals of the diagnostic tool connector . Terminal Normal Diagnostic Connector Protect sheath. BR/L (+) G/B (-) Battery voltage Battery voltage B/L (+) W/L (-) 1 V Diagnostic Connector 22-28