A2 LED 2, Idle Switch

1. MEASURE SIGNAL VOLTAGE INPUT OF TCU.
a. Turn ignition switch ON (with engine OFF).
b. Measure difference in signal voltage inputs of TCU when throttle valve is opened and closed.

Connector & Terminal/Specified value
(B46) No. 16 - No. 1/
0.5 V, max. (Fully closed)
3 - 6V (Open)

2. CHECK HARNESS/CONNECTOR BETWEEN TCU AND IDLE SWITCH.
a. Disconnect connector from TCU.
b. Disconnect connector from ECU (MPFl).
c. Disconnect connector from throttl sensor.
d. Measure resistance between TCU connector and throttle sensor connector, and between TCU connector and body.

Connector & Terminal/Specified value
(B46) No. 16 - E8 No. 1/0 ohm
(B46) No. 16 - Body /1 Mohm, min.

3. CHECK IDLE SWITCH.
a. Disconnect connector from throttl sensor.
b. Measure resistance between throttle sensor terminals when throttle sensor is opened or closed.

Connector & Terminal/Specified value
No. 1 - No. 3/
0 ohms (Fully closed)
1 Mohm, min. (Fully open)