EFI SYSTEM — Troubleshooting for EFI Electronic Circuit with Volt/Ohmmeter FI-35 No. | Terminals | Trouble | Condition | STD voltage 2 | IDL - E₂ | No voltage | Ignition switch ON | Throttle valve open | 4 - 6 | VTA - E₂ | | | Throttle valve fully closed | 0.1 - 1.0 | Vc - E₂ | | | Throttle valve fully open | 4 - 5 | | | | | 4 - 6 ECU Throttle Position Sensor [Diagram showing throttle position sensor connections to ECU with terminals E₁, IDL, VTA, Vc, E₂] F-0485 Voltmeter ECU [Diagram 1 showing voltmeter connection to IDL terminal] F-0527 Voltmeter ECU +B [Diagram 2 showing voltmeter connection to +B terminal] F-0528 Ohmmeter [Diagram 3 showing ohmmeter connection to throttle position sensor at IDL and E₂ terminals] F-0484 ① There is no voltage between ECU terminals IDL and E₂. (IG S/W ON) (Throttle valve open) ↓ ② Check that there is voltage between ECU terminal +B body and body ground. (IG S/W ON) NO | OK ↓ | Check wiring between ECU terminal E₁ and body ground. | BAD → Repair or replace ↓ Refer to No. 1. → BAD → Repair or replace ↓ OK ↓ ③ Check throttle position sensor. → BAD | BAD | OK ↓ ↓ Repair or replace | Check wiring between ECU and throttle position sensor. ↓ OK ↓ Try another ECU.