Circuit Opening Relay To Ignition Switch (ST1) ECU (STA) ECU +B (UB1) EFI Main Relay FP B STA +B Check Connector FP FC E1 Fuel Pump Switch (Air Flow Meter) (7M-GTE) Fuel Pump Control Relay ECU (7M-GTE) F11305 INSPECTION OF CIRCUIT OPENING RELAY 1. INSPECT RELAY CONTINUITY (a) Using an ohmmeter, check that there is continuity between terminals STA and E1. (b) Check that there is continuity between terminals B and FC. (c) Check that there is no continuity between terminals B and FP. If continuity is not as specified, replace the relay. Continuity STA B No continuity Continuity FC E1 FP F11308 2. INSPECT RELAY OPERATION (a) Apply battery voltage across terminals STA and E1. (b) Using an ohmmeter, check that there is continuity between terminals B and FP. Continuity Battery F11309 (c) Apply battery voltage across terminals B and FC. (d) Check that there is continuity between terminals B and FP. If operation is not as specified, replace the relay. Continuity Battery F11310