Toyota 3F-E Repair Manual Supplement page 92

EFI SYSTEM - Troubleshooting with Volt/Ohmmeter
Terminals
No.
IDL - E2
VC - E2
2
No voltage
VTA - E2
Thrc
Trouble
Ignition
switch ON
• IDL - E2
There is no voltage between ECU terminals IDL and E2.
O
Refer to No. 1.
j Check throttle position sensor.
Replace or repair throt-
tie position sensor.
Condition
Throttle valve open
—
Throttle valve fully closed
Throttle valve fully open
(IG SW ON) (Throttle valve open)
Check that there is voltage between ECU terminal + B
( + B1) and body ground. (IG SW ON)
NO OK
Check wiring between ECU terminal El and body
ground.
OK
Try another ECU.
OK
BAD
STD Voltage
4 - 6 V
4 - 6 V
0.1 - 1.0 V
4- 5 V
ECU
BAD
Replace or repair.
BAD
Replace or repair.
BAD
OK
Check wiring between ECU and
throttle position sensor.
OK
Try another ECU.
FI-33
FI1366