Page text (OCR transcript)
EFI SYSTEM — Troubleshooting with Volt/Ohmmeter (7M-GTE) FI-55
No. | Terminals | Trouble | Condition | STD voltage
2 | IDL - E2 | No voltage | Ignition switch ON | Throttle valve open | 4 - 6 V
| VC - E2 | | | - | 4 - 6 V
| VTA - E2 | | | Throttle valve fully closed | 0.1 - 1.0 V
| | | | Throttle valve fully open | 3.2 - 4.2 V
ECU
Throttle Position Sensor
+B
(+B1)
E2
IDL
VTA
VC
E2
IDL
VTA
VC
E1
FI1366
IDL - E2
1. There is no voltage between ECU terminals IDL and E2.
(IG SW ON) (Throttle valve open)
2. Check that there is voltage between ECU terminal +B (+B1)
and body ground. (IG SW ON)
NO | OK
Check wiring between ECU terminal E1 and body ground.
OK | BAD
Try another ECU. | Repair or replace.
BAD
Refer to No. 1.
(See page FI-54) | Repair or replace.
OK
(See page FI-101)
3. Check throttle position sensor.
BAD | BAD | OK
Repair or replace | Check wiring between ECU and throttle position sensor.
OK
Try another ECU.
VC
VTA
IDL
E2
Ohmmeter
FI2635
