Inspection Of Tt Terminal Voltage

1. INSPECT THROTTLE POSITION SENSOR SIGNAL

(a) Turn the ignition switch to ON. Do not start the engine.

(b) Connect a voltmeter to check connector terminals Tt and Ei.

(c) While slowly depressing the accelerator pedal, check that Tt terminal voltage rises in sequence.

If the voltage does not change in proportion to the throttle opening angle, there is a malfunction in the throttle position sensor or circuit.

2. INSPECT BRAKE SIGNAL

(a) Depress the accelerator pedal until the Tt terminal indicates 8V.

(b) Depress the brake pedal and check the voltage reading from the Tt terminal.

Brake pedal depressed OV

Brake pedal released 8V

If not as indicated, there is a malfunction in either the stop light switch or circuit.

TT Terminal (V)

Gear Potition

0

1st

2

2nd

3

2nd Lock-up

4

3rd

6

3rd Lock up

6

0/0

7

O/D Lock up

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