Electrical Components Inspection (Cont'd)

EF & EC-632prose procedure

Throttle sensor connector illustration differs between SR20DE (SEF307L, SEF308L) and SR20DET (sub-harness connector, SEF289L).

TROUBLE DIAGNOSES

Refer to "Diagnostic Procedure 31". (See page EF & EC-494, 590.)

1
Disconnect throttle sensor harness connector.
2
Make sure that resistance between terminals ⓐ and ⓑ changes when opening throttle valve manually.
SEF307L

Accelerator pedal conditions	Resistance kΩ
Completely released	Approximately 2
Partially released	2 - 11
Completely depressed	Approximately 11

Completely released

Resistance kΩApproximately 2

Partially released

Resistance kΩ2 - 11

Completely depressed

Resistance kΩApproximately 11

If N.G., replace throttle sensor.

If throttle sensor is replaced or removed, it is necessary to install in proper position, by following the procedure as shown below:

1
Install throttle sensor body in throttle chamber. Do not tighten bolts. Leave bolts loose.
2
Connect throttle sensor harness connector.
3
Start engine and warm it up sufficiently.
4
Perform "THROTTLE SEN ADJ" in "WORK SUPPORT" mode. Measure output voltage of throttle sensor using voltmeter.
SEF275L
5
Adjust by rotating throttle sensor body so that output voltage is 0.45 to 0.55V.
SEF308L
6
Tighten mounting bolts.
7
Disconnect throttle sensor harness connector for a few seconds and then reconnect it.