Circuit Opening Relay ECU +B No. 1 Main Relay B ECU IG IG ECU STA STA Circuit Opening Relay Fp Fc E₁ Fuel Pump Combination Meter Fuel Pump Switch Air Flow Meter INSPECTION OF CIRCUIT OPENING RELAY 1. CHECK CIRCUIT OPENING RELAY OPERATION (a) Remove the left kick panel. (b) Using a voltmeter, check that the meter indicates voltage at Fp terminal during engine cranking and running. (c) Stop the engine. Voltmeter Fp FI101E 2. MEASURE RESISTANCE OF CIRCUIT OPENING RELAY (a) Disconnect the connector. (b) Measure the resistance between each terminal. STA B Fp E₁ Fc BE0002 Between terminals | Resistance (Ω) STA — E₁ | 17 — 25 IG — Fc | 88 — 132 +B — Fp | Infinity