Starter Interrupt System Circuit

Turn ignition off and disconnect ATS ECU connector. Unlock either driver's or passenger's door using key. Put shift lever into Neutral or Park position (A/T) or depress clutch pedal (M/T). Turn ignition to START position. Ensure battery voltage exists between ground and ECU terminal A1 (with power door locks, Black/White wire) or No. 18 (without power door locks, Black/White wire). If battery voltage is not present, repair short or open in starter relay circuit. If battery voltage is present, replace ATS ECU and retest.