Inspection of Electronic Control Components

When a voltmeter is connected to the DLC1, the following items can be checked.
1. Throttle position sensor signal
2. Brake signal
3. Shift position signal


1. VOLTMETER CONNECTION



- Connect the positive (+) probe of the voltmeter to terminal TT and the negative (-) probe to terminal E1 of the DLC1.

HINT: If a voltmeter with small internal resistance is used, the correct voltage will not be indicated, so use a voltmeter with an internal resistance of at least 10 kQ/V.

2. TURN IGNITION SWITCH TO ON (DO NOT START ENGINE)
3. CHECK THROTTLE POSITION SENSOR SIGNAL
- Check if the voltage changes from approx. 0 Volts to approx. 8 Volts when the accelerator pedal is gradually depressed from the fully closed position.
4. CHECK BRAKE SIGNAL (LOCK-UP CUT SIGNAL)
- Open the throttle valve fully to apply approx. 8 Volts to terminal TT.
- In this condition, check terminal TT voltage when the brake pedal is depressed and released.

TT terminal voltage:
0 Volts (When brake pedal is depressed)
8 Volts (When brake pedal is released)

5. START ENGINE
6. CHECK SHIFT POSITION SIGNAL
(VEHICLE SPEED ABOVE 60 km/h (37 mph))
- Check up-shifting together with terminal TT voltage.
HINT: Check for light shocks from up-shifting and for changes in the tachometer.





- If terminal TT output voltage check cannot be done, check TT terminal circuit.
Refer to the Non-Trouble Code Charts.
Testing and Inspection