TT Terminal Circuit
INSPECTION OF T(T) TERMINAL VOLTAGE1. INSPECT THROTTLE POSITION SENSOR SIGNAL
a. Turn the ignition switch to ON. Do not start the engine.
b. Connect a voltmeter to terminals T(1) and E(1).
c. While slowly depressing the accelerator pedal, check that T(1) 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 T(1) terminal indicates 6V.
b. Depress the brake pedal and check the voltage reading from the T(1) terminal.
Brake pedal depressed...........0V
Brake pedal released..............6V
If not as indicated, there Is a malfunction in either the stop light switch or circuit.
3. INSPECT EACH UP-SHIFT POSITION
a. Warm up the engine.
Coolant temperature: 176 °F (80 °C)
b. Turn the O/D switch to "ON".
c. Place the pattern select switch in "Normal" and the shift lever into the D range.
d. During a road test (above 10 km/h or 6 mph) check that voltage at the T(T) terminal is as indicated below for each up-shift position.
If the voltage rises from 0V to 7V in the sequence shown, the control system is okay.
The chart shows the voltmeter reading and corresponding gears.
HINT: Determine the gear position by a light shock or chan9e in engine rpm when shifting.